The giant Mauritanian cold-water coral mound province : oxygen control on coral mound formation Wienberg, Claudia Titschack, Jürgen Freiwald, Andre Frank, Norbert Lundälv, Tomas Taviani, Marco Beuck, Lydia Schröder-Ritzrau, Andrea Krengel, Thomas Hebbeln, Dierk 2018-04-23T17:42:44Z 2018-04-23T17:42:44Z 2018-02-20
dc.description © The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Quaternary Science Reviews 185 (2018): 135-152, doi:10.1016/j.quascirev.2018.02.012. en_US
dc.description.abstract The largest coherent cold-water coral (CWC) mound province in the Atlantic Ocean exists along the Mauritanian margin, where up to 100 m high mounds extend over a distance of ∼400 km, arranged in two slope-parallel chains in 400–550 m water depth. Additionally, CWCs are present in the numerous submarine canyons with isolated coral mounds being developed on some canyon flanks. Seventy-seven Uranium-series coral ages were assessed to elucidate the timing of CWC colonisation and coral mound development along the Mauritanian margin for the last ∼120,000 years. Our results show that CWCs were present on the mounds during the Last Interglacial, though in low numbers corresponding to coral mound aggradation rates of 16 cm kyr−1. Most prolific periods for CWC growth are identified for the last glacial and deglaciation, resulting in enhanced mound aggradation (>1000 cm kyr−1), before mound formation stagnated along the entire margin with the onset of the Holocene. Until today, the Mauritanian mounds are in a dormant state with only scarce CWC growth. In the canyons, live CWCs are abundant since the Late Holocene at least. Thus, the canyons may serve as a refuge to CWCs potentially enabling the observed modest re-colonisation pulse on the mounds along the open slope. The timing and rate of the pre-Holocene coral mound aggradation, and the cessation of mound formation varied between the individual mounds, which was likely the consequence of vertical/lateral changes in water mass structure that placed the mounds near or out of oxygen-depleted waters, respectively. en_US
dc.description.sponsorship This study received funding from and contributes to the DFG-projects "Palaeo-WACOM" (HE 3412/17-1) and "Cold-water coral mound development in a tropical upwelling cell – the great wall of(f) Mauritania" (Ti 706/3-1). A. Freiwald received funding from the Hessian initiative for the development of scientific and economic excellence (LOEWE) at the Biodiversity and Climate Research Centre (BiK-F), Frankfurt, Germany. en_US
dc.identifier.citation Quaternary Science Reviews 185 (2018): 135-152 en_US
dc.identifier.doi 10.1016/j.quascirev.2018.02.012
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri *
dc.subject Lophelia pertusa en_US
dc.subject Coral mound en_US
dc.subject Submarine canyon en_US
dc.subject Uranium-series dating en_US
dc.subject Mound aggradation rate en_US
dc.subject Last glacial en_US
dc.subject Dissolved oxygen concentration en_US
dc.subject South Atlantic Central Water en_US
dc.subject Mauritanian margin en_US
dc.title The giant Mauritanian cold-water coral mound province : oxygen control on coral mound formation en_US
dc.type Article en_US
dspace.entity.type Publication
relation.isAuthorOfPublication 21b0e697-851b-46b0-b305-d10ac46eba62
relation.isAuthorOfPublication 9fb506c7-5bf9-429e-b581-4b0b8c2a547a
relation.isAuthorOfPublication 5fda8fd8-1ff7-432f-981f-6714e6181b50
relation.isAuthorOfPublication 16ff425e-be88-452b-baa0-67957c5d8f09
relation.isAuthorOfPublication 56e1772b-053b-4adf-a949-267203ad2e3c
relation.isAuthorOfPublication 1878afdd-8a8c-479d-9e38-800ca4ec180d
relation.isAuthorOfPublication f33d55b6-4b27-48ab-a05d-926f7c1c6714
relation.isAuthorOfPublication e4cd5db2-b11c-4a11-b209-47f3b3c2cc17
relation.isAuthorOfPublication 0c03f87c-3e03-4cee-8ad0-9806f59e8519
relation.isAuthorOfPublication 4b17cb5a-c9ea-495f-997d-d25e5d5971c3
relation.isAuthorOfPublication.latestForDiscovery 21b0e697-851b-46b0-b305-d10ac46eba62
Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
5.53 MB
Adobe Portable Document Format
No Thumbnail Available
817 B
Extensible Markup Language
Supplementary data
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
1.89 KB
Item-specific license agreed upon to submission