George L. Jacobson, Jr.
Climate Change Institute
University of Maine
Bryand Global Sciences Center
Orono, ME 04469-5790
207-581-2991 Ph/Voicemail
207-581-1203 Fax
jacobson at maine.edu
My primary interests concern long-term climate change, and forest responses to climate change. As a result, my teaching and research themes involve both modern and ancient vegetation and ecology. Recent projects involve the ecology and paleoecology of forests, peatlands, and salt marshes. These studies have included analysis of local and regional patterns in vegetation, with special emphasis on how spatial and temporal variations in climate, geology, disturbance, and other factors have affected the plant assemblages. The work has involved geographic areas including northern New England, Florida, Scotland, and Sweden, with some analyses at continental scale. The goal of this research is to understand long-term variability in climate and in ecological processes, many of which are not evident on modern landscapes or within human life spans.
Class readings: INT500 Fall 2007 "Peopling of South America"
Schaulffler, M., S.J. Nelson, J.S. Kahl, G.L. Jacobson, T.A. Haines, W.A. Patterson and K.B. Johnson. 2007. Paleoecological assessment of watershed history in PRIMENet watersheds at Acadia National Park, USA. Environmental Monitoring and Assessment 126:39-53.
Grimm, E.C., W.A. Watts, G.L. Jacobson, B.C.S. Hansen, H. Almquist, and A.C. Dieffenbacher-Krall. 2006. Evidence for warm wet Heinrich events in Florida. Quaternary Science Reviews 25: 2197-2211 .
Huang, Y., B. Shuman, Y. Wang, T. Webb III, E.C. Grimm, and G.L. Jacobson. 2006. Climatic and environmental controls on the variation of C3 and C4 plant abundances in central Florida for the past 62,000 years. Paleogeography, Paleoclimatology, Paleoecology 237: 428-435.
Jacobson, G.L. 2006. Past and future forest responses to climate change in New England. New England Society of American Foresters, News Quarterly 67(4):9-11. Grimm, E.C., W.A. Watts, G.L. Jacobson, B.C.S. Hansen, H. Almquist, and A.C. Dieffenbacher-Krall. 2006. Evidence for warm wet Heinrich events in Florida. Quaternary Science Reviews 25: 2197-2211.
Grimm, E.C. and G.L. Jacobson Jr. 2004. Late Quaternary vegetation history of the eastern United States. pp. 381-402 In Gillespie, A.R., S.C. Porter, and B.F. Atwater (eds.) The Quaternary Period in the United States. Elsevier, Boston.
Borns, H.W., Jr., L.A. Doner, C.C. Dorion, G.L. Jacobson Jr., M.R. Kaplan, K.J. Kreutz, T.V. Lowell, W.B. Thompson, and T.K. Weddle. 2004. The deglaciation of Maine, U.S.A. pp. 89-109 in Ehlers, J. & Gibbard, P.L. (eds) Quaternary Glaciations - Extent and Chronology, Part II: North America. Elsevier, Amsterdam.
Lindbladh, M., G.L.Jacobson Jr., and M.Schauffler. 2003. The postglacial history of three Picea species in New England, USA. Quaternary Research 59:61-69.
Lindbladh, M., R. O'Connor, and G.L. Jacobson, Jr 2002. Morphometric analysis of pollen grains for paleoecological studies: classification of Picea from eastern North America. American Journal of Botany 89: 1459-1467.
Schauffler, M. and G.L. Jacobson Jr. 2002. Persistence of coastal spruce refugia during the Holocene in northern New England, USA, detected by stand-scale pollen stratigraphies. Journal of Ecology 90:235-250. [This paper was recognized in a special essay by Peter Moore, “Climate Records Spruced Up” in the News and Views section of Nature, 9 May 2002.]
Dieffenbacher-Krall A.C. and G.L. Jacobson Jr. 2001. Post-glacial changes in the geographic ranges of certain aquatic vascular plants in North America. Proceedings of the Royal Irish Academy 101B:79-84.
