The Effect Of Protozoan Grazers On The Cycling Of Polychlorinated Biphenyls Pcbs In Marine Systems
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The Effect Of Protozoan Grazers On The Cycling Of Polychlorinated Biphenyls Pcbs In Marine Systems
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Author : Elizabeth B. Kujawinski
language : en
Publisher:
Release Date : 2000
The Effect Of Protozoan Grazers On The Cycling Of Polychlorinated Biphenyls Pcbs In Marine Systems written by Elizabeth B. Kujawinski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Carbon cycle (Biogeochemistry) categories.
(Cont.) surface-active material in ciliate cultures was significantly higher than in flagellate cultures, and all protozoan cultures were higher than the bacterial control. Common headspace vessels were then used to compare and contrast the affinity of protozoan and bacterial culture filtrates (
The Effect Of Protozoan Grazers On The Cycling Of Polychlorinated Biphenyls Pcbs In Marine Systems
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Author :
language : en
Publisher:
Release Date : 2000
The Effect Of Protozoan Grazers On The Cycling Of Polychlorinated Biphenyls Pcbs In Marine Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
The Effects Of Protozoan Grazers On The Cycling Of Polychlorinated Biphenyls Pcbs In Marine Systems
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Author :
language : en
Publisher:
Release Date : 2000
The Effects Of Protozoan Grazers On The Cycling Of Polychlorinated Biphenyls Pcbs In Marine Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
The goal of this thesis was to understand how microbially-mediated recycling processes affect chiorobiphenyl (CB) cycling in marine systems by monitoring CB dynamics among organic carbon pools represented by dissolved organic matter, bacterial prey and phagotrophic protozoan grazers. When grazing and non-grazing protozoa were equilibrated with aqueous polychlorinated biphenyls (PCBs); no difference in equilibration time was observed, indicating that diffusion was the primary uptake pathway. The transition size of an organism where rates of diffusive and ingested uptake are equivalent was determined. Enhanced CB diffusive fluxes across the diffusive boundary layer were observed due to CB-DOC complex disassociation within this layer. Temporal dynamics of DOC, surfactants, lipo-polysaccharides and cells were monitored in protozoan cultures as a function of protozoan species and prey growth substrate. Production of surface-active material in ciliate cultures was significantly higher than in flagellate cultures, and all protozoan cultures were higher than the bacterial control. Affinities of protozoan and bacterial culture filtrates (
Dissertation Abstracts International
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Author :
language : en
Publisher:
Release Date : 2005
Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Dissertations, Academic categories.
The Marine Biogeochemistry Of Molybdenum
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Author : Caroline Beth Tuit
language : en
Publisher:
Release Date : 2003
The Marine Biogeochemistry Of Molybdenum written by Caroline Beth Tuit and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Marine sediments categories.
(Cont.) Mn oxides were not found to significantly influence either the dissolved or SPM Mo distribution. Dissolved Mo profiles from the Sargasso and Arabian Sea were conservative. However, dissolved Mo profiles from the Eastern Tropical Pacific showed both depletion and enrichment of dissolved Mo possibly associated with interaction of Mo with coastal sediments. Dissolved Mo profiles in several California Borderland Basins showed 1-2 nM Mo depletions below sill depth. A more focused study of water column response to sediment fluxes using the high precision Mo analyses is necessary to determine whether these phenomena are related.
Applied And Environmental Microbiology
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Author :
language : en
Publisher:
Release Date : 2000
Applied And Environmental Microbiology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Microbial ecology categories.
Ecological Impacts Of Toxic Chemicals
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Author : Francisco Sánchez-Bayo, Paul J. van den Brink, Reinier M. Mann
language : en
Publisher: Francisco Sanchez-Bayo
Release Date : 2011-09-09
Ecological Impacts Of Toxic Chemicals written by Francisco Sánchez-Bayo, Paul J. van den Brink, Reinier M. Mann and has been published by Francisco Sanchez-Bayo this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-09 with Nature categories.
Ecological Impacts of Toxic Chemicals presents a comprehensive, yet readable account of the known disturbances caused by all kinds of toxic chemicals on both aquatic and terrestrial ecosystems. Topics cover the sources of toxicants, their fate and distribution through the planet, their impacts on specific ecosystems, and their remediation by natural systems. Each chapter is written by well-known specialists in those areas, for the general public, students, and even scientists from outside this field. The book intends to raise awareness of the dangers of chemical pollution in a world dominated by industry and globalization of resources. Because the problems are widespread and far reaching, it is hoped that confronting the facts may prompt better management practices at industrial, agricultural and all levels of management, from local to governmental, so as to reduce the negative impacts of chemical contaminants on our planet.
Handbook Of Ecotoxicology
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Author : David J. Hoffman
language : en
Publisher: CRC Press
Release Date : 2002-11-13
Handbook Of Ecotoxicology written by David J. Hoffman and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-11-13 with Science categories.
Completely revised and updated with 18 new chapters, this second edition includes contributions from over 75 international experts. Also, a Technical Review Board reviewed all manuscripts for accuracy and currency. Focusing on toxic substance and how they affect the ecosystems worldwide, the book presents methods for quantifying and measuring ecotoxicological effects in the field and in the lab, as well as methods for estimating, predicting, and modeling in ecotoxicology studies. This is the definitive reference for students, researchers, consultants, and other professionals in the environmental sciences, toxicology, chemistry, biology, and ecology - in academia, industry, and government.
Dugong
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Author :
language : en
Publisher: UNEP/Earthprint
Release Date : 2002
Dugong written by and has been published by UNEP/Earthprint this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Nature categories.
The dugong (Dugong dugon) is the only herbivorous mammal that is strictly marine. It has a range spanning some 37 countries, including tropical and subtropical coastal and island waters. This plan presents a global overview of the status of the dugong and its management throughout its range. It contains information on dugong distribution and abundance, threatening processes, legislation, and existing and suggested research and management initiatives for the countries and territories in the dugong’s known range. It is hoped that the comparative information provided will enable individual countries to develop their own, more detailed, conservation plans.
Bioremediation And Biotechnology
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Author : Khalid Rehman Hakeem
language : en
Publisher: Springer Nature
Release Date : 2020-01-26
Bioremediation And Biotechnology written by Khalid Rehman Hakeem and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-26 with Science categories.
Toxic substances threatens aquatic and terrestrial ecosystems and ultimately human health. The book is a thoughtful effort in bringing forth the role of biotechnology for bioremediation and restoration of the ecosystems degraded by toxic and heavy metal pollution. The introductory chapters of the book deal with the understanding of the issues concerned with the pollution caused by toxic elements and heavy metals and their impacts on the different ecosystems followed by the techniques involved in monitoring of the pollution. These techniques include use of bio-indicators as well as modern techniques for the assessment and monitoring of toxicants in the environment. Detailed chapters discussing the role of microbial biota, aquatic plants, terrestrial plants to enhance the accumulation efficiency of these toxic and heavy metals are followed by remediation techniques involving myco-remediation, bio-pesticides, bio-fertilizers, phyto-remediation and rhizo-filtration. A sizable portion of the book has been dedicated to the advanced bio-remediation techniques which are finding their way from the laboratory to the field for revival of the degraded ecosystems. These involve bio-films, micro-algae, genetically modified plants and filter feeders. Furthermore, the book is a detailed comprehensive account for the treatment technologies from unsustainable to sustainable. We believe academicians, researchers and students will find this book informative as a complete reference for biotechnological intervention for sustainable treatment of pollution.