Science Inventory

Modeling the Sensitivity of Primary Production in Lake Michigan to Nutrient Loads with and without Dreissenid Mussels

Citation:

ROWE, M. D., J. PAUER, P. A. DEPETRO, AND R. G. KREIS. Modeling the Sensitivity of Primary Production in Lake Michigan to Nutrient Loads with and without Dreissenid Mussels . Presented at International Association for Great Lakes Research, Cornwall, ON, CANADA, May 13 - 17, 2012.

Impact/Purpose:

To document research results

Description:

Dreissenid (quagga) mussels became established in large numbers in Lake Michigan beginning around 2004. Since then, significant changes have been observed in Lake Michigan open-water chlorophyll and nutrient concentrations, and in primary production. We updated the LM3-Eutro model to investigate the response of chlorophyll concentrations and primary production in Lake Michigan to nutrient loading scenarios with and without representation of dreissenid mussel filter feeding. LM3-Eutro is a high resolution (5-km horizontal, 19 sigma-layers) nutrient, phytoplankton, zooplankton, and detritus model. We made several improvements to the model: 1) updated daily N and P loads for 1994-2008, 2) an interactive sediment compartment for nutrients, 3) updated photosynthesis-irradiance curves, and 4) representation of dreissenid mussel filter-feeding effects. Mussel biomass and temperature-dependent filtration rate were specified, based on literature values. The model was calibrated and verified over the period 1994-2008 using available data. Model runs illustrate the sensitivity of chlorophyll and primary production to changes in nutrient loads with and without dreissenid mussels.

URLs/Downloads:

5632ROWE.PDF   (PDF,NA pp, 49 KB,  about PDF)

Record Details:

Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Product Published Date: 05/17/2012
Record Last Revised: 05/28/2013
OMB Category: Other
Record ID: 241473

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL HEALTH AND ENVIRONMENTAL EFFECTS RESEARCH LABORATORY

MID-CONTINENT ECOLOGY DIVISION

LARGE LAKES & RIVER FORECASTING RESEARCH