HR: 0800h
AN: H51D-1167    [Abstracts]
TI: Interactions of Terrestrial and Aquatic Processes Among Lakes of the Northern Highland Lake District, USA
AU: * Cardille, J A
EM: cardille@wisc.edu
AF: University of Wisconsin-Madison, Center for Limnology and Department of Zoology 430 Lincoln Drive, Birge 436, Madison, WI 53706 United States
AU: Hanson, P C
EM: pchanson@wisc.edu
AF: University of Wisconsin-Madison, Center for Limnology, Madison, WI 53706 United States
AU: Vano, J A
EM: jvano@wisc.edu
AF: University of Wisconsin-Madison, Center for Sustainability and the Global Environment (SAGE), Madison, WI 53706 United States
AU: Coe, M T
EM: mtcoe@wisc.edu
AF: University of Wisconsin-Madison, Center for Sustainability and the Global Environment (SAGE), Madison, WI 53706 United States
AU: Cornelius, S P
EM: spcornelius@wisc.edu
AF: University of Wisconsin-Madison, Center for Limnology and Department of Zoology 430 Lincoln Drive, Birge 436, Madison, WI 53706 United States
AB: In the Northern Highland Lake District of Wisconsin and Michigan, USA, thousands of connected terrestrial and aquatic systems interact in a complex, dynamic landscape. To understand the flow and storage of carbon and water across this region, we developed a new simulation model linking groundwater, terrestrial processes, and lake processes in a spatially explicit framework. This model integrates ecological processing (on land and in lakes) with physical hydrology (of the land, lakes, and groundwater pools) to estimate, for each watershed, seasonal water cycle and biogeochemical dynamics. Results indicate that fluxes between lakes and watersheds are an important component of hydrologic and carbon budgets, and the model permits the quantification of these influences across a spatial network of connected watersheds. Our understanding of these systems has been greatly enhanced by multi-decade studies in a small subset of the lake district; we show how the results of modeling these processes can be informed by both hydrologic and biogeochemical data collected at varied times and locations. This explicit incorporation of terrestrial and aquatic processes in surface and subsurface connection networks will aid our understanding of the relative roles of on-land, in-lake, and between-lake processes in this lake-rich region.
UR: http://brahms.zoology.wisc.edu/Currentprojects/Fluxes/fluxeslandwater.htm
DE: 1806 Chemistry of fresh water
DE: 1836 Hydrologic budget (1655)
DE: 1845 Limnology
DE: 1848 Networks
DE: 1860 Runoff and streamflow
SC: Hydrology [H]
MN: 2004 AGU Fall Meeting