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Intra-guild interactions and projected impact of climate and land use changes on North American pochard ducks
Oecologia (2013)
  • Guillaume Peron
  • David N. Koons, Utah State University
Abstract
The co-occurrence of functionally similar species is very common in nature, and is often put forward as a basis for ecosystem resilience to disturbance. At the same time, competition between similar species is also considered a strong driver of community composition. However, environmental stochasticity can alter this prediction, either because competitive abilities depend on time-varying factors or because covariance in species’ responses to environmental conditions masks the effect of competition. Interactions other than competition can also influence community dynamics but have received less attention. We used a simplified community of two sympatric duck species (redhead Aythya americana and canvasback A. valisineria) and a previously published analysis of 50 years of demographic data to parameterize a stochastic, density-dependent, stage-structured model.
Disciplines
Publication Date
August, 2013
Citation Information
Guillaume Peron and David N. Koons. "Intra-guild interactions and projected impact of climate and land use changes on North American pochard ducks" Oecologia Vol. 172 Iss. 4 (2013)
Available at: http://works.bepress.com/david_koons/65/