HR: 0800h
AN: H31F-0726    [Abstracts]
TI: Biogeochemcial Phosphorus Hotspots: Hydrology, Microbial Ecology, and Soil Chemistry
AU: * Giri, S
EM: skg29@cornell.edu
AF: Cornell University, Biological & Environmental Engineering, Ithaca, MY 14850-5701, United States
AU: Valdivia, M V
EM: mvv2@cornell.edu
AF: Cornell University, Biological & Environmental Engineering, Ithaca, MY 14850-5701, United States
AU: Marjerison, R D
EM: rdm95@cornell.edu
AF: Cornell University, Biological & Environmental Engineering, Ithaca, MY 14850-5701, United States
AU: Archibald, J A
EM: jaa78@cornell.edu
AF: Cornell University, Biological & Environmental Engineering, Ithaca, MY 14850-5701, United States
AU: Richards, B K
EM: bkr2@cornell.edu
AF: Cornell University, Biological & Environmental Engineering, Ithaca, MY 14850-5701, United States
AU: Walter, M
EM: mtw5@cornell.edu
AF: Cornell University, Biological & Environmental Engineering, Ithaca, MY 14850-5701, United States
AB: Eutrophication due to anthropogenic phosphorus (P) sources is a persistent and critical national water quality problem. Although agricultural land is a recognized nonpoint source (NPS) of P, current risk assessment tools and best management practices for addressing P are limited by our incomplete understanding of the processes controlling P mobility. The Cornell Soil and Water Laboratory and Ecohydrology Research Groups are pursuing a campaign of projects focused on improving our understanding of the ecohydrological factors - both natural and anthropogenic - that control P mobility. Specific projects are designed to identify specific roles of microbial ecology, soil chemistry, and landscape position or propensity to soil-saturation on P transport potential. This presentation synthesizes findings across these projects that access our best understanding of ecohydrological controls on P mobility and highlight persistent challenges in unraveling this puzzle as well as implications for land management.
DE: 0402 Agricultural systems
DE: 0414 Biogeochemical cycles, processes, and modeling (0412, 0793, 1615, 4805, 4912)
DE: 0465 Microbiology: ecology, physiology and genomics (4840)
DE: 1813 Eco-hydrology
DE: 1871 Surface water quality
SC: Hydrology [H]
MN: 2007 Fall Meeting