1. Northeastern Atlantic cold-water coral reefs and climate.
- Author
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Frank, Norbert, Freiwald, André, Correa, Matthias López, Wienberg, Claudia, Eisele, Markus, Hebbeln, Dierk, Van Rooij, David, Henriet, Jean-Pierre, Colin, Christophe, van Weering, Tjeerd, de Haas, Henk, Buhl-Mortensen, Pål, Roberts, J. Murray, De Mol, Ben, Douville, Eric, Blamart, Dominique, and Hatté, Christine
- Subjects
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DEEP-sea corals , *CORAL reefs & islands , *LIFE zones , *PLEISTOCENE stratigraphic geology , *FREE earth oscillations , *GLACIAL Epoch , *GEOLOGY - Abstract
U-series age patterns obtained on reef framework-forming cold-water corals collected over a nearly 6000-km-long continental margin sector, extending from off Mauritania (17°N; northwest Africa) to the southwestern Barents Sea (70°N; northeastern Europe), reveal strong climate influences on the geographical distribution and sustained development of these ecosystems. Over the past three glacial-interglacial cycles, framework-forming cold-water corals (Lophelia pertusa and Madrepora oculata) seem to have predominantly populated reefs, canyons, and patches in the temperate East Atlantic and the Mediterranean Sea. Above 50°N corals colonize reefs in the northern East Atlantic primarily during warm climate periods with the biogeographic limit advancing from ~50°N to ~70°N. We propose that north-south oscillations of the biogeographic limit of reef developments are paced by ice ages and may occur synchronously with north-south displacement of cold nutrient-rich intermediate waters and surface productivity related to changes of the polar front. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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