Krill may be small, but their role in carbon storage is monumental. Beneath Antarctica's icy waters, these tiny crustaceans are emerging as unexpected heroes in the fight against atmospheric carbon.



While the significance of blue carbon habitats like mangroves, seagrasses, and saltmarshes is well-known, recent research highlights the vital contribution of Antarctic krill and their impressive carbon storage capacity.



<h2 class="wp-block-heading" id="h-the-unsung-heroes-of-carbon-capture">The unsung heroes of carbon capture</h2>



When we think of <a href="https://www.earth.com/news/mountains-both-carbon-sinks-and-carbon-sources/" target="_blank" rel="noreferrer noopener">carbon sinks</a> - the vital natural systems that absorb and store carbon from the atmosphere - we might not consider the role of small crustaceans.



The new findings reveal that Antarctic krill store amounts of carbon that are comparable to critical blue carbon habitats like mangroves, seagrasses, and saltmarshes.



Despite their minute size, these krill contribute significantly to carbon cycling, thanks to their enormous combined populations.



"A key player in the biological carbon pump is the Antarctic krill,&nbsp;Euphausia superba, whose faecal pellets, moults and carcasses can completely dominate Southern Ocean carbon fluxes to the ocean’s interior in the Austral growth season," wrote the researchers.



<h2 class="wp-block-heading" id="h-the-role-of-krill-in-carbon-cycling">The role of krill in carbon cycling</h2>



Krill are often viewed as merely being food for larger animals. Whales, seals, and penguins relish these <a href="https://www.earth.com/news/new-deep-sea-crustacean-species-discovered-in-the-bahamas/" target="_blank" rel="noreferrer noopener">crustaceans</a>, and humans also fish them for bait, aquaculture, and dietary supplements. However, the value of krill extends far beyond the food chain.



“For the past decade we have been piecing together the role krill have in carbon cycling, finally resulting in this amazing finding that krill, and their poo, store similar amounts of carbon as some coastal marine plants," explained Dr. Emma Cavan, one of the lead authors from <a href="https://www.imperial.ac.uk/" target="_blank" rel="noreferrer noopener">Imperial College London</a>.



Protection for these vital creatures is an urgent matter. "I hope this means we can now work towards conserving krill and their valuable Southern Ocean ecosystem with the same gumption as we are seagrasses and mangroves.”



<h2 class="wp-block-heading" id="h-carbon-storage-in-ocean-systems">Carbon storage in ocean systems</h2>



<a href="https://www.earth.com/news/climate-change-is-impacting-marine-life-more-than-we-realized/" target="_blank" rel="noreferrer noopener">Marine life</a> plays a pivotal role in locking carbon away from the atmosphere in ocean systems. The term "blue carbon" was coined over a decade ago to describe the crucial role <a href="https://www.earth.com/news/native-aquatic-plants-could-help-clean-coastal-waters/" target="_blank" rel="noreferrer noopener">coastal marine plants</a> play in this process. 



Yet, the ocean has other storage methods far from the coast through animals like krill. These creatures feed on phytoplankton - microscopic <a href="https://www.earth.com/news/good-news-plants-are-absorbing-more-human-produced-co2-than-expected/" target="_blank" rel="noreferrer noopener">plants that absorb carbon</a> during photosynthesis.



When krill excrete or shed their exoskeletons, the carbon they've consumed sinks to the ocean depths, where it remains for a long time. This process could lock away at least 20 million tons of carbon annually, which is the equivalent of up to $46 billion worth of carbon storage.



“Antarctic krill are well known for being at the center of the unique Southern Ocean ecosystem and supporting an important fishery. But this study paints another picture of krill - on their key role in storing carbon," noted study co-author Professor Angus Atkinson from Plymouth Marine Laboratory.



<h2 class="wp-block-heading" id="h-the-power-of-krill-swarms">The power of krill swarms</h2>



The massive populations of krill make them effective carbon storers. Swarms can contain up to 30 trillion individuals, producing a deluge of carbon-rich waste products.



“One of the amazing things about krill is that they form massive swarms, which can be over a kilometer in length," said Dr. Anna Belcher, a co-author from the UK Centre for Ecology &amp; Hydrology. "This drives a huge 'rain' of krill poo after feeding, making krill globally important for locking carbon away from the atmosphere."



The study also reveals that the depth needed to secure carbon storage effectively is surprisingly shallow, with an average of 381 meters.



<h2 class="wp-block-heading" id="h-protecting-krill-for-carbon-storage">Protecting krill for carbon storage </h2>



Antarctic krill are under increasing threat from rapid polar climate change, which is drastically altering their habitat. These krill are also targeted by an expanding fishery that further depletes their populations.



The combined pressures make the carbon storage capacity of krill an urgent and vital area for protection. Preserving this crucial carbon sink is essential for maintaining the delicate balance of the Southern Ocean ecosystem, and for meeting global climate goals.



The research highlights the need to integrate carbon considerations into broader conservation policies.



The study is published in the journal <a href="https://www.nature.com/articles/s41467-024-52135-6" target="_blank" rel="noreferrer noopener">Nature Communications</a>.



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Antarctic krill are nature’s unexpected carbon warriors

Krill may be small, but their role in carbon storage is monumental. Beneath Antarctica's icy waters, these tiny crustaceans are emerging as unexpected heroes in the fight against atmospheric carbon. While the significance of blue carbon habitats like mangroves, seagrasses, and saltmarshes is well-known, recent research highlights the vital contribution of Antarctic krill and their impressive carbon storage capacity. The unsung heroes of carbon capture When we think of carbon sinks - the vital natural systems that absorb and store carbon from the atmosphere - we might...

<div>Shoreline hardening is a threat to ecosystems. Shoreline hardening, defined as the installation of structures to prevent erosion or provide flood protection, is a common practice worldwide. Over 22,000 kilometers of shoreline have been hardened in the <a href="http://www.earth.com/news/united-states-global-waste/">United States</a> alone, and many major coastal cities, such as Hong Kong and Sydney, have 50% or more of their shorelines protected by artificial structures. With growing urban populations and rising seas, these trends are expected to continue. However, despite a growing chorus of conservation practitioners advocating for more nature-based approaches to coastal protection, the science on shoreline hardening's effects has failed to keep pace. Shoreline hardening is a threat to ecosystems</div>
<div>

To address this shortcoming, a team of marine ecologists led by Rachel K. Gittman of Northeastern University conducted a meta-analysis of 54 existing studies on shoreline hardening. The results, described in the journal <a href="http://bioscience.oxfordjournals.org/lookup/doi/10.1093/biosci/biw091" target="_blank" rel="noopener noreferrer">BioScience</a>, highlight stark ecological effects of shoreline hardening and of seawalls in particular. "Biodiversity was 23% lower along shorelines with seawalls when compared with that of natural shorelines," observed the authors. Moreover, Gittman and her colleagues noted that overall organism abundance was 45% lower in seawalled areas.

The authors describe the possible mechanisms underlying this phenomenon, including the loss of shoreline habitat: "Because they are typically placed in the high intertidal zone, installation of a seawall and to a lesser extent, a riprap revetment, can sever the connection between upland and intertidal habitat, reflect wave energy and alter sediment transport, and potentially increase the depth of the intertidal and nearshore subtidal zones."

Despite this, one potentially encouraging finding was that biological diversity and the abundance of organisms were not demonstrably altered by other forms of shoreline hardening, such as riprap and breakwaters. The authors report that "some shore-protection structures may serve as surrogate habitats for native epibiota where natural hard substrates, such as oyster reefs and mussel beds, have been lost to overharvest, erosion, and poor water quality." However, Gittman and her colleagues caution that such structures may enable invasive species or have other unintended consequences: "In general, additional studies examining the ecological effects of riprap revetments and breakwaters are needed to inform future decisions on the consequences of selecting these types of structures."
###
BioScience, published monthly by Oxford Journals, is the journal of the American Institute of Biological Sciences (<a href="https://en.wikipedia.org/wiki/NASA">AIBS)</a>. BioScience is a forum for integrating the life sciences that publishes commentary and peer-reviewed articles. The journal has been published since 1964. AIBS is a meta-level organization for professional scientific societies and organizations that are involved with biology. It represents nearly 160 member societies and organizations. Follow BioScience on Twitter <a href="http://www.twitter.com/BioScienceAIBS" target="_blank" rel="noopener noreferrer">@BioScienceAIBS</a>.

