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Temporal And Spatial Variations In Bacterial Community Composition In The Mesohaline Potomac River
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Book Synopsis Temporal and Spatial Variations in Bacterial Community Composition in the Mesohaline Potomac River by : Jeanne M. Classen
Download or read book Temporal and Spatial Variations in Bacterial Community Composition in the Mesohaline Potomac River written by Jeanne M. Classen and published by . This book was released on 2004 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigating Bacterial Community Structure Over Temporal and Spatial Scales in the Northwest Atlantic Ocean by : Jackie Zorz
Download or read book Investigating Bacterial Community Structure Over Temporal and Spatial Scales in the Northwest Atlantic Ocean written by Jackie Zorz and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacteria are important members of every marine ecosystem and the composition of their communities has implications for global biogeochemical cycling. The Northwest Atlantic Ocean is an ecologically and economically significant region that exhibits wide ranges in physiochemical parameters that vary seasonally. In this thesis the bacterial community structure of two areas within the Northwest Atlantic Ocean, the Scotian Shelf and the Bedford Basin, were analyzed using 16S rRNA gene sequencing. The Scotian Shelf was analyzed spatially over two time points. Environmental parameters of the region, seasonality, and depth were found to heavily influence community structure. In the Bedford Basin, a weekly bacterial time series was established and the first year of data from the deepest samples were analyzed. The deep basin exhibited seasonal patterns with respect to community similarity, diversity, and composition. Overall, these datasets provide novel information regarding community composition and drivers of community shifts in this region.
Book Synopsis Bacterial Communities in a Northeast Ohio Stream by : Judith Ann Santmire
Download or read book Bacterial Communities in a Northeast Ohio Stream written by Judith Ann Santmire and published by . This book was released on 2005 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of bacterial communities in lotic biofilms can aid understanding of the processes driving their presence. Organic matter utilization, detritus availability, geomorphology and hydrodynamics, along with temporal and spatial variation are all influences on bacterial communities. The focus of this research was to examine factors affecting bacterial communities in a lotic ecosystem. Field studies and in situ experiments were completed in the West Branch of the Mahoning River in Northeast Ohio from October 2000 through August 2004. Total numbers of bacteria were determined via epifluorescent microscopy using DAPI stain. Additionally, fluorescently labeled taxon-specific probes were hybridized with cellular rRNA to determine the abundance of specific taxa. The Domain Bacteria, Proteobacteria (alpha and gamma groups), and Cytophaga-Flavobacterium were enumerated via epifluorescent microcopy. Multiple habitats (water, leaves and sediments) were compared during 2000-2001, and greatest stability in abundance was in the sediments. A second seasonal study during 2003-2004 focused on bacteria colonizing various size sediments and showed differences in abundance among the different size categories. Species-specific probes included Burkholderia cepacia (beta-Proteobacteria) and Acinetobacter calcoaceticus (gamma-Proteobacteria). Supporting physical and chemical data were also collected during field studies. Experiments examined the impact of sediment grain size on bacteria using glass beads of different diameters (0.1 mm, 1.0 mm, 5.0 mm) and unglazed ceramic tiles incubated in situ in packets made of plankton netting. Effects of incubation habitat (riffle versus pool) and organic matter addition (dried maple leaves) were tested. A microcosm experiment tested the premise that bacteria incubated in situ on one bead size would respond differently when inoculated onto a different bead size. The field surveys revealed temporal variation in communities in the various habitats, with more stability in the sediments. Natural and artificial substrata showed significant differences generally between the 0.1 mm and 5.0 mm beads or tiles. In most instances the community composition was fairly consistent. Of all taxa examined, B. cepacia was the least responsive to variations in environmental conditions. Surface area, did not entirely account for differences in abundance on the substrates; it is evident that other physical processes also affect utilization and abundance.
