Latest news

IRD is officially joining the GDR in 2018

The GDR was historically founded by Ifremer and CNRS and enlarged in 2015 to Scotland, Belgium and Crete.

Starting in 2018 the GDRi consortium will receive funding from the IRD (French National Research Institute for Sustainable Development, to support the involvement of African researchers and students working on marine connectivity.

iMarco Heraklion 2018

Publié le 27 avril 2018

Welcome to the Fourth International Marine Connectivity (iMarCo) Conference in Crete, Greece! October 8th-9th

The organizing committee, Costas Tsigenopoulos & Panagiotis Kasapidis (HCMR, Greece), Sophie Arnaud-Haond (IFREMER, France) and Nicolas Bierne (CNRS, France) are proud to host as Guest speakers:

  • David M. Kaplan (IRD-Marbec, France): “Squaring data and models in larval connectivity studies: Conceptual differences, uncertainties and future challenges
  • Philip Thomsen (Department of Bioscience, Aarhus University, Denmark) “Next-generation marine biodiversity research using environmental DNA
  • Justin Travis (The Institute of Biological and Environmental Sciences, University of Aberdeen, UK): “Determining effective connectivity: developing models that go beyond structural and functional estimates
  • Robin Waples (Northwest Fisheries Science Center, NOAA, USA) “Close-kin genetic estimates of census size and effective size in marine species

ATTENTION: Due to an unexpected number of registratuon we moved th emeeting room to the following hotel: Aquila Atlantis Hotel, Heraklion, Greece (


In population biology/genetics, "connectivity" in a metapopulation through the migration of individuals/genes, can be understood as the opposite of the isolation of demes. An enhanced connectivity can reduce the vulnerability of demes through a rescue effect provided by immigration from other demes, reduce the risk of disruption of the metapopulation system, or counter the local effects of genetic drift.

En biologie/génétique des populations, on peut comprendre le terme de "connectivité" d’une métapopulation par le biais de la migration des individus/des gènes, comme l’inverse de l’isolement des dèmes (sous-populations) les uns par rapport aux autres. Une plus grande connectivité peut réduire la vulnérabilité des dèmes à l’extinction par effet secours de l’immigration depuis les autres dèmes, réduire le risque de scission du système de métapopulation, ou encore contrecarrer les effets locaux de la dérive génétique par l’afflux de gènes.


: Sophie Arnaud-Haond, Ifremer - Nicolas Bierne, CNRS

: Coordinateurs

Ifremer Sète