Geomicrobiological Studies of Saline Lakes on the Tibetan Plateau, NW China PDF Download
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Author: Hongchen Jiang
Publisher:
ISBN:
Category : Geomicrobiology
Languages : en
Pages : 206
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Book Description
Lakes constitute an important part of the global ecosystem as habitats in these environments play an important role in biogeochemical cycles of life-essential elements. The cycles of carbon, nitrogen and sulfur in these ecosystems are intimately linked to global phenomena such as climate change. Microorganisms are at the base of the food chain in these environments and drive the cycling of carbon and nitrogen in water columns and the sediments. Despite many studies on microbial ecology of lake ecosystems, significant gaps exist in our knowledge of how microbial and geological processes interact with each other. In this dissertation, I have studied the ecology and biogeochemistry of lakes on the Tibetan Plateau, NW China. The Tibetan lakes are pristine and stable with multiple environmental gradients (among which are salinity, pH, and ammonia concentration). These characteristics allow an assessment of mutual interactions of microorganisms and geochemical conditions in these lakes. Two lakes were chosen for this project: Lake Chaka and Qinghai Lake. These two lakes have contrasting salinity and pH: slightly saline (12 g/L) and alkaline (9.3) for Qinghai Lake and hypersaline (325 g/L) but neutral pH (7.4) for Chaka Lake. We have taken an integrated approach combining geochemistry, molecular phylogeny (both DNA and RNA based, both 16S rRNA and amoA gene), quantitative PCR (total Bacteria, Archaea, total crenarchaeota, AOA, and AOB), and cultivation and isolation. Both lake water and sediments have been analyzed. The results are divided into four chapters and they are summarized below. In addition, I also studied microbial communities and functions in sediments from South China Sea, a potential site for gas hydrate deposits. This work was done as extra add-on to the microbial ecology studies in Titeban lakes.
Author: Hongchen Jiang
Publisher:
ISBN:
Category : Geomicrobiology
Languages : en
Pages : 206
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Book Description
Lakes constitute an important part of the global ecosystem as habitats in these environments play an important role in biogeochemical cycles of life-essential elements. The cycles of carbon, nitrogen and sulfur in these ecosystems are intimately linked to global phenomena such as climate change. Microorganisms are at the base of the food chain in these environments and drive the cycling of carbon and nitrogen in water columns and the sediments. Despite many studies on microbial ecology of lake ecosystems, significant gaps exist in our knowledge of how microbial and geological processes interact with each other. In this dissertation, I have studied the ecology and biogeochemistry of lakes on the Tibetan Plateau, NW China. The Tibetan lakes are pristine and stable with multiple environmental gradients (among which are salinity, pH, and ammonia concentration). These characteristics allow an assessment of mutual interactions of microorganisms and geochemical conditions in these lakes. Two lakes were chosen for this project: Lake Chaka and Qinghai Lake. These two lakes have contrasting salinity and pH: slightly saline (12 g/L) and alkaline (9.3) for Qinghai Lake and hypersaline (325 g/L) but neutral pH (7.4) for Chaka Lake. We have taken an integrated approach combining geochemistry, molecular phylogeny (both DNA and RNA based, both 16S rRNA and amoA gene), quantitative PCR (total Bacteria, Archaea, total crenarchaeota, AOA, and AOB), and cultivation and isolation. Both lake water and sediments have been analyzed. The results are divided into four chapters and they are summarized below. In addition, I also studied microbial communities and functions in sediments from South China Sea, a potential site for gas hydrate deposits. This work was done as extra add-on to the microbial ecology studies in Titeban lakes.
Author: Zheng Mianping
Publisher: Springer Science & Business Media
ISBN: 9401154589
Category : Science
Languages : en
Pages : 325
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Book Description
Since 1956 the author has been making extensive and detailed investigations of saline lakes on the Qinghai-Tibet plateau. On the basis of large amounts of reliable first-hand data and multidisciplinary analysis, the book deals with the temporal-spatial evolution of the plateau saline lakes and the prospects for inorganic salts and organic resources and their exploitation and protection, as well as the relationships between saline lakes and global changes. This book is the first English monograph on saline lakes on the Qinghai-Tibet Plateau - the `Roof of the World'. Compared with books about saline lakes in other areas of the world, this monograph is written in a multidisciplinary, comprehensive and systematic way. It may be used by graduate students, teachers, researchers, field geologists and engineers as a reference book in research, teaching, etc.
Author:
Publisher: ScholarlyEditions
ISBN: 1464964572
Category : Science
Languages : en
Pages : 1409
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Book Description
Issues in Life Sciences: Muscle, Membrane, and General Microbiology: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Life Sciences—Muscle, Membrane, and General Microbiology. The editors have built Issues in Life Sciences: Muscle, Membrane, and General Microbiology: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Life Sciences—Muscle, Membrane, and General Microbiology in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Life Sciences: Muscle, Membrane, and General Microbiology: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Author: Zhang Chengjun
Publisher: Frontiers Media SA
ISBN: 2832504035
Category : Science
Languages : en
Pages : 269
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 902
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Book Description
Author: Nicole Kay Berzins
Publisher:
ISBN:
Category : Biotic communities
Languages : en
Pages : 23
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Book Description
Saline lakes at high altitudes represent an important and extreme microbial ecosystem, yet little is known about microbial diversity in such environments. The objective of this study was to examine the change of microbial diversity from the bottom of the lake to sediments from Qinghai Lake and the two sister lakes, Erhai and Garhi Lake in China. The lakes are saline and alkaline and are located on the Qinghai-Tibetan Plateau at an altitude of 3196 m above sea level. An interdisciplinary approach was taken in this long term study and specifically this report provides in depth laboratory cultivation and enrichment procedures along with field results. This data was used to assess microbial communities in the lake ecosystems and better understand the bacterial responses to climatic and environmental changes of Qinghai Lake.
Author:
Publisher: ScholarlyEditions
ISBN: 1464963711
Category : Science
Languages : en
Pages : 2848
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Book Description
Issues in Biological, Biochemical, and Evolutionary Sciences Research: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Biological, Biochemical, and Evolutionary Sciences Research. The editors have built Issues in Biological, Biochemical, and Evolutionary Sciences Research: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Biological, Biochemical, and Evolutionary Sciences Research in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Biological, Biochemical, and Evolutionary Sciences Research: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Author: J. M. Melack
Publisher: Springer My Copy UK
ISBN:
Category : Limnology
Languages : en
Pages : 316
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Book Description
Author: Yildirim Dilek
Publisher: Springer Science & Business Media
ISBN: 1402083068
Category : Science
Languages : en
Pages : 359
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Book Description
Microbial systems in extreme environments and in the deep biosphere may be analogous to potential life on other planetary bodies and hence may be used to investigate the possibilities of extraterrestrial life. This book examines the mode and nature of links between geological processes and microbial activities and their significance for the origin and evolution of life on the Earth and possibly on other planets. This is a truly interdisciplinary science with societal relevance.
Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 1436
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Book Description