Moreno, P.I., G.L. Jacobson Jr., T.V. Lowell, and G.H. Denton. 2001. Late-glacial cooling revealed by pollen records from the Chilean Lake District (41oS). Nature 409:804-808.
Moreno, P.I., T.V. Lowell, G.H. Denton, G.L. Jacobson, Jr., and B.G. Andersen: 1999. Abrupt changes in vegetation and climate during the last glacial maximum and last termination in the Chilean lake district: A case study from Canal de la Puntilla (41ºs). Geografiska Annaler 81: 285-312.
Schauffler, M. and G.L. Jacobson Jr. 1998. Paleoecology of coastal and interior Picea (spruce) stands in Maine. Research summary and management recommendation. Technical Report NPS/BSO-BNR/NRTR/00-1. U.S. Department of Interior, National Park Service.
Schauffler, M., G.L. Jacobson Jr., A.L. Pugh IV, and S.A. Norton: 1996. Influence of vegetational structure on capture of salt and nutrient aerosols in a Maine peatland. Ecological Applications, 6:263-268.
Jacobson, G.L. Jr. and A. Dieffenbacher-Krall: 1995. White pine and climate change: Insights from the past. Journal of Forestry 93:39-42.
Grimm, E.C., G.L. Jacobson Jr., W.A. Watts, B.C.S. Hansen, and K.A. Maasch: 1993. A 50,000 year record of climate oscillations from Florida and its temporal correlation with the Heinrich events. Science 261:198-200.
Grimm, E.C. and G.L. Jacobson Jr.: 1992. Fossil-pollen evidence for abrupt climatic change during the past 14,000 years in eastern North America. Climate dynamics 6:179-184.
Jacobson, G.L., Jr., H.A. Jacobson, and J.C. Winne: 1991. Conservation of rare plant habitat: Insights from the recent history of vegetation and fire at Crystal Fen, northern Maine, U.S.A. Biological Conservation 57:287-314.
McMahon, J.S., G.L. Jacobson Jr., and F. Hyland: 1990. An Atlas of the Native Woody Plants of Maine: A Revision of the Hyland Maps. Maine Agricultural Experiment Station, Bulletin 830. 259 pp.
Hunter, M.L., Jr., G.L. Jacobson, Jr., and T. Webb III: 1989. Paleoecology and the coarse-filter approach to maintaining biological diversity. Conservation Biology 2:375-385. [Reprinted as one of the featured papers in D. Ehrenfeld. Ed (1995) Plant conservation: Readings from conservation Biology.]
Jacobson, G.L., Jr., T. Webb III, and E.C. Grimm: 1987. Patterns and rates of vegetation change during the deglaciation of eastern North America. Pp. 277-288. In W.F. Ruddiman and H.E. Wright, Jr. (eds.) North America During Deglaciation. The Geology of North America, DNAG v. K3, Geological Society of America.
Jacobson, G.L., Jr. and E.C. Grimm: 1986. Numerical analysis of Holocene forest and prairie vegetation in central Minnesota. Ecology 67:958-966.
Davis, R.B. and G.L. Jacobson, Jr.: 1985. Late-glacial and early post-glacial landscapes in northern New England and adjacent Canadian regions. Quaternary Research 23:341-368.
Davis, R.B. and G.L. Jacobson, Jr.: 1985. Inferred extent of ice cover during deglaciation. In Thompson, W.B. and H.B. Borns, Jr. (Eds.), Surficial geologic map of Maine. Maine Geological Survey, Augusta.
Jacobson, G.L., Jr. and R.H.W. Bradshaw: 1981. The selection of sites for paleovegetational studies. Quaternary Research 16:80-96.
Jacobson, G.L., Jr. and H.J.B. Birks: 1980. Soil development on recent terminal moraines of the Klutlan Glacier, Southwest Yukon, Canada. Quaternary Research 14:87-100.