Plum Island Long-Term Ecological Research Site

 

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James Morris
Principal Investigator
Department of Biological Sciences
University of South Carolina
Columbia, SC 29208
Phone: 803-777-3948
Fax: 803-777-4002
email: morris@biol.sc.edu
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Education:

  • Ph.D. 1979 Forestry and Environmental Studies, Yale University
  • B.A. 1973 Environmental Sciences, University of Virginia M.S. 1975 Biology, Yale University

Research Interests:

  • biogeochemistry and ecology of wetlands, systems ecology, plant physiological ecology, numerical modeling

Professional Experience:

  • 1992-Present, Professor of Biology and Marine Science, University of South Carolina; Research Associate of the Belle W. Baruch Institute for Coastal Research, Univ.South Carolina;
  • 1993, Visiting Professor, Department of Plant Ecology, Aarhus University, Denmark
  • 1989-1994, Faculty Appointee, U.S. Geological Survey Water Resources Division
  • 1987-1992 Associate Professor, Univ. South Carolina
  • 1990, Visiting Associate Professor, Botansk Institute, Aarhus University, Denmark
  • 1981-1987, Assistant Professor of Biology & Marine Science, University of South Carolina
  • 1979-1981, Postdoctoral Fellow, Ecosystems Center, Marine Biological Laboratory, Woods Hole

Selected Publications:

  • Morris, J.T. 1980. The nitrogen uptake kinetics of Spartina alterniflora in culture. Ecology 61:1114-1121.
  • Morris, J.T. 1982. A model of growth responses of Spartina alterniflora to nitrogen limitation. Journal of Ecology 70:25-42.
  • Morris, J.T., R.A. Houghton, D.B. Botkin. 1984. Theoretical limits of belowground production by Spartina alterniflora. Ecological Modelling 26:155-175.
  • Morris, J.T. 1984. Effects of oxygen and salinity on ammonium uptake by Spartina alternifloraand Spartina patens. J. Exp. Mar. Biol. Ecol. 78:87-98.
  • Morris, J.T. and J. Dacey. 1984. Effects of O2 on ammonium uptake and root respiration by Spartina alterniflora. Amer. J. Bot. 71:979-985.
  • Morris, J.T. and G.J. Whiting. 1985. Gas advection in sediments of a South Carolina salt marsh. Mar. Ecol. Prog. Ser. 27:187-194.
  • Morris, J.T. and W.B. Bowden. 1986. A mechanistic, numerical model of sedimentation, mineralization, and decomposition for marsh sediments. Soil. Sci. Soc. Amer. J. 50:96-105.
  • Morris, J.T. and K. Lajtha. 1986. Decomposition and nutrient dynamics of litter from four species of fresh water emergent macrophytes. Hydrobiol. 131:215-223.
  • Morris, J.T. and G.J. Whiting. 1986. Emission of gaseous CO2 from salt marsh sediments and its relation to other carbon losses. Estuaries 9:9-19.
  • Whiting, G.J. and J.T. Morris. 1986. Nitrogen fixation (C2H2 reduction) in a salt marsh: its relationship to temperature and an evaluation of an in situ chamber technique. Soil Biol. Biochem. 18:515-521.
  • Morris, J.T. 1988. Pathways and controls of the carbon cycle in salt marshes. In: D.D. Hook (ed.), The ecology and management of wetlands. pp. 497-510. Croom Helm, U.K.
  • Chapelle, R.H., J.T. Morris, J.L. Zelibor, Jr., and P.B. McMahon. 1988. Bacterial metabolism and the del-13C composition of ground water, Floridan aquifer system, South Carolina. Geology 16:117-121.
  • Morris, J.T., G.J. Whiting, and F.H. Chapelle. 1988. Potential denitrification rates in deep sediments from the southeastern coastal plain. Env. Sci. Tech. 22:832-836.
  • Morris, J.T. 1989. Modelling light distribution within the canopy of the marsh grass Spartina alterniflora as a function of canopy biomass and solar angle. Agricultural and Forest Meteorology 46:349-361.
  • Morris, J.T., B. Kjerfve, J.M. Dean. 1990. Dependence of estuarine productivity on anomalies in mean sea level. Limnol. Oceanogr. 35: 926-930.
  • Bradley, P.M. and J.T. Morris. 1990. Influence of oxygen and sulfide concentration on nitrogen uptake kinetics in Spartina alterniflora. Ecology 71:282-287.
  • McMahon, P.B., D.F. Williams, J.T. Morris. 1990. Production and carbon isotopic composition of bacterial CO2 in deep coastal plain sediments of South Carolina. Ground Water 28:693-702.
  • Morris, J.T. and B. Haskin. 1990. A 5-yr record of aerial primary production and stand characteristics of Spartina alterniflora. Ecology 71:2209-2217.
  • Bradley, P.M. and J.T. Morris. 1990. Physical characteristics of salt marsh sediments: ecological implications. Mar. Ecol. Prog. Ser. 61:245-252.
  • Bradley, P.M., B. Kjerfve, and J.T. Morris. 1990. Rediversion salinity change in the Cooper River, South Carolina: ecological implications. Estuaries 13:373-379.
  • Bradley, P.M. and J.T. Morris. 1991. The influence of salinity on the kinetics of NH4+ uptake in Spartina alterniflora. Oecologia 85:375-380.
  • Hwang, Y.H. and J.T. Morris. 1991. Evidence for hygrometric pressurization in the internal gas space of Spartina alterniflora. Plant Physiology 96:166-171.
  • Morris, J.T. 1991. Effects of nitrogen loading on wetland ecosystems with particular reference to atmospheric deposition. Annual Review of Ecology and Systematics 22:257-279.
  • Bowden, W.B., C.J. Vorosmarty, J.T. Morris, B.J. Peterson, J.E. Hobbie, P.A. Steudler, and B.A. Moore. 1991. Transport and processing of nitrogen in a tidal freshwater marsh. Water Resources Research 27:389-408.
  • Bradley, P.M. and J.T. Morris. 1991. The relative importance of ion exclusion, secretion and accumulation in Spartina alterniflora Loisel. J. Exp. Bot. 42:1525-1532.
  • Morris, J.T. and B.C. Coull. 1992. Population dynamics, numerical production, and potential predation impact on a meiobenthic copepod. Can. J. Fish. Aquatic Sci. 49:609-616.
  • Hwang, Y.H. and J.T. Morris. 1992. Fixation of inorganic carbon from different sources and its translocation in Spartina alterniflora Loisel. Aquatic Botany 43:137-147.
  • Bradley, P.M. and J.T. Morris. 1992. Effect of salinity on the critical nitrogen concentration of Spartina alterniflora Loisel. Aquatic Botany 43:149-161.
  • Hwang, Y.H. and J.T. Morris. 1994. Whole plant gas exchange responses of Spartina alterniflora (Poaceae) to a range of constant and transient salinities. Amer. J. Bot. 81:659-665.
  • Boesch, D.F., M.N. Josselyn, A. Mehta, J.T. Morris, W.K. Nuttle, C.A. Simenstad, and D.J. Swift. 1994. Scientific assessment of coastal wetland loss, restoration and Management in Louisiana. J. Coastal Research Special Issue #20, 103 pp.
  • Otte, M.L. and J.T. Morris. 1994. Dimethylsulphoniopropionate (DMSP) in Spartina alternilforaLoisel. Aquatic Botany 48:239-259.
  • Brix, H., B. Lorenzen, J.T. Morris, H.-H. Schierup, and B.K. Sorrell. 1994. Effects of oxygen and nitrate on ammonium uptake kinetics and adenylate pools in Phalaris arundinacea L. and Glyceria maxima (Hartm.) Holmb. Proc. Royal Soc. Edinburgh 102B: 333-342.
  • Morris, J.T. 1995. The salt and water balance of intertidal sediments: results from North Inlet, South Carolina. Estuaries 18:556-567.
  • Morris, J.T., C. Haley, and R. Krest. 1996. Effects of sulfide concentrations on growth and dimethylsulphoniopropionate (DMSP) concentration in Spartina alterniflora, pp. 87-95 In Biological and Environmental Chemistry of DMSP and Related Sulfonium Compounds. R.Kiene, PVisscher, M. Keller and G Kirst (eds), Plenum, NY.
  • Morris, J.T. & A. Jensen. 1998. The carbon balance of grazed and nongrazed Spartina anglicasaltmarshes at Skallingen, Denmark. J.Ecol.86: 229-242.
  • Lewitus, A.J., E.T. Koepfler, and J.T. Morris. 1998. Trophic interactions in a salt marsh estuarine microbial food web. I. Top-down control of the phytoplankton bloom. Limnology and Oceanography 43:636-646.
  • Paludan, C. and J.T. Morris. Distribution and speciation of phosphorus along a salinity gradient in intertidal marsh sediments. Biogeochemistry. in press.
  • Mendelssohn, I.A. and J.T. Morris. Ecophysiological controls on the growth of Spartina alterniflora. In: Concepts and Controversies in Tidal Marsh Ecology, N.P. Weinstein and D.A. Kreeger (eds.), Kluwer Academic Publishers. in prep.

