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Raquel Ribeiro Miguel A. Carretero Neftalí Sillero Gonzalo Alarcos Manuel Ortiz-Santaliestra Miguel Lizana Gustavo A. Llorente 《Landscape Ecology》2011,26(5):673-682
Landscape connectivity is a very recurrent theme in landscape ecology as it is considered pivotal for the long term conservation
of any organism’s populations. Nevertheless, this complex concept is still surrounded by uncertainty and confusion, largely
due to the separation between structural and functional connectivity. Amphibians are the most threatened vertebrates around
the globe, in Europe mostly due to habitat alteration, and to their particular life cycle. Pond breeding amphibians are considered
to be organised in metapopulations, enhancing the importance of landscape connectivity in this group of animals. We sampled
the amphibian species present in two pond groups in Central Western Spain. We applied the graph theory framework to these
two pond networks in order to determine the importance of each pond for the entire network connectivity. We related the pond
importance for connectivity with the species richness present in each pond. We tested if connectivity (partially) determined
the presence of the amphibian species sampled using logistic regression. The results show that the structural connectivity
of the pond network impacts on the amphibian species richness pattern and that the importance of the pond for the connectivity
of the network is an important factor for the presence of some species. Our results, hence, attest the importance of (structural)
landscape connectivity determining the pattern of amphibian (functional) colonization in discrete ponds. 相似文献
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