Problems in the population and community ecology of marine plants and animals.
Department Vice Chair
Evolutionary developmental biology of animals and phylogenetics.
Understanding the functional and ecological diversity of vascular plants from an evolutionary perspective.
Functional morphology, the evolution of the vertebrate locomotor system.
Vertebrate evolution (especially Cenozoic mammals), craniodental functional morphology, mammalian systematics (especially ungulates).
Ecology and conservation science of coastal and marine systems
Behavioral ecology: foraging, life history variables, and sexual selection.
Biogeochemistry, nutrient cycling in tropical forests, interaction between geologic and ecological processes.
Population genetics and evolutionary theory, applied to human genetic variation
Microbial ecology and biogeochemistry.
Biomechanics and energetics of vertebrate movement.
Species invasions of non-native plants and animals; Evaluating conservation strategies best suited to preserving biodiversity from the novel threats posed by climate change.
Conservation Medicine; Disease Ecology; Biogeography; Global Environmental Change.
Biomechanics, functional morphology, and the evolution of vertebrate limbs.
Life history evolution with an emphasis on Senescence.
Graduate Program Co-Director
Population and community ecology, oceanography, and marine biology.
Applications of rRNA eukaryotic fluorescently lableled oligonucleotide probes using marine protists.
Research is driven by a desire to understand the relationship between ecosystem dynamics and animal populations.
Marine microbial ecology and biogeochemistry; ecosystem response to climate change; Antarctic marine ecology.
Research focuses on the principles of animal camouflage and visual signaling in marine and terrestrial habitats.
Research as an aquatic ecologist has attempted to identify the factors controlling decomposition and productivity within aquatic ecosytems. I am primarily interested in the role natural assemblages of microbes play in ecosystems.
Research focuses on marine microbial ecology, with an emphasis on deep-sea hydrothermal vents and crustal habitats, using molecular- and cultivation-based methods.
Molecular evolution and genetics and includes examination of patterns and processes of sequence evolution.
Interested in how human activities are altering the biogeochemistry of terrestrial ecosystems.
Research focuses on understanding how changes in land use and other human activities alter the structure of ecosystems and the ways that ecosystems cycle nutrients and organic matter.
Interested in ecosystem stoichiometry, particularly the constraints imposed by carbon-nutrient interactions on ecosystem productivity and carbon accumulation
Interested in plant growth and nutrition, and in the role of plants in ecosystem element cycles.
My research uses a combination of manipulative experiments on microbial communities and high-throughput sequencing to interrogate the evolutionary dynamics and ecological significance of naturally occurring genetic variation. Current projects include using microbes on leaf surfaces as a model for community dynamics, coupled genetic/functional/taxonomic diversity of microbes in agricultural soils, and environmental Pseudomonas species as models for measuring horizontal gene transfer.
Interested in terrestrial ecosystem ecology, soil biogeochemistry, and global change ecology, with a focus on ecosystem carbon and nitrogen cycles.
Research interests focus on modeling and experimental investigation of microbial dynamics related to the processing of inorganic and organic material in aquatic and marine ecosystems, with a primary focus on estuarine and coastal systems.