Society Memberships:

  • American Assoc. Advancement Science
  • Estuarine Research Federation
  • American Society of Limnology & Oceanography
  • Sigma Xi

Recent Professional Activity:

  • Participant, EPA NOx criteria document review; Research Triangle, NC, April 1992
  • Panel member and author, 'The Scientific Principles of Wetland Loss, Restoration and Creation in Coastal Louisiana', Alton Jones Foundation review, Baton Rouge, 1993-1994
  • Representative, NSF-LTER all scientists meeting, Estes Park, Sept. 1993
  • Representative, NSF-LMER all-scientists meeting, Astoria-Seaside, OR, Oct. 1993
  • Steering Committee, US National Committee, SCOPE workshop on estuarine synthesis, 1994-1995
  • NSF Career Development Awards Panel, 1994
  • Georgia Sea Grant Review Panel, 1995
  • EPA workshop to set the agenda for future research on nutrient effects on aquatic habitats, Washington, Dec. 1995
  • NSF workshop on the LIDET (a long term, multi-site study) decomposition experiment, Silveta LTER site, New Mexico, March 23-25, 1996
  • NSF workshop on joint research with Mexico, Guaymas, Mexico; April 11-14, 1996
  • Member, NSF Ecosystems Program Review Panel, 1994-1997
  • Member, White House Office of Science and Technology Workshop on National Environmental Monitoring and Research, Sept. 1996
  • Chair, biogeochemistry focus group, SERDP workshop on defining research priorities relative to implementing ecosystem management on defense lands, June 1997
  • EPA Program Review Panel, Aug 1998
  • Subject Editor, Journal of Mangroves and Salt Marshes, 1997-present
 

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This material is based upon work supported by the National Science Foundation under Cooperartive Agreement #OCE-9726921. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.