sCaleWebs – Unifying environmental and spatial determinants of food web structure across spatial scales

1st meeting: 10.-14.12.2018

PIs: Gustavo Q Romero, Diane S Srivastava

Species affect on each other in complex ways, and ecological networks – such as food webs – describe how interactions connect species. Although ecological network theory has allowed predictions of how perturbations ricochet between species, it remains limited in several key respects. First, ecological networks are often only considered at small spatial scales, even though metacommunity theory has demonstrated that longer-distance events (like dispersal) or larger-scale patterns (like climatic of biogeographic gradients) can have large impacts on local ecological dynamics. Second, there is accumulating evidence that the traits of species provide such mechanistic basis for species interactions, but most traits have not yet been incorporated into network analyses. Here we propose to integrate network, metacommunity and trait-based analyses of food webs to determine: (1) which traits of species are most important in determining their trophic interactions, (2) if species traits determine shifts in food web structure over environmental gradients, and (3) how and why does food web structure changes over space. We will address these questions using the aquatic food webs in tank bromeliads across the entire range of this system, from Mexico to Argentina and through the Caribbean. The current database is comprised of 1762 tank bromeliads and their associated macrofauna at 22 locations distributed in 10 countries.  We will combine this existing species, trait and environmental data with new site-specific interaction matrices to generate potential food webs. We anticipate that the integrated and multiscale approach of this project will be crucial providing novel perspectives on the ecology of complex systems.

Participants:

Ignacio Barberis (Universidad Nacional de Rosario); Ulrich Brose (iDiv); Regis Cereghino (University Toulouse Paul Sabatier); Juliana da Silva Leal (Universidade Federal do Rio de Janeiro); Olivier Dézerald (Université de Lorraine): Vinicius Farjalla (Universidade Federal do Rio de Janeiro); Angélica González (Rutgers University); Andrew MacDonald (Université de Montreal); Nicholas Marino (Universidade Federal do Rio de Janeiro); Mathias Mistretta Pires (University of Campinas) ; Paula Munhoz de Omena (Universidade Estadual de Campinas); Eoin O'Gorman (Imperial College London); Jana Petermann (University of Salzburg); Gustavo Romero (State University of Campinas); Diane Srivastava (University of British Columbia)

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2nd meeting: 2.-6.12.2019

Participants:
Pablo Antiqueira (University of Campinas - UNICAMP) ; Ulrich Brose (iDiv) ; Regis Cereghino (EcoLab, University Paul Sabatier Toulouse) (Olivier Dézerald UMR ESE, Ecology and Ecosytem Health, INRA, Agrocampus Ouest) ; Benoit Gauzens (iDiv) ; Angelica Gonzalez (Rutgers University) ; Pavel Kratina (Queen Mary University of London) ; Eoin O'Gorman (University of Essex) ; Jana Petermann (University of Salzburg) ; Pierre Rogy (University of British Columbia) ; Gustavo Romero (State University of Campinas) ; Diane Srivastava (University of Britsh Columbia) ; Colette Ward (Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada)

Remote participants: Andrew MacDonald (Université de Montreal) ; Melissa Guzman (Simon Fraser University)

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3rd meeting: 30.11. - 04.12.2020

 

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