93rd ESA Annual Meeting (August 3 -- August 8, 2008)

1:30 PM

COS 34-1

Ecosystem metabolism and nutrient concentrations in the Upper Mississippi River: Contrasts between the main channel and backwaters
Jeffrey N. Houser, USGS Upper Midwest Environmental Sciences Center; Lynn A. Bartsch, USGS Upper Midwest Environmental Sciences Center; John F. Sullivan, Wisconsin Department of Natural Resources; William B. Richardson, USGS Upper Midwest Environmental Sciences Center

1:50 PM

COS 34-2

The regional and global significance of nitrogen removal in lakes and reservoirs
John A. Harrison, Washington State University Vancouver; Roxane Maranger, Université de Montréal; Richard A. Alexander, US Geological Survey; Anne E. Giblin, Marine Biological Laboratory; Pierre-Andre Jacinthe, Indiana University-Purdue University, Indianapolis; Emilio Mayorga, Rutgers University; Sybil Seitzinger, The Royal Swedish Academy of Sciences; Daniel J. Sobota, National Research Council Postdoctoral Fellow; Wil Wollheim, University of New Hampshire

2:10 PM

COS 34-3

Long-term patterns of stream NO₃ and net nitrogen mineralization and nitrification at a nitrogen-saturated hardwood forest site
Frank Gilliam, Marshall University; William T. Peterjohn, West Virginia University; Mary Beth Adams, USDA Forest Service

2:30 PM

COS 34-4

Bacterial carbon processing in Arctic delta lakes: The effect of dissolved organic carbon subsidies from the littoral zone, the surrounding catchment, and adjacent permafrost-affected soils
Suzanne E. Tank, Simon Fraser University; Lance F.W. Lesack, Simon Fraser University

2:50 PM

COS 34-5

An isotope tracer study of nitrogen cycling and foodweb structure in a neotropical stream
Steve A. Thomas, University of Nebraska-Lincoln; Alexander Flecker, Cornell University; Ranjan Muthukrishnan, Univeristy of Minnesota; Michael C. Marshall, University of Georgia; Eugenia Zandona, Drexel University; Catherine M. Pringle, University of Georgia

3:10 PM

COS 34-

Break

3:20 PM

COS 34-6

Seasonal and inter-annual variability in rangeland NEE: Contributions of climatic anomalies and fluctuations in daytime and night-time CO₂ fluxes
H. Wayne Polley, USDA, Agricultural Research Service; William Emmerich, USDA, Agricultural Research Service; James A. Bradford, USDA, Agricultural Research Service; Phillip L. Sims, USDA, Agricultural Research Service; Douglas A. Johnson, USDA-ARS Forage and Range Research Lab; Nicanor Z. Saliendra, U.S. Forest Service; Tony Svejcar, USDA, Agricultural Research Service; Raymond Angell, USDA, Agricultural Research Service; Albert B. Frank, USDA, Agricultural Research Service; Rebecca L. Phillips, USDA, Agricultural Research Service; Keirith Snyder, USDA, Agricultural Research Service; Jack A. Morgan, USDA-ARS

3:40 PM

COS 34-7

Could a shift in canopy dominance from oaks to red maple impact important ecosystem processes like nitrogen and carbon cycling?
Heather D. Alexander, University of Texas at Brownsville; Mary A. Arthur, University of Kentucky

4:00 PM

COS 34-8

Evaluating effects of changes of climate, land-use and land-cover, and atmospheric nitrogen deposition and methane concentrations on global soil methane consumption
Qianlai Zhuang, Purdue University; Kai Xu, Purdue University; Jinyun Tang, Lawrence Berkeley National Laboratory

4:20 PM

COS 34-9

Biogeochemical consequences of bark-beetle infestation in Colorado forests
Dennis Ojima, Colorado State University; Robin H. Kelly, Colorado State University; Thomas H. Riley, Colorado State University

COS 34 - Biogeochemistry of Aquatic Systems and Nutrient Cycling I