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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Torres-Crespo, N. Bedmar, E. J. Jroundi, F. González-Muñoz, M. T. Martínez-Ruiz, F. De Lange, G. J. |
| Spatial Coverage | Mediterranean Sea |
| Description | Author Affiliation: Torres-Crespo N ( Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR) Av. de las Palmeras 4, 18100 Armilla, Granada, Spain. Electronic address: ntorres@ugr.es.); Martínez-Ruiz F ( Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR) Av. de las Palmeras 4, 18100 Armilla, Granada, Spain. Electronic address: fmruiz@ugr.es.); González-Muñoz MT ( Departamento de Microbiología, Facultad de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18002 Granada, Spain. Electronic address: mgonzale@ugr.es.); Bedmar EJ ( Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, C/Profesor Albareda 1, 18008 Granada, Spain. Electronic address: bedmar@eez.csic.es.); De Lange GJ ( Department of Earth Sciences, Geosciences Faculty, Utrecht University, Budapestlaan 4, P.O. Box 80021, 3584 CD Utrecht, The Netherlands. Electronic address: g.j.delange@uu.nl.); Jroundi F ( Departamento de Microbiología, Facultad de Ciencias, Universidad de Granada, Avda. Fuentenueva s/n, 18002 Granada, Spain. Electronic address: fadwa@ugr.es.) |
| Abstract | Marine bacteria isolated from natural seawater were used to test their capacity to promote barite precipitation under laboratory conditions. Seawater samples were collected in the western and eastern Mediterranean at 250 m and 200 m depths, respectively, since marine barite formation is thought to occur in the upper water column. The results indicate that Pseudoalteromonas sp., Idiomarina sp. and Alteromonas sp. actually precipitate barite under experimental conditions. Barite precipitates show typical characteristics of microbial precipitation in terms of size, morphology and composition. Initially, a P-rich phase precipitates and subsequently evolves to barite crystals with low P contents. Under laboratory conditions barite formation correlates with extracellular polymeric substances (EPS) production. Barite precipitates are particularly abundant in cultures where EPS production is similarly abundant. Our results further support the idea that bacteria may provide appropriate microenvironments for mineral precipitation in the water column. Therefore, bacterial production in the past ocean should be considered when using Ba proxies for paleoproductivity reconstructions. |
| ISSN | 00489697 |
| Volume Number | 512-513 |
| e-ISSN | 18791026 |
| Journal | Science of The Total Environment |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-04-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Bacteria Metabolism Barium Sulfate Seawater Microbiology Water Pollutants, Chemical Analysis Climate Mediterranean Sea Phylogeny Rna, Ribosomal, 16s Chemistry Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
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