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The influence of spatial and temporal discontinuities of forest habitats on the current presence of flightless saproxylic beetles

Cateau, Eugénie and Herrault, Pierre-Alexis and Sheeren, David and Ladet, Sylvie and Brustel, Hervé The influence of spatial and temporal discontinuities of forest habitats on the current presence of flightless saproxylic beetles. (2018) PLoS ONE, 13 (5). 1-15. ISSN 1932-6203

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Official URL: http://doi.org/10.1371/journal.pone.0197847

Abstract

Flightless saproxylic beetles were selected in order to study the impact of temporal and spatial discontinuity of forests. They were chosen because: (1) they are unable to fly, making them dispersal-limited species, (2) they have a saproxylic diet, which means they are closely linked to the forest, and (3), they have rarely been studied. Forest temporal continuity was expected to be the main factor explaining the presence of these species, modulated by the past and present amount of forest in the surrounding landscape. Twenty-seven forests, distributed into three zones, were sampled in southwestern France. Flightless saproxylic beetles were surveyed using a Winkler extractor and a Berlese funnel. Their presence/absence were modelled using generalised linear mixed models, with zone variable as random effect. Two species showed significant zone effect and were only or more present in the zone with the highest present forest amount in a 0.5 km radius. In the model that converged, the only selected variable was the past amount of forest in the landscape. The size of the forest, the presence of dead wood and the forest temporal continuity were not included in this model. The importance of the amount of forest in the landscape supports the hypothesis that dispersal-limited species are affected by landscape characteristics. This study demonstrates an important link between the presence of Dienerella clathrata and the amount of forest in the past, which led to an indicator species analysis being performed.

Item Type:Article
Additional Information:http://journals.plos.org/plosone/
HAL Id:hal-01834389
ProdINRA Id:429688
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
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Deposited On:10 Jul 2018 13:06

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