Tag: "drought" at biology news
Transgenic Rice Plants Resist Insects, Drought And Salt Damage
...f the most destructive insects as well as salt and drought
damage. Technology for the transgenic rice plants,...eed this rice now, and the crop losses to insects, drought
and increasing salinization of soils are devastating." According to Gary Toenniessen, deputy directo...
Changing Continental Runoff Patterns Could Change Ocean Circulation
...n of major waterways may cause more problems than drought
downstream, according to a Penn State geologist who is studying circulation models of the ancient oceans. "We have already seen some of the consequences of changing surface waterways," says Karen L. Bice, graduate student in geosciences. "The ...
New Evidence For Corn's Ancestry Could Lead To Insect And Drought Resistant Crops
...ds with extremelytoxic chemicals." Tripsacum is drought
resistant too, and Eubanks plans to testher experimental hybrid for that trait as well. Moreover, her Tripsacum -teosinte hybrids are perennials, and couldconceivably be exploited to produce a perennial variety of corn, she added.All of today's com...
More To Drought Than Meets The Eye
...ook by its cover, you probablycan't judge a tree's drought
tolerance by its leaf response, according to PennS...ltural Sciences. Conventional measures of drought
tolerance in trees include adaptationsdeemed necessary to conserve or withstand an absence of water,...
Natural Variability Is Key To River Restoration
...69-784). Letting a river do its own thing -- come drought
or high water -- is more complicated than anyone realized until recently, the panel agrees, but at least scientists now know why natural flow is important and how to help. "People say you can never return the Ohio River to its natural state, and yo...
Gene Transfer Process Generates Seedless Summer Days
...its. However, factors such astemperature, insects, drought
and unfavorable weather can affectpollination and reduce the productivity of those fruits. Using the gene transfer process, Li is able to bypass MotherNature by inserting a fusion gene into a fruit plant. This insertionwill subsequently lead to the ...
Clean Air Act Reduces Acid Rain In Eastern U.S.
... Canada's southeastern provinces. A severe drought
in some portions of the Southeast apparently causedhigher sulfate and nitrate concentrations during 1995 and 1996. With lessprecipitation, concentrations increase, but do not necessarily suggest anincrease in total sulfate or nitrate deposition. Lync...
Fall Meeting: Updated Press Conference Schedule
...effect of soil moisture conditions on the extended drought
in the southern U.S. earlier this year, and climatic changes throughout Africa resulting from increasing desertification of the Sahel region. Presenter: Dr. Roger Pielke, National Center for Atmospheric Research, Boulder, Colo. Panelists: Roni Avis...
Colorado State University Study Reveals Climate Change, Longer Growing Seasons Could Harm Grazing On Western Shortgrass Steppe
...said. "Blue grama is a grass that is very drought
resistant and grazingtolerant, and under normal co...use of its ability to survive both long periods of drought
and constantgrazing, formerly by bison and now by livestock. If cool-season plants supplantblue gram...
Global Climate Change Model Predicts Changes In U.S. Ecosystems
...r large parts of the country because of widespread drought
conditions. This could occur in the Great Lakes ar...mple, if forests over large areas begin to undergo drought
stress, it might be prudent to 'trim the wick' or use some form of density control to save trees and...
Jet Stream Studied In West African Drought
...ng thesummer months may contribute to the extended drought
that has plagued thisalready semi-arid area, accor... and MineralSciences. The area affected by drought
since the 1970s is the Sahel, a savannaharea lying just south of the Sahara Desert. Countries in the...
Stakeholders improve global change assessment
...est managers in that they saw electrical stormsand drought
as important, but they also viewed high winds a major problem as didforest managers. "Large water systems had more weather-related problems than small ones,possibly because the large systems are more complex," says Anderson. "Initiallywe tho...
Drought worsens, spreads
...moves upstreaminto normally freshwater areas. "The drought
is worsening and is beginning to spread," said USG...private wells and small communities are feelingthe drought
most severely. Major metropolitan areas, because of good planning in thewake of earlier droughts, ge...
Drought brings environmental, ecological changes
...n Dover and salty water nears Poughkeepsie The drought
of 1999 is causing more than frustration for farme.... Poughkeepsie faced a similar problem during the drought
of 1995 when the salt front threatened the area's water supply system. Then, the USGS worked with th...
USGS fire research in the southeast
...attern changed abruptly with the onset of a severe drought
in the springof 1998. Areas that were too wet for ...ng-caused fires usually occur in May andJune under drought
conditions; controlled burning is too dangerous anundertaking at these times. The fact is that in So...
USGS studies wildfire ecology in the western United States
...climatic variability in the Southwest. A prolonged drought
during the 1950s contributed to outbreaks of large...pe," he says. "The next time we have a significant drought
of any sort, we can expect some very severe fire behavior. It's the scale and associated ecological ...
As Hurricane Floyd moves up the Atlantic Coast . . . .
...th and South Carolinacontinue to experience severe drought
conditions. Flooding in Maryland and Delaware was occurring in the Patuxent Riverwatershed and on most of the Delmarva Peninsula. Meherrin, Nottoway, and Blackwater Rivers in southeastern Virginia wereabove flood stage. In New Jersey, ...
Study indicates Indian Ocean monsoon similar to El Niño phenomenon in Pacific
...ionwill have warning weeks or months in advance of drought
or floods," he said. "It is the variability on these time scales that really impact agriculture andsociety, and the annual Indian monsoon is a major player in these climatefluctuations."...
Common grass infected by fungus makes life difficult for other species
...aid. "Inaddition, infection by the fungus enhances drought
tolerance of fescue, andthere are oftenextended periods without rain during summers in southern Indiana. Finally,infected plantsare more productive than uninfected plants in the absence of stress. Any or allof these factorsmay promote the dominance o...
Effect of Hurricane Floyd on current water resources in Maine
...icane Floyd and other rain in September have ended drought
conditions in Maine, in terms of water resources. Streamflow and ground-water levels across the state are above normal or normal. Drought conditions had stretched from the mid-Atlantic states through New England and into Maine in early September. The...
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