Events

School seminar series: The causes and consequences of variation in dispersal distance


22 March 2013

Winsor H. Lowe, Associate Professor, Division of Biological Sciences, The University of Montana, Missoula, MT 59812, USA
Visiting Associate Professor, Australian Rivers Institute, Griffith University, Nathan, Queensland 4111, AU
Email: winsor.lowe@umontana.edu

Dispersal is a fundamental process in population biology, ecology, and evolution. In most species, dispersal distributions are characterized by many individuals that remain close to their origin and large variation in the distances moved by those that leave. Darwin saw that long-distance dispersal played a key role in range expansion, and models show that dispersal distance can strongly affect population and community dynamics. But despite these wide-ranging implications, we have little understanding of how variation in dispersal distance is maintained in natural populations and, more specifically, the fitness consequences of long-distance dispersal. My research uses a stream salamander system to address these gaps in our understanding of the proximal causes and consequences of variation in dispersal distance. This work does not support the widely held view that fitness consequences of long-distance dispersal are unpredictable, and instead suggests that consistent evolutionary mechanisms may explain the prevalence of long-distance dispersal in nature.

Followed by lunch at the Grandstand ($5 students, $10 staff) - please RSVP to Shawn by 5pm Thursday if you wish to come along shawn.wilder@sydney.edu.au


Time: 1-2pm

Location: DT Anderson Lecture Theatre, A08