AUBERT, Michaël; ALARD, Didier; BUREAU, Fabrice

doi:10.1016/S0378-1127(02)00215-3

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AUBERT, Michaël
Université de Rouen Normandie [UNIROUEN]
Etude et Compréhension de la biodiversité [ECODIV]
Étude et compréhension de la biodiversité [ECODIV]

ALARD, Didier
Biodiversité, Gènes & Communautés [BioGeCo]

BUREAU, Fabrice
Etude et Compréhension de la biodiversité [ECODIV]
Étude et compréhension de la biodiversité [ECODIV]
Université de Rouen Normandie [UNIROUEN]

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Forest Ecology and Management. 2003-03, vol. 175, n° 1-3, p. 321-337

Elsevier

Résumé en anglais

We investigate the patterns of variation of plant community diversity along a silvicultural cycle in a managed beech forest. A statistical model of the silvicultural cycle is constructed in order to identify: (i) the relationships between species and environmental factors, and (ii) species assemblages occurring along the successional gradient. We measure six diversity indices accounting for the structural (species richness (SR), Shannon index, evenness index), the functional (factorial diversity, FD) and the compositional dimension (similarity index within and between records) of biodiversity. We compare their patterns of variation along the succession in order to understand the different information provided by each index.The model reveals that species assemblages occurring in regeneration stands have the highest SR along the cycle. Species coexistence in these assemblages appears to be based on non-equilibrium mechanisms. On the other hand, mature stands with closed canopy seem to host the more organised communities reflecting true coexistence based on equilibrium mechanisms.We discuss the indicative values of the different diversity measures and their interest for the development of sustainable forest management. We advocate that conservation priorities should thus be defined in reference to the processes controlling biodiversity and to the taxonomic groups responding to these processes.< Réduire

Mots clés en anglais

Species coexistence

SFTS procedure

Biodiversity indicators

Succession

Beech forest

Forest management

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Diversity of plant assemblages in managed temperate forests: a case study in Normandy (France)

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