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Revue bibliographique sur la restauration des pelouses calcicoles en Europe : contraintes rencontrées et solutions proposées

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Author(s): Piqueray, J. | Mahy G. 

Journal: Biotechnologie, Agronomie, Société et Environnement
ISSN 1370-6233

Volume: 14;
Issue: 3;
Start page: 471;
Date: 2010;
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Keywords: Restoration ecology | calcareous grasslands | biotic/abiotic conditions | restoration techniques | plant communities

ABSTRACT
The restoration of calcareous grasslands in Europe: a review of constraints and solutions. Calcareous grasslands that are considered as biodiversity hotspots in Europe, have suffered an important decline during the last century. In this context, restoration of suitable habitats has been promoted as a conservation strategy. Restoration consists in the recreation of favorable abiotic and biotic conditions that permit the recolonization by typical species. Depending on the degradations, several constraints can be encountered during restoration, such as soil enrichment, the presence of competitive species, or harsh conditions for plant growth. In order to overcome these constraints, scientists have proposed techniques that were demonstrated to be more or less efficient. In this article, the different constraints that can occur while restoring calcareous grasslands are described as well as the techniques proposed in the scientific literature. We also describe restoration objectives specific to calcareous grasslands, taking the history of these habitats into account and considering global change issue. Different parameters can be considered to value restoration success. Here again, an analysis of the scientific literature is needed in order to best assess restoration monitoring.

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