Oxford Journals is a division of Oxford University Press. Oxford Journals publishes well over 300 academic and research journals covering a broad range of subject areas, two-thirds of which are published in collaboration with learned societies and other international organizations. The division been publishing journals for more than a century, and as part of the world's oldest and largest university press, has more than 500 years of publishing expertise behind it. Follow Oxford Journals on Twitter <a href="http://www.twitter.com/OxfordJournals" target="_blank" rel="noopener noreferrer">@OxfordJournals</a>.

</div>
<div>

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.

</div>

Shoreline hardening is a threat to ecosystems

Shoreline hardening is a threat to ecosystems. Shoreline hardening, defined...

<div>
<div class="img-wrapper">NASA's RapidScat instrument provided measurements of sustained wind speeds as Tropical Storm Conson continued tracking north through the northwestern Pacific Ocean. <a href="http://www.earth.com/video/nasa-app-makes-it-easy-to-measure-trees/">NASA</a> measures winds of Tropical Storm Conson.</div>
When RapidScat passed over Conson on Aug. 10, it was near peak intensity. RapidScat measured maximum sustained winds around the center of circulation as fast as 49 mph (22 meters per second/79 kph) on Aug. 10. The RapidScat instrument that flies aboard the International Space Station measures <a href="https://en.wikipedia.org/wiki/NASA">Earth's</a> ocean surface wind speed and direction over open waters.

RapidScat is an important tool for meteorologists, because it shows forecasters the location of the strongest winds in different quadrants of an area of low pressure or tropical cyclone as they are not always equally distributed. In addition, surface wind speed is always lower than speeds at higher altitude.

At 11 a.m. EDT (1500 UTC) on Aug. 11 Tropical Storm Conson's maximum sustained winds were near 40 mph (35 knots/62 kph). Conson was centered near 21.9 degrees north latitude and 154.4 degrees east longitude, about 140 nautical miles south of Minami Tori Shima. Also NASA measures winds of Tropical Storm Conson. Also the wind speeds and storm measurements of this powerful storm has shown a lot of damage. the max speeds have hit making this one of the cities largest most powerful storm.

Conson is moving to the north-northeast at 17 mph (15 knots/27.7 kph) and is expected to turn to the north-northwest. Conson does not threaten any land masses. Although the storm measured to be one of the most powerful ones, it still captured the speeds of wind and rainfall.


</div>
<div></div>

NASA measures winds of Tropical Storm Conson

NASA's RapidScat instrument provided measurements of sustained wind speeds as...

High avocado prices are fueling deforestation in Mexico. Americans' love for avocados and rising avocado prices for the highly exportable fruit are fueling the deforestation of central Mexico's pine forests as farmers rapidly expand their orchards to feed demand.

<a href="http://www.earth.com/news/healthier-food-pairings/">Avocado</a> trees flourish at about the same altitude and climate as the pine and fir forests in the mountains of Michoacan, the state that produces most of Mexico's avocados. That has led farmers to wage a cat-and-mouse campaign to avoid authorities, thinning out the forests, planting young avocado trees under the forest canopy, and then gradually cutting back the forest as the trees grow to give them more sunlight.

"Even where they aren't visibly cutting down forest, there are avocados growing underneath (the pine boughs), and sooner or later they'll cut down the pines completely," said Mario Tapia Vargas, a researcher at Mexico's National Institute for Forestry, Farming and Fisheries Research.

Given that Michoacan's forests contain much of the wintering grounds of the monarch butterfly, the deforestation is more than just an academic issue. Authorities have already detected small avocado plots in the monarchs' reserve where farmers have cut down pine forest.

Worse, Tapia Vargas said, a mature avocado orchard uses almost twice as much water as fairly dense forest, meaning less water reaches Michoacan's legendary crystalline mountain streams on which the forests and animals depend.

Greenpeace Mexico says people are likely to suffer, too.

"Beyond the displacement of forests and the effects on water retention, the high use of agricultural chemicals and the large volumes of wood needed to pack and ship avocados are other factors that could have negative effects on the area's environment and the well-being of its inhabitants," Greenpeace said in a statement.

The two-lane rural roads that cut through the mountains are choked with lines of heavy trucks carrying avocados out and pickers in to the orchards.

But it is hard to argue farmers out of the economic logic of growing avocados.

"Avocado farming is very attractive, because of the prices being the way they are," Tapia Vargas said.

Avocado prices jumped from around 86 cents apiece in January to around $1.10 in July, partly because of weak seasonal supply from Mexico. And the peso lost 16 percent of its value against the dollar over the past year, making exports cheaper for the U.S. customers. Mexican farmers can make much higher profits growing avocados than from most other crops.

It is the enormous U.S. appetite for avocados that has driven the expansion. Between 2001 and 2010, avocado production in Michoacan tripled, but exports rose 10 times, according to a report published in 2012 by Tapia Vargas' institute.

And if Super Bowl guacamole has had this effect, just wait for skyrocketing demand from China, where imports of Mexican avocados have been growing by about 200 percent annually.

"You can imagine what it will take (to supply) the Chinese market," Michoacan Gov. Silvano Aureoles told local media in July.

The Tapia Vargas report suggested the expansion caused loss of forest land of about 1,700 acres (690 hectares) a year from 2000 through 2010.

Ignacio Vidales, another government researcher who specializes in avocados, said he believes the deforestation rate has slowed, in part because authorities are taking it more seriously.

"We think that it (deforestation) is less, because there is more enforcement now than in previous years," said Vidales.

Authorities have begun to fight back.

On July 31, federal police in Morelia, the Michoacan state capital, detained 13 people and seized two avocado plants and two vehicles that were being used to turn a recently deforested plot into an orchard.

Police said 260 pine trees and 87 firs had been cut down on a 12-acre (4.7-hectare) plot to make room for 1,320 avocado saplings. While the trees take seven years to reach maturity, if each bore 100 avocados a year - a fairly low yield - those farmers could make as much as $500,000 annually from the plot, a fortune for area farmers.

"More than anything else, it is economic pressure," Vidales said. "They have seen that planting avocados is more profitable than planting corn, or other crops, or even the forest."

© 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy and Terms of Use.

High avocado prices are fueling deforestation in Mexico

High avocado prices are fueling deforestation in Mexico. Americans' love...

<div>New extraction technique makes shale oil cheaper. Also Researchers at Moscow Institute of Physics and Technology (<a href="https://en.wikipedia.org/wiki/NASA">MIPT</a>) have developed mathematical models and software that will enable Russian shale oil producers to reduce development costs. Part of the software has been registered with the patent authorities and has a program registration certificate issued by the Russian Federal Service for Intellectual Property (Rospatent)</div>
<div>

Multiple hydraulic fracturing (aka hydrofracking) is a standard shale oil <a href="http://www.earth.com/news/plant-sugars-rival-petroleum/">extraction</a> technique. It involves the high-pressure injection of fluid into a horizontal borehole. The fluid used is typically water with sand or other specially designed additives (called proppants). The rock formation is first fractured by water, allowing oil to flow freely into the borehole. When the pressure is released, the fractures are held open by the proppant (e.g. sand). This speeds up oil extraction and increases production output. However, this technique relies on preliminary calculations; if these are ignored, enormous financial losses could follow.

In multiple hydrofracking, the precise manner in which fractures are formed (their shape, aperture, and geometry) is determined based on very complex calculations that predict how rock will respond to stress. These predictions belong, scientifically speaking, to the domain of material failure theory. As of now, rock mechanics offers no unified theory to describe the process of material failure. For this reason, predicting the behavior of hydraulically fractured rock is a challenging task. Failing to correctly predict crack propagation and rock failure can, nevertheless, lead to well flooding or disturbance of the gas layer. In both cases, development costs will far exceed the revenue. To simulate the behavior of fractured rock and thus eliminate potential risks, computer modelling is normally used.New extraction technique makes shale oil cheaper

The restrictions imposed on Russian oil-related services by the EU and the US in 2014, along with the main Western sanctions package, included the prohibition of the export of specialized software to Russia. At that point, there were no alternatives to this software available on the Russian market. In view of this, several major international credit rating agencies--among them FitchRatings--prophesied that any shale oil projects in Russia would become unprofitable, which in turn would damage the oil industry as a whole.

Not only did a team of MIPT's researchers succeed in designing the necessary software--their unique software package is unlike those offered by Western competitors. Focusing on industrial applications, MIPT cooperated with the Gazpromneft Scientific and Technical Centre, a Gazpromneft subsidiary.

Ivan Zavialov and Natalia Zavialova, researchers at the Section (Department) of Applied Mechanics of Moscow Institute of Physics and Technology talked about the benefits of the software: 'Based on mathematical calculations, our software suite tells you how fractures will affect each other and what their propagation trajectories will be. It predicts new physical properties acquired by the fractured rock formation. In hydrofracking, it is necessary to make sure that the formation of a new fracture does not cause compression of a previously formed fracture. This maximizes oil recovery.'

