Tag: "lakes" at biology news
Water research initiatives at UW-Madison
...ips of vegetated land, flood plains adjoin rivers, lakes
and streams, and remain dry or submerged depending...emoval before rivers flow on to meet other rivers, lakes
and oceans. CONTACT: Emily Stanley, (608) 263 2567, firstname.lastname@example.org 'WATER FOR EVERYON...
Scientists discover how plants disarm the toxic effects of excessive sunlight
...phyll concentrations on land as well as in oceans, lakes
and seas. This image provides a snapshot of photosynthetic capacity and significant sources of singlet oxygen, a toxic byproduct of photosynthesis, in the biosphere. See the image at: http://earthobservatory.nasa.gov/Observatory/Datasets/bios.seawif...
Alaskan puzzles, monitoring provide insight about North Pacific salmon runs
... Still, 20 miles away from the Kvichak are similar lakes
and rivers with record production. "Our research is directed toward understanding why these runs see such different trends, by looking broadly at different systems subject to the same climate factors and constructing ecosystem conditions going back ...
Reservoirs may accelerate the spread of invasive aquatic species, researchers say
...aimed at comparing rates of invasion in freshwater lakes
and reservoirs that are in similar geographic regions, to determine whether the rate in reservoirs is indeed higher, as predicted. ...
Study shows eutrophic lakes may not recover for a millennium
...en just 60 years for humans to put many freshwater lakes
on the eutrophication fast track, a new study show...hreatening. Sooner or later it is going to hit the lakes
and it is going to pose problems." Eutrophication occurs when nutrient-rich soil washes into lakes
Invasive parasite destroying fish species
...part of the biodiversity of freshwater streams and lakes
across Europe, and form an important part of the food chain for other fish, he said. The European sunbleak is now listed as a threatened species among European freshwater fish. "This is another aspect of the concerns about invasive species that you a...
NASA probe could reveal comet life, scientists claim
...s daring again to predict that subsurface ponds or lakes
form transiently due to heat penetrating the exterior crust. We can thus expect biology on comets to have similarities with antarctic biology," added Professor Wickramasinghe....
Researchers explore ecological issues at annual meeting
... known to damage trees and forests yet may benefit lakes
and streams. Cornell postdoctoral associate Andrew...ed 1998 ice storm. "Forest edges along streams and lakes
were significantly more susceptible to ice storm damage, and these waters contained large amounts of...
Freeze-dried mats of microbes awaken in Antarctic streambed, says U. of Colorado study
... intermittent streams that link glaciers to frozen lakes
on the valley floor, she said. The streambeds contain photosynthetic microbes known as cyanobacteria, which collectively occur as thin, rubbery mat-like structures that can spread several meters across the streambed surface. The experiment began in...
Chernobyl: The true scale of the accident
...eter area surrounding the reactor, and some closed lakes
and restricted forests, radiation levels have most...entrations of radiocaesium were found in fish from lakes
as far away as Germany and Scandinavia. Comparable levels of radiostrontium, which concentrates in f...
Emerald Spectre haunts Ontario's ash forests
...he ash trees in a ten kilometre wide swath between lakes
Erie and St. Clair, beyond the eastern boundary of the borer's current range. Regardless, the report notes, "the borers distribution expanded dramatically in 2004" primarily through natural dispersal, but in some cases through human transport. In Ont...
UC faculty members break new ground while treading gently on the Alaskan tundra
...ople are watching climate change with concern. The lakes
are draining; the permafrost is thawing; their coa...pe changes of the North Slope, especially the thaw lakes
of Alaska. Thaw lakes
are shallow lakes
formed by local thaw action. About 20 percent of the land is...
Climate change transforming Alaska's landscape
...pattern." If the warming trend continues, Alaska's lakes
and wetlands will continue to disappear, creating a dryer landscape in the long term. Klein says that Alaska's transformation is another piece of evidence in the climate change puzzle. "The bottom line is that a change is happening," he says. "There...
It's a bug's life: MIT team tells moving tale
... tiny creatures that live on the surface of ponds, lakes
and other standing bodies of water. There, "all the rules change," said David Hu, a graduate student in the Department of Mathematics and first author of a paper on the work to appear in the Sept. 29 issue of Nature. For the last four years, Hu and ...
Multiple genes permit closely related fish species to mix and match their color vision
...ndreds of new cichlid species have arisen in these lakes
in the last 100,000 years. Thanks to the relatively recent colonization by these fish of different ecological niches, as well as the prominent role of nuptual coloring in the mating preferences of these species, the cichlids offer a unique opportunit...
Sudden change in social status triggers genetic response in male fish, study finds
... that inhabit Lake Tanganyika and other freshwater lakes
in East Africa. Like all cichlids, A. burtoni lives in a hierarchical social system where showy dominant males defend small territories that are used for courtship and breeding. However, dominance among male cichlids is reversible: If a subordinate s...
Entire lakes feel effects of climate warming, University of Alberta study shows
...roducing major ecological changes in remote arctic lakes
at an alarming rate, according to new University o... the U of A's Faculty of Science. "We study these lakes
as models of global change," said Michelutti. "If you think of these lakes
as sentinels of change th...
Dust storms may carry bacteria to Japan from China
...ds or dust storms, and possibly originated in salt lakes
in Inner Mongolia in China. This study adds to the evidence that dust storms in Asia can have implications in geographically remote countries. Previous studies have shown that dust storms in Northern China and Mongolia can cause myriad problems else...
UCR environmental scientists propose chemical solution to cleaning California's Salton Sea
...f salt that has been used to treat phosphorus-rich lakes
for decades. They also cleaned water from the rivers flowing into the Salton Sea with polyacrylamide, a new type of polymer used increasingly for reducing sediment loss from agricultural fields. Results from the study appear in the November/December ...
Wild birds help to create human flu vaccine
...irds from the Gobi Desert to the northern mountain lakes
of the country and collected samples from hundreds of wild birds, both live and dead including, ruddy shelduck, herring gull, black-headed gull, bar-headed goose, and whooper swans, all species that have been affected by the disease. "The collabor...
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