Tag: "wetlands" at biology news
Selenium: an insidious and persistent toxin
...from coal-fired plants, and the use of constructed wetlands
to treat wastewater. More information about the effects of selenium on the aquatic environment, as well as methods to evaluate and control it, can be found in Lemly's new book, "Selenium Assessment in Aquatic Ecosystems: A Guide for Hazard Evaluatio...
'Buried dams' help clean recycled water
...ronment, and the importance to natural streams and wetlands
of maintaining adequate subsurface water supplies. Dr Toze has tested the antiviral activity of indigenous microbes in groundwater taken from South Australia, the Northern Territory, Victoria, Queensland and Western Australia. In every case the large...
URI Graduate School of Oceanography scientists examine the success of restored salt marshes
...arsh. "Results from this study show that restored wetlands
can respond quickly to tidal restoration," said Ja...ence from diet composition indicates that restored wetlands
are able to provide food resources for fish, suggesting that the community structure of salt marshes...
NSF grant to grow methane-producing microbes in lab
...s of years, but practically nothing is known about wetlands
bacteria that turn organic matter into the greenho...obic (without oxygen) conditions of bogs and other wetlands
-- aiming to bring 'em back alive. "Alive is the hard part. We can collect and distinguish the vari...
Scientists use llama droppings to help combat water pollution
... 'low-tech' bioreactors constructed in the form of wetlands
with a substrata of compost and limestone, is called bacterial sulphate reduction. Bacteria living in the compost and limestone use dissolved sulphate, found in abundance in mine water, as an energy source, producing sulphide. The sulphide then react...
URI researcher receives park service grant to identify environmental threats to wetlands in the northeast park system
...nization, the ecological structure and function of wetlands
can be altered, sometimes quite dramatically. URI...ional Park Service to identify threats to specific wetlands
in the eight Northeast Coastal and Barrier Network Parks and two parks on the immediate coast. This ...
The curse of the carp
... particularly troublesome in the shallow waters of wetlands
that border the river. The Murray's flow was always episodic, and these wetlands
periodically flooded and drained; a natural cycle that prompted native trees to germinate and native...
Impact of genetically engineered fish subject of U of Minnesota study
...and, but some have escaped into natural rivers and wetlands
and established feral populations. The project will measure the likelihood that genetic material will flow from the introduced genetically modified tilapia to the existing feral populations of the fish. The impact of the introduction on other fish p...
Restoring wetlands much more than 'just add water'
... of Minnesota. In what may be the largest study of wetlands
restored in agricultural landscapes, Susan Galatow...chieve no net loss of both quality and quantity of wetlands
will require a bigger commitment to seeing these things through than was previously assumed," said G...
Climate change in the USA
...de. Additionally, about half of the pre-colonial wetlands
in the lower 48 states have been converted to other uses, with the majority of losses occurring in the South. Burkett will discuss how growing season length, photosynthesis, and evaporation rates will most likely affect the potential range of many w...
Scientistis say 'business-as-usual' is not an option with global change
...ly altered; 50% of mangroves have been removed and wetlands
have shrunk by one-half; More nitrogen is now fixed synthetically and applied as fertilizers in agriculture than is fixed naturally in all terrestrial ecosystems. The concentrations of several climatically important greenhouse gases such as carbon ...
LSU Professor Emeritus wins 2001 National Wetlands Award
...ion of the nation's wetlands. He is one of eight wetlands
educators, activists, scientists and conservationi...t receive this award. Preservation of our coastal wetlands
is essential for the 2 million residents who live along Louisiana's coast and for the abundant aquat...
Wetland loss still outweighs gain despite 20 years of progress
... have not stopped the loss of wetlands
in America, according to a report released by the ... creating or restoring more than one acre of wetlands
for every acre of wetland filled. Efforts to restore wet...
Nile crocodiles threatened by alien weed
...eters and eat everything from fish to antelopes in wetlands
across sub-Saharan Africa as they have for millennia. But recent findings in South Africa by Earthwatch Institute-supported researchers suggest that these ancient reptiles may have met their match. Nile crocodiles could face local extinction due to a...
Muddy waters: letting the Gulf of Mexico breathe again
...least 5 to 13 million acres of wetlands
in the Midwest and the lower M...s lost about 80 percent of its wetlands
in the last two centuries, compared to a 50 percent loss in the contiguous Unite...
Unusual source of ocean water contamination may rewrite environmental textbooks
...tradict accepted environmental science theory that wetlands
should purify contaminants flowing into the ocean,... and data from virtually all previous studies said wetlands
should filter pollutants. Those studies were based on freshwater wetlands, however, which may functi...
Saline solution a serious threat to wetlands
...to the RAMSAR convention, and one of our important wetlands
lies around the mouth of the Murray River. For years, Dr David Paton of the Department of Environmental Biology has been studying the estuarine waters of the River, Lakes, Murray Mouth and Coorong. "A line of sandhills called Younghusband Peninsula r...
Geologists explore beach nourishment controversies, groundwater quality, and Blue Ridge mountain issues
...ial impacts of near-surface aquifer development on wetlands
preservation, nitrate concentration, and the state's goal of reducing nitrogen loading by 30 percent. It suggests that North Carolina may benefit from a more holistic approach to managing its coastal aquifer systems and interconnected stream network....
A seafood paradox: Will fish farming save or deplete our ocean fisheries?
...e Fund will explain how shrimp farms often replace wetlands
and mangroves that serve as nurseries for native fish populations. Nils Kautsky from the University of Stockholm in Sweden will show how a farm can affect surrounding areas by discarding excess fishmeal, transferring parasites to wild populations ...
Discovery may jump-start mine remediation efforts
...for acid-mine drainage treatment using constructed wetlands
which are rich in organic matter. Maybe our work can be used to refine development of these strategies." The worldwide problem of contamination around mining sites is significant. Acid mine drainage, for example, is a threat to surface and ground wat...
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