Using the data obtained with the help of MIPT's simulator, oil-company engineers can model multiple hydraulic fracturing solutions for any oilfield. This technology will ensure maximum profitability of the Russian businesses that work with unconventional oil (classified as 'hard-to-recover' in Russia), while minimizing the associated environmental risks. Perhaps it could even make Russia a leading producer of shale oil.


</div>
<div></div>

New extraction technique makes shale oil cheaper

New extraction technique makes shale oil cheaper. Also Researchers at...

Geoffrey Hargreaves

Ancient ice cores reveal clues about Earth's past climate. Inside a huge walk-in freezer in suburban Denver, a college student in a thick parka shoots a jolt of electricity through a yard-long column of ancient ice extracted from <a href="https://en.wikipedia.org/wiki/Antarctica">Antarctica.</a>
Just outside the freezer, in a much warmer room, a computer wired to the ice registers a sudden spike in a jagged red line crawling across the screen.
"Hey, we got a volcano," says T.J. Fudge, a University of Washington researcher. The electric current has detected a thin layer of volcanic residue in the ice, deposited by an eruption about 8,000 years ago.
This is the National Ice Core Laboratory in Lakewood, where ice pulled from the depths of Antarctica and <a href="http://www.earth.com/news/winter-rain-greenland-ice-loss/">Greenland</a> is sliced up, photographed and tested. Most of it is shipped to other labs, where researchers do more experiments looking for clues about Earth's past and future.
Smooth and milky white, the 4- to 5-inch-diameter pieces - called ice cores - provide scientists with a wealth of historical information, from air temperature to greenhouse gases to evidence of cosmic events. The record reaches as far back as 800,000 years.
The ice is the remnant of centuries of snowfall, compressed by the weight of successive years of accumulation.
"You can drill into it, and it's much like looking at tree rings," Fudge said. "It's just year after year after year of climate information that's preserved out in the ice sheet."
Specialized drilling rigs pull the cores from as deep as 9,800 feet below the surface of the ice sheets. Crews then tuck them into protective tubes, pack them in chilled containers and ship them to the U.S. Refrigerated trucks haul them to Colorado lab, which is funded by the National Science Foundation.
In a bustling, white-walled workroom in the Lakewood freezer - kept at about minus 11 Fahrenheit - workers push the cores through a series of saws on metal frame benches, divvying up the ice according to a prearranged pattern for different experiments.
Part of every ice core is archived in another, larger room at about minus 33 degrees, so future researchers can verify old results or try new tests. The archive contains nearly 56,000 feet of ice.
Scientists tease data from the ice in various ways. Differences in the weight of molecules in the frozen water hold clues about the air temperature at the time the snow fell.
Air trapped in bubbles can be analyzed to measure how much carbon dioxide and other gases were in the atmosphere when the ice formed.
A solar flare or other cosmic events can leave distinctive radioactive atoms on the snow. Dust blown in from distant continents offers clues about atmospheric circulation.
"The ice sheets are in direct contact with the atmosphere," said Mark Twickler, the lab's science director. "Everything that's in the atmosphere we capture as time goes by, and it gets buried in snow."
The depth of the core and evidence of volcanoes help determine how old the ice is.
Scientists already know when major eruptions occurred, so a layer of volcanic residue indicates the year the adjacent ice formed. That becomes a reference point for annual layers above and below.
The record is remarkably precise, even reflecting seasonal changes, scientists say.
"It's as if we're standing on the ice sheet writing down the temperature for the last 800,000 years," said Bruce Vaughn, a University of Colorado-Boulder lab manager who works with the ice. "It's that good."
Without a record of its depth and age, the ice has little research value, said Geoffrey Hargreaves, curator of the Lakewood lab.
"An ice core without any depth references - I shouldn't say this - it's good for margaritas," he said, poker-faced.
No, Hargreaves said, scientists don't actually do that.
"There's drill fluids in these things that you really don't want to drink," he said.
Some experiments are done only on ice from the core's interior, away from the fluids.
Ice cores have led scientists to significant conclusions about climate, including that CO2 levels in the atmosphere today are higher than at any other time recorded in the ice.
"The only reason we can make that statement is because we have the ice core air archived," said Murat Aydin, a researcher at the University of California-Irvine. Ancient ice cores reveal clues about Earth's past climate
Ice cores also help refine computer models used to make climate predictions.
"If we run them backwards with the parameters that we measure in the ice core and we get it right, that gives us a lot more confidence in the climate models going forward," Vaughn said.
As technology improves, researchers find new ways to analyze the ice. A technique called continuous flow analysis lets them slowly melt a one-yard stick of ice and analyze it drop-by-drop, instead of cutting it into small pieces, melting them one-by-one and averaging the results. The new technique gives scientists up to 2,400 measurements per yard instead of 20, Vaughn said.
"There'll be science for dozens of years with researchers who are maybe only now getting their degrees or learning about this," Vaughn said. "It's exciting. How could you not be excited about it?"
---
Follow Dan Elliott at <a href="http://twitter.com/DanElliottAP.">http://twitter.com/DanElliottAP.</a> His work can be found at<a href="http://bigstory.ap.org/content/dan-elliott.">http://bigstory.ap.org/content/dan-elliott.</a>
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Ancient ice cores reveal clues about Earth's past climate

Ancient ice cores reveal clues about Earth's past climate. Inside...

Officials are skeptical about pallid sturgeon protection program A group of Montana and federal wildlife officials has expressed opposition to a $57 million concrete dam and fish bypass that the U.S. government says would help an ancient and endangered fish species in the <a href="http://www.earth.com/news/exxon-agrees-yellowstone-river-oil-spill-settlement/">Yellowstone River.</a>
The U.S Army Corps of Engineers and Interior Department are proposing the irrigation dam and bypass on the lower Yellowstone near the Montana-North Dakota border. That's where aging pallid sturgeon have been trapped for decades downstream of their spawning grounds.<a href="https://en.wikipedia.org/wiki/NASA"> NASA</a>
But wildlife officials from a government-sponsored pallid sturgeon recovery group dismissed the project's alleged benefits for the fish as "unfounded" and "purely theoretical." Officials are skeptical about pallid sturgeon protection program
The group, known as the Upper Basin Pallid Sturgeon Workgroup, includes representatives of state and federal wildlife agencies, the U.S. Army Corps of Engineers and Interior's Bureau of Reclamation.
The group's concerns were detailed in a July 28 letter to the Army Corps that was obtained by The Associated Press. It puts the Interior and Army Corps in the awkward position of promoting a costly construction project opposed by a group that includes members of their own staffs and other agencies.
Project manager Tiffany Vanosdall said the Army Corps continues to believe the dam and fish bypass would help sturgeon. An environmental study of the project is due to be completed late this year, Vanosdall said.
"We are working on other analyses of why we believe the bypass channel would work," she said.
Pallid sturgeon - with their shark-like shape and long snout - have changed little over the past 200 million years, earning the species recognition among scientists as a "living fossil."
The bypass would be located northeast of Glendive, Montana.
It's meant to give sturgeon access to upriver spawning grounds while maintaining an irrigation system that serves more than 50,000 acres of farmland in Montana and North Dakota. The recovery group's letter said it would be better to remove an existing rock weir on the river that traps the decades-old fish downstream.
"We believe the most beneficial alternative for pallid sturgeon would involve removing the existing barrier to provide full-river passage," the group wrote. "Across North America, sturgeon species have exhibited little success with fish passage structures."
The July 28 letter was signed by the sturgeon recovery group's chairman, Zachary Shattuck, a native fish specialist with Montana Fish, Wildlife and Parks.
Shattuck has since asked to rescind the letter, over concerns that it was not reviewed by senior officials at the U.S. Fish and Wildlife Service, which has oversight for the recovery group.
"The decision to rescind the letter doesn't reflect on the nature of the comments," said Greg Lemon, a spokesman for Montana Fish, Wildlife and Parks. "It just reflects a mistake in the process."
Shattuck said Wednesday that the comments were made on behalf of the sturgeon recovery group, not just himself. But he said he did not want to send "mixed signals" about the project and referred further questions to U.S. Fish and Wildlife Service Assistant Regional Director Mike Thabault.
Thabault said the federal agency supports the fish bypass as the best alternative for the fish while also maintaining irrigation. He acknowledged "there's room for debate" and not everyone in the scientific community agrees.
Thabault confirmed that his agency had concerns about the contents of the recovery group's letter, adding that the objections to the dam and bypass should have been taken to the agency's regional director instead of submitted to the Army Corps. But Fish and Wildlife Service personnel did not ask Shattuck for a retraction, Thabault said.
A representative of Defenders of Wildlife, Jonathan Proctor, said the recovery group's comments come at a crucial time for sturgeon, which face potential extinction in the Upper Missouri River Basin unless they can get upriver to spawn.
"Their own biologists have stated clearly that this will not work and the best solution is to restore a free-flowing Yellowstone River," Proctor said. Defenders of Wildlife and the Natural Resources Defense Council sued to stop the project last year.
As a result, U.S. District Judge Brian Morris blocked construction of the dam just as it was set to begin last September. The government's plan includes a 2-mile concrete channel for sturgeon to get around the dam, but Morris said the agencies never proved it would work.
---
Follow Matthew Brown on Twitter at <a href="https://twitter.com/matthewbrownap">https://twitter.com/matthewbrownap</a>
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Officials are skeptical about pallid sturgeon protection program

Officials are skeptical about pallid sturgeon protection program A group...

