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Tag: "wetlands" at biology news

South America's vast pantanal wetland may become next everglades, UNU experts warn

... of 3° to 4°C could eliminate 85% of all remaining wetlands in the world. It says wetlands hold roughly one-sixth of all carbon held in terrestrial sinks, most of it organic matter in soil wh...

Road salt affects mitigation wetlands

...ers may be the way to go when planning constructed wetlands to replace those destroyed during road building, b...e Erie biologist is monitoring the salinity of the wetlands to see how the salt affects animals and insects. "I am currently doing research in wetlands that th...

Man-made wetland's effectiveness similar to natural marsh

...e. Often called the "kidneys" of the environment, wetlands act as buffer zones between land and waterways. Th...urned into a field again, assuming there are other wetlands nearby to take its place." The story isn't quite the same with nitrates ?a nitrogen-based compound ...

Amazon source of 5-year-old river breath

...assed ?as carbon dioxide from Amazonian rivers and wetlands has spent a mere 5 years sequestered in the trees, other plants and soils of the surrounding landscape, U.S. and Brazilian researchers report in the July 28 issue of Nature. It had been hoped that regions such as the nearly 2.4 million-square-mile A...

Study shows eutrophic lakes may not recover for a millennium

...larger buffers around lakes and streams, restoring wetlands and encouraging the use of new manure storage and handling processes are also steps that can be taken to reduce phosphorus runoff. "Anything we can do to reduce the erosion of phosphorus is going to be beneficial," Carpenter says. ...

Proposal would allow wild animals to roam North America

...vers to create dams that raise water tables, fewer wetlands developed to support willows. Today, there are 60 percent fewer willows in parts of Colorado where beavers have declined. Similarly, after major predators became extinct in Montana and Wyoming, the number of moose, which eat willows, increased in th...

Pulp mill devastates swans' sanctuary in Chile

... Nature Sanctuary covers more than 12,000 acres of wetlands along the Cruces river in the southernmost Chilean province of Valdivia. An officially designated "wetland of international importance" under the Ramsar convention, it was home to more than 100 species of rare, vulnerable or, in at least two cases, e...

There's something fishy about human brain evolution

... food supply. Such an environment was found in the wetlands and river and lake shorelines that dominated east Africa's prehistoric Rift Valley in which early humans evolved. Dr. Cunnane points to the table scrap fossil evidence collected by his symposium co-organizer Dr. Kathy Stewart from the Canadian Museu...

Illegal trade is propelling rare turtle toward extinction, new report

...esembles a snake. The turtle is found only in the wetlands of the island of Roti was first described as a new species in 1994. The report found that poachers are sidestepping regulations and smuggling the turtles to Jakarta where they are then sold illegally and, according to dealers, end up in Japan, Wes...

The critical importance of mangroves to ocean life

...ose finger-like roots are known to protect coastal wetlands against the ocean and as important fish habitats, cover less than 0.1 percent of the global land surface yet account for a tenth of the dissolved organic carbon (DOC) that flows from land to the ocean. Dittmar and his colleagues at several German res...

How healthy is that marsh? Biologists count parasites

...ing non-native plants, the biologists believe that wetlands managers will have a tool for gauging restoration success and its gaps. If, for example, a certain trematode species is missing, it could indicate that its hosts are lacking appropriate habitats. "The trematode information provides a novel way to se...

Even a little cooling helps after cardiac arrest

...ing non-native plants, the biologists believe that wetlands managers will have a tool for gauging restoration success and its gaps. If, for example, a certain trematode species is missing, it could indicate that its hosts are lacking appropriate habitats. "The trematode information provides a novel way to se...

Invasive species alter habitat to their benefit

...ause of environmental changes in northern Michigan wetlands where invasive cattails have taken hold. The cattails, they found, alter the environment in ways that hinder native species but benefit the invaders. Farrer and Goldberg will present their results Aug. 9 at a meeting of the Ecological Society of Amer...

African wetland managers armed with new technology

Earth's wetlands are vital to the water cycle and havens for wildli... to provide detailed wide-area views of individual wetlands to aid national and local conservation efforts. Because the success of wetland conservation ultimat...

Shrinking ponds signal warmer, dryer Alaska

...ered water table negatively affects the ability of wetlands to regulate climate because it enhances the release of carbon dioxide by exposing soil carbon to aerobic decomposition. "Alaska is important in terms of waterfowl production and if you have a lowering of the water table that could have a potential...

Siberian lakes burp 'time-bomb' greenhouse gas

...resent estimate of methane emissions from northern wetlands by between 10 and 63 percent. Walter studied a unique type of permafrost in Siberia, called yedoma, which contains an estimated 500 gigatons of carbon, largely in the form of ancient dead plant material. "This material has been locked up in permafr...

Newts which regrow their hearts

...as Braun in Nauheim. This amphibian comes from the wetlands of North America, but it also feels quite at home in the Institute’s aquaria. It is a small animal that scientists find interesting for a particular reason: whereas humans cannot regenerate damaged heart muscle adequately after a heart attack and t...

Hotspots of mercury contamination identified in eastern North America

...ic characteristics such as the high sensitivity of wetlands and forested areas to mercury inputs. Local sources of mercury are also significant. Although mercury is not directly harmful at ambient levels, it is concentrated up to a millionfold and chemically modified in aquatic food chains, resulting in dange...

Leeches ferry infection among newts

...nfection, since these leeches are most abundant in wetlands with lots of aquatic vegetation. The Penn State researchers say fertilizer-laden wastewater from farms and other sources often causes increased growth of aquatic vegetation in ponds, providing leeches with a firmer footing. "It could lead to mor...

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