Gregory Teegarden

Professor Teegarden teaches Introduction to Environmental Science, Field Methods in Aquatic Science, Ecology and the Environmental Challenge, Senior Seminar in Marine Science and Senior Research.

Academic interests include:

• oceanography
• limnology
• ecology of marine food webs
• marine pollution and ecosystem response

"My current research focuses on harmful algae or 'red tides' in the Gulf of Maine and their effects on marine food webs. In collaboration with colleagues from New England and Canada, I am investigating whether the feeding activities of plankton organisms may either allow the proliferation of red tide blooms of algae, or bring about the bloom's demise.

We are also tracking the trail of toxins produced by harmful algae through marine food webs, up to and including marine mammals that feed on plankton.

I also will be working with the Friends of Casco Bay, a local environmental protection organization, to assess the condition of Casco Bay. Student participation will be a prominent and crucial component in the successful development of this research project."

Publications
Article in the Journal of Plankton Research and Harmful Algae

Teegarden, G.J., Cembella, A.D., Capuano*, C.L., Barron*, S.H., and Durbin, E.G. (2003) Phycotoxin accumulation in zooplankton feeding on Alexandrium fundyense - vector or sink? Journal of Plankton Research 25: 429-443 (*Student authors)

Teegarden, G.J., R.G. Campbell and E.G. Durbin (2001). Zooplankton feeding behavior and particle selection in natural plankton assemblages containing toxic Alexandrium spp. Marine Ecology Progress Series 218: 213-226.

Teegarden, G.J. (1999). Copepod grazing selection and particle discrimination on the basis of PSP toxin content. Marine Ecology Progress Series 181: 163-176.

Teegarden, G.J. and A.D. Cembella (1996). Grazing of toxic dinoflagellates, Alexandrium spp., by adult copepods of coastal Maine : implications for the fate of paralytic shellfish toxins in marine food webs. Journal of Experimental Marine Biology and Ecology 196: 145-176.

Co-authored publications

Campbell , R.G., G.J. Teegarden, A.D. Cembella and E.G. Durbin (2005). Zooplankton grazing impacts on Alexandrium spp. in the nearshore environment of the Gulf of Maine. Deep Sea Research II 52: 2817-2833.

Baumgartner, M.F., T.V.N. Cole, R.G. Campbell, G.J. Teegarden, and E.G. Durbin (2003). Associations between North Atlantic right whales and their prey, Calanus finmarchicus, over diel and tidal time scales. Marine Ecology Progress Series 264: 155-166

Durbin, E.G., G.J. Teegarden, R.G. Campbell, A.D. Cembella, M. Baumgartner, and B.R. Mate (2002). North Atlantic right whale, Eubalaena glacialis , exposed to paralytic shellfish poisoning (PSP) toxins via a zooplankton vector, Calanus finmarchicus . Harmful Algae 1: 243-251

Campbell , R.G., M.M. Wagner, G.J. Teegarden, C.A. Boudreau, and E.G. Durbin (2001). Growth and development rates of the copepod Calanus finmarchicus reared in the laboratory. Marine Ecology Progress Series 221: 161-183

Short papers, notes and communications:

Teegarden, G.J., R.G. Campbell, A.D. Cembella, E.G. Durbin, S.H. Barron (2004) Patterns of short-term and long-term accumulation and loss of phycotoxins in zooplankton feeding on Alexandrium fundyense. In: Steidinger, K.A., J.H. Landsberg, C.R. Tomas and G.A. Vargo (Eds.) Harmful Algae 2002. Florida Fish and Wildlife Conservation Commission, Florida Institute of Oceanography, and Intergovernmental Oceanoraphic Commission of UNESCO, St. Petersberg, Florida, USA

Teegarden, G.J., R.G. Campbell, A.D. Cembella, E.G. Durbin (2004) Effects of Alexandrium fundyense cell concentration and cellular toxicity on copepod feeding behavior. Harmful Algae 3:256

Teegarden, G.J., A.D. Cembella and E.G. Durbin (1999). Copepod grazing of toxic Alexandrium spp. Does the presence of toxin affect particle selection? Canadian Technical Report of Fisheries and Aquatic Sciences No.2261

Teegarden, G.J. and A.D. Cembella (1996). Grazing of toxic dinoflagellates ( Alexandrium spp.) by estuarine copepods: particle selection and PSP toxins in marine food webs. In: Harmful and Toxic Algal Blooms, Yasumoto, T., Oshima Y. & Fukuyo, Y. (eds.). Intergovernmental Oceanographic Commission of UNESCO 1996.

Campbell, R.G., E.G. Durbin, G.J. Teegarden, A.D. Cembella (2004) Accumulation of PSP toxins in the copepod Calanus finmarchicus feeding on the toxigenic dinoflagellate Alexandrium spp. in laboratory and field studies. In: Steidinger, K.A., J.H. Landsberg, C.R. Tomas and G.A. Vargo (Eds.) Harmful Algae 2002. Florida Fish and Wildlife Conservation Commission, Florida Institute of Oceanography, and Intergovernmental Oceanoraphic Commission of UNESCO, St. Petersberg, Florida, USA.

Publications in press or submitted:

Teegarden, G.J., R.G. Campbell, D.T. Anson, A. Ouellett, B.A. Westman, E.G. Durbin (2006). Copepod feeding response to varying Alexandrium spp. cellular toxicity and cell concentration among natural plankton samples. Harmful Algae (submitted 9/06).

Presentations:

Co-presented "The Bowdoin Buoy Facility" with Edward Laine, associate professor of geology at Bowdoin College, at Kibbe Science Symposium at Bowdoin College.

Personal Interests:

His children, mountain climbing, biking, kayaking, music and old books.

Just how healthy is the Gulf of Maine? SJC oceanographers talk about environmental issues coming to the forefront of public debate and policymaking for this vital ecosystem.

Targeting harmful red tide in Casco Bay Real-time data from a sophisticated buoy and field studies could lead to an understanding of how red tide develops in the Sound.