<div>
<div class="img-wrapper">Study: Marine animals live longer at high latitudes. Researchers in the Department of Earth Sciences have shown that high-latitude marine animals live longer and grow slower than those in the tropics. Their findings are the subject of an article in the "Proceedings of the Royal Society B" (The Royal Society, 2016). <a href="https://en.wikipedia.org/wiki/NASA">NASA</a></div>
David Moss, a Ph.D. student in the Earth sciences department, located in the College of Arts and Sciences, is the article's lead author. Study: Marine animals live longer at high latitudes

"We've created a global database of more than 1,100 populations of marine bivalves, documenting their maximum reported lifespan and growth rate, along with body size," he says, referring to animals such as oysters, clams, scallops and mussels. "Cold-blooded marine animals, such as bivalves, are influenced by their environment, so latitudinal patterns that exist in bivalves likely exist in other invertebrates, too."

After months of work by Moss and other members of the Earth sciences department, two patterns have emerged. The first reveals that, as a bivalve's lifespan increases, its growth rate decreases. The second shows that long life and slow growth are common among animals near the North and South poles, whereas tropical bivalves, close to the equator, are fast-growing and short-lived.

"As the poles are thought to harbor ecosystems like those from millions of years ago, our data suggest that more ancient animals were slow-growing," Moss says.

Professor Linda Ivany '88, in whose lab Moss is based, says bivalves are just as abundant in the fossil record as they are in today's oceans. As a result, she and her students can easily recover bivalve lifespans and growth rates by studying the bands in their fossilized shells, a process analogous to tree-ring dating.

Ivany says this kind of work has implications for the study of the evolutionary history of life on Earth, and may help explain why the metabolism of cold-blooded animals has changed over time.

"Research shows that marine animals have gotten bigger over the last 500 million years," Ivany says. "Because body size is determined by how fast you grow and how long you grow, this work sets the stage for us to move back in time and answer evolutionary questions about why and how animals have gotten bigger."

Based on his group's observations, Moss argues that the increase in body size of marine bivalves throughout the Phanerozoic, the current geologic eon stretching back more than 540 million years, should be accompanied by a shift to faster growth and a shorter lifespan.

Moss also hopes to pinpoint why biodiversity is high in the tropics and low near the poles.

"Short generation times and high mutation rates associated with short lifespan and fast growth enable new species to appear at a faster rate in the tropics," he says. "The distribution of lifespan and growth with latitude might help explain one of the more fundamental patterns in the evolutionary and ecological history of animal life on the planet: the latitudinal diversity gradient."
###
In addition to Moss and Ivany, the article is co-authored by Emily Judd, also a Ph.D. student in Earth sciences; Patrick Cummings '17, Claire Bearden '16, and Woo-Jun Kim '15, all undergraduates at the time of the project; and Emily Artruc and Jeremy Driscoll, 2016 graduates of the SUNY College of Environmental Science and Forestry.

All of the A&amp;S participants have belonged to Ivany's lab.

</div>

Study: Marine animals live longer at high latitudes

Study: Marine animals live longer at high latitudes. Researchers in...

<div>
<div class="img-wrapper">Coral bleaching caught in action. Also BRISBANE, Australia: Coral researchers have for the first time captured the specific behaviour of a coral as it's bleaching.</div>
The team from <a href="http://www.qut.edu.au/" target="_blank" rel="noopener noreferrer">QUT</a> in Australia used a clever combination of microscope, digital camera and smart tablet to record close-up, detailed time-lapse videos of a coral species' physical reaction to heat stress, showing evidence for the first time that it employs pulsed inflation.

To simulate rising sea surface temperatures, researchers <a href="http://staff.qut.edu.au/details?id=lewisbm" target="_blank" rel="noopener noreferrer">Brett Lewis</a> and Dr <a href="http://staff.qut.edu.au/staff/nothdurf/" target="_blank" rel="noopener noreferrer">Luke Nothdurft</a> from QUT's marine facility in the <a href="http://www.qut.edu.au/science-engineering/our-schools/school-of-earth-environmental-and-biological-sciences" target="_blank" rel="noopener noreferrer">School of Earth, Environmental and Biological Sciences</a> placed solitary corals, Heliofungia actiniformis, into controlled aquaria, before heating the water up.Coral bleaching caught in action

Their resulting videos, described in the peer-reviewed <a href="http://link.springer.com/article/10.1007/s00338-016-1473-5" target="_blank" rel="noopener noreferrer">Coral Reefs</a>, show the unhappy corals belching Symbiodinium, tiny algae cells that live within coral tissue and give corals their vibrant colours.

"What's really interesting is just how quickly and violently the coral forcefully evicted its resident symbionts," said Mr Lewis, from QUT's <a href="http://www.qut.edu.au/science-engineering" target="_blank" rel="noopener noreferrer">Science and Engineering Faculty</a>.

"The H. actiniformis began ejecting the symbionts within the first two hours of us raising the water temperature of the system."

Mr Lewis said previous studied had shown H. actiniformis was one of the very few corals on the Great Barrier Reef considered to be relatively resilient to bleaching, even as neighbouring species suffered the full effects.

"Our observations suggest this resilience could be due to the rapid expulsion of the coral's algal symbionts during thermal stress, and could very well increase H. actiniformis's chance of survival during abnormally high sea temperatures."

During the experiments, the team raised the water temperature in a 10-litre aquarium system from 26oC to 32oC over 12 hours, where it remained for up to eight days.

While scientists have known for some time that coral bleaching occurs when the relationship between the coral and their Symbiodinium breaks down as ocean temperatures rise, the QUT team's time-lapse videos show for the first time how this coral removes the algae.

"Our H. actiniformis used a pulsed inflation to expel Symbiodinium over time (seen as greenish plumes in the video) - inflating their bodies to as much as 340 per cent of their normal size before suddenly and violently contracting and ejecting Symbiodinium through their oral openings over the four to to eight day duration of the experiments" Dr Nothdurft said.

Dr Nothdurft said reef-building corals and their algal Symbiodinium had evolved to form a mutually-beneficial relationship.

"Coral provide Symbiodinium with protection and surface area for photosynthesis, while the excess sugars created by the algae supply the majority of the coral's daily food requirements," he said.

He said expulsion of the algae removed the pigment from the corals tissue, rendering them white or transparent, referred to as coral bleaching. If environmental conditions return to normal quickly enough, some corals may regain their Symbiodinium and associated colour.

"If the Symbiodinium is removed from the host and does not recolonise quickly, the corals can die. .

"Mass coral bleaching events are a concern for scientists globally with recent events on the Great Barrier Reef highlighting the threat of elevated water temperatures to the heath of reef ecosystems."


</div>
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Coral bleaching caught in action

Coral bleaching caught in action. Also BRISBANE, Australia: Coral researchers...

<div>
<div class="img-wrapper">Endangered species wait an average of 12 years for protection. The Endangered Species Act (ESA) was enacted by Congress in 1973 to protect species threatened with extinction. To receive protection, a species must first be listed as endangered or threatened in a process that is administered by the U.S. Fish and Wildlife Service. A two-year timeline for the multi-stage process, which starts with submission of a petition and ends with a final rule in the Federal Register, was established in 1982 by a Congressional amendment to the ESA. Now, a new study from the University of Missouri found that many species are encountering much longer wait times before receiving the endangered designation. Scientists studying the ESA believe that delays could lead to less global biodiversity.</div>
"While the law lays out a process time of 2 years for a species to be listed, what we found is that, in practice, it takes, on average, 12.1 years," said Emily Puckett, who recently received her doctorate in the Division of Biological Sciences in the MU College of Arts and Science. "Some species moved through the process in 6 months but some species, including many flowering plants, took 38 years to be listed -- almost the entire history of the ESA."

