Tag: "lakes" at biology news
Indiana University, EPA to study airborne PCBs
...OOMINGTON, Ind. -- The elevated PCB levels in U.S. lakes
and rivers that led to hundreds of U.S. Environmen...l five of the Great Lakes, and for many rivers and lakes
in or near the Great Lakes Basin. Advisories do not necessarily prohibit fish consumption, but they ...
Carnegie Mellon scientists reveal ways of studying, resolving PCB contamination in US rivers
... production and use were banned, sediments of many lakes
and waterways continue to provide a source of these deadly toxins to the water and ultimately to fish and people. Now, in a series of integrated studies, a multidisciplinary team of biologists and engineers from Carnegie Mellon University has disco...
Water on Mars not easy to find, says Texas A&M researcher
...ieved were once there mainly in the form of large lakes
and perhaps even small seas. Only the results of the Spirit rover are detailed in the articles, with information about Opportunity to be published in a future issue. Although the rovers uncovered the presence of small amounts of water in rock sample...
Dispute over life in Antarctic lake
... around 10 times as much oxygen as other under-ice lakes
in a region of Antarctica called the Dry Valleys, which are full of life. "Free radicals are caused by radiation and ultraviolet light, and neither exists down there," he says. Besides, microbes can protect themselves against the hyper-oxygenation b...
Climate change could doom Alaska's tundra
...g waterfowl. In summer it can feature thousands of lakes
and large marshy areas. According to Bachelet, despite some of the criticisms aimed at them, climate models appear to work better and achieve higher accuracy over longer rather than shorter periods of time. "If you ask these models to pre...
Droughts like 1930s Dust Bowl may have been unexceptional in prehistoric times, new study suggests
.... We'd see the erosion start. The chemistry of the lakes
would change. We would see these dust-bowl effects. "And then, within several decades to a century later, the grasses would come back, fires would start back up and erosion would stop." To make these deductions, Duke post-doctoral investigator Kendri...
Lake research offers clues to managing crayfish invasions
...e species now crawling across the rocky bottoms of lakes
and streams throughout the United States and Canad...g up to five inches long - have slowly infiltrated lakes
far and wide, including those in New Mexico and Ontario. Once used for bait, rusty crayfish now are ...
Plant gene discovery could enhance plant growth, reduce fertilizer needs and phosphate pollution
...sphorus is a nutrient wherever it goes, and in our lakes
and rivers it often nourishes undesirable algae. Agriculture is a major source of phosphate pollution, so anything we biologists can do to improve phosphate uptake in crop plants will make agriculture more sustainable and less harmful to the environ...
Study helps satellites measure Great Lakes' water quality
...change. As algae flourishes in the five freshwater lakes
every summer, satellite images show the water chan...ped by NASA and other agencies over the years. But lakes
are shallower and have different water conditions that affect the wavelengths of light collected by ...
Dramatic decline of California native frog linked to introduced trout in mountain lakes
...h and Game to remove trout from some high-altitude lakes
in California's Sierra Nevada to save the disappea...nia.) Non-native trout dumped into the high-Sierra lakes
have been suggested as one cause of the decline, but many biologists dismissed this as improbable, s...
The great flamingo round-up
... dry weather, blistering sunshine and caustic salt lakes
dotting the landscape. For flamingoes however, the lakes
are rich in microscopic food, while the surrounding wetlands make a perfect breeding ground. "Most ...
Elusive but ubiquitous microbe fingered as gum disease culprit in Stanford study
...ny extreme environments - from hot springs to salt lakes
to submarine volcanoes - but also within animals, including the human colon, vagina and mouth. "To me it is one of those fundamental puzzles: they are everywhere and, given that we must be exposed to them somewhat frequently, if not all the time, why...
Evolution's mirror in a fish's spines
...idly colonized newly formed freshwater streams and lakes
through a process known as adaptive radiation. The many stickleback populations underwent disparate and parallel evolutionary changes, among them partial or complete loss of their pelvic spines. These spines are thought to protect the fish from bein...
Nanotechnology highlights from the ACS national meeting in Anaheim, Calif., March 28-April 1
... to remove environmental pollutants from ponds and lakes
as well as industrial wastewater. ( IEC 96 , Tuesday, March 30, 11:15 a.m., Anaheim Marriott, Orange County 1, during the symposium, "Nanotechnology and the Environment.") Biological nanosensors may lead to improved diagnostics, noninvasive imaging ...
Lakes with zebra mussels have higher levels of toxins, MSU research finds
EAST LANSING, Mich. Inland lakes
in Michigan that have been invaded by zebra mussel...Fisheries and Wildlife, and colleagues report that lakes
that are home to zebra mussels have, on average, three times higher levels of a species of blue-gree...
Ontario researchers see increase in taste and odour-causing algae problems
(Kingston, ON) Ninety per cent of the lakes
surveyed in a new study of Ontario's "cottage coun...ottagers to local officials is that water in their lakes
periodically tastes or smells bad. A common cause of such problems is blooms of small algae (microsc...
Lake restrictions make lakeshore property more valuable
... 15 percent, anglers on nearly any of the region's lakes
could dip their lines into the water and quickly c...ce has declined, threatening many qualities of the lakes
that attract people to the area. Development tends to have a homogenizing effect across an area, gi...
If we are what we eat, some lake fish are made of maple leaves
... on sources of organic matter transported into the lakes
from the surrounding watershed. These findings rei...mall animals that live in the water column) in the lakes
are derived from terrestrial sources, which confirms that terrestrial carbon fuels aquatic productio...
Are fish made of maple leaves?
...mall animals that live in the water column) in the lakes
are derived from terrestrial sources, confirm that...y the production of plants on the land surrounding lakes
and ponds. The leaves and organic matter that enter lakes
are ultimately incorporated into aquatic a...
Sediment samples suggest how plants would fare in hotter, drier future
...The middle Holocene C3 and C4 estimates of the two lakes
were based on an analysis of carbon isotopes in charcoal particles produced by fires and well preserved in the stratified layers of sediment. Because of the presence of aragonite, a carbonate mineral, at West Olaf Lake, climate data were extracted by...
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