Microbial Diversity in Baltic Sea Sediments

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ISBN 13 : 9789157673251
Total Pages : 36 pages
Book Rating : 4.6/5 (732 download)

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Book Synopsis Microbial Diversity in Baltic Sea Sediments by : Anna Edlund

Download or read book Microbial Diversity in Baltic Sea Sediments written by Anna Edlund and published by . This book was released on 2007 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on microbial community structures and their functions in Baltic Sea sediments. First we investigated the distribution of archaea and bacteria in Baltic Sea sediments along a eutrophication gradient. Community profile analysis of 16S rRNA genes using terminal restriction length polymorphism (T-RFLP) indicated that archaeal and bacterial communities were spatially heterogeneous. By employing statistical ordination methods we observed that archaea and bacteria were structured and impacted differently by environmental parameters that were significantly linked to eutrophication. In a separate study, we analyzed bacterial communities at a different site in the Baltic Sea that was heavily contaminated with polyaromatic hydrocarbons (PAHs) and several other pollutants. Sediment samples were collected before and after remediation by dredging in two consecutive years. A polyphasic experimental approach was used to assess growing bacteria and degradation genes in the sediments. The bacterial communities were significantly different before and after dredging of the sediment. Several isolates collected from contaminated sediments showed an intrinsic capacity for degradation of phenanthrene (a PAH model compound). Quantititative real-time PCR was used to monitor the abundance of degradation genes in sediment microcosms spiked with phenanthrene. Although both xylE and phnAc genes increased in abundance in the microcosms, the isolates only carried phnAc genes. Isolates with closest 16S rRNA gene sequence matches to Exigobacterium oxidotolerans, a Pseudomonas sp. and a Gammaproteobacterium were identified by all approaches used as growing bacteria that are capable of phenanthrene degradation. These isolates were assigned species and strain designations as follows: Exiguobacterium oxidotolerans AE3, Pseudomonas fluorescens AE1 and Pseudomonas migulae AE2. We also identified and studied the distribution of actively growing bacteria along red-ox profiles in Baltic Sea sediments. Community structures were found to be significantly different at different red-ox depths. Also, according to multivariate statistical ordination analysis organic carbon, nitrogen, and red-ox potential were crucial parameters for structuring the bacterial communities on a vertical scale. Novel lineages of bacteria were obtained by sequencing 16S rRNA genes from different red-ox depths and sampling stations indicating that bacterial diversity in Baltic Sea sediments is largely unexplored.

Microbial Diversity in the Genomic Era

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Publisher : Elsevier
ISBN 13 : 0443133212
Total Pages : 840 pages
Book Rating : 4.4/5 (431 download)

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Book Synopsis Microbial Diversity in the Genomic Era by : Surajit Das

Download or read book Microbial Diversity in the Genomic Era written by Surajit Das and published by Elsevier. This book was released on 2024-03-23 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Diversity in the Genomic Era, Second Edition presents techniques used for microbial taxonomy and phylogeny, along with their applications and respective strengths and challenges. Though many advanced techniques for the identification of unknown bacterium are available in the genomic era, a far fewer number of the total microbial species have been discovered and identified to date. With that in mind, this book incorporates recently developed biosystematics methods and approaches to assess microbial taxonomy, with suitable recommendations for where to apply them across the range of bacterial identification and infectious disease research. Here, international researchers in the field first provide a broad overview of microbial genomics research and microbiome directed medicine, followed by sections on molecular tools for microbial diversity research, extremophilic microbial diversity, functional microbial diversity across application areas, microbial diversity and infectious disease research, and future directions for research. Step-by-step methodologies are provided for key techniques, along with applied case studies breaking down recent research studies into the practical components, illuminating pathways for new studies across the field. This new edition has been fully updated to address advances in the field of microbiome directed medicine, and whole genome sequencing for studying microbial diversity, considering both recent technological advances and new applications areas, from extremophile studies to the latest approaches in human microbiome analysis. Instructs in techniques used for microbial taxonomy and phylogeny, with discussions of their applications and respective pros and cons Reviews the evolving field of microbial typing and the genomic technologies that enable comparative metagenomic analysis of complex microbial environments Covers microbiome directed translational research, as well as whole genome sequencing for studying microbial diversity, with newly added research protocols and case studies Reviews future applications in the field of microbiome directed medicine Features chapter contributions from global experts in the field

Microbial Diversity and Community Composition in the Open Ocean and Marine Sediment

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Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.5/5 (381 download)

