B54B:
Biogeochemical Hotspots across Terrestrial-Aquatic Ecotones II


Session ID#: 8559

Session Description:
The interface between terrestrial, freshwater, and marine ecosystems are dynamic zones of biogeochemical cycling, and often represent hotspots of biogeochemical activity and productivity.  This session will highlight studies of biogeochemical cycling across terrestrial-freshwater-marine linkages, from the hyporheic zone to the coastal margin.  We welcome presentations that focus on the integration of nutrient and energy cycling across components of the terrestrial-freshwater-marine continuum. We seek modeling and field-based presentations that quantify biogeochemical concentrations (e.g. C, N, P) and fluxes, measure DOM quality, and describe microbial community dynamics over various time scales.  We also welcome studies tracking the incorporation of terrestrial C and nutrient subsidies into freshwater and marine food webs, integrative presentations that provide models for cross-disciplinary studies, and overviews of novel science applications in this realm.
Primary Convener:  Allison A Oliver, University of Alberta, Biological Sciences, Edmonton, AB, Canada
Conveners:  Nicholas Bouskill, Lawrence Berkeley National Laboratory, Ecology, Berkeley, CA, United States, Carl I Steefel, Lawrence Berkeley National Laboratory, Berkeley, United States and Dave D'Amore, USDA Forest Service, Juneau, AK, United States
Chairs:  Allison A Oliver, University of Alberta, Biological Sciences, Edmonton, AB, Canada, Nicholas Bouskill, Lawrence Berkeley National Laboratory, Ecology, Berkeley, CA, United States, Carl I Steefel, Lawrence Berkeley National Laboratory, Berkeley, United States and Dave D'Amore, USDA Forest Service, Juneau, AK, United States
OSPA Liaison:  Dave D'Amore, USDA Forest Service, Juneau, AK, United States

Cross-Listed:
  • H - Hydrology
  • OS - Ocean Sciences
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0442 Estuarine and nearshore processes [BIOGEOSCIENCES]
0495 Water/energy interactions [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

Changes in the Coupling of C, N and P Cycles During River Transport from Source to Sea. (78956)
Bernard Jackson Cosby Jr1, Paul Withers2, Joshua Thompson3, Chris Evans1, Ophelie Fovet4, Michael Bowes5, Emma Gozzard6, Benoît O L Demars7 and Marc Stutter7, (1)Centre for Ecology and Hydrology, Bangor, United Kingdom, (2)Bangor University, Bangor, United Kingdom, (3)Massachusetts Institute of Technology, Cambridge, MA, United States, (4)INRA Rennes, UMR1069, Rennes Cedex, France, (5)UK Centre for Ecology and Hydrology, Wallingford, United Kingdom, (6)Centre for Ecology and Hydrology, Wallingford, United Kingdom, (7)The James Hutton Institute, Aberdeen, United Kingdom
Turbid Bottom Waters and Ammonium-Rich Freshwaters as Nitrification Hotspots in a Large Urban Estuary (San Francisco Bay, CA) (78632)
Julian Damashek1, Karen L Casciotti2 and Christopher Francis1, (1)Stanford University, Earth System Science, Stanford, CA, United States, (2)Stanford University, Earth System Science, Stanford, United States
Modeling the Impact of Biogeochemical Hotspots and Hot Moments on Subsurface Carbon Fluxes from a Flood Plain Site (80555)
Bhavna Arora, Lawrence Berkeley National Laboratory, Earth and Environmental Sciences Area, Berkeley, CA, United States, Nicolas Spycher, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Carl I Steefel, Lawrence Berkeley National Laboratory, Berkeley, United States, Eric King, Lawrence Berkeley National Laboratory, Climate & Ecosystem Sciences Division, Berkeley, United States and Mark E Conrad, Lawrence Berkeley National Laboratory, Earth and Environmental Sciences Area, Berkeley, United States
Riverbed Bioclogging and the Effects on Infiltration and Carbon Flux under Climate Variability (76635)
Michelle E Newcomer, Lawrence Berkeley National Laboratory, Climate & Ecosystem Sciences, Berkeley, CA, United States, Susan S. Hubbard, Oak Ridge National Laboratory, Oak Ridge, TN, United States, Jan H Fleckenstein, Helmholtz Centre for Environmental Research UFZ Leipzig, Hydrogeology, Leipzig, Germany, Uli Maier, Helmholtz Centre for Environmental Research UFZ Leipzig, Leipzig, Germany, Christian Schmidt, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany, Martin Thullner, Helmholtz Centre for Environmental Research UFZ Leipzig, Applied Microbial Ecology, Leipzig, Germany, Craig Ulrich, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Nicolas Flipo, MINES ParisTech, Fontainebleau, France and Yoram Rubin, University of California Berkeley, Berkeley, CA, United States
Differences in dissolved organic matter lability between alpine glaciers and alpine rock glaciers of the American West (83578)
Ed Hall, Colorado State University, Department of Ecosystem Science and Sustainability, Fort Collins, CO, United States, Timothy Fegel, Colorado State University, Fort Collins, CO, United States, Jill Baron, USGS Colorado Water Science Center Denver, Denver, CO, United States and Claudia M Boot, Colorado State University, Chemistry, Fort Collins, United States
Glacial runoff strongly influences food webs in Gulf of Alaska fjords (81566)
Mayumi Arimitsu1, John F Piatt1 and Franz J Mueter2, (1)USGS Alaska Science Center, Anchorage, AK, United States, (2)UAF, College of Fisheries and Ocean Sciences, Juneau, AK, United States
Partially-drained Thaw Lakes as Hotspots of Biological Activity on the Arctic Coastal Plain of Alaska (75545)
Joshua C Koch, Tom Fondell and Joel A. Schmutz, USGS Alaska Science Center, Anchorage, AK, United States
Carbon Sources and Sinks in Freshwater and Estuarine Environments of the Arctic Coastal Plain. (84014)
Vanessa Lougheed, Gabriela Tarin and Craig E. Tweedie, University of Texas at El Paso, El Paso, TX, United States

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