A capture-recapture model for exploring multi-species synchrony in survival

Lahoz-Monfort, Jose J.; Morgan, Byron J. T.; Harris, Michael P.; Wanless, Sarah; Freeman, Stephen N.. 2011 A capture-recapture model for exploring multi-species synchrony in survival. Methods in Ecology and Evolution, 2 (1). 116-124.

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1. Although recent decades have seen much development of statistical methods to estimate demographical parameters such as reproduction, and survival and migration probabilities, the focus is usually the estimation of parameters for individual species. This is despite the fact that several species may live in close proximity, sometimes competing for the same resources. There is therefore a great need for new methods that enable a better integration of demographical data, e.g. the study of synchrony between sympatric species, which are subject to common environmental stochasticity and potentially similar biotic interactions. 2. We propose a mark–recapture statistical model that uses random effect terms for studying synchrony in a demographical parameter at a multi-species level, adapting a framework initially developed to study multi-site synchrony to this novel situation. The model allows us to divide between-year variance in a demographical parameter into a ‘synchronous’ component, common to all species considered, and species-specific ‘asynchronous’ components, as well as to estimate the proportion of each component accounted for by environmental covariates. 3. We demonstrate the method with data from three colonially breeding auk species that share resources during the breeding season at the Isle of May, Scotland. Mark-resight information has been collected since 1984 for Atlantic puffins Fratercula arctica, common guillemots Uria aalge and razorbills Alca torda marked as breeding adults. We explore the relationship between synchrony in the species’ survival and two environmental covariates. 4. Most of the between-year variation was synchronous to the three species, and the same environmental covariates acted simultaneously as synchronising and desynchronising agents of adult survival, possibly through different indirect causation paths. 5. Synthesis and applications. The model proposed allows the investigation of multi-species synchrony and asynchrony in adult survival, as well as the role of environmental covariates in generating them. It provides insight into whether sympatric species respond similarly or differently to changes in their environment, and helps to disentangle the sources of these differences. The estimated indices of synchrony/asynchrony can facilitate the generation of further hypotheses about similarities/differences in these species’ ecology, such as the potential overlap of wintering areas. The method is readily applicable to other species, ecosystems and demographical parameters

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Topics & Objectives 2009 - 2012 > Biodiversity > BD Topic 1 - Observations, Patterns, and Predictions for Biodiversity > BD - 1.4 - Quantify and model interactions to determine impacts ...
CEH Topics & Objectives 2009 - 2012 > Biodiversity > BD Topic 1 - Observations, Patterns, and Predictions for Biodiversity > BD - 1.3 - Long-term/large-scale monitoring and experiments ...
UKCEH and CEH Sections/Science Areas: Watt
UKCEH Fellows
ISSN: 2041-210X
Additional Keywords: adult survival, Atlantic puffin, Bayesian models, common guillemot, environmental covariates, interspecific synchronisation, partition of variance, random effects, razorbill, WinBUGS
NORA Subject Terms: Marine Sciences
Ecology and Environment
Date made live: 24 Feb 2011 10:42 +0 (UTC)

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