Findings are based on an analysis of 1,338 species listed for protection under the ESA between January 1974 and October 2014. Researchers analyzed the amount of time it took each listed species to move through the listing process. Researchers also analyzed whether a species grouping influenced how quickly or slowly it moved through the process. They found that vertebrates, including reptiles, fish, birds, amphibians and <a href="https://www.bing.com/search?q=mammals&amp;cvid=6bfef0a0fce343da8ca9fb1c56475818&amp;FORM=ANAB01&amp;PC=HCTS">mammals</a> had a significantly shorter wait time than did invertebrates and flowering plants. According to the authors, the finding suggests a bias in the listing process that contradicts the policies of the ESA.

"While the Service can account for species groups in its prioritization system, it's not supposed to be mammals versus insects versus ferns but, rather, how unique is this species within all of the ecological system," Puckett said. "However, our findings suggest some bias that skews the process toward vertebrates."

The delays in listing have real world consequences for endangered species. In the study, the authors cite previous studies that document species that went extinct due to a delay in the process. Likewise, a species that gets listed quickly and has a conservation plan put in place to protect it may have a chance to even bounce back. For example, the island night lizard was listed in 1.19 years, whereas the prairie fringed orchid took 14.7 years to be listed. The <a href="http://www.earth.com/news/tropical-lizards-are-surprisingly-adaptable-to-climate-extremes/">lizard</a> has since recovered and been removed from endangered status; the orchid is still considered threatened. Endangered species wait an average of 12 years for protection

"The whole point of putting species on the list is they already have been identified as threatened or endangered with extinction," Puckett said. "Without being on the list, we run the risk that these populations will go locally or globally extinct and there will be nothing to save."

The study, "Taxa, petitioning agency, and lawsuits affect time spent awaiting listing under the U.S. Endangered Species Act," appears in the early online edition of the journal Biological Conservation. The study was supported in part by a University of Missouri Life Sciences Fellowship and by The Institute for Bird Populations. The content is solely the responsibility of the authors and does not necessarily represent the official views of the funding agencies.


</div>
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Endangered species wait an average of 12 years for protection

Endangered species wait an average of 12 years for protection....

<div>Global warming is creating saltier beaches. Batches of sand from a beach on the Delaware Bay are yielding insights into the powerful impact of temperature rise and evaporation along the shore that are in turn challenging long-held assumptions about what causes beach salinity to fluctuate in coastal zones that support a rich network of sea creatures and plants.</div>
<div>

The findings have implications for the migration and survival of invertebrates such as mussels and crabs as global warming drives temperatures higher.Global warming is creating saltier beaches

A first major study of the effects of evaporation on the flow of subsurface water and salinity, or salt content, in the beach intertidal zone - the section of the beach between the low and high tide marks - is being published today in Scientific Reports, an online affiliate of Nature.

The study, by New Jersey Institute of Technology's Center for Natural Resources Development (<a href="https://en.wikipedia.org/wiki/NASA">CNRDP</a>) and led by two environmental engineers and a coastal geologist, shows that sediments from some sections of Slaughter Beach in <a href="http://www.earth.com/news/blood-sucking-kissing-bug/">Delaware</a> have salt concentrations four times as high as the ocean water that washes over them. The finding came as a surprise.

The nearshore seawater the team measured had salt concentrations of 25 grams per liter (g/L), leading the researchers to expect that the subsurface water in areas of the beach it infiltrated would have similar or even lower levels as seawater mixes with inland groundwater in this zone. However, they discovered that the average salinity in the upper intertidal zone - the high tide line - was 60 g/L, with some values reaching as high as 100.

"These elevated levels can only be caused by evaporation, as there is no other mechanism for increasing the salt in pore water - the water trapped between the grains of sediment," said Xiaolong Geng, a postdoctoral fellow at NJIT and the principal author of the study, noting that the rates of evaporation - and salinity - are thus mainly determined by temperature and relative humidity, while tide and wave flows dilute a beach's salt content.

"Previous studies have identified seawater as the primary source of salinity in coastal aquifer systems, thereby concluding that seawater infiltration always increases pore-water salinity by seawater-groundwater mixing dynamics," said Michel Boufadel, director of the CNRDP, who is also an author of the study. "Based on what we learned, we think this finding should alter the way water management in coastal areas is conducted."

The team analyzed nearly 400 sediment samples collected during the sequential phases of a complete tidal cycle, from day to night, on seven discontinuous days.

The intertidal, or littoral, zone, is a dynamic habitat, washed by seawater at high tide and uncovered at low tide, that is favored by crabs, mussels and sea anemones, the birds and sea mammals that feed on them, and plants such as kelp. Many of these animals burrow in the beach to find food and to seek protection from predators and the action of waves, and are in near constant contact with pore water.

The researchers have developed models that show that increases in temperature associated with global warming will not only make inland locations more salty, but would also create drastically different pattern of pore water salinity that will have implications for animals and plants in the intertidal zone.

"Evaporation is an important driver of underground water flow and salinity gradients, and animals such as mussels and crabs are affected by changes in salinity. If the concentrations are too high or too low, they will move away," noted Geng.

Nancy Jackson, a professor of coastal geomorphology in the Department of Chemistry and Environmental Science and the study's third author, collected the beach samples from Slaughter Beach and provided interpretations of pore water dynamics.
###
About NJIT

One of the nation's leading public technological universities, New Jersey Institute of Technology (NJIT) is a top-tier research university that prepares students to become leaders in the technology-dependent economy of the 21st century. NJIT's multidisciplinary curriculum and computing-intensive approach to education provide technological proficiency, business acumen and leadership skills. With an enrollment of 11,300 graduate and undergraduate students, NJIT offers small-campus intimacy with the resources of a major public research university. NJIT is a global leader in such fields as solar research, nanotechnology, resilient design, tissue engineering and cybersecurity, in addition to others. NJIT ranks fifth among U.S. polytechnic universities in research expenditures, topping $110 million, and is among the top 1 percent of public colleges and universities in return on educational investment, according to Payscale.com. NJIT has a $1.74 billion annual economic impact on the state of New Jersey.

</div>

Global warming is creating saltier beaches

Global warming is creating saltier beaches. Batches of sand from...

<div>
<div class="img-wrapper">NASA's Terra satellite captured an image of extra-tropical cyclone Conson's clouds spread Japan's northern most island, the Sea of Okhotsk and Russia's Kamchatka Peninsula.Extra-tropical cyclone Conson in Sea of Okhotsk</div>
On Aug. 15, 2016 the Moderate Resolution Imaging Spectroradiometer aboard <a href="https://en.wikipedia.org/wiki/NASA">NASA's</a> Terra satellite captured a visible image of the clouds associated with the extra-tropical cyclone. In the image, clouds covered Japan's island of Hokkaido and stretched over the Sea of Okhotsk and the southern portion of Russia's Kamchatka Peninsula. Alth0ugh the typhoon has caused a lot of damage to the country there will always be the community there to help pick it back up. Also these storms cause a lot more than damage. They also hurt the buisnesses and peoples living situations, such as when they can come back to live and work. Japan is known to have these massive typhoons that cause tragic damage.

&nbsp;

Hokkaido is Japan's second largest island and the largest and northernmost prefecture. The Kamchatka Peninsula is located in far eastern Russia and is about 776 miles (1,250 kilometers) long. The peninsula is between the Sea of Okhotsk to the west, and the Pacific Ocean to the east.

The Joint <a href="http://www.earth.com/image/typhoon-lingling-moves-through-the-yellow-sea/">Typhoon</a> Warning Center issued the final warning of Conson on Sunday, Aug. 14.


</div>
<div></div>

Extra-tropical cyclone Conson in Sea of Okhotsk

NASA's Terra satellite captured an image of extra-tropical cyclone Conson's...

<div>Record-setting rainfall and flooding in southern Louisiana have been calculated at NASA with data from satellites.NASA analyzes deadly Louisiana flooding</div>
<div>

An extremely severe rainfall event hit the states of Louisiana and southern Mississippi when a very slow moving low pressure system continuously pulled tropical moisture from the Gulf of Mexico.

Measurements by the Global Precipitation Measurement or GPM mission core observatory satellite showed that rainfall intensity within the low pressure system actually increased on Aug. 12 as the low pressure area bringing the rainfall settled over southeastern Louisiana. GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency JAXA.

