DAVID E. LINCOLN

David E. Lincoln

Professor of Biological Sciences
Ph.D., 1978, Univ. of California, Santa Cruz
803-777-7306
lincoln@biol.sc.edu

Community and Chemical Ecology, Carbon Cycle, Plant/Herbivore Interactions , Biodiversity

Dr. Lincoln's research interests focus on how interactions among members of terrestrial and marine communities, especially chemically-mediated interactions, influence community structure and function and how these processes are affected by global change. Globally rising atmospheric CO2 stimulates photosynthesis and leads to an accumulation of carbohydrates, increased C/N ratio, and altered pr oduction of allelochemicals in leaves. Insect herbivores respond to these changes with increased feeding and/or decreased growth and reproduction. As herbivores and their predators are influenced by the changes in plants, food webs and their functions change. One focus of his research is to examine how global change, especially elevated CO2, affects biodiversity. He is assessing the dive rsity and ecosystem roles of forest canopy insects and soil fauna in an intact forest under elevated CO2 as a model system to test top-down versus bottom up control of food web structure in ecosyst ems. His laboratory's comparisons of terrestrial and marine communities have suggested that similar chemically-mediated interactions, e.g. chemical defense and inhibition of recruitment take place i n both systems. He has been particularly interested in genetic and environmental control of chemical defense in both plants and animals, including how abiotic resource conditions influence allocatio n. These interests in both the evolution and ecology of organismal interactions have led to an increasing emphasis on the molecular basis for chemical defense variation as it may influence the poten tial for ecologically-driven evolution.

Selected Publications:

Lincoln, D.E. (1993). The influence of plant carbon dioxide and nutrient supply on susceptibility to insect herbivores. Vegetatio 104: 273-280.

Woodin, S.A., R. L. Marinelli, D.E. Lincoln. 1993. Allelochemical inhibition of recruitment in a sedimentary assemblage. J. Chem. Ecol. 19: 517-530.

Lincoln, D.E. (1993) Plant-Insect herbivore interactions in elevated CO2 environments. Trends in Ecology and Evolution 8: 64-68.

Williams, R.S., Lincoln, D.E. and R.B. Thomas (1994) Loblolly pine grown under elevated CO2 affects eary instar pine sawfly performance. Oecologia 98: 64-71

Han, K. and Lincoln, D.E. (1994) The evolution of carbon allocation to plant secondary metabolites: A genetic analysis of cost in Diplacus aurantiacus. Evolution 48: 1550-1563

Marks, S. and Lincoln, D.E. (1996) Antiherbivore defense mutualism under elevated carbon dioxide levels: a fungal endophyte and grass. Environmental Entomology 25:618-623

Han, K. and Lincoln, D.E. (1996) The impact of plasticity and maternal effect on the evolution of leaf resin production in Diplacus aurantiacus. Evolutionary Ecology: in press.

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