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Restructuring of the ‘Macaronesia’ biogeographic unit: A marine multi-taxon biogeographical approach

2019; Nature Portfolio; Volume: 9; Issue: 1 Linguagem: Inglês

10.1038/s41598-019-51786-6

2045-2322

Rui Freitas, María M. Romeiras, Luís Silva, Ricardo Cordeiro, Patrícia Madeira, José A. González, Peter Wirtz, J.M. Falcón, Alberto Brito, Sergio R. Floeter, Pedro Afonso, Filipe M. Porteiro, María Ascensión Viera-Rodríguez, Ana I. Neto, Ricardo Haroun, João Farminhão, Ana Cristina Rebelo, Lara Baptista, Carlos S. Melo, Alejandro Martínez, Jorge Núñez, Björn Berning, Markes E. Johnson, Sérgio P. Ávila,

Marine Biology and Ecology Research

Abstract The Azores, Madeira, Selvagens, Canary Islands and Cabo Verde are commonly united under the term “Macaronesia”. This study investigates the coherency and validity of Macaronesia as a biogeographic unit using six marine groups with very different dispersal abilities: coastal fishes, echinoderms, gastropod molluscs, brachyuran decapod crustaceans, polychaete annelids, and macroalgae. We found no support for the current concept of Macaronesia as a coherent marine biogeographic unit. All marine groups studied suggest the exclusion of Cabo Verde from the remaining Macaronesian archipelagos and thus, Cabo Verde should be given the status of a biogeographic subprovince within the West African Transition province. We propose to redefine the Lusitanian biogeographical province, in which we include four ecoregions: the South European Atlantic Shelf, the Saharan Upwelling, the Azores, and a new ecoregion herein named Webbnesia, which comprises the archipelagos of Madeira, Selvagens and the Canary Islands.