EPA Science Inventory

Analysis of fish movements between Great Lakes coastal wetlands and near shore habitat via otolith microchemistry

Citation:

Schoen, L., J. Student, M. Sierszen, J. Hoffman, AND D. Uzarski. Analysis of fish movements between Great Lakes coastal wetlands and near shore habitat via otolith microchemistry. Presented at IAGLR Conference, Hamilton, ON, CANADA, May 26 - 30, 2014.

Description:

Great Lakes coastal wetlands are unique habitats with physical connections with near shore environments. This facilitates the exchange of energy between habitats in a principle known as habitat coupling. Coupling can be facilitated by movements of consumers; however, wetland use by fish is largely understudied in the Great Lakes. As a result, our goal was to reconstruct fish movements between the habitats. To accomplish this goal, wetland (WL) and near shore (NS) water and fish samples were collected from 13 sites across the basin for water and otolith trace element analysis. After standardizing to moles calcium, water chemistry indicated that Sr and Ba were most important in discerning WL and NS chemistry. Concentrations of Sr and Ba in recently deposited outer-otolith showed positive relationships with the water chemistry fish were caught in. As a result, outer-otolith Sr:Ca and Ba:Ca from WL and NS caught fish was used to build a predictive model of WL/NS chemistry using linear discriminant function analysis (LDFA). After verifying the model, it was applied to transect data to estimate habitat use. The results indicated three life histories for yellow perch including (1) WL residents (2) NS residents and (3) fish utilizing WL once/year. These data suggest complex life histories that may facilitate habitat coupling.

Purpose/Objective:

not applicable

URLs/Downloads:

ABSTRACT.PDF   (PDF,NA pp, 74.791 KB,  about PDF)

Record Details:

Record Type: DOCUMENT (PRESENTATION/SLIDE)
Completion Date: 10/14/2014
Record Last Revised: 10/14/2014
Record Created: 10/14/2014
Record Released: 10/14/2014
OMB Category: Other
Record ID: 289174

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL HEALTH AND ENVIRONMENTAL EFFECTS RESEARCH LAB

MID-CONTINENT ECOLOGY DIVISION