people - faculty - Dickinson

Janis Dickinson
Associate Professor


102A Fernow Hall
Cornell University
Ithaca, NY 14853
Ph: 607-254-2194
Fx: 607-254-2111
e.mail: jld84@cornell.edu
website
Janis L. Dickinson

Ph.D - Cornell University - 1987
B.S. - Binghamton University - 1981

Janis Dickinson is a behavioral ecologist who has used western bluebirds as a model system for testing key hypotheses regarding the evolution of mating systems, sex ratio, dispersal behavior, cooperative breeding, migration, and life history traits. Trained as an entomologist, she has also studied insect mating systems. Her long-term study of color-banded western bluebirds is currently directed at understanding bird-mistletoe interactions and the potential impacts of vineyardization of the oak savanna habitats of central California. As Director of Citizen Science at Cornell Laboratory of Ornithology, she is developing research models that involve a blend of citizen research participation over a broad spatial scale with more focused studies at a selection of sites to address impacts of anthropogenic changes on biodiversity within a rich social and scientific context.

Research

Her current research involves 1) the role of mistletoe wealth in causing sons to delay dispersal and extend their stay in their natal family group, 2) the importance of parental nepotism to delayed dispersal, 3) patterns of inheritance of wealth and their impacts on avian social behavior, 4) landscape impacts on demography and dispersal patterns, and 5) vineyardization effects on population demography.

Extension

Janis directs the citizen science program at Cornell Laboratory of Ornithology (CLO) and her main office is located at the Johnson Center on Sapsucker Woods Road. Citizen science is a team effort involving CLO’s Directors of Conservation, Bird Population Studies, Assessment and Evaluation, and Education in a collaborative venture to engage regular people in exploratory research and monitoring at a continental scale. Citizen science at the lab has provided the platform for studying the spread of mycoplasmal conjunctivitis in house finches, winter irruption patterns in boreal birds, impacts of acid rain on calcium uptake in and population declines in thrushes, biodiversity impacts of forest fragmentation, and geographic variation in onset of breeding and incubation patterns. Long term citizen science projects include Project FeederWatch, The Birdhouse Network, Urban Birds, The House Finch Disease Survey, The Great Backyard Bird Count, Birds in Forested Landscapes, the warbler atlas projects, eBird and its Mexican counterpart, AverAves, and our newest effort, Project NestWatch, which expands The Birdhouse Network’s approach to include open nesting birds species. Underlying all of our projects is the belief that demographic and ecological patterns are best understood with long-term studies over a broad spatial scale and with close attention to the human components of scientific literacy and conservation ethics. We are engaged in active collaborations with Bird Studies Canada, The Audubon Society, Smithsonian Environmental Research Center and other scientific and conservation organizations.

Selected Publications

  • Dickinson, J.L. and A. McGowan. 2005. Resource wealth drives family group living in western bluebirds. Proceedings of the Royal Society, London B (In press).

  • Saether, B.-E., Engen, S., Møller, A.P, Visser, M.., Fiedler, W., Matthysen, E., Fiedler, W., Lambrechts, Becker, P.H. Brommer, J.E., Bukacinski, Dickinson, J., du Feu, C., Gehlbach, F.R., Merila, J., Rendell, W., Robertson, R., Thomson, D.L., Torok, J. 2005. Time to extinction in bird populations. Ecology 86: 693-700.

  • Dickinson, J.L. 2004. Local breeding competition and a female shortage explain helping behavior and facultative sex ratio adjustment in western bluebirds. Animal Behaviour 68: 373-380.

  • Dickinson, J.L. 2004. A test of the importance of direct and indirect fitness benefits for helping decisions in western bluebirds, Behavioral Ecology 15: 233-238.

  • Ekman, J., J.L. Dickinson, B.J. Hatchwell, and M. Griesser. 2004. Delayed dispersal. Pp 35-47 in: W.D. Koenig and J.L. Dickinson (eds) Evolution and Ecology of Cooperative Breeding in Birds. Cambridge University Press, Cambridge.

  • Dickinson, J.L. and B.J. Hatchwell. 2004. Fitness conseqeuences of helping behavior. Pp 48-66 in: W.D. Koenig and J.L. Dickinson (eds) Evolution and Ecology of Cooperative Breeding in Birds. Cambridge University Press, Cambridge.

  • Dickinson, J.L. 2001. Extrapair copulations in western bluebirds: female receptivity depends on male age. Behavioral Ecology and Sociobiology 50: 423-429.

  • Kraaijeveld, K. and J.L. Dickinson. 2001. Family-based winter territoriality in western bluebirds: the structure and dynamics of winter groups. Animal Behaviour. 61: 109-117.