Tag: "vegetation" at biology news
Native Gray Ants Play Positive Role In Valley Peach Orchards
...bers," Daane said. Cover crops or resident vegetation
can provide alternative food sources,such as other prey, seeds or nectar. But native gray ant populations were foundin all kinds of ecosystems, including clean cultivation. Daane said covercropping or disking may still benefit native gray ants by r...
Colorado State University Study Reveals Climate Change, Longer Growing Seasons Could Harm Grazing On Western Shortgrass Steppe
... a lengthened growing season andchanges in prairie vegetation
on the shortgrass steppe of eastern Colorado andsurrounding states. Working at Colorado State's Shortgrass Steppe Long-Term EcologicalResearch (LTER) station, the ecologists drew on 23 years of climate andvegetation data that suggest a warmin...
Global Climate Change Model Predicts Changes In U.S. Ecosystems
...ice, has developed a computer model that simulates vegetation
type in any area of the world and can determine th...system (MAPSS) isone of six in the high-visibility vegetation
ecosystem modeling analysis project (VEMAP) and is affecting national policy considerations on globa...
UF Researcher: New Techniques Help Reconstruct Ancient Diets
...are incorporated intoleaves, fruits and other soft vegetation
is different from the way they become apart of grass, with the different carbon makeup showing up in the teeth. The study, supported by the National Science Foundation, also involvedthe microscopic analysis of scratches and pits on the teeth ...
New Edition Of Ecological Monographs Is Now Available
... Dakota, and Minnesota and included nine different vegetation
types in bothareas. This pattern was said to have been based on a complexity of issues,including plant cover, soil nitrogen availability, and total number of exoticspecies. Patterns of invasion, more importantly, depend on scale, ecosystem,vegetation...
Mojave Desert Is Subject Of Las Vegas Science Meeting
...eep and burros, special-status plants, Mojave vegetation
map project, military research, urban effects and pollution, livestock grazing, subsidized predators, desert fishes, riparian systems, exotic plants, fire history, effects of fire, ecosystem processes, restoration and recovery and agen...
LSU Ag Center Brucellosis Specialist May Help Stem Bison Controversy
... fetuses orplacentas or with contaminated soil and vegetation
left behind by infectedanimals. The bacteria have been shown to exist up to 21 days in abortion sitesin Yellowstone Park." Even though they're also known to be infected with brucellosis, elkaren't considered as significant a threat to cattle...
Scientists Use Fossilized Emu Eggshells To Discern Changes In Vegetation, Provide Additional Evidence Of Human Impact On Australian Landscape
...nto Australia dramatically changed the continent's vegetation
withthe use of fire. However, few vegetation
records from the vast Australianinterior exist, and none extend beyond the last 18,000 years. The t...
Fossilized Emu Eggshells Give Clues To 65,000 Years Of Vegetation And Climate Changes In Australia
...a marker to reveal aspects of the past climate and vegetation
of Australia. Scientists Beverly J. Johnson and Marilyn L. Fogel of the Geophysical Laboratory of the Carnegie Institution of Washington, G. H. Miller of the University of Colorado and others* report their findings in the May 14, 1999, issue of Scie...
Report: High Carbon Dioxide Boosts Duke Forest Growth By 25 Percent
...s or less. "The crux of the matter is that vegetation
can respond to higher CO2 andact as a carbon sink,...se is probably an upper limit for what the world's vegetation
can do.Nevertheless, it's interestingly high." With technology pioneered by the Brookhaven N...
USGS study casts doubt on role of fire suppression in causing catastrophic shrubland wildfires
...d,which means, said Keeley, that attempts to alter vegetation
age structure acrosslarge landscapes in the hope of managing these wind-driven fires is unlikely tostop catastrophic fires....
Butterflies thrive in restored roadside prairies
... Iowa alonehas more than 600,000 acres of roadside vegetation
and there are millions morenationwide. "Wildlife benefits are not the primary goal of roadside vegetation
but they could be," says Ries. "We need to explore this more, forexample we don't include butterfly ...
Sahara's abrupt desertification started by changes in Earth's orbit, accelerated by atmospheric and vegetation feedbacks
...and strongly amplified byresulting atmospheric and vegetation
feedbacks in the subtropics. The timing ofthis tra...whereas theevolution of North Africa's climate and vegetation
were abrupt. Claussen and hiscolleagues believe that various feedback mechanisms within Earth's clim...
Congress briefs: International congress on ecosystem health
... County, willdiscuss how to establish hedgerows of vegetation
on farms to serve as habitatsfor insects. They will report results from a 1996 study of four types of theseinsectary hedgerows planted on a large-scale rotational field-crop farm in YoloCounty. The study resulted in the first model guidelines for i...
Purdue helps Indiana companies with pollution dilemma
...tant that isunhealthy to breathe and that may harm vegetation
and wildlife. It should not be confused with naturally occurring atmospheric ozone,contained in the stratosphere, which acts as a filter for harmful ultravioletradiation....
Forest fires a burning issue
...s. It will notbecome evident until next summer how vegetation
and insect life have reacted tothe fire. SwedishEPA hopes that some of the more than 30 red-listed insects, e.g. sooty blackflatheaded borer, thecarabid beetle Agonum quadripunctatum, and the longhorn beetle Acmaeopsseptentrionis will beattracted to ...
Early detection of Global Change 'symptoms' on the protected areas to be discussed in Italy
...e Impact on Biosphere and Hydrology Impact on vegetation
Impact on hydrology and water resources Impact on mountains and specialized habitats Invasive alien organisms Socio-economic implications Options for human intervention Protected areas and their role on biodiversity Networking of national p...
USGS studies wildfire ecology in the western United States
... Here, as in much of the Great Basin, the dominant vegetation
-- sagebrush and other shrubs adapted to the harsh...rn extensively and often, and much of the dominant vegetation
in these systems is highly adapted to a fire-prone environment. Many plants have seeds that require ...
As Hurricane Floyd moves up the Atlantic Coast . . . .
...ng USGS studies on the effects of deer browsing on vegetation
in the floodplain of the Patuxent River in Maryland may have been obscured by the damagingeffects of Hurricane Floyd. USGS biologists will evaluate the impacts of Hurricanes Floyd and Dennis onsediment deposition in the Virginia coastal marsh study ...
Common grass infected by fungus makes life difficult for other species
...plots in summer 1994, each ofwhich had avariety of vegetation
at the start. Alternating plots were then planted withinfected oruninfected fescue seed. After two months, there were stands of fescue in eachplot along withmany other species. No other treatments were used, such as fertilizer,pesticides or mowing. A...
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