Month: March 2022

Temporal scope influences ecosystem driver-response relationships: A case study of Lake Erie with implications for ecosystem-based management

Dr. Jim Hood along with former AELers Mike Fraker and James Sinclair along with AEL faculty Stu Ludsin as well as long-time collaborator Ken Frank take a long-term (1969-2018) look at the driver-response relationships in Lake Erie. For this work, they compiled a large dataset of multiple biological, physical, chemical, and socioeconomic components to quantify trends and identify potential key drivers during multiple time intervals.

Fraker, M.E., J.S. Sinclair, K.T. Frank, J.M. Hood, S.A. Ludsin. 2022. Temporal scope influences ecosystem driver-response relationships: A case study of Lake Erie with implications for ecosystem-based management. Science of The Total Environment. doi.org/10.1016/j.scitotenv.2021.152473

Nutrient enrichment intensifies the effects of warming on metabolic balance of stream ecosystems

Dr. Jim Hood and colleagues show that nutrient enrichment drove large reductions in net ecosystem production, and interactions with temperature amplified these effects in warm N-enriched streams. These responses were shown to be driven by increase respiration of microbial heterotrophs.

Our study provides direct experimental evidence that warming-induced increases in CO₂ emissions to the atmosphere are likely intensified in stream ecosystems subject to eutrophication.

Cross, W.F., J.M. Hood, J.P. Benstead, A.D. Huryn, J.R. Welter, G.M. Gislason, J.S. Olafsson. 2022. Nutrient enrichment intensifies the effects of warming on metabolic balance of stream ecosystems. Limnology and Oceanography Letters. doi.org/10.1002/lol2.10244

Dr. Jim Hood, his students, and Aquatic Ecology Lab colleagues participated in the International Association for Great Lakes Research State of Lake Erie Conference March 16-17, 2022 by giving talks, presenting posters, and collaborating with colleagues. See a list of AEL talks and posters below, and find more details and collaborations in the conference abstract book [pdf].

Presentations

Jenna Bailey, D. O’Donnell, and J. Hood. Changes in zooplankton phenology in Western Lake Erie, 1995-2020.
Rich Budnik, K. Busch, C. Harris, M. Kulasa, M. Piczak, P. Collingsworth, W. Currie, J. Hoffman, J. Watkins, D. Bolgrien, K. Bowen, A. Cotter, J. Hood, M. Manubolu, L. Rudstam, and S. Ludsin. Cyanobacteria bloom effects on the feeding ecology of western Lake Erie’s fish assemblage.
Jim Hood, A. Huddleston, L. Collis, and E. Marschall. Western Lake Erie Zooplankton Dynamics Are Shaped by Winter Ice Cover and Summer Cyanobacteria Blooms.
Stuart Ludsin, P. Collingsworth, W. Currie, J. Hoffman, J. Watkins, D. Bolgrien, K. Bowen, A. Cotter, J. Hood, M. Manubolu, and Lars Rudstam. Overview of the 2019 CSMI program designed to understand harmful algal bloom & hypoxia impacts on Lake Erie’s webs.
Devan Mathie, H. Moore, and J. Hood. Phosphorus cycling during high flow events in the Maumee River watershed: A Lagrangian analysis.
Hannah Moore, and J. Hood. Influence of temperature and nutrients on primary production and phytoplankton biomass in western Lake Erie.

The Hood Lab is welcoming new technician Matthew Sens. He is joining us after completing his master’s at the University of Michgan SEAS program.