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Dead wood attributes as biodiversity indicators in plantation forests

Abstract : Dead wood, a major component of natural forests, is necessary for ecosystem functioning and stands for an habitat for a large part of forest biodiversity. It is considered as a potential indicator of sustainable forest management. Despite this stake we lack information about dead wood and associated organisms especially in France and in plantation forests. The main objectives of our study were: i) to quantify dead wood parameters at the stand scale in different stand types of pine plantations ; ii) to compare saproxylic beetle assemblages between these different stand types ; iii) to identify the relation between the local dead wood attributes and the diversity and composition of beetle assemblages. Saproxylic beetles were sampled by window flight traps in 41 plots arranged in a systematic square sampling grid, 64 km² in area in the Landes region. Down woody debris (diameter above 1cm), standing dead trees and stumps were recorded in each plot using a standard protocol. The average volume of down dead wood was about 14.5 m3 and was strongly dominated by fine woody debris (diameter below 5 cm), representing 8.4 m3. 3918 saproxylic beetles, belonging to 37 families and 127 species were collected. Preliminary results showed that the abundance of saproxylic beetles and the volume of dead wood present the same trend along the stand succession. The age and the volume of large woody debris (diameter above 15 cm) were the most significant predictors of the beetle species richness. Results are discussed to define relevant practices of dead wood retention in favour of saproxylic diversity in plantation forests.
Mots-clés : FRANCE LANDES
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Conference papers
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https://hal.inrae.fr/hal-02588789
Contributor : Migration Irstea Publications <>
Submitted on : Friday, May 15, 2020 - 12:58:41 PM
Last modification on : Wednesday, February 17, 2021 - 3:32:52 AM

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  • HAL Id : hal-02588789, version 1
  • IRSTEA : PUB00021123

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Antoine Brin, Hervé Brustel, Christophe Bouget, J.C. Samalens, D. Piou, et al.. Dead wood attributes as biodiversity indicators in plantation forests. Indicators for sustainable forest management in cultivated forests - Forsee project final meeting, Porto, PRT, 11-13 December 2006, 2006, pp.30. ⟨hal-02588789⟩

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