Productivity controlled cold-water coral growth periods during the last glacial off Mauritania

Autor: Claudia Wienberg, Markus Hermann Eisele, Dierk Hebbeln, Eric Douville, Norbert Frank, M. López Correa, André Freiwald
Přispěvatelé: Center for Marine Environmental Sciences [Bremen] (MARUM), Universität Bremen, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Géochrononologie Traceurs Archéométrie (GEOTRAC), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2011
Předmět:
010504 meteorology & atmospheric sciences
Lophelia
[SDE.MCG]Environmental Sciences/Global Changes
Coral
010502 geochemistry & geophysics
Oceanography
01 natural sciences
[SDV.EE.ECO]Life Sciences [q-bio]/Ecology
environment/Ecosystems
Continental margin
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry
Geochemistry and Petrology
14. Life underwater
Stadial
Glacial period
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
ComputingMilieux_MISCELLANEOUS
0105 earth and related environmental sciences
biology
[CHIM.ORGA]Chemical Sciences/Organic chemistry
Geology
Sedimentation
biology.organism_classification
[SDE.ES]Environmental Sciences/Environmental and Society
Productivity (ecology)
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology
[SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy
[SHS.ENVIR]Humanities and Social Sciences/Environmental studies
Interglacial
Zdroj: Marine Geology
Marine Geology, Elsevier, 2011, 280 (1-4), pp.143-149. ⟨10.1016/j.margeo.2010.12.007⟩
Marine Geology, 2011, 280 (1-4), pp.143-149. ⟨10.1016/j.margeo.2010.12.007⟩
ISSN: 0025-3227
DOI: 10.1016/j.margeo.2010.12.007
Popis: Article history:Received 17 June 2010Received in revised form 29 October 2010Accepted 11 December 2010Available online 21 December 2010Communicated by G.J. de LangeKeywords:Lopheliacold-water coralscarbonate moundsBanda Mound ProvinceNW-Africaprimary productivity Cold-water corals are widely distributed along the Atlantic continental margin with varying growth patternsinrelationtotheirspecificenvironment.Here,weinvestigatethelong-termdevelopmentofcold-watercoralsthat once thrived on a low-latitude (17°40′N) cold-water coral mound in the Banda Mound Province offMauritania duringthelastglacial–interglacialcycle. U/Thdatesobtained from20specimensofthecold-watercoral Lophelia pertusa, revealed three distinct periods of coral growth during the last glacial at 65 to 57 kyr BP,45 to 32 kyr BP and 14 kyr BP, thus comprising the cool periods of Marine Isotopic Stages (MIS) 2–4. Thesecoral growth periods occur during periods of increased productivity in the region, emphasizing thatproductivity seems to be the major steering factor for coral growth off Mauritania, which is one of the majorupwelling regions in the world. This pattern differs from the well studied coral mounds off Ireland, where thecurrent regime predominantly influences the prosperity of the cold-water corals. Moreover, coral growth offIreland takes place during rather warm interglacial and interstadial periods, whereas off Mauritania coralgrowth is restricted to glacial and stadial periods. However, the on-mound sedimentation patterns offMauritania largely resemble the observations reported from the Irish mounds. The bulk of the preservedsediments derives from periods of coral growth, whereas during periods without corals hardly any netsedimentation or mound growth took place.© 2011 Elsevier B.V. All rights reserved.
Databáze: OpenAIRE
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