Biogeochemical investigation of cold seep sediments in the Eastern Mediterranean Sea
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2014
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| _version_ | 1867167671490969600 |
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| author | Pop Ristova, Petra Wenzhöfer, Frank Ramette, Alban Felden, Janine Boetius, Antje |
| author_facet | Pop Ristova, Petra Wenzhöfer, Frank Ramette, Alban Felden, Janine Boetius, Antje |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Cold seep ecosystems are highly productive, fragmented ecosystems of the deep-sea floor. They form worldwide where methane reaches the surface seafloor, and are characterized by rich chemosynthetic communities fueled by the microbial utilization of hydrocarbons. Here we investigated with in situ (benthic chamber, microprofiler) and ex situ (pore water constituents, turnover rates of sulfate and methane, prokaryote abundance) techniques reduced sites from three different seep ecosystems in the Eastern Mediterranean deep-sea. At all three cold seep systems, the Amon Mud Volcano, Amsterdam Mud Volcano and the Nile Deep Sea Fan Pockmark area, we observed and sampled patches of highly reduced, methane-seeping sulfidic sediments which were separated by tens to hundreds of (kilo)meters with non-reduced oxygenated seafloor areas. All investigated seep sites were characterized by gassy, sulfidic sediments of blackish color, of which some were overgrown with thiotrophic bacterial mats. Fluxes of methane and oxygen, as well as sulfate reduction rates varied between the different sites. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_830241 |
| institution | PANGAEA |
| language | en |
| publishDate | 2014 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Biogeochemical investigation of cold seep sediments in the Eastern Mediterranean Sea Pop Ristova, Petra Wenzhöfer, Frank Ramette, Alban Felden, Janine Boetius, Antje Center for Marine Environmental Sciences; HERMIONE; Hotspot Ecosystem Research and Mans Impact On European Seas; MARUM Cold seep ecosystems are highly productive, fragmented ecosystems of the deep-sea floor. They form worldwide where methane reaches the surface seafloor, and are characterized by rich chemosynthetic communities fueled by the microbial utilization of hydrocarbons. Here we investigated with in situ (benthic chamber, microprofiler) and ex situ (pore water constituents, turnover rates of sulfate and methane, prokaryote abundance) techniques reduced sites from three different seep ecosystems in the Eastern Mediterranean deep-sea. At all three cold seep systems, the Amon Mud Volcano, Amsterdam Mud Volcano and the Nile Deep Sea Fan Pockmark area, we observed and sampled patches of highly reduced, methane-seeping sulfidic sediments which were separated by tens to hundreds of (kilo)meters with non-reduced oxygenated seafloor areas. All investigated seep sites were characterized by gassy, sulfidic sediments of blackish color, of which some were overgrown with thiotrophic bacterial mats. Fluxes of methane and oxygen, as well as sulfate reduction rates varied between the different sites. |
| title | Biogeochemical investigation of cold seep sediments in the Eastern Mediterranean Sea |
| topic | Center for Marine Environmental Sciences; HERMIONE; Hotspot Ecosystem Research and Mans Impact On European Seas; MARUM |
| url | https://doi.org/10.1594/PANGAEA.830241 |