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Wolfe Hall Suite 1235
2801 West Bancroft St.,
Mail Stop #604
Toledo, Ohio 43606-3390
Faculty, Staff & Students
- FULL-TIME FACULTY
- Richard Becker
Jonathan M. Bossenbroek
Thomas B. Bridgeman
Mark J. Camp
Todd D. Crail
Timothy G. Fisher
Daryl F. Dwyer
Johan F. Gottgens
Scott A. Heckathorn
David E. Krantz
James M. Martin-Hayden
Christine M. Mayer
Daryl L. Moorhead
Carol A. Stepien
Alison L. Spongberg
Donald J. Stierman
Michael N. Weintraub
- AFFILIATED FACULTY
- EMERITUS & RETIRED FACULTY
- GRADUATE STUDENTS
Professor and Associate Chair
Pulse Stability in Wetlands
Succession in aquatic systems is often controlled by periodic perturbations, such as fluctuating water levels, drought, fire, grazing or tides. These perturbations remove organic matter and liberate nutrients. As such, they help maintain these ecosystems at an intermediate stage in their successional development. Water managers, however, generally aim to eliminate these disturbances, because they interfere with the use of aquatic habitat for water supply, navigation, recreation and aquaculture. Students test hypotheses relative to the long-term impact of eliminating or altering such a pattern of pulsed stability in lakes and wetlands.
Human Impacts on Rivers and Streams
Rivers and streams are among the most impacted ecosystems. They are used as conveyors of pollutants and have been dredged, dammed, ditched or diked. The majority of 1st and 2nd order streams, making up a stunning 75% of the total length of U.S. streams and rivers, have communities that no longer resemble their natural condition. Moreover, they have lost their ability to provide us with 'free' ecosystem services such as water quality protection and flood control. Students research stream management methods that incorporate environmental considerations, including dam removal to restore fish migration and ditch maintenance to promote conservation.
Paleolimnological Approaches to Restoration
To understand the response of lakes, rivers and wetlands to anthropogenic actions requires long-term records of environmental data. Because such historical data are usually absent, stratigraphic analysis of sedimentary records and the mechanisms that can modify those records (i.e., paleolimnology) may be used. The lab has published paleolimnological research on lake and wetland responses to water-level manipulations, development in the watershed, loading of agricultural non-point pollution, dam failures, and long-term contamination with toxics.
>> View Dr. Gottgens' Google Scholar page.
(* denotes student author)
Chu, H.*, J. Chen, J.F. Gottgens, Z. Ouyang*, R. John, K. Czajkowski, and R. Becker
Baca, K., T.G. Fisher and J.F. Gottgens.
Benedict, M. and Gottgens, J.F.
Crail, T.D*., Bossenbroek, J.M., and Gottgens, J.F.
Becher, C.* and Gottgens, J.F. 2012
Chu, H.S*, Chang, S.C., Klemm, O., Lai, C.W., Lin, Y.Z., Wu, C.C., Lin, J.Y., Jiang,
J.Y., Chen, J., Gottgens, J.F., and Hsia, Y.J. 2012.
Tessler, N.R*, Gottgens, J.F., and Kibbey, M.R. 2012.
Crail, T.D.*, Gottgens, J.F., and Krause, A.E. 2011.
EEES 2150 BIODIVERSITY [4 hours]
EEES 4730/5730/7730 AQUATIC ECOLOGY [3 hours]
EEES 4740/5740/7740 AQUATIC ECOLOGY LAB [1 hour]
EEES 4750/5750/7750 CONSERVATION BIOLOGY [4 hours]
EEES 4970 SENIOR ENVIRONMENTAL CAPSTONE [3 hours)