The Cassaïre wetland restoration project: defining the reference ecosystem

Q4 Environmental Science Ecologia Mediterranea Pub Date : 2022-01-01 DOI:10.3406/ecmed.2022.2140
Isabella P. Muller, Johan Friry, E. Buisson, F. Mesléard
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Abstract

Defining a reference ecosystem for ecological restoration project is an essential step. The reference can correspond to the historical ecosystem, can be defined to solve environmental issues or can correspond to a socioecosystem. For the restoration of the Cassaïre site in the Camargue delta in southern France, the reference ecosystems chosen are : Mediterranean temporary wetlands and Mediterranean meso-xeric grasslands. The choice of these two reference ecosystems appears logical considering their contribution to regional biodiversity. Temporary wetlands and meso-xeric grasslands are rare, adapted to the Mediterranean climate, seriously endangered and host a high species richness. They are potentially achievable restoration targets because patches of these ecosystems remain in the Camargue area and close to the Cassaïre site. Moreover, an ecological history approach reveals deep human imprints on ecosystems and ensures that historical restoration targets (the state prior to human impacts) cannot be reached, because they are associated with hydraulic functioning (flooding of the Rhône and Durance) that no longer exists. The restored site is planned to be suitable for livestock grazing, thus presenting a new agricultural opportunity, while simultaneously offering new services, such as hunting.
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Cassaïre湿地恢复工程:确定参考生态系统
确定生态修复工程的参考生态系统是必不可少的一步。参考可以对应历史生态系统,可以定义为解决环境问题,也可以对应社会生态系统。对于法国南部卡马尔格三角洲Cassaïre遗址的恢复,选择的参考生态系统是:地中海临时湿地和地中海中干草地。考虑到这两个参考生态系统对区域生物多样性的贡献,选择它们似乎是合乎逻辑的。临时湿地和中干草地十分罕见,适应地中海气候,严重濒危,拥有丰富的物种。它们是可能实现的恢复目标,因为这些生态系统的斑块仍然存在于卡马格地区,并且靠近Cassaïre站点。此外,生态历史方法揭示了人类对生态系统的深刻影响,并确保无法达到历史恢复目标(人类影响之前的状态),因为它们与不再存在的水力功能(Rhône和Durance的洪水)相关。修复后的场地计划适合放牧牲畜,从而提供新的农业机会,同时提供新的服务,如狩猎。
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Ecologia Mediterranea
Ecologia Mediterranea Environmental Science-Ecology
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期刊介绍: ecologia mediterranea publie des articles de recherche originaux sur des sujets se rapportant à l’écologie fondamentale ou appliquée des régions méditerranéennes. La revue exclut les articles purement descriptifs ou de systématique. ecologia mediterranea peut publier des études plus descriptives si elles apportent des connaissances approfondies d’intérêt général pour les écologues. ecologia mediterranea privilégie les domaines scientifiques suivants : bioclimatologie, biogéographie, biologie de la conservation, biologie marine, biologie des populations, écologie des communautés, écologie forestière, écologie génétique, écologie marine, écologie microbienne, écologie du paysage, écologie de la restauration, écologie végétale et animale, écophysiologie, paléoclimatologie, paléoécologie. La revue accepte également des articles de synthèse, des notes / communications courtes, des comptes-rendus d’ouvrages, des résumés de thèse, ainsi que des commentaires sur les articles récemment parus dans ecologia mediterranea . La revue publie aussi des actes de colloques faisant l’objet d’un numéro spécial. Dans ce cas, prendre contact avec les éditrices.
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