Book Synopsis Spatiotemporal Trends in Bacterial Diversity Across Three Watersheds Within the Platte River Basin, Nebraska by : Esther J. Perisho
Download or read book Spatiotemporal Trends in Bacterial Diversity Across Three Watersheds Within the Platte River Basin, Nebraska written by Esther J. Perisho and published by . This book was released on 2021 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: River bacteria are understudied despite being critical components of river ecosystems. There are even fewer studies considering bacteria communities at large spatiotemporal scales, which may provide insight into drivers of community assembly. We investigated differences in bacterial diversity across environmental gradients within three sub-basins nested in the Platte River Basin, Nebraska. Surface water samples were collected weekly at 36 sites from May to September by the Nebraska Department of Environment and Energy (NDEE) in 2019. Bacterial communities were sequenced using the Illumina MiSeq platform. Sub-basins had similar counts of unique amplicon sequence variants (ASVs) but different community structures. These structural differences were partially driven by environmental factors influenced by climate, land-use, and geomorphology. Two sub-basins exhibited shifts in community structure between early and late summer, but the third exhibited no clear temporal pattern. Relative abundances of typical and common freshwater genera like Flavobacterium contributed the most to structural differences between sub-basins. The most abundant genera across all subbasins included copiotrophs, suggesting that our study systems are nutrient-enriched. The trend in bacterial diversity observed in our study demonstrates the ecological relevance of considering bacterial diversity at large spatial and temporal scales.
Book Synopsis The Temporal Dynamics of the Bacterial Communities in Lake Matoaka, an Eutrophic, Freshwater Lake by : Dana Michelle Hardbower
Download or read book The Temporal Dynamics of the Bacterial Communities in Lake Matoaka, an Eutrophic, Freshwater Lake written by Dana Michelle Hardbower and published by . This book was released on 2011 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microbial Community Structure and Dynamics in the Colne Estuary, in Situ and in Response to Nutrient Amendment by :
Download or read book Microbial Community Structure and Dynamics in the Colne Estuary, in Situ and in Response to Nutrient Amendment written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Global Change and Baltic Coastal Zones by : Gerald Schernewski
Download or read book Global Change and Baltic Coastal Zones written by Gerald Schernewski and published by Springer Science & Business Media. This book was released on 2011-03-31 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change and ongoing transformation processes in economy and agriculture will have strong and multiple impacts in the Baltic region. In particular coastal zones face increasing hazards, e.g. due to sea level rise or changes in riverine nutrient loads and eutrophication. These changes also offer a wide range of new opportunities in the Baltic Region. Adaptation measures are needed but require a thorough and spatially differentiated understanding of underlying ecological, economic and social processes. Sixteen contributions by authors from eight countries give a comprehensive overview of these changes, their consequences and practical challenges with focus on coastal zones. Besides risks, the chances and opportunities of changes for the region are addressed and adaptation examples and strategies are given. The practitioners’ perspective and their demands are integrated in the various contributions.
Book Synopsis Tidal Freshwater Wetlands by : Aat Barendregt
Download or read book Tidal Freshwater Wetlands written by Aat Barendregt and published by . This book was released on 2009 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen Cycling in Coastal Marine Environments by : T. Henry Blackburn
Download or read book Nitrogen Cycling in Coastal Marine Environments written by T. Henry Blackburn and published by . This book was released on 1988-03-21 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen discharge to the coastal environment has been increasing, posing the threat of accelerated eutrofication. Considerable research has been conducted in recent years to examine the impact of the nitrogen loading in coastal ecosystems. Based on proceedings from a SCOPE symposium held at the University of Aarhus in July of 1985, this volume covers a variety of up-to-date developments in research on nitrogen cycling in coastal marine environments. Topics include the role of nitrogen in algal productivity, regeneration of nutrients in the water column and the sediments, and the flow of nitrogen in coastal ecosystems.
Book Synopsis Stress Effects on Natural Ecosystems by : Gary W. Barrett
Download or read book Stress Effects on Natural Ecosystems written by Gary W. Barrett and published by John Wiley & Sons. This book was released on 1981 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cyanobacterial Harmful Algal Blooms: State of the Science and Research Needs by : H. Kenneth Hudnell
Download or read book Cyanobacterial Harmful Algal Blooms: State of the Science and Research Needs written by H. Kenneth Hudnell and published by Springer Science & Business Media. This book was released on 2008-03-13 with total page 955 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the ever-increasing incidence of harmful cyanobacterial algal blooms, this monograph has added urgency and will be essential reading for all sorts of researchers, from neuroscientists to cancer research specialists. The volume contains the proceedings of the 2005 International Symposium on Cyanobacterial Harmful Algal Blooms, and has been edited by H. Kenneth Hudnell, of the US Environmental Protection Agency. It contains much of the most recent research into the subject.
