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Divergent trophic responses to biogeographic and environmental gradients

Matias, Miguel G. et al.

Oikos: a journal of ecology. Volume 126:Issue 1 (2017); pp 101-110 -- John Wiley & Sons Ltd

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  • Title:
    Divergent trophic responses to biogeographic and environmental gradients
  • Author: Matias, Miguel G.;
    Pereira, Cátia Lúcio;
    Raposeiro, Pedro Miguel;
    Gonçalves, Vítor;
    Cruz, Ana Mafalda;
    Costa, Ana Cristina;
    Araújo, Miguel Bastos
  • Found In: Oikos: a journal of ecology. Volume 126:Issue 1 (2017); pp 101-110
  • Journal Title: Oikos: a journal of ecology
  • Subjects: Ecology--Periodicals; Dewey: 570
  • Rights: legaldeposit
  • Publication Details: John Wiley & Sons Ltd
  • Abstract: Abstract :

    Following environmental changes, communities disassemble and reassemble in seemingly unpredictable ways. Whether species respond to such changes individualistically or collectively (e.g. as functional groups) is still unclear. To address this question, we used an extensive new dataset for the lake communities in the Azores' archipelago to test whether: 1) individual species respond concordantly within trophic groups; 2) trophic groups respond concordantly to biogeographic and environmental gradients. Spatial concordance in individual species distributions within trophic groups was always greater than expected by chance. In contrast, trophic groups varied non‐concordantly along biogeographic and environmental gradients revealing idiosyncratic responses to them. Whether communities respond individualistically to environmental gradients thus depends on the functional resolution of the data. Our study challenges the view that modelling environmental change effects on biodiversity always requires an individualist approach. Instead, it finds support for the longstanding idea that communities might be modelled as a cohort if the functional resolution is appropriate.


  • Identifier: System Number: LDEAvdc_100041130411.0x000001; Journal ISSN: 0030-1299; 10.1111/oik.02604
  • Publication Date: 2017
  • Physical Description: Electronic
  • Shelfmark(s): ELD Digital store

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