At least 4 people have died in record flooding after the unusually heavy rainfall starting falling the week of Aug. 8. More than 27 inches (686 millimeters (mm)) of rain have been reported in the area. This is the second time this year that record flooding rainfall has hit <a href="http://www.earth.com/news/hunter-fined-killing-black-bear/">Louisiana</a>. At least 27 inches (686 mm) of precipitation was also reported in Louisiana during the middle of Mar. 2016 and also caused record flooding.

At NASA's Goddard Space Flight Center in Greenbelt, Maryland, <a href="https://en.wikipedia.org/wiki/NASA">NASA'</a>s Integrated Multi-satellite Retrievals for GPM (IMERG) data were used to make estimates of total rainfall over the northern Gulf of Mexico during the period from Aug. 8 to Aug. 15, 2016.

[ooyala code="Ztc2RjNTE6Sc2yIxw45F_8qcBnP43taZ" player_id="ce75157bc770441eaf5e849ae4d1d21f" auto="true" width="896" height="504"]

The IMERG data showed heavy rainfall totals moving toward the northwest from the Florida Panhandle into the central northern Gulf coast. Over 20 inches (508 mm) of rainfall was estimated in large areas of southeastern Louisiana and extreme southern Mississippi. Even greater rainfall totals of 30 inches (762 mm) were indicated in a small area of Louisiana west of Lake Pontchartrain.

Heavy rainfall and flooding is now predicted to occur northward into the Mississippi valley as tropical moisture continues to be transported northward and interacts with a nearly stationary frontal system. Heavy rainfall has also recently affected southeastern Texas and western Louisiana.

The National Weather Service (NWS) in New Orleans, Louisiana noted in a forecast discussion on Aug. 15, "As historical and devastating river flooding continues over areas between Baton Rouge and Lake Maurepas, the weather has returned to a more typical summer pattern with isolated to scattered showers and thunderstorms developing with daytime heating."NASA analyzes deadly Louisiana flooding

NWS also noted that several of the rivers in and around the greater Baton Rouge area still remain at high levels after peaking at record or major crests. NWS noted that several points downstream and close to Lake Maurepas still have a way to go before broad cresting. NWS New Orleans cautioned that some locations will also undergo backwater flooding well away from the main streams, so this event remains in full swing.


</div>
<div></div>

NASA analyzes deadly Louisiana flooding

Record-setting rainfall and flooding in southern Louisiana have been calculated...

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Today’s Video of the Day from <a href="https://www.igb.illinois.edu/">Carl R. Woese Institute for Genomic Biology</a> reveals how scientists can modify common crops like soybean, rice, and wheat to protect them from heat stress.



“We need to double crop production by 2050 to feed a growing global population, and not only are we not on track to do that, but climate change is further complicating things,” said Amanda Cavanagh, a lecturer at the University of Essex. 



The study is part of Realizing Increased Photosynthetic Efficiency (RIPE), an international research project that aims to develop food crops that turn the sun’s energy into food more efficiently.



“Using an engineering approach we designed multiple alternative metabolic pathways to photorespiration. Testing them in the field showed increases in productivity which led Amanda to significantly move the project forward by showing our engineered plants can withstand pretty extreme temperature stress,” said study co-author and RIPE researcher Paul South.&nbsp;



“As the climate changes and temperature stresses increase the pressure on our global food supply, farmers will need every tool available including engineering approaches like the synthetic biology used here to maintain safe and productive harvests.”



The experts tested plants modified to have more efficient photorespiration to see if they were better adapted to warmer temperatures.&nbsp;



The team found that the engineered plants produced 26 percent more biomass than the wild-type plants exposed to the same temperatures, and had 15 percent less yield loss under the higher temperatures.



Video Credit: Amanda Nguyen/University of Illinois



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Designing crops that can beat the heat

[sendtonews key="QGPzYnXEtN-1712599-12187" type="single"] Today’s Video of the Day from Carl...

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes the first comprehensive estimate of carbon density in the Saharan, Sahel, and Sudanian zones of Africa. In an effort to measure the amount of carbon stored across these drylands, a team of scientists used high-resolution satellite images and artificial intelligence to map nearly 10 billion individual trees. 



"The high spatial resolution (50 cm) combined with AI and field measurements used in this study is key to improving tree inventories in drylands," said Pierre Hiernaux, a French researcher working for NASA. "The ever-increasing availability of very high-resolution satellite imagery will make it possible to assess carbon pools and their dynamics at the individual tree level on a global scale."



"This study is exceptional because it is pioneering a type of approach that will revolutionize the monitoring of trees and forests on a global scale: in the short term, it will be possible to map the world's trees from the centre of the Amazon to our schoolyards," said <a href="https://www.inrae.fr/en">INRAE</a> researcher Jean-Pierre Wigneron.



"Many fields of application will become much more efficient and accurate, such as tracking carbon stocks, biodiversity, monitoring logging and protection against illegal forest degradation, in near real time.”



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Remote sensing will revolutionize the way we monitor trees

[sendtonews key="EjmSP20gQK-2593093-12187" type="single"] Today's Video of the Day from NASA...

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Lesotho: Africa's "Kingdom in the Sky" Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features northwest Lesotho in South Africa.



According to ESA, Lesotho is the only nation in the world that lies completely above 1,000 m in elevation. The country is famous for its tall mountains and narrow valleys, and is known as Africa's "Kingdom in the Sky."



Out of a population of around two million people, about 80 percent live in rural areas. More than 75 percent of these people are engaged in <a href="https://www.earth.com/news/climate-change-will-have-a-global-impact-on-agriculture/">agriculture</a>, including rainfed cereal production and animal grazing.&nbsp;



ESA reports that the country’s agricultural system faces a growing number of issues, with climate-related vulnerabilities such as drought, floods and extreme temperatures occurring more frequently. 



Diamonds are amongst the minerals found in the mountains. Indeed, Lesotho can truly be called the Kingdom in the Sky. Beautiful, culturally rich, safe, affordable, and easily accessible from Durban and Johannesburg, mountainous Lesotho is a vastly underrated travel destination. the Kingdom of Lesotho (Sotho: 'Muso oa Lesotho) is an enclaved country in southern Africa. It is just over 30,000 km2 (11,583 sq mi) in size and has a population of around 2 million.



Video Credit: ESA&nbsp;&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Lesotho: Africa's "Kingdom in the Sky"

[sendtonews key="uV9Lh2fQbV-1760058-12187" type="single"] Lesotho: Africa's "Kingdom in the Sky" Today’s...

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> features a visual dataset of.methane emissions from wetlands across the globe. Atmospheric methane levels have reached record highs in recent years, and wetlands are a major source of these emissions.&nbsp;



"Methane is an important greenhouse gas that contributes substantially to global warming. On a molecule by molecule basis, methane is much more efficient at trapping heat than carbon dioxide, the main driver of warming," says NASA.



"Though human activities, including agriculture, oil and natural gas production and use, and waste disposal, collectively contribute the majority of methane to the atmosphere, about a third of total methane emissions comes from wetlands."&nbsp;



According to NASA, understanding methane emissions from wetlands and other natural sources is critically important for scientists and policymakers who are working to combat climate change by reducing emissions from human activities.



Video Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Wetlands are a major source of methane emissions

[sendtonews key="f8fukm28Vz-2491833-12187" type="single"] Today's Video of the Day from NASA...

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> reveals the evolution of the Columbia Glacier in southeastern Alaska. Columbia is among the fastest shrinking glaciers in the world, and the video documents its rapid retreat over the years.&nbsp;



Columbia Glacier is a large, multi-branched calving glacier that flows out of the Chugach Mountains to the Prince William Sound.&nbsp;



According to USGS, Columbia had a long history of stability prior to 1980, with a length 41 miles, and small, short-lived advances or retreats.



In the years since 1980, however, satellite images have captured Columbia’s alarming retreat. By using false-color images, scientists can distinguish between snow and ice, open water, vegetation, and rocky debris on the glacier’s surface.



The series of false-color images featured in today's video were acquired over the span of 35 years. You can see that by 2021, the glacier’s main branch had retreated about 15 miles from its initial position.



The Columbia Glacier has also lost more than 50 percent of its volume, mostly due to calving. <a href="https://www.earth.com/video/nasa-reveals-3d-visual-of-an-atmospheric-river/">NASA</a> reports that while climate change likely started the retreat, mechanical processes kept the disintegration going.



The NASA images are provided by Jesse Allen, Robert Simmon, Joshua Stevens, and Lauren Dauphin using data from Landsat satellites, from the U.S. Geological Survey, and data from MODIS on NASA’s Terra satellite. The structure of Columbia’s moraine played a large role in the stability of the glacier before 1980. 



