Theoretical Ecology Lab Tea

The Theoretical Ecology Lab Teas are informal meetings where members of affiliated lab groups give talks on their current research and receive feedback from their audience. Talks are 30 minutes long and are followed by questions and discussion.

Lab Tea typically meets Wednesdays at 12:30 pm during the fall and spring semesters. All talks this semester will be held in Eno 209 unless otherwise stated.

For the spring semester of 2018, the talk schedules and email lists will be maintained by Samuel Cho and Chadi Saad-Roy. Please contact Samuel or Chadi to have your name added to the Lab Tea email list so that you can receive reminders about upcoming meetings.

Spring 2018 schedule

Click on an event to view the talk title and abstract

Date and time Speaker
Ricardo Martinez
Jobst Heitzig
Daniel Cooney
Vitor Vasconcelos / Wenying Liao
Jaime Lopez
Theresa Ong
Jude Kong
Fernando Rossine
Spring Break
George Hagstrom
Mari Kawakatsu
Nicolas Choquette-Levy
Luojun Yang
Christopher Tokita
Kairui Feng

Note: Priority is given to graduate students. A symbol next to the speaker's name means that approval is pending for a week and graduate students can still claim the slot.

Titles and abstracts

Biological self-organization across spatiotemporal scalesRicardo Martinez

Self-organization is a ubiquitous phenomenon in nature, underlying the emergence of population-level patterns out from individual-level interactions in complex biological systems. Instances can be found at any spatiotemporal scale, from microbial communities and tissue organization to collective animal behavior to landscape patterning. Remarkably, despite the large variety of systems driven by self-organized processes, the diversity of shapes found in the emergent patterns is strikingly low. In this context, the question naturally arises as to how seemingly identical patterns can emerge in different scenarios and from completely different interactions. One hypothesis is that all these self-organized systems could be governed, to some extent, by the same set principles. Driven by this possibility, I will discuss my work on the development of a theoretical framework that encompasses different driving forces of spatial self-organization, both in motile and sessile organisms and on several spatiotemporal scales. In particular, I will focus on self-organized cell aggregation in Dictyostelium discoideum, emphasizing on the impact that an imperfectly synchronized self-organized collective behavior has on the biodiversity of this species.

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The copan:CORE framework: from World-Earth modeling to theoretical ecology?Jobst Heitzig

I'll present a modular modeling framework recently developed at PIK for studying the planetary social ecology, involving feedback loops between biophysical, socio-metabolic, and socio-cultural processes, by means of ''World-Earth'' models. It allows to combine macroscopic and microscopic equation-based model components in discrete and/or continuous time with agent-based components at various levels of aggregation (individual, spatial grid cell, social system, planet, etc.). After speculating how it might also be used in theoretical ecology, I'll hope to engage in a lively discussion about the relationship between these fields of research. Ref.: Heitzig, Donges et al., ESDD 2018, https://doi.org/10.5194/esd-2017-126

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Evolutionary Games in MetapopulationsDaniel Cooney

We consider two models for evolutionary games in group-structured populations. In the first model, we consider a two-level Moran process for the Prisoner's Dilemma in which within-group selection favors defectors and between group-selection favors cooperation. In the second model, we explore a coordination game to explore the balance between the individual incentive to coordinate with group members and the group-level incentive for groups to coordinate on an efficient strategy.

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Envisioning future food system under climatic riskVitor Vasconcelos / Wenying Liao

Prediction suggests that global food production must double to satisfy the increasing demand of world population by 2050. Yield enhancement relies heavily on the use of nitrogen fertilizer. However, excess nitrogen fertilizer input results in diminishing return of crop yield and increased environmental pollution. In addition, the predicted increase in future climatic risk will likely further incentivize countries to increase nitrogen fertilizer use, to sustain food security. Can we design a food system that both sustains food security and reduces global nitrogen pollution? Here, in this preliminary work, we explore the utility of a central food bank, where countries voluntarily enter by paying a fixed cost. If climatic disaster affects the yield of one member country, its food production is compensated by the bank.

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TBAJaime Lopez

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TBATheresa Ong

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TBAJude Kong

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Fernando Rossine

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TBASpring Break

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TBAGeorge Hagstrom

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TBAMari Kawakatsu

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TBANicolas Choquette-Levy

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TBALuojun Yang

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TBAChristopher Tokita

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TBAKairui Feng

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Links to previous schedules

  1. Fall 2000
  2. Spring 2001
  3. Fall 2001
  4. Spring 2002
  5. Fall 2002
  6. Spring 2003
  7. Fall 2003
  8. Spring 2004
  9. Fall 2004
  10. Spring 2005
  11. Fall 2005
  12. Spring 2007
  13. Fall 2007
  14. Spring 2008
  15. Fall 2008
  16. Spring 2009
  17. Fall 2009
  18. Spring 2010
  19. Fall 2010
  20. Spring 2011
  21. Fall 2011
  22. Spring 2012
  23. Fall 2012
  24. Spring 2013
  25. Fall 2013
  26. Spring 2014
  27. Fall 2014
  28. Spring 2015
  29. Fall 2015
  30. Spring 2016
  31. Fall 2016
  32. Spring 2017
  33. Fall 2017