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									JOEL C. HOFFMAN
Research Biologist

B.S., Resource Ecology and Management, University of Michigan Ann Arbor, 1999
B.S., Philosophy, University of Michigan Ann Arbor, 1999
Ph.D., Marine Science, The College of William and Mary, 2006

2009-Present      Research Biologist, U.S. EPA National Health and Environmental Effects Research Lab, Mid-
                  Continent Ecology Division, Duluth, MN

Research Interests and Skills:
Broadly, I am interested in how human-caused changes to the environment influence aquatic ecosystem processes,
habitat, and fish population success. I believe my research should support development of a workable practice of
sustainable ecosystem-based management. Specifically, my research goals are to understand how changes in
ecosystem function relates to food web function, particularly the exchange of nutrients, matter, and organisms
between ecosystems; to examine relationships between ecosystem function, habitat quality and fish recruitment; and
to develop survey tools to quantify the value of aquatic habitats to fish. My research is focused on coastal and
estuarine fishes because they are of economic and social importance and because their habitat is highly vulnerable to
anthropogenic impacts.

Professional Societies:
Phi Beta Kappa
American Fisheries Society
American Society of Limnology and Oceanography
Estuarine Research Federation

Selected Appointments/Honors/Major Awards:
2006-2009       Postdoctoral Research Associate, U.S. EPA, Duluth, MN
2008            2007 Best PhD Student Paper Award, Virginia Institute of Marine Science
2006            The Matthew Fontaine Maury Fellowship Award, The Maury Society, Virginia Institute of Marine
2005            Student Essay Award, American Fisheries Society
2003-2006       Graduate Research Fellowship, National Science Foundation

Selected Publications (last 5 years):
Hoffman, J.C., J.R. Kelly, A.S. Trebitz, G.S. Peterson, and C.W. West. In press. Effort and potential efficiencies for
         aquatic non-native species early detection. Canadian Journal of Fisheries and Aquatic Sciences.
Hoffman, J.C., A.M. Cotter, G.S. Peterson, T.D. Corry, and J.R. Kelly. In press. Rapid stable isotope turnover of
       larval fish in a Lake Superior coastal wetland: implications for diet and life history studies. Aquatic
       Ecosystem Health and Management.
Sierszen, M.E., J.A. Morrice, A.S. Trebitz, and J.C. Hoffman. In press. A review of selected ecosystem services
         provided by coastal wetlands of the Laurentian Great Lakes. Aquatic Ecosystem Health and Management.
Peterson, G.S., J.C. Hoffman, A.S. Trebitz, C.W. West, and J.R. Kelly. 2011. Establishment patterns of non-native
         fishes: lessons from the Duluth-Superior harbor, an invasion-prone Great Lakes freshwater estuary. Journal
         of Great Lakes Research 37:349-358.
Trebitz, A.S., C.W. West, J.C. Hoffman, J.R. Kelly, G.S. Peterson, and I.A. Grigorovich. 2010. Status of non-
         indigenous benthic invertebrates in the Duluth-Superior Harbor and the role of sampling methods in their
         detection. Journal of Great Lakes Research 36:747-756.
Hoffman, J.C., A.M. Cotter, G.S. Peterson, and J.R. Kelly. 2010. Using stable isotope mixing in a Great Lakes
       coastal tributary to determine food web linkages in young fishes. Estuaries and Coasts. 33:1391-1405.
Hoffman, J.C., and T. Sutton. 2010. Lipid correction for carbon stable isotope analysis of deep-sea fishes. Deep-Sea
       Research Part I 57:956-964.
Trebitz, A.S., J.R. Kelly, J.C. Hoffman, G.S. Peterson, and C.W. West. 2009. Exploiting habitat and gear patterns
         for efficient detection of rare and non-native benthos and fish in Great Lakes coastal ecosystems. Aquatic
         Invasions 4:651-667.
Hoffman, J.C., C.F. Bonzek and R.J. Latour. 2009. Estimation of bottom trawl catch efficiency for two demersal
       fishes, Atlantic croaker and white perch, in Chesapeake Bay. Marine and Coastal Fisheries: Dynamics,
       Management, and Ecosystem Science 1:255-269.
Hoffman, J.C., D.A. Bronk, and J.E. Olney. 2008. Organic matter sources supporting lower food web production in
       the tidal freshwater portion of the York River estuary, Virginia. Estuaries and Coasts 31:898-911.
Hoffman, J.C., D.A. Bronk, and J.E. Olney. 2008. Does terrestrial carbon subsidize production of estuarine fish
       larvae?, p. 34-45. In Y. Yamashita (ed.), Aquatic ecosystem production in waters linking forests, rivers and
       coasts, Fisheries Science Series Vol. 157, Koseisha-koseikaku, Tokyo, Japan.
Hoffman, J.C., K.E. Limburg, D.A. Bronk, and J.E. Olney. 2008. Overwintering habitats of migratory juvenile
       American shad in Chesapeake Bay. Environmental Biology of Fishes 81(3):329-345.
Hoffman, J.C., D.A. Bronk, and J.E. Olney. 2007. Contribution of allochthonous carbon to American shad
       production in the Mattaponi River, Virginia using stable isotopes. Estuaries and Coasts 30(6):1034-1048.
Hoffman, J.C., D.A. Bronk, and J.E. Olney. 2007. Tracking nursery habitat use by young American shad in the York
       River estuary, Virginia using stable isotopes. Transactions of the American Fisheries Society 136(5):1285–

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