Tag: "lake" at biology news
Indiana University, EPA to study airborne PCBs
...revious study by Hites and Basu reported increased lake
PCB levels at Sturgeon Point, N. Y., when winds blew southward from Buffalo, about 12 miles away. A broader study of other locations around the Great Lakes has corroborated this "urban effect" in PCB levels. For example, PCB concentrations at the mos...
Carnegie Mellon scientists reveal ways of studying, resolving PCB contamination in US rivers
...obes will need to be examined in each contaminated lake
or river to understand the fate of PCBs at different sites, said the investigators. (See full release on Eurekalert, "PCB Breakdown in Rivers Depends on Sediment-Specific Bacteria, Find Carnegie Mellon University Scientists.") ENVR 203. Critical oxyg...
PCB breakdown in rivers depends on sediment-specific bacteria, find Carnegie Mellon U. scientists
... microbes need to be examined in each contaminated lake
or river to understand the fate of PCBs at different sites." Co-investigators on the team include Edwin Minkley, director, Center for Biotechnology and Environmental Processes in the Department of Biological Sciences, and Jeanne VanBriesen, assista...
Invaders that did no harm?
...struction, a project creating the largest man-made lake
in existence at the time. The Canal, completed in 1914, rerouted the Chagres River on Panama's Atlantic slope into the Pacific Ocean--connecting watersheds across the continental divide. Since then, fish from the Atlantic and Pacific sides of Panam...
Water on Mars not easy to find, says Texas A&M researcher
...ut so far, we have uncovered no evidence of such a lake
or any other large body of water. We did find fairly recent evidence of lava flows, and it appears many of the rocks on Mars are from volcanic eruptions. We have found non-volcanic rocks with Opportunity and may yet do so with Spirit," Lemmon notes. ...
Revealing bizarre deep-sea secrets
...e to create water so dense that it forms a shallow lake
2,100 feet below the ocean's surface. The expedition's main mission will be to discover new animals and new behaviors at these locations. To do that, the team will focus on observing and understanding the myriad uses of light in the dark reaches of ...
Dispute over life in Antarctic lake
... team of Russian and French scientists claimed the lake
is sterile. But American scientists insist that it...g of samples in the labs. They also argue that the lake
itself is too toxic to sustain life because of its extremely high levels of oxygen. If they are righ...
Lake research offers clues to managing crayfish invasions
...tegy for managing these invaders once they enter a lake
might come from Roth's preliminary data showing th...fish ranged from just five per square meter in one lake
to around 200 in another, the majority of which were newborn crayfish. Roth and his collaborators th...
Study helps satellites measure Great Lakes' water quality
...s type were originally designed for sea water, not lake
water. Theyve got it down pat for the ocean, Merry...as changed much in recent years. For instance, the lake
has experienced a microcystis outbreak every summer since 1995. The warmer the temperature, the bigg...
Study examines future of species extinction, conservation
...in condition, such as the increase of nutrients in lake
water, the species best suited for that condition are left behind. This ordered extinction, notes Ives, makes the community as a whole more resistant to that environmental pressure and, in a sense, protects it from future degradation. "One important ...
Scientists call for less destructive remediation at DOE sites
...en permanently drained, the required excavation of lake
sediments would have cost about $4 billion, as well as contaminated the new disposal location. Instead, DOE considered alternative remediation strategies and refilled the reservoir at a cost of about $12 million, less than 1% of the original plan. ...
Ontario researchers see increase in taste and odour-causing algae problems
...urnal Freshwater Biology examines sediment from 50 lake
bottoms in the Muskoka-Haliburton region of Ontari...nd spines made of glass that are well preserved in lake
sediment. Through an analysis of sediment cores, the researchers were able to reconstruct the histo...
Paleofire database puts fire-scar and charcoal data online
...rds developed from tree rings and from charcoal in lake
sediments are available for free for the first tim...rom tree-ring evidence and from charcoal layers in lake
sediments. The database is on the National Oceanic and Atmospheric Administration (NOAA) Web site h...
Lake restrictions make lakeshore property more valuable
...TTLE - People are willing to pay more to live on a lake
that's protected from degradation, often related t...deling, the collapse of the fish population at one lake
can ripple to nearby lakes - anglers, wanting to hook as many fish as possible, are likely to move t...
Earliest evidence of humans affecting aquatic ecology in Canada, United States
...y glass walls, provide an excellent record of past lake
conditions, explains Dr. Smol. The markers indicat...m leader, calls their study "a good example of how lake
and pond sediment analysis can be used to study the effects of human activities on ecosystems. In th...
If we are what we eat, some lake fish are made of maple leaves
... By tracing the fate of carbon through large-scale lake
manipulations, Pace, Cole, and their colleagues ha...study reveals a surprising degree of dependence of lake
food webs on sources of organic matter transported into the lakes from the surrounding watershed. Th...
Are fish made of maple leaves?
... By tracing the fate of carbon through large-scale lake
manipulations, Pace, Cole, and colleagues have rev...re Dame Research Center), the scientists tested if lake
plant production was sufficient to support resident aquatic life. Similar to baking soda, NaH 13 CO ...
Down that long dusty trail
...as isolated from a cryopeg a small, salty, liquid lake
found under the Siberian permafrost. The bacteria, named psychrobacter cryopegella, can grow at -10 Celsius and can stay alive and even keep metabolizing at an astonishing -20 Celsius. While it isn't able to replicate itself at that extreme temperat...
Little-studied waves in the heart may be cause of defibrillation failure
...thly across the heart, like expanding ripples in a lake
when you toss in a stone. This wave then triggers a smooth and orderly contraction of the muscle," Wikswo, the Gordon A. Cain University Professor and Director of the Vanderbilt Institute for Integrative Biosystems Research and Education, said. "In...
Researchers publish Circumpolar Arctic Vegetation Map
...subzones, floristic provinces, landscapes, percent lake
cover, substrate pH, and plant biomass. Previous maps presented a "disjointed picture of Arctic vegetation, because they were produced using a wide variety of national mapping traditions, legend systems, and map scales," Walker said. The CAVM "is th...
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