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NIMBioS Tuesday Seminar Series

Species montage. In conjunction with the interdisciplinary activities of the National Institute for Mathematical and Biological Synthesis (NIMBioS), a seminar series on topics in mathematical biology will be hosted at NIMBioS every other Tuesday at 3:30 p.m. (unless otherwise noted) in Hallam Auditorium, Room 206, Claxton Building, 1122 Volunteer Blvd. Seminar speakers will focus on their research initiatives at the interface of mathematics and many areas of the life sciences. Light refreshments will be served in Room 206 beginning 30 minutes before each talk. Faculty and students from across the UT community are welcome to join us. The schedule will be supplemented as additional speakers are added.

Video Archive of NIMBioS Seminars
Archived Seminar Calendars:   2018   2017   2016   2015   2014   2013   2012   2011   2010   2009

Date Speaker Topic
  September 2018
Sep 4
Tuesday
Shandelle M. Henson, Mathematics, Biology, Andrews Univ., Berrien Springs, MI; Editor-in-Chief, Natural Resource Modeling Climate change and tipping points for seabird colonies in the Pacific Northwest
Sep 18
Tuesday
Luc Doyen, Director of Research CNRS, GREThA, Univ. of Bordeaux, France Tragedy of open ecosystems
  October 2018
Oct 2
Tuesday
John Jungck, Biological Sciences, Univ. of Delaware TBA

Seminar Abstracts


L. Doyen photo. Time/Date: 3:30 p.m. Tuesday, September 18
Location: Hallam Auditorium, Room 206, Claxton Building, 1122 Volunteer Blvd.
Speaker: Luc Doyen, Director of Research CNRS, GREThA, Univ. of Bordeaux, France
Topic: Tragedy of Open Ecosystems
Abstract: This presentation investigates the role played by cooperation for the sustainable harvesting of an ecosystem. To achieve this, a bio-economic model based on multi-species dynamics with interspecific relationships and multi-agent catches is considered. A comparison between the non-cooperative and cooperative optimal strategies is carried out. Revisiting the Tragedy of Open Access and over-exploitation issues, it is first proved analytically how harvesting pressure is larger in the non-cooperative case for every species. Then it is examined to what extent gains from cooperation can also be derived for the state of the ecosystem. It turns out that cooperation clearly promotes the conservation of every species when the number of agents is high. When the number of agents remains limited, results are more complicated, especially if a species-by-species viewpoint is adopted. However, we identify two metrics involving the state of every species and accounting for their ecological interactions which exhibit gains from cooperation at the ecosystem scale in the general case. Numerical examples illustrate the mathematical findings. Click here for more information.

S. Henson photo. Time/Date: 3:30 p.m. Tuesday, September 4
Location: Hallam Auditorium, Room 206, Claxton Building, 1122 Volunteer Blvd.
Speaker: Shandelle M. Henson, Mathematics, Biology, Andrews Univ., Berrien Springs, MI; Editor-in-Chief, Natural Resource Modeling
Topic: Climate change and tipping points for seabird colonies in the Pacific Northwest
Abstract: Changes in sea surface temperatures in the Pacific Northwest are associated with changes in reproductive and feeding tactics in colonial seabirds. Warm years in the El Niño–Southern Oscillation are associated with short-term "lifeboat" tactics such as egg cannibalism that are not sustainable over the long term. Mathematical models suggest that prolonged rises in sea surface temperature can create tipping points that allow colony collapse. Click here for more information.



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NSF logo. NIMBioS is supported by the National Science Foundation through NSF Award #DBI-1300426, with additional support from The University of Tennessee, Knoxville. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
 
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