Vulnerability of native communities to invasive insects and climate change in sub-Antarctic islands

• Main Authors: Renault, David, Lebouvier, Marc, Hullé, Maurice, Marais, Armelle, Frenot, Yves
• Other Authors: Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES), Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Biologie des organismes et des populations appliquées à la protection des plantes (BIO3P), AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Recherche Agronomique (INRA), Génomique, développement et pouvoir pathogène (GD2P), Université Bordeaux Segalen - Bordeaux 2-Institut National de la Recherche Agronomique (INRA)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2009
• Subjects: INSECTE; ECOLOGIE; [SDV]Life Sciences [q-bio]; Antarctic; Kerguelen; Kerguelen Islands; Antarc*
• Online Access: https://hal.inrae.fr/hal-02754671

International audience The subantarctic islands provide a suite of environments and scenarios that give key opportunities to improve understanding of the consequences of climate change and biological invasions on terrestrial ecosytems. Anthropogenically-related invasions and temperature changes, amongst the most rapid worldwide are well documented in Kerguelen Islands and have profound impacts on indigenous biota. Here, we present an overview of the vulnerability of the terrestrial communities in French subantarctic Islands to two interacting factors: climate change and species introduction. We focussed on three invasive insects: one carabid beetle, one fly and aphids. By collating the data collected by our research group since 1974, coupled to the data we found in the literature, we addressed: (1) Dynamic of species introductions, including the study of the distribution and abundances of the invasive species, (2) Effects of climate change on the impact of invasive species on native communities, Vulnerability of the native communities, including ecological and evolutionary consequences of biological invasions.