Sessions


027 Feeding a hungry planet: how is agriculture affecting aquatic ecosystems and what role will global change play?

The effects of agriculture on aquatic ecosystems are widespread and can have large societal and economic impacts. These impacts include nutrient enrichment and subsequent eutrophication, altered hydrology resulting in increased erosive capacity and sedimentation, as well as significant changes in biodiversity and ecosystem function. Modern agriculture is challenged to increase productivity and simultaneously minimize environmental consequences in the face of changing climatic patterns, which may lead to extended or more frequent droughts and increased variation in precipitation. There are currently a number of recommended practices to help achieve the compromise of increased agricultural production and enhance the functioning of agro- ecosystems. The goal of this session is to examine the overall influence of agriculture on aquatic ecosystems and the interaction of these influences with indicators of global change. Topics may include water quality, biogeochemistry, ecosystem functioning, and biodiversity. These responses are often examined separately, but to fully understand the effect of agriculture on freshwater ecosystems an integrative approach is needed. This session will synthesize our understanding of agricultural influences on a variety of aquatic ecosystems and how global change may alter these influences. Finally, the session will facilitate new research directions and collaborations that cross traditional boundaries in aquatic science.

Session organizer(s)

Laura Johnson, Heidelberg University
ljohnso1@heidelberg.edu

Amy Burgin, University of Nebraska
aburgin2@unl.edu

Todd Royer, Indiana University
troyer@indiana.edu

Jennifer Tank, University of Notre Dame
tank.1@nd.edu



Date: 5/21/2014

Please click on the title of an abstract to view the complete abstract.


Oral Presentations
Location: E 142 - 144

10:00
Werner, B. A.; Tracy, J.; Johnson, W. C.; Voldseth, R. A.; Guntenspergen, G. R.; Millett, B.; MODELING THE EFFECTS OF TILE DRAIN PLACEMENT ON THE HYDROLOGIC FUNCTION OF FARMED PRAIRIE WETLANDS (Abstract ID:13726) o

10:15
Gettel, G. M.; van Dam, A. A.; Hes, E. M.; AGRICULTURAL DEVELOPMENT IN WETLANDS IN SUB-SAHARAN AFRICA: IMPLICATIONS FOR NITROGEN RETENTION (Abstract ID:14645) o

10:30
Goyette, J. O.; Howarth, R. W.; Bennett, E.; Maranger, R.; CHANGES IN ANTHROPOGENIC NITROGEN INPUTS TO THE ST. LAWRENCE BASIN OVER THE LAST 100 YEARS (Abstract ID:14483) o

10:45
Dee, M. M.; Tank, J. L.; Mahl, U. H.; Powers, S. M.; ESTIMATING THE IMPACT OF FLOODPLAIN RESTORATION ON NUTRIENT EXPORT FROM THE WABASH RIVER WATERSHED: A HISTORICAL PERSPECTIVE (Abstract ID:15037) o

11:00
Elias, D.; Bernot, M. J.; META-ANALYSIS OF THE RELATIONSHIP BETWEEN STREAM PHYSICOCHEMICAL PARAMETERS AND PESTICIDE ABUNDANCE IN MIDWESTERN STREAMS (Abstract ID:14934) o

11:15
Burgin, A. J.; Loecke, T. D.; Riveros-Iregui, D. A.; Thomas, S. A.; Ward, A. S.; Davis, C. A.; St. Clair, M. A.; WEATHER WHIPLASH IN AGRICULTURAL REGIONS CREATES UNFORESEEN CHANGES IN WATER QUALITY (Abstract ID:13504) o

11:30
Wilson, H. F.; Glenn, A. J.; CARBON, NITROGEN, AND PHOSPHORUS CHEMISTRY AND EXPORT IN AGRICULTURAL WATERSHEDS OF THE ASPEN PARKLAND ECOREGION AS INFLUENCED BY LAND USE AND LANDFORM (Abstract ID:14205) o

11:45
Hanrahan, B. R.; Tank, J. L.; Aubeneau, A. F.; Bolster, D.; ISOLATING THE INFLUENCE OF SUBSTRATE HETEROGENEITY ON BIOFILM-MEDIATED NUTRIENT RETENTION IN STREAMS (Abstract ID:15022) O

13:30
Maofang, G.; Jianjun, Q.; Changsheng, L.; Yuan, S.; Yong, L.; NITROGEN REMOVAL AND RETENTION IN AGRICULTURAL STREAMS OF FIVE TYPICAL CATCHMENTS OF YANGTZE WATERSHED IN CHINA (Abstract ID:14742) o

13:45
Hansen, A. T.; Finlay, J. C.; CONTROLS ON AQUATIC NITROGEN UPTAKE WITHIN AN AGRICULTURAL WATERSHED (Abstract ID:15430) o

14:00
Huyck Orr, C.; Keller, C. K.; Kelley, C. J.; Moon-Neilsen, L.; Martin, R. A.; DO GREENHOUSE GASSES EVADED FROM AGRICULTURAL STREAMS HAVE A TERRESTRIAL SOURCE? (Abstract ID:15020) o

14:15
D'Amario, S. C.; Xenopoulos, M. A.; LINKING STREAM DISSOLVED CO2 TO AGRICULTURE LAND USE AND DISSOLVED ORGANIC CARBON QUALITY (Abstract ID:14520) o

14:30
Reisinger, A. J.; Tank, J. L.; Rosi-Marshall, E. J.; Hall, R. O.; Baker, M. A.; REGIONAL AND SEASONAL VARIATION IN NUTRIENT LIMITATION OF RIVERINE BIOFILMS (Abstract ID:13911) o

14:45
Bruder, A.; Salis, R.; Rodriguez-Lozano, P.; Matthaei, C. D.; STREAM ECOSYSTEM FUNCTIONING AFFECTED BY MULTIPLE AGRICULTURAL STRESSORS: A FOUR-STRESSOR STREAMSIDE MESOCOSM EXPERIMENT (Abstract ID:14268) o

15:00
Johnson, L. T.; Boehler, J. A.; Boehler, C. T.; Krieger, K. A.; Baker, D. B.; MACROINVERTEBRATE COMMUNITY STRUCTURE IN AGRICULTURAL DITCHES, THE HEADWATER STREAMS OF AGRO-ECOSYSTEMS (Abstract ID:13848) o


Date: 5/22/2014

Please click on the title of an abstract to view the complete abstract.


Poster Presentations
Location: Poster/Exhibit Hall

123
Keitzer, S. C.; Sowa, S.; Annis, G.; Froehlich, A.; Herbert, M.; Sasson, A.; Ludsin, S. A.; STREAM FISH COMMUNITY DYNAMICS IN LAKE ERIE’S AGRICULTURALLY DOMINATED WESTERN BASIN WATERSHEDS, 1900-2012 (Abstract ID:13871) P