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Book Synopsis Microbial Diversity and Community Composition in the Open Ocean and Marine Sediment by : Zachary Adam Kerrigan

Download or read book Microbial Diversity and Community Composition in the Open Ocean and Marine Sediment written by Zachary Adam Kerrigan and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Ecology of Marine Sediments

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Publisher : Cambridge University Press
ISBN 13 : 9780521235532
Total Pages : 204 pages
Book Rating : 4.2/5 (355 download)

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Book Synopsis The Ecology of Marine Sediments by : Gray

Download or read book The Ecology of Marine Sediments written by Gray and published by Cambridge University Press. This book was released on 1981-06-04 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Extremophiles as Astrobiological Models

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Publisher : John Wiley & Sons
ISBN 13 : 1119591686
Total Pages : 416 pages
Book Rating : 4.1/5 (195 download)

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Book Synopsis Extremophiles as Astrobiological Models by : Joseph Seckbach

Download or read book Extremophiles as Astrobiological Models written by Joseph Seckbach and published by John Wiley & Sons. This book was released on 2021-01-13 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The data in this book are new or updated, and will serve also as Origin of Life and evolutionary studies. Endospores of bacteria have a long history of use as model organisms in astrobiology, including survival in extreme environments and interplanetary transfer of life. Numerous other bacteria as well as archaea, lichens, fungi, algae and tiny animals (tardigrades, or water bears) are now being investigated for their tolerance to extreme conditions in simulated or real space environments. Experimental results from exposure studies on the International Space Station and space probes for up to 1.5 years are presented and discussed. Suggestions for extaterrestrial energy sources are also indicated. Audience Researchers and graduate students in microbiology, biochemistry, molecular biology and astrobiology, as well as anyone interested in the search for extraterrestrial life and its technical preparations.

Biogeochemistry of Intertidal Sediments

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Publisher : Cambridge University Press
ISBN 13 : 0521483069
Total Pages : 209 pages
Book Rating : 4.5/5 (214 download)

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Book Synopsis Biogeochemistry of Intertidal Sediments by : T. D. Jickells

Download or read book Biogeochemistry of Intertidal Sediments written by T. D. Jickells and published by Cambridge University Press. This book was released on 1997-06-13 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1997, this is an important book for environmental scientists studying the ecologically important saltmarshes and intertidal muds.

Microbial Diversity and Ecosystem Functioning in Fragmented Rivers Worldwide

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Publisher : Frontiers Media SA
ISBN 13 : 2832539874
Total Pages : 188 pages
Book Rating : 4.8/5 (325 download)

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Book Synopsis Microbial Diversity and Ecosystem Functioning in Fragmented Rivers Worldwide by : Lunhui Lu

Download or read book Microbial Diversity and Ecosystem Functioning in Fragmented Rivers Worldwide written by Lunhui Lu and published by Frontiers Media SA. This book was released on 2023-11-27 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dams or barriers are among the most significant anthropogenic threats to global freshwater ecosystems, although they provide invaluable services for shipping, hydropower generation, flood protection, and storage of drinking and irrigation water. River fragmentations due to dams and barriers lead the aquatic landscape into isolated river sections, resulting in hydromorphological discontinuities along longitudinal or lateral gradients. Fragmented river habitats are unstable. They experience uncertain disturbances in both time and space with random and complex hydrological and environmental processes, such as water flow, particulate matter sedimentation, reservoir regulation, and terrestrial input. The diversity, composition, functionality, and activity of microbial communities are important indicators of river ecosystem functions and services. Yet, river fragmentations are likely to disrupt and reconstruct microbial communities, redirecting the patterns of biogeochemical cycles of biogenic elements. Methodology, such as mathematical models, is still limited to describing and elucidating microbial processes under changing hydrological environments in the fragmented rivers. Thus, how do the riverine microbial communities and ecosystem functions respond to the fragmentation in rivers? This Research Topic represents a collective focus on microbial ecology, functional diversity, and new microbial modeling in fragmented rivers. We wish to present new findings in community assembly mechanisms, biotic interactions, functional diversity, and ecosystem functioning responses to the river fragmentations. New perspectives will also provide us with deep insights into the ecological effects of river fragmentation. This Research Topic aims to present the original research articles and reviews to provide new findings on microbial diversity and ecosystem functioning in fragmented rivers worldwide. We welcome original research, reviews, mini-reviews, opinions, methods, hypotheses and theories, and perspectives. The directions include but are not limited to the following aspects: - The continuum of the microbial community in responses to dams or barriers. - Novel microbial community assembly mechanisms, functional traits, and biotic interactions in fragmented rivers at local, regional, and global scales. - Functional genes, functional groups, and functional diversity in driving biogenic element cycles. - Mathematical modeling in aquatic microbial ecology.

