Molecular evidence for bacterial mediation of calcite formation in cold high-altitude caves

Blyth  AJ; Frisia  S

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Molecular evidence for bacterial mediation of calcite formation in cold high-altitude caves

机译：Molecular evidence for bacterial mediation of calcite formation in cold high-altitude caves

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Three samples of moonmilk from high-altitude caves in northeast Italy were analysed for their lipid biomarker content, providing the first organic geochemical investigation into the relationship between cave bacterial communities and calcitic speleothems. The results demonstrate a positive association between the moonmilk deposits analysed and bacterial input, which we propose relates to bio-mediation of calcite nucleation processes. Comparison of the analysed moonmilk and a stalagmite from a geographically and climatically related cave suggest that this association is at least partially driven by the characteristics of the soil and overlying vegetation, thus demonstrating the potential use of moonmilk in palaeoenvironmental research.

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《Geomicrobiology journal》 |2008年第2期|101-111|共11页
作者
Blyth AJ; Frisia S;
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作者单位

Univ Newcastle, Sch Civil Engn & Geosci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England;

Univ Newcastle, Sch Environm & Life Sci, Newcastle, NSW 2308, Australia;

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正文语种英语
中图分类其他应用微生物学;
关键词
moonmilk; bacteria; speleothems; fatty acids; n-alkanols; calcite morphology; crystal nucleation; FATTY-ACIDS; PALEOCLIMATE CHANGE; SOUTHERN CHINA; SPELEOTHEMS; STALAGMITES; GROWTH; MICROORGANISMS; PRECIPITATION; STROMATOLITES; HYDROXYACIDS;

Molecular evidence for bacterial mediation of calcite formation in cold high-altitude caves

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