Chemical speciation drives hydrothermal vent ecology
The physiology and biochemistry of many taxa inhabiting deep-sea hydrothermal vents have been elucidated; however, the physicochemical factors controlling the distribution of these organisms at a given vent site remain an enigma after 20 years of research. The chemical speciation of particular eleme...
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| Veröffentlicht in: | Nature (London) 2001-04, Vol.410 (6830), p.813-816 |
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| creator | Nuzzio, Donald B Taillefert, Martial Luther, George W Shank, Timothy M Rozan, Tim F Cary, S. Craig Di Meo, Carol Lutz, Richard A |
| description | The physiology and biochemistry of many taxa inhabiting deep-sea hydrothermal vents have been elucidated; however, the physicochemical factors controlling the distribution of these organisms at a given vent site remain an enigma after 20 years of research. The chemical speciation of particular elements has been suggested as key to controlling biological community structure in these extreme aquatic environments. Implementation of electrochemical technology has allowed us to make in situ measurements of chemical speciation at vents located at the East Pacific Rise (9° 50′ N) and on a scale relevant to the biology. Here we report that significant differences in oxygen, iron and sulphur speciation strongly correlate with the distribution of specific taxa in different microhabitats. In higher temperature (> 30 °C) microhabitats, the appreciable formation of soluble iron-sulphide molecular clusters markedly reduces the availability of free H2S/HS- to vent (micro)organisms, thus controlling the available habitat. |
| doi_str_mv | 10.1038/35071069 |
| format | Article |
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| subjects | Animal and plant ecology Animal, plant and microbial ecology Animals Aquatic environment Biochemistry Biological and medical sciences Chemical speciation Community structure Deep sea Ecology Electrochemistry Fundamental and applied biological sciences. Psychology Habitat availability High temperature Humanities and Social Sciences In situ measurement Invertebrates letter Marine Marine Biology Microhabitats multidisciplinary Oceans Pacific Ocean Physiology Polychaeta Science Science (multidisciplinary) Sea water ecosystems Seawater - chemistry Speciation Sulfides Sulfides - analysis Synecology Thermodynamics |
| title | Chemical speciation drives hydrothermal vent ecology |
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