Marine Metagenomics

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Publisher : Springer
ISBN 13 : 9811381348
Total Pages : 271 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Marine Metagenomics by : Takashi Gojobori

Download or read book Marine Metagenomics written by Takashi Gojobori and published by Springer. This book was released on 2019-07-24 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state-of-art marine metagenome research and explains the method of marine metagenomic analysis in an easy-to-understand manner. Changes in the marine environment due to global warming and pollution have become a major global problem. Maintaining a healthy marine ecosystem requires advanced environmental monitoring and assessment systems. As such, the book presents a novel metagenomic monitoring method, which has been developed for comprehensive analyses of the DNA of microorganisms living in seawater to further our understanding of the dynamics of the marine environment. The book can be used as a primer for new researchers and as a manual on experimental methods.

Microbes from Marine Distinctive Environments

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Publisher : Frontiers Media SA
ISBN 13 : 2832541704
Total Pages : 244 pages
Book Rating : 4.8/5 (325 download)

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Book Synopsis Microbes from Marine Distinctive Environments by : Shan He

Download or read book Microbes from Marine Distinctive Environments written by Shan He and published by Frontiers Media SA. This book was released on 2023-12-18 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Environmental Microbial Biotechnology

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Publisher : Springer
ISBN 13 : 3319190180
Total Pages : 340 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Environmental Microbial Biotechnology by : Lala Behari Sukla

Download or read book Environmental Microbial Biotechnology written by Lala Behari Sukla and published by Springer. This book was released on 2015-07-15 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a timely review of strategies for coping with polluted ecosystems by employing bacteria, fungi and algae. It presents the vast variety of microbial technologies currently applied in the bioremediation of a variety of anthropogenic toxic chemicals, mining and industrial wastes and other pollutants. Topics covered include: microbe-mineral interactions, biosensors in environmental monitoring, iron-mineral transformation, microbial biosurfactants, bioconversion of cotton gin waste to bioethanol, anaerobe bioleaching and sulfide oxidation. Further chapters discuss the effects of pollution on microbial diversity, as well as the role of microbes in the bioremediation of abandoned mining areas, industrial and horticultural wastes, wastewater and sites polluted with hydrocarbons, heavy metals, manganese and uranium.

Ecology of Marine Sediments

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Publisher : Oxford University Press
ISBN 13 : 0198569025
Total Pages : 250 pages
Book Rating : 4.1/5 (985 download)

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Book Synopsis Ecology of Marine Sediments by : John S. Gray

Download or read book Ecology of Marine Sediments written by John S. Gray and published by Oxford University Press. This book was released on 2009-01-22 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine sediments are the second largest habitat on earth and yet are poorly understood. This book gives a broad coverage of the central topics in the ecology of soft sediments.

Biological Oceanography of the Baltic Sea

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Publisher : Springer Science & Business Media
ISBN 13 : 9400706685
Total Pages : 696 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Biological Oceanography of the Baltic Sea by : Pauline Snoeijs-Leijonmalm

Download or read book Biological Oceanography of the Baltic Sea written by Pauline Snoeijs-Leijonmalm and published by Springer Science & Business Media. This book was released on 2017-04-04 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive science-based textbook on the biology and ecology of the Baltic Sea, one of the world’s largest brackish water bodies. The aim of this book is to provide students and other readers with knowledge about the conditions for life in brackish water, the functioning of the Baltic Sea ecosystem and its environmental problems and management. It highlights biological variation along the unique environmental gradients of the brackish Baltic Sea Area (the Baltic Sea, Belt Sea and Kattegat), especially those in salinity and climate. pt;font-family:"Arial","sans-serif"; color:#262626">The first part of the book presents the challenges for life processes and ecosystem dynamics that result from the Baltic Sea’s highly variable recent geological history and geographical isolation. The second part explains interactions between organisms and their environment, including biogeochemical cycles, patterns of biodiversity, genetic diversity and evolution, biological invasions and physiological adaptations. In the third part, the subsystems of the Baltic Sea ecosystem – the pelagic zone, the sea ice, the deep soft sea beds, the phytobenthic zone, the sandy coasts, and estuaries and coastal lagoons – are treated in detail with respect to the structure and function of communities and habitats and consequences of natural and anthropogenic constraints, such as climate change, discharges of nutrients and hazardous substances. Finally, the fourth part of the book discusses monitoring and ecosystem-based management to deal with contemporary and emerging threats to the ecosystem’s health.