Like other tidewater glaciers, the Columbia built up a moraine over time, and the mixture of ice and rock functioned like a dam keeping out the sea. It was supported on one end by the shoreline and by the underwater terminal moraine at the other.



Video Credit: NASA Earth Observatory/&nbsp; NASA’s Scientific Visualization Studio



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

The rapid retreat of the Columbia Glacier

[sendtonews key="0879czfG3k-1785905-12187" type="single"] Today’s Video of the Day from NASA...

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how record-breaking heat expressed itself around the world in 2022.



Scientists have determined that 2022 was the 5th warmest year since 1880. Furthermore, the last nine consecutive years have been the warmest on record.



From devastating floods and wildfires to natural disasters like Hurricane Ian, 2022 showed us yet again how a warming climate affects people across the globe.&nbsp;



"As we look back at 20:22 and years past, we see that each year we better understand the challenges we face and how important it is to meet them," says NASA.



Video/ Image Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

2022 illustrated the consequences of a warming climate

[sendtonews key="3UUsNkFOuS-2487333-12187" type="single"] Today's Video of the Day from NASA...

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Satellites reveal how Earth's systems are interconnected Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes Earth’s interconnected systems, and how this network is affected by rising temperatures.&nbsp;



During 2020, average global temperatures matched the hottest year on record. The hurricane season was also record-breaking, with many of the storms intensifying at extraordinary speeds. Hot water in the ocean is fuel for hurricanes. The satellite data shows that it's all one interconnected system showing how Satellites reveal how Earth's systems are interconnected.



According to NASA, dust swept up from Northern Africa plays a major role in the formation of hurricanes, and is also a key source of fertilization in the Amazon rainforest. As a result of<a href="https://www.earth.com/news/seagrass-wasting-disease-is-fueled-by-climate-change/"> climate</a> change, dust plumes are expected to decline, which will have an effect on vegetation far away.&nbsp;



Images from Earth-observing satellites show how the world’s plant life is affected by natural disasters, fires, and deforestation. Satellites also reveal how widespread changes in vegetation impact waterways,&nbsp; the climate, air quality. Satellites communicate by using radio waves to send signals to the antennas on the Earth. "Earth From Space" is a groundbreaking two-hour special that reveals a spectacular new space-based vision of our planet. 



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Satellites reveal how Earth's systems are interconnected

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Today’s Video of the Day from the <a href="https://welcome.miami.edu/">University of Miami</a> Rosenstiel School of Marine and Atmospheric Science explores how changes in water temperatures have affected tiger shark habitats and movements in the North Atlantic Ocean. The study reveals that rising temperatures have caused the sharks to shift toward the poles over the past 40 years.



“Tiger shark annual migrations have expanded poleward, paralleling rising water temperatures,” explained study lead author Neil Hammerschlag. “These results have consequences for tiger shark conservation, since shifts in their movements outside of marine protected areas may leave them more vulnerable to commercial fishing.”



The researchers analyzed nine years of tracking data from satellite-tagged tiger sharks, combined with four decades of conventional tag and recapture data provided by National Oceanic and Atmospheric Administration (NOAA) Cooperative Shark Tagging Program.



The experts found that during the last decade of record heat, for every one-degree Celsius increase in water temperatures, tiger sharks migrated further poleward by over 400 kilometers. They also migrated two weeks earlier than usual to waters off the northeastern coast of the United States.



“Given their role as apex predators, these changes to tiger shark movements may alter predator-prey interactions, leading to ecological imbalances, and more frequent encounters with humans,” concluded Professor Hammerschlag.



Video Credit: University of Miami Rosenstiel School of Marine and Atmospheric Science



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Tiger sharks are shifting poleward as temperatures rise

Today’s Video of the Day from the University of Miami...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> is focused on the melt ponds that emerge during the spring and summer on the Greenland Ice Sheet, which is the largest ice mass in the northern hemisphere.



"Melt ponds are vast pools of open water that form on both sea ice and ice sheets and are visible as turquoise-blue pools of water in this Copernicus Sentinel-2 image," says ESA.



"When snow and ice melts atop glaciers, water flows in channels and streams and collects in depressions on the surface. These melt ponds can speed up the melting of the surrounding ice since they greatly reduce the ice’s ability to reflect sunlight."



"This can create a positive feedback where an increasing number of melt ponds absorb more heat which causes ice cover to melt even faster."



According to ESA, Greenland has been hit with a late-season heatwave that began in early September. This caused the type of melt event that usually occurs in the middle of summer.



"In a recent paper published in Nature Climate Change, scientists found that major sea-level rise from the melting of the Greenland ice cap is now ‘inevitable’ even if the burning of fossil fuels were to halt overnight," says ESA. "Using satellite observations of Greenland ice loss and ice cap from 2000 to 2019, the team found the losses will lead to a minimum rise of 27 cm regardless of climate change."



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Melt ponds on the Greenland Ice Sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes how Earth is unique in our solar system for its ability to sustain liquid water on its surface. But now, the water cycle is shifting as the climate warms, and scientists must find ways to predict how these changes will affect water availability.



Overall, 96 percent of Earth's water is saltwater, and nearly all of freshwater is found in ice and groundwater. These sources of water are linked as it passes through solid, liquid and gas phases.



In a warmer climate, the water cycle will be transformed. It will be easier for water to evaporate and form clouds, and storms will become more frequent and intense. Some regions will get too much water, while others will be left without enough water. In addition, soil moisture will be lost - which threatens food security.



Scientists are using satellite data from over the last 40 years to track changes that are happening in the water cycle. This will ultimately help us prepare for extreme events and better manage our water resources, according to ESA.



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Tracking changes in Earth's water cycle

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Saturn,-,High,Resolution,3d,Images,Presents,Planets,Of,The

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard Space Flight Center</a> features images of Saturn from NASA’s Hubble Space Telescope. The photographs capture the start of the mysterious "spoke season" on Saturn - when unexplained features appear on its rings. 



According to NASA, both the cause of the spokes and their seasonal variability have yet to be fully explained by planetary scientists.



"Like Earth, Saturn is tilted on its axis and therefore has four seasons, though because of Saturn's much larger orbit, each season lasts approximately seven Earth years. Equinox occurs when the rings are tilted edge-on to the Sun," explains NASA.



"The spokes disappear when it is near summer or winter solstice on Saturn. (When the Sun appears to reach either its highest or lowest latitude in the northern or southern hemisphere of a planet.) As the autumnal equinox of Saturn's northern hemisphere on May 6, 2025, draws near, the spokes are expected to become increasingly prominent and observable."



Experts believe that the spokes may be a product of the planet's variable magnetic field. When magnetic fields interact with solar wind, an electrically charged environment is created. This phenomenon is visible on Earth as the northern lights.&nbsp;



"Scientists think that the smallest, dust-sized icy ring particles can become charged as well, which temporarily levitates those particles above the rest of the larger icy particles and boulders in the rings," says NASA.



The spokes were first observed in the early 1980s by NASA's Voyager mission. Depending on the angle of the rings, the spokes can appear dark or light.



"Thanks to Hubble's OPAL program, which is building an archive of data on the outer solar system planets, we will have longer dedicated time to study Saturn’s spokes this season than ever before," said NASA senior planetary scientist Amy Simon, head of the Hubble Outer Planet Atmospheres Legacy (OPAL) program.



"Despite years of excellent observations by the Cassini mission, the precise beginning and duration of the spoke season is still unpredictable, rather like predicting the first storm during hurricane season."



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Mysterious "spoke season" captured on Saturn

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Closeup,Of,Fresh,Green,The,Napier,Bush,Grass,As,Animal

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Today’s Video of the Day from <a href="http://www.ntu.edu.sg/">NTU Singapore</a> reveals that some plants can remove toxic heavy metals from soil.&nbsp;



The researchers analyzed samples of various tropical plant species to test for levels of heavy metals and metalloids. The study showed that there are existing plants with high levels of these contaminants, which means that these species are great candidates for drawing pollutants out of the soil.&nbsp;



Among the plants examined in the study, 12 species had accumulated several types of heavy metals and metalloids. These plants are widely available, including species that are native to Singapore.



“In a small nation like Singapore, land may be repurposed to support new development plans, so it is important that we have a green and sustainable way to remediate land that is contaminated," said Professor Lam Yeng Ming.



"We set out to uncover how to better make use of tropical plants to do phytoremediation and through advanced characterization techniques, we showed how some of these tropical plant species can be an environmentally friendly and literally a 'green' way to remove contaminants in soil."&nbsp;



"Phytoremediation also has benefits of cost effectiveness, simplicity of management, aesthetic advantages, and long-term applicability and sustainability. The strategy prevents erosion and metal leaching by stabilizing or accumulating heavy metals, so that helps reduce the risk of contaminant spread.”



