Research output per year
Research output per year
Personal profile
About
My interests focus on diversity in ecological systems at several levels of organization and scales of time and space. A long-standing interest is the evolutionary diversification of avian life histories, emphasizing comparative and theoretical analyses of variation in life tables, including patterns of senescence, and physiological and experimental studies of growth, development, and parental care. On a higher level of ecological organization, I am interested in the historical development of ecological communities and regional species richness, using comparative analyses of diversity patterns and molecular analyses of genetic divergence and phylogenetic relationship. Through these studies, I would like to understand how factors that promote diversification, such as selection, speciation, and dispersal, are balanced by constraints that limit the response to selection or the coexistence of species.
Contact Information
Phone: (314) 516-5101
Fax: (314) 516-6233
Related documents
Education/Academic qualification
Postdoctoral Fellowship, Smithsonian Tropical Research Institute
1967 → 1968
Biology, PhD, University of Pennsylvania
1963 → 1967
Biology, A.B., Stanford University
1959 → 1963
External positions
Professor, University of Pennsylvania
Jan 1 1978 → Jan 1 1995
Associate Professor, University of Pennsylvania
Jan 1 1972 → Jan 1 1978
Assistant Professor, University of Pennsylvania
Jan 1 1968 → Jan 1 1972
Research Interests
- Evolutionary Ecology
- Community Ecology
- Biogeography
- Life History Biology
- Animals in Their Natural Habitats
- Identification of Pathogens
- Phylogenetics and Phylogeography
- GenBank
- Tropicos
- Cluster Analysis
- Exploratory Factor Analysis
- SAS
- Avian Life Histories
- Avian Demography
- Avian Malaria
- Host-parasite Interaction
- Island Biology
- Phylogenetics
- Historical Ecology
Disciplines
- Biology
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Host-specific soil microbes contribute to habitat restriction of closely related oaks (Quercus spp.)
Wu, Y., Brown, A. & Ricklefs, R., Dec 2022, In: Ecology and Evolution. 12Research output: Contribution to journal › Article › peer-review
Open AccessFile -
Historical demography of Coereba flaveola on Puerto Rico
Humphries, M. B., De Oliveira Pil, M. W. B., Latta, S. C., Marra, P. P. & Ricklefs, R. E., Apr 1 2019, In: The Auk. 136Research output: Contribution to journal › Article › peer-review
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Immunogenetic response of the bananaquit in the face of malarial parasites
Antonides, J., Mathur, S., Sundaram, M., Ricklefs, R. & DeWoody, J. A., Dec 1 2019, In: BMC Evolutionary Biology. 19Research output: Contribution to journal › Article › peer-review
Open AccessFile -
Phylogeography and historical demography of Carib Grackle ( Quiscalus lugubris )
Humphries, M. B., Gonzalez, M. A. & Ricklefs, R. E., Mar 10 2019, In: The Journal of Caribbean Ornithology. 32Research output: Contribution to journal › Article › peer-review
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Population structure of avian malaria parasites
Humphries, M. B., Stacy, M. T. & Ricklefs, R. E., Jul 1 2019, In: Ecology and Evolution. 9Research output: Contribution to journal › Article › peer-review
Open AccessFile