Tag: "impacts" at biology news
Invasive fishes pose increasing threat to U.S. waters and native fishes, says USGS
... a wealth of current information on the status and impacts
ofnon-native fish in America's waterways. For example, the authors write, non-native fish species are causing declines inthe abundance and genetic integrity of native fish species -- including highlyvalued game and fisheries species -- and are proba...
USGS study casts doubt on role of fire suppression in causing catastrophic shrubland wildfires
...that fire suppression plays a role in limiting the impacts
ofshrubland wildfires. In the last 50 years, human... warned that even with such management, ecological impacts
may beenormous because of the already-extensive size of the still-growingurban-wildland buffer zones...
USGS will re-evaluate its Alaska strategy
...at are relatively or completely free of the direct impacts
of humanactivities as does Alaska; opportunities that are essentially gone in the lower48 states." While visiting Alaska, Groat met with USGS program staff, federal agencycooperators, state agency personnel, university administrators and pr...
Many contaminants found in nation's streams, but few drinking-water standards exceeded, USGS report shows
...ater samples does not automatically translate into impacts
on human or aquatic health. (The level of accuracy demanded by the USGS to assess the effects on water quality is a minute amount -- sometimes parts per trillion -- that is well below the threshold used for setting standards and guidelines.) ...
NCAR scientists seek clues to wildfires during Alaska prescribed burn
...eased understanding of firebehavior; and long-term impacts
on wildlife, soil erosion, and otherecosystem components. Conditions for igniting the burn The Frostfire burn plan puts public health and safety foremost (see www.fsl.orst.edu/fera/burnplan.html ). Each day the Alaska FireService will make the "go/...
Congress briefs: International congress on ecosystem health
...t of Transportation will discuss the environmental impacts
of buildingand maintaining the nation's highway co...hift in theirranges, which would likely have major impacts
on forest health. For example,the loss of insect-eating birds that feed on spruce budworms could ma...
New electrical transformers will improve power quality
...s and cause power outages. "Your neighbor directly impacts
your power quality," Sudhoff says. Solid-state transformers would eliminate all such power-quality problems. They also would reduce the amount of current actually required to supply devices such as electric machinery, cutting down on losses associate...
Plants, pathogens engage in trench warfare
...nce theseverity of epidemics both depends upon and impacts
the frequency of susceptibleindividuals. We found features of our polymorphism data that support the longterm cycling predicted by our trench warfare model" explains Bergelson. This study provides indirect support for a long-standing belief that org...
Ship sulfur emissions found to strongly impact worldwide ocean and coastal pollution
...elis responsible for the significant environmental impacts
of ship sulfuremissions. Regionally, sulfur emissions contribute to acid rain, which canpollute freshwater lakes and rivers, and damage vegetation. "Ships also have been known to contribute to the formation of cloudsover the ocean," Pandis sa...
Media Advisory: The Geological Society of America 1999 Annual Meeting
...ty rights conflicts;disproportionate environmental impacts
on minorities and the poor; and the needfor collab... p.m. Natural coastal geologic processes and their impacts
will be the starting pointfor this session; effects of El Nino, hurricanes, and other storms are amo...
Pfiesteria Event: Sea Grant and DNR officials report on attitudes and activities
...public concerns remain high and potential economic impacts
remaingreat. Falk will detail his survey results, including state-by-statedifferences, at this briefing. While Pfiesteria has not made a major appearance the past two summers,scientists continue to monitor coastal waters and seek to define issues ...
USGS fire research in the southeast
...n efforts have been one of the mostpervasive human impacts
on the natural ecosystems of this region, and, acc...pidly assess and study the ecological and economic impacts
of the Floridawildfires. Over the past year Grace's work has focused on how native and exotic p...
As Hurricane Floyd moves up the Atlantic Coast . . . .
...urricane Floyd. USGS biologists will evaluate the impacts
of Hurricanes Floyd and Dennis onsediment deposition in the Virginia coastal marsh study areas established thisspring. Landslides Although Floyd has remained near the coast, past hurricanes that traveled inlandto the Appalachian Mountains brought l...
Impacts of Pfiesteria: Outbreaks could substantially reduce tourism revenues, UD Sea Grant researcher says
...1 percent were unsure. Pfiesteria's human health impacts
are not yet fully understood. Reportsby people fishing, researchers and those riding through fish kills on boats havelinked exposure with skin lesions, short-term memory problems, headaches andother symptoms. Consequently, Falk says, it's best to lea...
Colorado State University organizes national conference to study carrying capacity of national parks and recreation areas
... quality of theiroutdoor experience; the economic impacts
on local communities and business owners; and the role American political and judicial systems need to play in formulatingpolicy. More information is available from<a href="http://www.cnr.colostate.edu/NRRT/capacity/"> http://www....
Spacecraft provides first direct evidence: Smoke in the atmosphere inhibits rainfall
...re smoke concentration was found to havecomparable impacts
on clouds." This research further validates earlie...o the difficult problemof understanding humanity's impacts
on global precipitation," said Dr. ChristianKummerow, TRMM project scientist at NASA's Goddard Space...
Scientists look for signs of pollution in the superhighway in the sky
...on. For now, Thompson contends that ozone impacts
along the AtlanticCorridor are too small to detect, but according to industry specialists, whoindicate that the future holds a steady increase in air traffic, makesunderstanding the effects of air travel on the global climate increasinglyimportant....
When the shaking stopped, the work began - for USGS scientists
...fford new avenues for limiting losses and reducing impacts
offuture shocks. A fact sheet produced by the USGS to mark the 10th anniversary of the LomaPrieta earthquake highlights the scientific efforts and progress that willhelp reduce earthquake losses. The fact sheet describes how USGS scientistsand person...
New books view storms, the stratosphere, and more
... author defines El Nino,describes its far-reaching impacts
on climate and society, and discusseshow those impacts
might be forecast. The book considers the state ofprediction research and the value of forecasts in ...
Meet Conan the Bacterium
...resumed sharing of debris generated from meteorite impacts
amongst the early planets, origins of D. radiodurans might even be accidentally common between Mars and Earth. "By nature, it is selected to survive radiation damage very well," D. radiodurans can withstand without loss of viability a dosage that is ...
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