Video Credit: NTU Singapore



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Plants help remove heavy metals from contaminated soil

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Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes why herbicides are not as effective in killing weeds anymore. In the 20th century, chemical companies developed thousands of herbicides. The most commonly used herbicide was glyphosate, which was introduced in 1974.



Over the past few decades, dozens of species of weeds have evolved resistance to glyphosate. Depending on the site of action, the part of the plant that an herbicide interacts with, weeds may even be resistant to herbicides that have not been developed yet.&nbsp;



With increasing resistance to glyphosate and other herbicides, weeds are - once again - becoming a major concern for farmers.&nbsp;



Video Credit: American Chemical Society&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Weeds are becoming increasingly resistant to herbicides

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Today’s Video of the Day from the <a href="https://www.jpl.nasa.gov/">NASA Jet Propulsion Laboratory</a> (JPL) describes a dust storm on Mars that was nearly twice the size of the United States. As the storm covered the southern hemisphere of the planet, some of NASA’s explorers had to delay their normal activities.



NASA’s Insight lander put itself in a "safe mode" for 11 days to conserve battery power because solar power was disrupted by the dust. The Ingenuity Mars Helicopter postponed flights until conditions improved.



"A fleet of NASA orbiters monitor Martian dust storms like this one and serve as lifelines to Earth by relaying data from the rovers and lander on the ground back to the team. This includes the Mars Reconnaissance Orbiter, MAVEN, and Odyssey," reports JPL.



"Dust storms like this recent one start close to the ground and are spread by wind as they rise – warming the cold Martian atmosphere."



The images in the video were captured by NASA’s Curiosity as the dust rolled in. A fleet of orbiters monitored the dust storm from above, relaying data from Mars’ explorers back to scientists on Earth.



Video &amp; Image Credit: NASA/JPL-Caltech/ASU/MSSS



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

NASA monitors giant dust storms on Mars

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Today's Video of the Day from the <a href="http://www.esa.int/">European Space Agency</a> features Qeshm Island in the Strait of Hormuz. This strait provides the only sea passage from the Persian Gulf to the open ocean.



Qeshm is separated from the Iranian coast by the Clarence Strait, also known as Khuran.&nbsp;The Hara Forest Protected Area is a network of shallow waterways and forest located between the island and the mainland. This protected region is home to sea turtles, snakes, and more than 150 species of migrating birds.



Qeshm is famous for its wide range of&nbsp;ecotourist&nbsp;attractions, such as the&nbsp;Hara marine forests. According to environmentalists, about 1.5 percent of the world birds and 25 percent of Iran's native <a href="https://www.earth.com/news/female-hummingbirds-avoid-sexual-harassment-by-looking-like-males/">birds</a> annually migrate to the forests, which are the first national geo park in Iran.



Tourists are also drawn to the island to see an age-old Portuguese&nbsp;fort, historic mosques, the&nbsp;Seyyed Mozaffar&nbsp;and&nbsp;Bibi Maryam&nbsp;shrines, and the "Valley of Stars."



The average temperature on the island is 81 degress and the region is often hot and humid. From June to August, the island is described as being oppressively hot. The ideal time to visit is during the winter season. 



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Qeshm Island in the Strait of Hormuz

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Inhambane Bay in southeast Mozambique.&nbsp;



"Inhambane Bay is a deep inlet into which the small Mutamba River flows," says ESA. "On one side of the bay lies the historical city of Inhambane, capital of the Inhambane Province, while the sister city of Maxixe, the economic capital of Inhambane, sits across from it. The province is the second largest grower of cashews, after Nampula, and it also produces coconut and citrus fruits."



The beaches of Barra and Tofo are popular with tourists. There are also coral reefs along the long coastline of Inhambane, making it an ideal destination for scuba diving and snorkeling.



"Mozambique’s extensive coastline heightens the country’s vulnerability to tropical cyclones that develop in the Indian Ocean as well as storm surge flooding," says ESA.



"More than half of the population lives in low lying coastal areas, putting communities at risk. Inhambane Bay was dangerously close to where Cyclone Idai made landfall in 2019 causing widespread destruction to the country."



Video/ Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Inhambane Bay in southeast Mozambique

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency </a>&nbsp;features the Kangerlussuaq Glacier, one of the largest tidewater outlet glaciers in Greenland. The glacier is located on the east coast of the Greenland ice sheet.



As human-induced climate change continues to drive up temperatures, global ice loss is accelerating at an alarming rate. ESA reports that, over the past decade alone, 3.5 trillion tons of ice have melted from the Greenland ice sheet. This is enough to cover the UK with meltwater 15 meters deep.



Based on satellite imagery, researchers determined that Kangerlussuaq entered a new phase of rapid retreat and acceleration in 2017. In their study, published in <a href="https://www.frontiersin.org/articles/10.3389/feart.2019.00123/full">Frontiers in Earth Science</a>,&nbsp; the experts report that the glacier's ice front is now at its most retreated position since the early 20th century.



"Given Kangerlussuaq’s previous impacts on both the magnitude and pattern of ice sheet wide mass loss, we predict that its new phase of retreat, acceleration and thinning will markedly enhance the south-east region’s contribution to increasing discharge from the ice sheet," wrote the study authors.&nbsp;&nbsp;



"More broadly, accurate forecasting of the ice sheet’s contribution to sea level rise will require a deeper understanding of, and responses to, these non-linear ice dynamic processes."



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Kangerlussuaq Glacier on the Greenland ice sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the complex relationship between ocean and climate. ESA's Climate Change Initiative will help us understand how oceans influence the climate and how climate change is impacting the oceans.&nbsp;



"Earth’s oceans are huge heat stores, soaking up 93% of the excess heat from human activity over the past 70 years. Ocean currents redistribute heat around the planet, from the Equator to the poles. Where this ocean heat goes influences weather patterns and regional climate," explains ESA.



"As well as absorbing heat, oceans are a natural carbon sink, absorbing a quarter of carbon dioxide emissions from human activity. This has led to the acidification of ocean water, threating marine life."



The amount of heat and carbon dioxide soaked up by the ocean depends on specific variables, including phytoplankton, temperatures, waves, salinity, and ice cover. Satellites can be used to measure these variables from space.



"From their unique vantage point, satellites provide key information for understanding the complexities of our planet and monitoring environmental issues," says ESA.



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Ocean heat influences regional climate

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the importance of monitoring the shape of the sea surface, which is constantly changing. These observations have many applications, such as ship routing, <a href="https://www.earth.com/news/the-modem-ocean-is-a-tough-place-for-whales-to-survive/">ocean</a> current forecasting, and debris tracking.



"A project supported by the Discovery element of ESA’s Basic Activities recently investigated a new technique to measure sea surface topography very precisely," reports ESA.



"The technique involves looking at satellite navigation (GNSS) signals that have been reflected off of the sea surface at very low angles. At these so-called grazing angles, waves and surface roughness have very little impact on the reflection process; the sea surface acts as a very smooth mirror."



Estel Cardellach is the principal investigator at the Institute for Space Studies of Catalonia, who first submitted the idea for the project.



“In a mirror-like reflection the phase of the signal can be tracked – it is continuous," said Cardellach. "Different surface heights result in different phase measurements. It gives a very precise measurement of the surface altitude at a few centimetres’ precision.”



The researchers developed a GNSS receiver and set up an experiment in the Balaeric Islands to collect signals from the receiver that were reflected off the sea surface. Ultimately, these signals will provide improved measurements of the shape of the sea surface.



Image/ Video Credit: ESA



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Monitoring the dynamic shape of the sea surface

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Aerial,Photo,Of,River,In,Amazon,Rainforest,Jungle,In,Peru

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Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA’s Goddard Space Flight Center</a> describes how scientists are using autonomous sound sensors to monitor deforestation in the Amazon. By recording soundscapes, the experts can determine which animals are present through their distinct sounds.&nbsp;



Using this method, sounds can be used as scientific measurements to analyze the effects of deforestation. The researchers will gain a better understanding of how the acoustics of a forest can be used to measure its health.&nbsp;



"From space, parts of the Amazon rainforest that have previously been logged or burned may look lush and green, like a place buzzing with activity and full of sounds. But inside the rainforest, the animal life may tell a different story, of a harsh environment and a quieter soundscape," says NASA.



Video Credit: NASA’s Goddard Space Flight Center&nbsp;



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Monitoring deforestation in the Amazon through sounds

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