September 25, 2008
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Soil & Groundwater Newsletter September 25, 2008 |
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| This Week´s Featured News Stories |
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Runoff research promotes healthier aquifers
Where rain falls can influence the quality of surface water before it enters underground reservoirs, some of which provide water that eventually comes out of our taps. That`s one conclusion from a collaborative study by the Agricultural Research Service (ARS) and the University of Arizona (UA). The ARS and UA scientists are investigating how urban landscapes influence storm runoff and water pollutants. The focus of their study is the greater Tucson metropolitan region, which has quadrupled in size since the early 1960s. Like many Arizona cities, Tucson is looking into `enhanced stormwater recharge` ... |
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Global warming’s ecosystem double whammy
Plants and soils act like sponges for atmospheric carbon dioxide, but new research finds that one abnormally warm year can suppress the amount of carbon dioxide taken up by some grassland ecosystems for up to two years. The findings, which followed an unprecedented four-year study of sealed, 12-ton containerized grassland plots at DRI is the cover story in the September 18 issue of the journal Nature. `This is the first study to quantitatively track the response in carbon dioxide uptake and loss in entire ecosystems during anomalously warm years,` said lead author Jay Arnone, research professor ... |
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