Book Synopsis The Effects of Tropical Storm Agnes on the Chesapeake Bay Estuarine System by : Chesapeake Research Consortium
Download or read book The Effects of Tropical Storm Agnes on the Chesapeake Bay Estuarine System written by Chesapeake Research Consortium and published by . This book was released on 1975 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Copepods in Aquaculture by : Cheng-Sheng Lee
Download or read book Copepods in Aquaculture written by Cheng-Sheng Lee and published by John Wiley & Sons. This book was released on 2008-02-15 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of copepods in aquaculture has long been recognized, especially in the larval rearing of many marine fishes. This timely publication provides a single source of information on copepod biology, culture methods and practical use in marine finfish hatcheries. Originating out of a workshop held on copepods by the Oceanic Institute in Hawaii, this proceedings includes review articles and papers presented by leading international experts in copepod biology and aquaculture. It is a seminal work that integrates the most up-to-date information on selecting copepod species, effects of algal species on reproduction, ways to increase production, the nutritional value of copepods, behavioral characteristics of copepods, potential use of copepod nauplii and eggs, and their application to larval rearing of various marine finfish species.
Book Synopsis Nutrient Criteria Technical Guidance Manual by :
Download or read book Nutrient Criteria Technical Guidance Manual written by and published by . This book was released on 2000 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluating Water Quality to Prevent Future Disasters by :
Download or read book Evaluating Water Quality to Prevent Future Disasters written by and published by Academic Press. This book was released on 2019-05-24 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluating Water Quality to Prevent Future Disasters, volume 11 in the Separation Science and Technology series, covers various separation methods that can be used to avoid water catastrophes arising from climate change, arsenic, lead, algal bloom, fracking, microplastics, flooding, glyphosphates, triazines, GenX, and oil contamination. This book provides a valuable resource that will help the reader solve their potential water contamination problems and help them develop their own new approaches to monitor water contamination. Highlights reasons for potential water catastrophes Provides separation methods for monitoring water contamination Encourages development of new methods for monitoring water contamination
Book Synopsis The Structure and Function of Aquatic Microbial Communities by : Christon J. Hurst
Download or read book The Structure and Function of Aquatic Microbial Communities written by Christon J. Hurst and published by Springer. This book was released on 2019-05-13 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses how aquatic microbial communities develop interactive metabolic coordination both within and between species to optimize their energetics. It explains that microbial community structuration often includes functional stratification among a multitude of organisms that variously exist either suspended in the water, lodged in sediments, or bound to one another as biofilms on solid surfaces. The authors describe techniques that can be used for preparing and distributing microbiologically safe drinking water, which presents the challenge of successfully removing the pathogenic members of the aquatic microbial community and then safely delivering that water to consumers. Drinking water distribution systems have their own microbial ecology, which we must both understand and control in order to maintain the safety of the water supply. Since studying aquatic microorganisms often entails identifying them, the book also discusses techniques for successfully isolating and cultivating bacteria. As such, it appeals to microbiologists, microbial ecologists and water quality scientists.
Book Synopsis The Estuarine Ecosystem by : Donald S. McLusky
Download or read book The Estuarine Ecosystem written by Donald S. McLusky and published by OUP Oxford. This book was released on 2004-04-29 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the inhabitants of many of the world's major towns and cities, estuaries provide their first and nearest glimpse of a natural habitat. Despite the attempts of man to pollute or reclaim it, the estuarine ecosystem continues to provide a fascinating insight into a natural world where energy is transformed from sunlight into plant material, and then through the steps of a food chain is converted into a rich food supply for birds and fish. The book provides a concise readable introduction to estuarine ecology. First published in 1981, it soon established itself as the principle textbook of choice in the UK & NW Europe. This new edition builds upon the strengths of the earlier editions but has been thoroughly revised throughout. The new co-author brings a human impact dimension to the revised book. It is written for advanced undergraduate and graduate students (particularly taught masters) who have had a general ecology course, but no further training in estuarine science. It will be useful to both professional researchers and practical managers in marine ecology and environmental science who seek a compact but comprehensive introduction to estuarine ecology.
