Extinction Risk and Population Viability

Population viability analysis (PVA) has become a commonly used tool in endangered species management. There is no single process that constitutes PVA, but all approaches have in common an assessment of population risk of extinction or projected population growth either under current conditions or expected from proposed management.

I have been involved in problems of population viability analysis since the mid-1980s, and much of my research focuses on problems related to population viability.

My current field projects on this topic include the effects of habitat loss on grassland birds, and the persistence island species such as the endangered white-breasted thrasher in St. Lucia, and endangered Hawaiian waterbirds.

I have also been working on projects estimating extinction risk and timing, collaborating with Chris Elphick and Dave Roberts.