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Miguel B. Araújo Lab

Predicting the effects of environmental change on biodiversity

You are here: Home / Research Highlights / The marine fish food web is globally connected

The marine fish food web is globally connected

  • Nature Ecology and Evolution (2019 )
  • Authors: Camille Albouy, Philippe Archambault, Ward Appeltans, Miguel B. Araújo, David Beauchesne, Kevin Cazelles, Alyssa R. Cirtwill, Marie-Josée Fortin, Nuria Galiana, Shawn J. Leroux, Loïc Pellissier, Timothée Poisot, Daniel B. Stouffer, Spencer A. Wood & Dominique Gravel
  • Link to article: http://www.stoufferlab.org/pdfs/Albouy-2019-Nature.Ecol.Evol-3-1153.pdf

The productivity of marine ecosystems and the services they provide to humans are largely dependent on complex interactions between prey and predators. These are embedded in a diverse network of trophic interactions, resulting in a cascade of events following perturbations such as species extinction. The sheer scale of oceans, however, precludes the characterization of marine feeding networks through de novo sampling. This effort ought instead to rely on a combination of extensive data and inference. Here we investigate how the distribution of trophic interactions at the global scale shapes the marine fish food web structure. We hypothesize that the heterogeneous distribution of species ranges in biogeographic regions should concentrate interactions in the warmest areas and within species groups. We find that the inferred global metaweb of marine fish—that is, all possible potential feeding links between co-occurring species—is highly connected geographically with a low degree of spatial modularity. Metrics of network structure correlate with sea surface temperature and tend to peak towards the tropics. In contrast to open-water communities, coastal food webs have greater interaction redundancy, which may confer robustness to species extinction. Our results suggest that marine ecosystems are connected yet display some resistance to perturbations because of high robustness at most locations.

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News

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Outreach

  • From science to climate change adaptation action
  • Interview of Miguel Araújo in Amorim News
  • Improvements in reports of species redistribution under climate change required
  • Miguel B. Araujo Lab - Resumo de investigação passada e reflexão sobre investigação futura
  • The future of coastlands in the era of mega hurricanes

Opportunities

  • First call AQUACOSM-PLUS
  • La Caixa Foundation PhD studentship on climate change and protected areas
  • Two Post docs: Ecology & Conservation
  • Post-doc: Effects of climate change extremes on Caribbean biodiversity
  • Post doc - Modelling the effects of climate change extremes on Caribbean biodiversity

Research Highlights

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

The evolution of critical thermal limits of life on Earth

Books

Ecological Niches and Geographic Distributions

Ecological Niches and Geographic Distributions

Atlas of Biodiversity Risk

Atlas of Biodiversity Risk

Spatial Conservation Prioritization

Spatial Conservation Prioritization

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