Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8876688 | Journal of Theoretical Biology | 2018 | 10 Pages |
Abstract
Food webs dynamically react to perturbations and it is an open question how additive are the effects of single-species perturbations. Network structure may have topological constraints on additivity and this influences community response. Better understanding the relationships between single-species and multi-species perturbations can be useful for systems-based conservation management. Here we study a single model food web by (1) characterising the positional importance of its nodes, (2) building a dynamical network simulation model and performing sensitivity analysis on it, (3) determining community response to each possible single-species perturbation, (4) determining community response to each possible pairwise species perturbation and (5) quantifying the additivity of effects for particular types of species pairs. We found that perturbing pairs of species that are either competitors or have high net status values in the network is less additive: their combined effect is dampened.
Related Topics
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Agricultural and Biological Sciences
Agricultural and Biological Sciences (General)
Authors
Ágnes Móréh, Anett Endrédi, Ferenc Jordán,