Academic Journal
Mid-Holocene extinction of cold-water corals on the Namibian shelf steered by the Benguela oxygen minimum zone
| العنوان: | Mid-Holocene extinction of cold-water corals on the Namibian shelf steered by the Benguela oxygen minimum zone |
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| المؤلفون: | Tamborrino, L. (Leonardo), Wienberg, C. (Claudia), Titschack, Jürgen, Wintersteller, Paul, Mienis, F., Schröder-Ritzrau, Andrea, Freiwald, A. (André), Orejas, C. (Covadonga), Wolf-Christian Dullo Haberkern, Julia, Hebbeln, D. (Dierk) |
| بيانات النشر: | Centro Oceanográfico de Gijón |
| المجموعة: | Instituto Español de Oceanografía: e-IEO |
| الوصف: | An exceptionally large cold-water coral mound province (CMP) was recently discovered extending over 80 km along the Namibian shelf (offshore southwestern Africa) in water depths of 160–270 m. This hitherto unknown CMP comprises >2000 mounds with heights of up to 20 m and constitutes the largest CMP known from the southeastern Atlantic Ocean. Uranium-series dating revealed a short but intense pulse in mound formation during the early to mid-Holocene. Coral proliferation during this period was potentially supported by slightly enhanced dissolved oxygen concentrations compared to the present Benguela oxygen minimum zone (OMZ). The subsequent mid-Holocene strengthening of the Benguela Upwelling System and a simultaneous northward migration of the Angola-Benguela Front resulted in an intensification of the OMZ that caused the sudden local extinction of the Namibian corals and prevented their reoccurrence until today. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | http://hdl.handle.net/10508/14864 |
| DOI: | 10.1130/G46672.1 |
| الاتاحة: | http://hdl.handle.net/10508/14864 https://doi.org/10.1130/G46672.1 |
| رقم الانضمام: | edsbas.232C8B51 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1130/G46672.1 |
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