Seminar Series - USGS EcoLunch

USGS EcoLunch is a forum for students, researchers, visiting scientists and collaborators in the environmental sciences to present their current and past work. Presentations will range from brown bag discussions of ongoing projects to more formal and polished seminar presentations.

Upcoming 2015 Seminar

NOROCK EcoLunch Speaker
Date: Tuesday, March 3rd

Time: 12:00 pm MDT

Speaker(s): Aaron Johnston, Research Wildlife Biologist/Mendenhall Fellow

Title: Extinction dynamics and microrefugia of the American pika as climate changes.

Abstract: Accurate projections of climate change and associated impacts on wildlife are now essential to conservation planning, but predictive models of range shifts for many species are often coarse, ignore extinction dynamics, and overestimate suitable habitat. Recent studies suggest the American pika (Ochotona princeps) is vulnerable to increasing heat stress in the Great Basin yet appears more resilient to climate change in other regions. Surprisingly, pikas have persisted outside of their bioclimatic envelope in some regions where temperatures commonly exceed their physiological tolerance level. These findings suggest extinction mechanisms vary regionally and that pikas have adapted to local climate or use microrefugia within talus to avoid extreme temperatures. The objectives of this study are to 1) develop high-resolution maps of talus through fusion of LiDAR and aerial imagery, 2) develop predictors for untested hypotheses about microtopography, snowpack, and phenology as extinction mediators, 3) evaluate regional variation in extinction mechanisms by incorporating new data on pika extirpations outside of the Great Basin, and 4) evaluate contributions of microhabitat variables to habitat and connectivity maps for pikas. Results of this study will increase understanding of pika responses to climate change, inform conservation strategies, and provide map products widely applicable to many research areas including wildlife ecology, plant ecology, geomorphology, hazard assessment, and hydrology.





Location: First Floor Conference Room "Madison Room"- NOROCK, 2327 University Way, Suite 2
(Click HERE for directions)

Webinar Info:

If you can not attend in person, you can still listen and watch from afar!

Link: Please access https://usgs.webex.com/ and search for (5) NOROCK EcoLunch. Note, you will be asked to install the latest version of Java.

Teleconference: 760-569-0111
Access code: 294333#


Upcoming Speakers:

March 3rd - Aaron Johnston, USGS Mendenhall
March 17th - Will Thompson, MSU Dept. of Ecology
March 31st - Erin Clark & Lisa Macki, Ecology Project International
April 14th - Jeff Kershner, USGS
April 28th - Greg Pederson, USGS
May 12th - Interagency Grizzly Bear Study Team
May 26 - Tabitha Graves, USGS





2015

January 6th: Joel Smith - Understanding climate change impacts on huckleberries. l Stream Webinar l

January 20th: George Pess - The effect of salmon colonization on ecosystem patterns and processes. l Available upon request. l

February 3rd: George Pess - Is pathogen invasion and persistence associated with a shift in bighorn sheep vital rates, age structure, and stochastic population growth rate? A case study from Hells Canyon. l Available upon request. l

February 17th: Dr. Gordon Luikart - The Expanding Role of Genomics in Wildlife Research and Conservation. l Available upon request. l



View Seminar Archives


USGS EcoLunch is a forum for students, researchers, visiting scientists and collaborators in the environmental sciences to present their current and past work. Presentations will range from brown bag discussions of ongoing projects to more formal and polished seminar presentations.