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The dimensionality of ecological networks
Department of Ecology & Evolution, University of Chicago, Chicago, IL,USA.
Institute for Hydrobiology and Fisheries Science, Hamburg, Germany.
Department of Ecology & Evolution, University of Chicago, Chicago, IL,USA.
CREAF – Ecology Unit, Universitat Autonoma de Barcelona, Barcelona, Spain.
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2013 (Engelska)Ingår i: Ecology Letters, ISSN 1461-023X, E-ISSN 1461-0248, Vol. 16, nr 5, s. 577-583Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

How many dimensions (trait-axes) are required to predict whether two species interact? This unansweredquestion originated with the idea of ecological niches, and yet bears relevance today for understanding whatdetermines network structure. Here, we analyse a set of 200 ecological networks, including food webs,antagonistic and mutualistic networks, and find that the number of dimensions needed to completelyexplain all interactions is small ( < 10), with model selection favouring less than five. Using 18 high-qualitywebs including several species traits, we identify which traits contribute the most to explaining networkstructure. We show that accounting for a few traits dramatically improves our understanding of the structureof ecological networks. Matching traits for resources and consumers, for example, fruit size and billgape, are the most successful combinations. These results link ecologically important species attributes tolarge-scale community structure.

Ort, förlag, år, upplaga, sidor
Blackwell Publishing, 2013. Vol. 16, nr 5, s. 577-583
Nyckelord [en]
Ecological networks, food web structure, intervality, niche space, species traits, scaling.
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:liu:diva-89672DOI: 10.1111/ele.12081ISI: 000318077200002OAI: oai:DiVA.org:liu-89672DiVA, id: diva2:608763
Tillgänglig från: 2013-03-01 Skapad: 2013-03-01 Senast uppdaterad: 2017-04-20

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Eklöf, Anna

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