High temporal variability in the occurrence of consumer–resource interactions in ecological networks

Daniela N. López; PATRICIO A. CAMUS; Nelson Valdivia; Sergio A. Estay

doi:10.1111/oik.04285

journal article Jun 08, 2017

High temporal variability in the occurrence of consumer–resource interactions in ecological networks

Daniela N. López PATRICIO A. CAMUS Nelson Valdivia

Sergio A. Estay

Oikos Vol. 126 No. 12 pp. 1699-1707 · Wiley

View at Publisher Save 10.1111/oik.04285

Abstract

Ecological networks have been used to represent interactions between species as fixed linkages despite that populations naturally oscillate over time and space. As such, the influence of the persistence of linkages between species in communities has been overlooked. Unfortunately, empirical analysis of the temporal variation of trophic networks is constrained by the lack of data with high spatial, temporal and taxonomic resolution. Here, we evaluate the spatiotemporal variability of multiple consumer– resource interactions to quantify the relative dominance of highly persistent versus poorly persistent interactions, the commonness of the interaction persistence patterns, and the effect of biotic and abiotic conditions on these patterns. We took advantage of a dataset from four large marine intertidal rocky‐shore networks monitored seasonally for three years along 1000 km of the coast of northern Chile. Our results showed that the communities were characterized by few persistent interactions and a large number of transient trophic interactions, which was well described by a common exponential decay in the rank‐frequency relationship of consumer–resource interactions despite dissimilarities in environmental conditions among sites. These results were independent of the degree of consumer–resource co‐occurrence. Our results stress the need for more long‐term studies that evaluate the temporal variability of ecological networks.

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Details

Published: Jun 08, 2017
Vol/Issue: 126(12)
Pages: 1699-1707
License: View

Authors

D

Daniela N. López

Inst. de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Univ. Austral de Chile Valdivia Chile; Programa de Doctorado en Ciencias mención Ecología y Evolución, Facultad de Ciencias, Univ. Austral de Chile Valdivia

P

PATRICIO A. CAMUS

Depto de Ecología, Facultad de Ciencias, Univ. Católica de la Santísima Concepción Concepción Chile; Centro de Investigación en Biodiversidad y Ambientes Sustentables (CIBAS), Univ. Católica de la Santísima Concepción Concepción Chile

N

Nelson Valdivia

Inst. de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Univ. Austral de Chile Valdivia Chile; Centro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Univ. Austral de Chile Valdivia Chile

S

Sergio A. Estay

Inst. de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Univ. Austral de Chile Valdivia Chile; Center of Applied Ecology and Sustainability, Pontificia Univ. Católica de Chile Santiago Chile

Cite This Article

Daniela N. López, PATRICIO A. CAMUS, Nelson Valdivia, et al. (2017). High temporal variability in the occurrence of consumer–resource interactions in ecological networks. Oikos, 126(12), 1699-1707. https://doi.org/10.1111/oik.04285

High temporal variability in the occurrence of consumer–resource interactions in ecological networks

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