HOME >> BIOLOGY >> NEWS
USGS February science picks

olcano each year. Surveillance video and other techniques have shown feral cats to be the most damaging bird predator on Mauna Kea, but non-native rats and mongooses also prey on palila and their eggs. These predation pressures slow recovery of the endangered palila and other native Hawaiian birds. USGS scientists are developing techniques to help managers reduce threats from these invaders.

For more information, visit http://biology.usgs.gov/pierc/PLBankoPage1.htm or http://biology.usgs.gov/pierc/PLJarviPage3.htm or call Paul Banko at 808-967-7396

FEEDS:

How Much Water in an Inch of Snow? As winter storms continue to drop snow on various parts of the country and people contend with shoveling and scrapping away the products of those storms, think about this - if the snowfall amounts were translated into equivalent volumes of water - then how much water would that be? Using a rule of thumb that each 10 inches of snow, if melted, would produce one inch of water, then each inch of snow produces about 2,715 gallons of water per acre. Of course, the actual amount can vary considerably depending on whether the snow is heavy and wet or powdery and dry, so this is based on the "average" water content of snow. Heavy, wet snow has a very high water content and 4 or 5 inches of heavy, wet snow can contain about one inch of water, while it may take 20 inches of dry, powdery snow to equal one inch of water. The 10=1 equation also assumes a "perfect" snowmelt without evaporation or other losses. So how many gallons of water would that be for, say, Chicago? An inch of snow that falls evenly over the 1,358,599 acres of the "urbanized area" (acreage based on 2000 Census Bureau list of urbanized areas) of Chicago, Ill., is equivalent to about 2,955 million gallons of water (or 2.96 billion gallons).

The snowpack that accu

Contact: Butch Kinerney
bkinerney@usgs.gov
703-648-4732
United States Geological Survey
9-Feb-2004

Page: 1 2 3 4 5 6 7 8

Related biology news :

1. Other highlights in the February 18 issue of JNCI
3. Story tips from the Department of Energys Oak Ridge National Laboratory, February 2004
4. Other highlights in the February 4 issue of JNCI
6. Research news from Tufts University, Friedman School of Nutrition Science and Policy: February 2004
7. Story tips from the Department of Energys Oak Ridge National Laboratory February 2003
8. Science picks -- leads, feeds and story seeds (February 2003)
9. NIH and NSF team up to link math and biology at February 12 Symposium
10. Tips from the Journals of the American Society for Microbiology: February 2002
11. February media highlights - GSA Bulletin