globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2018.02.012
Scopus记录号: 2-s2.0-85042189601
论文题名:
The giant Mauritanian cold-water coral mound province: Oxygen control on coral mound formation
作者: Wienberg C.; Titschack J.; Freiwald A.; Frank N.; Lundälv T.; Taviani M.; Beuck L.; Schröder-Ritzrau A.; Krengel T.; Hebbeln D.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 185
起始页码: 135
结束页码: 152
语种: 英语
英文关键词: Coral mound ; Dissolved oxygen concentration ; Last glacial ; Lophelia pertusa ; Mauritanian margin ; Mound aggradation rate ; South Atlantic Central Water ; Submarine canyon ; Uranium-series dating
Scopus关键词: Biochemical oxygen demand ; Computer integrated manufacturing ; Geochronology ; Glacial geology ; Oxygen ; Submarines ; Uranium ; Coral mound ; Dissolved oxygen concentrations ; Last glacial ; Lophelia pertusa ; Mauritanian margin ; South Atlantic ; Submarine canyon ; Dissolved oxygen ; coral ; Holocene ; Last Glacial ; oxygen ; refuge ; submarine canyon ; uranium series dating ; water mass ; Atlantic Ocean ; Anthozoa ; Lophelia pertusa
英文摘要: 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. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112267
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作者单位: Center for Marine Environmental Sciences (MARUM), Bremen University, Leobener Strasse 2, Bremen, 28359, Germany; Senckenberg am Meer (SAM), Marine Research Department, Südstrand 40, Wilhelmshaven, 26382, Germany; Institute of Environmental Physics (IUP), Heidelberg University, Im Neuenheimer Feld 229, Heidelberg, 69120, Germany; Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Bât.12, Avenue de la Terrasse, Gif-sur-Yvette, F-91198, France; Swedish Institute for the Marine Environment, University of Gothenburg, Strömstad, 45296, Sweden; Istituto di Scienze Marine (ISMAR-CNR), Via Gobetti 101, Bologna, 40129, Italy; Biology Department, Woods Hole Oceanographic Institution, 266 Woods Hole Road, Woods Hole, MA 02543, United States; Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, 80121, Italy

Recommended Citation:
Wienberg C.,Titschack J.,Freiwald A.,et al. The giant Mauritanian cold-water coral mound province: Oxygen control on coral mound formation[J]. Quaternary Science Reviews,2018-01-01,185
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