Recovery of plant communities after the eradication of iceplant (Carpobrotus sp.) within the framework of Bagaud island ecological restoration program (Port-Cros National Park, France): results 5 years after eradication

Rapport scientifique du Parc National de Port-Cros International audience Bagaud island (Hyères Island Archipelago, Var, France), was submitted to two major disturbances during the last centuries: the invasions of the black rat (Rattus rattus) and iceplant (Carpobrotus sp.). An eradication program o...

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Bibliographic Details
Main Authors: Buisson, Elise, Aboucaya, Annie, AFFRE, Laurence, Braschi, Julie, Chenot, Julie, Dailly, Sébastien, Hess, Manon, Passetti, Aurélie, Pavon, Daniel, Ramone, Hervé, Vidaller, Christel, Krebs-Amy, Elise
Other Authors: Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement IRD : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU), Port-Cros National Park, Parc national de Port Cros
Format: Article in Journal/Newspaper
Language:French
Published: HAL CCSD 2018
Subjects:
Online Access:https://hal-amu.archives-ouvertes.fr/hal-01890146
https://hal-amu.archives-ouvertes.fr/hal-01890146/document
https://hal-amu.archives-ouvertes.fr/hal-01890146/file/Buisson%20et%20al%202018%20Scientific%20Reports%20Port-Cros%20National%20Park%2032%20123-135-1_mod.pdf
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Summary:Rapport scientifique du Parc National de Port-Cros International audience Bagaud island (Hyères Island Archipelago, Var, France), was submitted to two major disturbances during the last centuries: the invasions of the black rat (Rattus rattus) and iceplant (Carpobrotus sp.). An eradication program of these two taxa was launched in 2010 by the Port-Cros National Park. This project involves a 10-year monitoring of animal and plant communities, including a preeradication monitoring in 2010 and 2011. Temporal changes of plant communities (i.e., plant cover and similarity between native vegetation and vegetation in areas where Carpobrotus sp. was removed) were analyzed in permanent plots (100 m² and 16 m²) before (2010-2011) and after (2013-2014) Carpobrotus sp. eradication. Native plant cover significantly increased since 2013. On coastal sites, the recovery of native flora is fast and matches with the haloresistant reference plant community. On the other hand, on inland sites, the recovered native flora includes some low matorral species as well as halo-nitrophilous species. This monitoring from 2010 to 2017 is important to understand plant community recovery after the eradication of 2 invasive taxa. L'île de Bagaud (archipel des îles d'Hyères, Var, France) a été soumise à deux perturbations majeures d'origine anthropique au cours des derniers siècles : l'invasion du rat noir (Rattus rattus) et des griffes de sorcière (Carpobrotus sp.). Un programme d'éradication de ces deux taxons a été lancé en 2010 par le Parc national de Port-Cros. Ce projet prévoit un suivi des communautés animales et végétales sur 10 ans, précédé d'un «état zéro» pré-éradications de 2 ans. Les changements temporels des communautés végétales (i.e., recouvrement végétal et similarité entre la végétation autochtone et la végétation sur les zones où Carpobrotus sp. a été retiré) ont été analysés au sein de placettes permanentes (100 m² et 16 m²) avant (2010-2011) et après éradication (2013-2014) de Carpobrotus sp. Le recouvrement végétal de ...