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Out of the Mediterranean? Post‐glacial colonization pathways varied among cold‐water coral species ArchiMer
Boavida, Joana; Becheler, Ronan; Choquet, Marvin; Frank, Norbert; Taviani, Marco; Bourillet, Jean-francois; Meistertzheim, Anne‐leila; Grehan, Anthony; Savini, Alessandra; Arnaud-haond, Sophie.
Aim To infer cold‐water corals’ (CWC) post‐glacial phylogeography and assess the role of Mediterranean Sea glacial refugia as origins for the recolonization of the northeastern Atlantic Ocean. Location Northeastern Atlantic Ocean and Mediterranean Sea. Taxon Lophelia pertusa, Madrepora oculata. Methods We sampled CWC using remotely operated vehicles and one sediment core for coral and sediment dating. We characterized spatial genetic patterns (microsatellites and a nuclear gene fragment) using networks, clustering and measures of genetic differentiation. Results Inferences from microsatellite and sequence data were congruent, and showed a contrast between the two CWC species. Populations of L. pertusa present a dominant pioneer haplotype, local haplotype...
Tipo: Text Palavras-chave: Cold-water corals; Deep-sea; Glacial marine refugia; Last Glacial Maximum; Lophelia pertusa; Madrepora oculata; Marine phylogeography.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00487/59864/63140.pdf
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Santa Maria di Leuca Province (Mediterranean Sea): Identification of Suitable Mounds for Cold-Water Coral Settlement Using Geomorphometric Proxies and Maxent Methods ArchiMer
Bargain, Annaelle; Marchese, Fabrice; Savini, Alessandra; Taviani, Marco; Fabri, Marie-claire.
The Santa Maria di Leuca (SML) cold-water coral province (northern Ionian Sea) has the largest occurrence of a living white coral community currently known in the Mediterranean Sea. Madrepora oculata and Lophelia pertusa, identified as marking sensitive habitats of relevance by the General Fisheries Commission for the Mediterranean, have been observed heterogeneously distributed on the summits of several mounds. This particularly patchy and uneven distribution in addition to their importance for regional biodiversity highlights the need to better understand their environmental preferences and predict their distribution. Bathymetric data (40 m resolution) was used to derive seafloor characteristics. A fine scale index quantifying the landscape elevation...
Tipo: Text Palavras-chave: Predictive habitat mapping; Maxent; Cold-water coral; Ecological proxies; Santa Maria di Leuca; Mediterranean Sea.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00407/51826/52418.pdf
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