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The physicochemical habitat of Sclerolinum sp. at Hook Ridge hydrothermal vent, Bransfield Strait, Antarctica

2005; Wiley; Volume: 50; Issue: 2 Linguagem: Inglês

10.4319/lo.2005.50.2.0598

1939-5604

Heiko Sahling, Klaus Wallmann, Anke Dählmann, Rolf Schmaljohann, Sven Petersen,

Methane Hydrates and Related Phenomena

Limnology and OceanographyVolume 50, Issue 2 p. 598-606 ArticleFree Access The physicochemical habitat of Sclerolinum sp. at Hook Ridge hydrothermal vent, Bransfield Strait, Antarctica Heiko Sahling, Corresponding Author Heiko Sahling Leibniz-Institut für Meereswissenschaften, IfM-GEOMAR Wischhofstr. 1-3, 24148 Kiel, GermanyTo whom correspondence should be addressed. Present address: RCOM—Research Center Ocean Margins, Klagenfurter Strasse, 28359 Bremen, Germany(hsahling@uni-bremen.de)Search for more papers by this authorKlaus Wallmann, Klaus Wallmann Leibniz-Institut für Meereswissenschaften, IfM-GEOMAR Wischhofstr. 1-3, 24148 Kiel, GermanySearch for more papers by this authorAnke Dählmann, Anke Dählmann Utrecht University, Faculty of Geosciences, Department of Earth Science-Geochemistry, P.O. Box 80021, 3508 TA Utrecht, The NetherlandsSearch for more papers by this authorRolf Schmaljohann, Rolf Schmaljohann Leibniz-Institut für Meereswissenschaften, IfM-GEOMAR Wischhofstr. 1-3, 24148 Kiel, GermanySearch for more papers by this authorSven Petersen, Sven Petersen Freiberg University of Mining and Technology, Department of Economic Geology, Institute for Mineralogy, Brennhausgasse 14, 09596 Freiberg, GermanySearch for more papers by this author Heiko Sahling, Corresponding Author Heiko Sahling Leibniz-Institut für Meereswissenschaften, IfM-GEOMAR Wischhofstr. 1-3, 24148 Kiel, GermanyTo whom correspondence should be addressed. Present address: RCOM—Research Center Ocean Margins, Klagenfurter Strasse, 28359 Bremen, Germany(hsahling@uni-bremen.de)Search for more papers by this authorKlaus Wallmann, Klaus Wallmann Leibniz-Institut für Meereswissenschaften, IfM-GEOMAR Wischhofstr. 1-3, 24148 Kiel, GermanySearch for more papers by this authorAnke Dählmann, Anke Dählmann Utrecht University, Faculty of Geosciences, Department of Earth Science-Geochemistry, P.O. Box 80021, 3508 TA Utrecht, The NetherlandsSearch for more papers by this authorRolf Schmaljohann, Rolf Schmaljohann Leibniz-Institut für Meereswissenschaften, IfM-GEOMAR Wischhofstr. 1-3, 24148 Kiel, GermanySearch for more papers by this authorSven Petersen, Sven Petersen Freiberg University of Mining and Technology, Department of Economic Geology, Institute for Mineralogy, Brennhausgasse 14, 09596 Freiberg, GermanySearch for more papers by this author First published: 17 March 2005 https://doi.org/10.4319/lo.2005.50.2.0598Citations: 40 Present address: Leibniz-Institut für Meereswissenschaften, IfM-GEOMAR Wischofstr. 1–3, 24148 Kiel, Germany. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract At Hook Ridge hydrothermal vent, a new species of Sclerolinum (Monilifera, Siboglinidae) was found at a water depth of 1,045 m. On the basis of investigations of multicores and gravity cores, the species habitat is characterized. Sclerolinum does not occur in sediments that are most strongly influenced by hydrothermal fluids, probably because of high temperature (up to 49°C) and precipitation of siliceous crusts. About 800 individuals m−2 occur in sediments that are only weakly exposed to hydrothermal flow and have the following characteristics: 20°C (15 cm sediment depth) to 21.5°C (bottom water), 18–40 cm yr−1 advection rates, pH 5.5, <25 µmol L−1 methane, <170 µmol L−1 sulfide, and <0.0054 mol m−2 yr−1 sulfide flux. Comparison with geochemical data from other reducing sediments indicates that the two groups of Siboglinidae, Monilifera and Frenulata, occur in sediments with low sulfide concentration and flux. In contrast, sulfurbased chemosynthetic organisms that typically occur at hydrothermal vents and cold seeps (e.g., Vestimentifera, vesicomyid clams, and bacterial mats) occur in sediments with higher sulfide availability; threshold values are around 500 µmol L−1 sulfide and 0.1 mol m−2 yr−1 sulfide fluxes. We did not find typical hydrothermal vent species at Hook Ridge hydrothermal vent, which might be explained by the unfavorable physicochemical habitat: At sites inhabited by Sclerolinum, sulfide availability appears to be too low, whereas at sites with higher sulfide availability, the temperatures might be too high, siliceous crust precipitation could preclude their occurrence, or both. Citing Literature Supporting Information Filename Description 0598a1.pdfPDF document, 34.4 KB Appendix 1 Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume50, Issue2March 2005Pages 598-606 RelatedInformation