Taxonomic diversity and metabolic activity of microbial communities in the water column of the central Baltic Sea

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (77 download)

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Book Synopsis Taxonomic diversity and metabolic activity of microbial communities in the water column of the central Baltic Sea by : M.G. HOFLE

Download or read book Taxonomic diversity and metabolic activity of microbial communities in the water column of the central Baltic Sea written by M.G. HOFLE and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Active Bacterial Community Structure Along Vertical Redox Gradients in Baltic Sea Sediment

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Active Bacterial Community Structure Along Vertical Redox Gradients in Baltic Sea Sediment by :

Download or read book Active Bacterial Community Structure Along Vertical Redox Gradients in Baltic Sea Sediment written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Community structures of active bacterial populations were investigated along a vertical redox profile in coastal Baltic Sea sediments by terminal-restriction fragment length polymorphism (T-RFLP) and clone library analysis. According to correspondence analysis of T-RFLP results and sequencing of cloned 16S rRNA genes, the microbial community structures at three redox depths (179 mV, -64 mV and -337 mV) differed significantly. The bacterial communities in the community DNA differed from those in bromodeoxyuridine (BrdU)-labeled DNA, indicating that the growing members of the community that incorporated BrdU were not necessarily the most dominant members. The structures of the actively growing bacterial communities were most strongly correlated to organic carbon followed by total nitrogen and redox potentials. Bacterial identification by sequencing of 16S rRNA genes from clones of BrdU-labeled DNA and DNA from reverse transcription PCR (rt-PCR) showed that bacterial taxa involved in nitrogen and sulfur cycling were metabolically active along the redox profiles. Several sequences had low similarities to previously detected sequences indicating that novel lineages of bacteria are present in Baltic Sea sediments. Also, a high number of different 16S rRNA gene sequences representing different phyla were detected at all sampling depths.

The Boka Kotorska Bay Environment

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Publisher : Springer
ISBN 13 : 3319516140
Total Pages : 608 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis The Boka Kotorska Bay Environment by : Aleksandar Joksimović

Download or read book The Boka Kotorska Bay Environment written by Aleksandar Joksimović and published by Springer. This book was released on 2017-03-26 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on environmental aspects of Boka Kotorska Bay in Montenegro (South Adriatic Sea), an area that has been shaped by seasonal tourism, and explores the use and limitations of its natural resources. The individual chapters highlight its geographic and oceanographic characteristics, climate, history and development, biology, fisheries, agriculture, coastal zones, shipping, marine tourism and pollution. Above all, the environmental impact of tourism on marine, coastal and shoreline areas and the resulting conflicts are discussed in detail. The volume is intended for specialists working in various fields of environmental sciences and ecology, water resources and management, land reclamation and agriculture, and regional climate change.

Microbial Communities of Coastal Eutrophic Systems

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Publisher : Frontiers Media SA
ISBN 13 : 2889719073
Total Pages : 161 pages
Book Rating : 4.8/5 (897 download)

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Book Synopsis Microbial Communities of Coastal Eutrophic Systems by : Savvas Genitsaris

Download or read book Microbial Communities of Coastal Eutrophic Systems written by Savvas Genitsaris and published by Frontiers Media SA. This book was released on 2021-12-31 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The metabolic pathways and environmental controls of hydrocarbon biodegradation in marine ecosystems

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Publisher : Frontiers Media SA
ISBN 13 : 2889193462
Total Pages : 196 pages
Book Rating : 4.8/5 (891 download)

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Book Synopsis The metabolic pathways and environmental controls of hydrocarbon biodegradation in marine ecosystems by : Joel E. Kostka

Download or read book The metabolic pathways and environmental controls of hydrocarbon biodegradation in marine ecosystems written by Joel E. Kostka and published by Frontiers Media SA. This book was released on 2015-05-15 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biodegradation mediated by indigenous microbial communities is the ultimate fate of the majority of oil hydrocarbon that enters the marine environment. The aim of this Research Topic is to highlight recent advances in our knowledge of the pathways and controls of microbially-catalyzed hydrocarbon degradation in marine ecosystems, with emphasis on the response of microbial communities to the Deepwater Horizon oil spill in the Gulf of Mexico. In this Research Topic, we encouraged original research and reviews on the ecology of hydrocarbon-degrading bacteria, the rates and mechanisms of biodegradation, and the bioremediation of discharged oil under situ as well as near in situ conditions.