Predicting the effect of habitat modification on networks of interacting species

Staniczenko, Phillip P. A., Lewis, Owen T., Tylianakis, Jason, Albrecht, Matthias, Coudrain, Valerie, Klein, Alexandra-Maria and Reed-Tsochas, Felix (2017) Predicting the effect of habitat modification on networks of interacting species. Nature Communications, 8 (792).

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A pressing challenge for ecologists is predicting how human-driven environmental changes will affect the complex pattern of interactions among species in a community. Weighted networks are an important tool for studying changes in interspecific interactions because they record interaction frequencies in addition to presence or absence at a field site. Here we show that changes in weighted network structure following habitat modification are, in principle, predictable. Our approach combines field data with mathematical models: the models separate changes in relative species abundance from changes in interaction preferences (which describe how interaction frequencies deviate from random encounters). The models with the best predictive ability compared to data requirement are those that capture systematic changes in interaction preferences between different habitat types. Our results suggest a viable approach for predicting the consequences of rapid environmental change for the structure of complex ecological networks, even in the absence of detailed, system-specific empirical data.

Item Type: Article
Keywords: Ecological modellling, Ecological networks, Food webs, Theoretical ecology, Complexity, Complex systems
Subject(s): Complexity
Centre: CABDyN Complexity Centre
Date Deposited: 17 Oct 2017 14:04
Date of author-version deposit: 2017
Last Modified: 07 Nov 2018 15:42
Funders: N/A

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