| Thursday, August 5, 2010: 1:30 PM-5:00 PM | |||
| 315-316, David L Lawrence Convention Center | |||
| OOS 48 - Causes and Consequences of Individual Variation in Dispersal | |||
| Dispersal, the movement of individuals between populations, is one of the most fundamental components of ecology and affects processes as diverse as population growth, metapopulation dynamics, and adaptation. A longstanding assumption of many studies on the ecological consequences of dispersal has been that dispersers are a random fraction of the population. Yet empirical data are increasingly revealing that dispersing individuals are not a random subset of the population; instead, dispersers often differ from non-dispersers in phenotype and genotype. Consequently, studies of population- and community-level processes that lump all dispersers into a simple aggregate may incorrectly assess the chance of extinction, rate of population growth, potential for adaptation or genetic differentiation, and impact on other species. Our organized oral session will explore the prevalence and implications of individual-variation in dispersal through presentations that discuss research investigating why individuals vary in their dispersal strategies and how individual variation in dispersal affects populations and communities. The speakers in this session reflect the diversity of scale at which the effects of individual variation on dispersal are being identified. By bringing together researchers working over a diverse range of systems and scales, we believe this session and associated discussion will help to develop a synthetic approach to understanding the role of individual variation in dispersal in ecological and evolutionary processes. | |||
| Organizer: | Shannon J. McCauley, University of Toronto | ||
| Co-organizer: | Michael F. Benard, Case Western Reserve University | ||
| Moderator: | Michael F. Benard, Case Western Reserve University | ||
| 1:30 PM | OOS 48-1 | Importance of spatial and individual heterogeneity for wind-dispersed plants Dirk V. Baker, Washington University in St. Louis, Ellen I. Damschen, University of Wisconsin-Madison, Gil Bohrer, Ohio State University, Jay R. Turner, Washington University in St. Louis | |
| 1:50 PM | OOS 48-2 | Foraging rates of larval dragonfly colonists are positively related to habitat isolation: Results from a landscape-level experiment Shannon J. McCauley, University of Toronto, Tomas Brodin, Umeå University, John I. Hammond, University of Pittsburgh | |
| 2:10 PM | OOS 48-3 | CANCELLED - The evolution of immigrant-based dispersal decision Jean Clobert, Station d'Ecologie Experimentale du CNRS | |
| 2:30 PM | OOS 48-4 | Measuring individual variation in dispersal and its demographic consequences Luca Borger, University of Guelph, John M. Fryxell, University of Guelph | |
| 2:50 PM | OOS 48-5 | The causes and consequences of variation in dispersal distance Winsor H. Lowe, University of Montana | |
| 3:10 PM | Break | ||
| 3:20 PM | OOS 48-6 | Landscape genetic consequences of natal habitat preference induction Karen E. Mabry, New Mexico State University | |
| 3:40 PM | OOS 48-7 | Differences in population differentiation between an outcrossing and selfing species Jessica Shade, University of California Berkeley, Ellen Simms, University of California Berkeley | |
| 4:00 PM | OOS 48-8 | Plant structure and spatial arrangement affect seed release and projected invasion speeds of invasive thistles Katherine M. Marchetto, The Pennsylvania State University, Eelke Jongejans, Institute for Water and Wetlands Research, Radboud University Nijmegen, Katriona Shea, The Pennsylvania State University, Matthew B. Williams, The Pennsylvania State University, Richard Auhl, The Pennsylvania State University, Scott A. Isard, The Pennsylvania State University | |
| 4:20 PM | OOS 48-9 | The effect of climate change on dispersal in a house sparrow Passer domesticus metapopulation Henrik Pärn, Norwegian University of Science and Technology, Thor Harald Ringsby, Norwegian University of Science and Technology, Henrik Jensen, Norwegian University of Science and Technology, Bernt-Erik Sæther, Norwegian University of Science and Technology | |
| 4:40 PM | OOS 48-10 | Variation in dispersal traits during invasion of the Soapberry Bug - invasion gradient vs. habitat effects Peter Søgaard Jørgensen, University of Copenhagen, Scott P. Carroll, Institute for Contemporary Evolution & UC Davis, Sharon Y. Strauss, University of California, Davis | |
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See more of The 95th ESA Annual Meeting (August 1 -- 6, 2010)