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Miguel B. Araújo Lab

Predicting the effects of environmental change on biodiversity

You are here: Home / Research Highlights / The effect of multiple biotic interaction types on species persistence

The effect of multiple biotic interaction types on species persistence

  • Ecology (2018 )
  • Authors: David García‐Callejas Roberto Molowny‐Horas & Miguel B. Araújo
  • Link to article: http://macroecointern.dk/pdf-reprints/Garc%EDa-Callejas_Ecology_2018.pdf

No species can persist in isolation from other species, but how biotic interactions affect species persistence is still a matter of inquiry. Is persistence more likely in communities with higher proportion of competing species, or in communities with more positive interactions? How do different components of community structure mediate this relationship? We address these questions using a novel simulation framework that generates realistic communities with varying numbers of species and different proportions of biotic interaction types within and across trophic levels. We show that when communities have fewer species, persistence is more likely if positive interactions—such as mutualism and commensalism—are prevalent. In species‐rich communities, the disproportionate effect of positive interactions on persistence is diluted and different combinations of biotic interaction types can coexist without affecting persistence significantly. We present the first theoretical examination of how multiple‐interaction networks with varying architectures relate to local species persistence, and provide insight about the underlying causes of stability in communities.

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News

  • The Grand Jury of the Gulbenkian Prize for Humanity Meets in Berlin
  • L’Oréal UNESCO Award For Women in Science
  • Position available: Researcher in NaturaConnect
  • Miguel Araújo appointed Chair of one of 4 Scientific Councils of FCT
  • Position available: PhD candidate in Community Ecology and Systematic Conservation Planning

Outreach

  • Além Risk (Beyond Risk) on RTP
  • 50 years of protected areas in Portugal
  • 200 anniversary of Alfred Russel Wallace
  • Além Risco (Beyond Risk) project
  • Is the planet full? TV programme

Opportunities

  • Position available: Researcher in NaturaConnect
  • Position available: PhD candidate in Community Ecology and Systematic Conservation Planning
  • La Caixa PhD studentship
  • Position available: Technician
  • Call for access to Iberian Pond data (2022)

Research Highlights

Human disturbances affect the topology of food webs

Biogeography of bird and mammal trophic structures

Strategy games to improve environmental policymaking

Response of an Afro-Palearctic bird migrant to glaciation cycles

Improvements in reports of species redistribution under climate change are required

Books

Biodiversidade 2030

Biodiversidade 2030

Ecological Niches and Geographic Distributions

Ecological Niches and Geographic Distributions

Spatial Conservation Prioritization

Spatial Conservation Prioritization

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