EPA Science Inventory

Watershed and Lake Influences on the Energetic Base of Coastal Wetland Food Webs across the Great Lakes Basin

Citation:

SIERSZEN, M. E., J. C. BRAZNER, A. M. COTTER, J. A. MORRICE, G. S. PETERSON, AND A. S. TREBITZ. Watershed and Lake Influences on the Energetic Base of Coastal Wetland Food Webs across the Great Lakes Basin. JOURNAL OF GREAT LAKES RESEARCH. International Association for Great Lakes Research, Ann Arbor, MI, 38(3):418-428, (2012).

Description:

This manuscript examines the responses of Great Lakes coastal wetland food webs to nutrient enrichment and identifies three classes of systems whose food webs respond differently. Or is that differentially? Anyway, coastal wetlands with relatively long hydraulic residence times develop plankton communities, and in those systems planktonic carbon becomes more important to higher consumers with nutrient enrichment. Riverine wetlands (with short residence times) don’t have much plankton; their response to nutrients is a decreased importance of detrital carbon. A third class of wetlands obtains energetic subsidies from the adjacent Great Lake. In those systems, food web responses to nutrient enrichment aren’t detectable. These food web responses may serve as early warnings of eutrophication effects.

Purpose/Objective:

This manuscript examines the responses of Great Lakes coastal wetland food webs to nutrient enrichment and identifies three classes of systems whose food webs respond differently. Or is that differentially? Anyway, coastal wetlands with relatively long hydraulic residence times develop plankton communities, and in those systems planktonic carbon becomes more important to higher consumers with nutrient enrichment. Riverine wetlands (with short residence times) don’t have much plankton; their response to nutrients is a decreased importance of detrital carbon. A third class of wetlands obtains energetic subsidies from the adjacent Great Lake. In those systems, food web responses to nutrient enrichment aren’t detectable. These food web responses may serve as early warnings of eutrophication effects.

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Start Date: 09/01/2012
Completion Date: 09/01/2012
Record Last Revised: 10/22/2012
Record Created: 08/25/2011
Record Released: 08/25/2011
OMB Category: Other
Record ID: 237856

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL HEALTH AND ENVIRONMENTAL EFFECTS RESEARCH LAB

MID-CONTINENT ECOLOGY DIVISION

ECOSYSTEM ASSESSMENT RESEARCH