3 posts · 866 views
I'm a PhD student in evolutionary ecology in Montpellier. My work is focused on understanding how environmental changes will impact coevolutionary systems.
Timothée Poisot
3 posts
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- October 20, 2010
- 02:29 PM
- 249 views
Wild, Wild Webs – the impact of artificial changes of productivity on a natural bipartite network
by Timothée Poisot in Timothée Poisot
While we know that food webs are structured in nature, information about how their structure is influenced by environmental conditions is scarce. Given that network structure is associated with more applied properties, such as resilience (Dunne et al. 2002a; Dunne et al. 2002b) and vulnerability to extinction (Memmott et al. 2004), an important research goal is to characterize how environmental changes can affect these properties. In an article published today in Biology Letters, we show how resource availability (a proxy for patch productivity) affects different structural features of a bacteria–bacteriophage bipartite network.... Read more »
Timothée Poisot, Gildas Lepennetier, Esteban Martinez, Johan Ramsayer, & Michael E Hochberg. (2010) Resource availability affects the structure of a natural bacteria–bacteriophage community. Biology Letters. info:/
- September 1, 2010
- 09:51 AM
- 355 views
Millipedes and mites do not cospeciate. But do they coevolve?
by Timothée Poisot in Timothée Poisot
Coevolution is a really cool evolutionary process in which a genetically driven change in the phenotype of one species is responsible for a change in the evolutionary pressures on a second species. The term was coined in the 1960s, and the concept (formalized by Janzen in 1980) is receiving an increasing interest ever since. One [...]... Read more »
James W Demastes, & Mark Hafner. (1993) Cospeciation of Pocket Gophers (Geomys) and Their Chewing Lice (Geomydoecus) . Journal of Mammalogy, 74(3). DOI: 10.2307/1382271
Yves Desdevises, Serge Morand, Olivier Jousson, & Pierre Legendre. (2002) Coevolution between Lamellodiscus (Monogenea: Diplectanidae) and Sparidae (Teleostei): The Study Of a Complex Host-Parasite System. Evolution, 14(12). DOI: 10.1111/j.0014-3820.2002.tb00171.x
Janzen, Daniel H. (1980) When is it Coevolution?. Evolution, 34(3). DOI: 10.2307/2408229
Strauss SY, Sahli H, & Conner JK. (2005) Toward a more trait-centered approach to diffuse (co)evolution. The New phytologist, 165(1), 81-89. PMID: 15720623
Lynn Swafford, & Jason E Bond. (2010) Failure to cospeciate: an unsorted tale of millipedes and mites. Biological Journal of the Linnean Society. info:/10.1111/j.1095-8312.2010.01499.x
John N Thompson. (2010) Four Central Points About Coevolution. Evolution: Education and Outreach, 57(1). DOI: 10.1007/s12052-009-0200-x
- August 30, 2010
- 06:18 AM
- 262 views
Bipartite networks: from description to prediction
by Timothée Poisot in Timothée Poisot
Food webs, since introduced by Elton in 1927, have proven to be useful descriptors of ecological communities, and have generated an impressive amount of theory and data (see e.g. the PEaCE Lab or the IWDB). In their simplest expression, food webs are visualized as a matrix with one population (e.g. the preys) as rows and [...]... Read more »
Bersier, L., Banašek-Richter, C., & Cattin, M. (2002) QUANTITATIVE DESCRIPTORS OF FOOD-WEB MATRICES. Ecology, 83(9), 2394-2407. DOI: 10.2307/3071801
Blüthgen N, Menzel F, & Blüthgen N. (2006) Measuring specialization in species interaction networks. BMC ecology, 9. PMID: 16907983
Ayco J. M. Tack, Sofia Gripenberg, & Tomas Roslin. (2010) Can we predict indirect interactions from quantitative food webs? – an experimental approach. Journal of Animal Ecology. info:/10.1111/j.1365-2656.2010.01744.x
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