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Accounting For Spatial And Temporal Variation In Bacterial Communities In Wisconsin Lakes
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Book Synopsis Accounting for Spatial and Temporal Variation in Bacterial Communities in Wisconsin Lakes by : Anthony Carmen Yannarell
Download or read book Accounting for Spatial and Temporal Variation in Bacterial Communities in Wisconsin Lakes written by Anthony Carmen Yannarell and published by . This book was released on 2004 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Limnology News written by and published by . This book was released on 1967 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Detection of Spatial and Temporal Trends in Wisconsin Lake Water Clarity Using Landsat-derived Estimates of Secchi Depth by : Scott D. Peckham
Download or read book Detection of Spatial and Temporal Trends in Wisconsin Lake Water Clarity Using Landsat-derived Estimates of Secchi Depth written by Scott D. Peckham and published by . This book was released on 2005 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental, Spatial and Temporal Effects on Microbial Composition in Lake Erie by : Anna Kathleen Ormiston
Download or read book Environmental, Spatial and Temporal Effects on Microbial Composition in Lake Erie written by Anna Kathleen Ormiston and published by . This book was released on 2016 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through close interactions with biotic and abiotic environments, microbial communities in lakes mediate numerous biogeochemical processes that are essential in regional and global cycles of C, N and P. However, the relationship between bacterial community compositions and environmental conditions is still unclear. Lake Erie's natural gradient of nutrient supply and many other environmental parameters from the Sandusky Bay to the Central Basin provides an ideal experiment to examine how well bacterial community composition tracks environmental changes spatially and temporally. Surface water samples were collected along a transect that ran from the Sandusky Bay (hypereutrophic) via Sandusky Sub-basin (mesoeutrophic) to the Central Basin (oligotrophic) in June, July and August 2012. Zooplankton sample were also collected at each basin in June, July and August to see whether they respond to environmental conditions and to the changing bacterioplankton communities. Physico-chemical parameters were measured in situ. Bacterioplankton was collected on filters and filtrates were used for nutrient analyses, including ammonium, dissolved organic carbon, total dissolved nitrogen, nitrate, nitrite and soluble reactive phosphorus. Chlorophyll a concentration measurements confirmed the expected gradient of primary productivity among sites. Terminal restriction fragment length polymorphism (T-RFLP) analysis was conducted to compare of the microbial community structure and diversity along this natural gradient from the Sandusky Bay to the Central Basin. Additionally, zooplankton community structure and diversity was compared along the transect. Results showed that the free-living bacterioplankton structure differed significantly among sampling time, which was likely contributed by temporal variations in nutrient concentrations. As for the zooplankton community, Cyclopidae, Branchionidae and Synchaetidae were identified as major families (>78.4% of total zooplankton) in all samples. Zooplankton family structure had no clear separation based on site location on site location or sampling time. In addition, no significant correlation was identified between zooplankton community structure and environmental parameters or with zooplankton community structure and bacterioplankton community structure. Zooplankton diversity tests revealed significant differences in zooplankton diversity among sites and months. This research contributes a better understanding of the zooplankton and bacteria community structure found in Lake Erie. Along with this natural nutrient gradient found in Lake Erie, harmful cyanobacterial blooms (cyanoHABS) is also a serious issue that affects wildlife, human health, recreation and local economics. CyanoHABs produce cyanotoxins, such as microcystins that lead to skin irritation, illness and liver tumors. Natural bacterial degradation of these microcystins play a key role in lakes by transforming these harmful toxins to less harmful metabolites that can be consumed by other organisms without a detrimental affect on their health and ecosystem health. Microcystin-LR is a toxin produced in harmful cyanobacteria blooms in Lake Erie and in Grand Lake St. Marys. This experiment specifically compared bacterial community structure and diversity from lakes with previous CyanoHAB exposure and their response to amended Microcystin-LR levels. Water samples were collected in June 2012 in the western basin, Sandusky sub-basin and central basin of Lake Erie and three recreational sites in Grand Lake St. Mary’s. Particulate-associated bacterioplankton was filtered out of the water samples, and the remaining filtrate was starved of all carbon and incubated in the dark for 1 week. After incubation, water samples were divided into triplicate microcosms. Microcystin-LR additions were added to the water samples as the sole carbon source for the naturally existing bacterioplankton community. After the microcystin-LR addition cell counts and microcystin concentrations were measure every 24 hours for two days. T-RFLP analysis was conducted to compare original bacterial community structure and diversity for each site to the Microcystin-LR amended bacterial community structure and diversity. Significant differences between start and end MC-LR concentrations (p 0.05) measured in the incubation experiment indicated MC-LR degradation. Shannon diversity indices for bacterioplankton T-RF percent abundances were not significantly different between treatments for both lakes (ANOVA, p 0.05). T-RFLP results showed that bacterioplankton community structures were significantly different between microcystin amended and original free-living bacterioplankton communities for Grand Lake St. Mary samples, but there was no significant difference between community structure for MC-amended treatments and non amended controls. In contrast, Lake Erie’s MC-amended communities experienced no shift in community structure. Non-amended controls had natural occurring MC-concentration, which suggests that there is a large subset of bacterioplankton that could degrade MC-LR before the treatments were administered. The extensive CyanoHAB history found in both lakes can explain these results. There are two dominating cyanobacterial species in Grand Lake St. Mary’s and four in Lake Erie, which suggests that these differences may affect the differences in MC degraders found in both lakes and the overall bacterioplankton community structure. Evidence of MC-degradation could be explained by bacterioplankton using MC-LR as an energy source.
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 Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1985 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Can J Microbiol written by and published by . This book was released on 2013 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Freshwater Microbiology by : Suhaib A. Bandh
Download or read book Freshwater Microbiology written by Suhaib A. Bandh and published by Academic Press. This book was released on 2019-08-01 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater Microbiology: Perspectives of Bacterial Dynamics in Lake Ecosystems provides a comprehensive and systematic analysis of microbial ecology in lakes. It offers basic information on how well the bacterial community composition varies along the spatio-temporal and trophic gradients along with the evaluation of the bioindicator species of bacteria so as to act as a key to predict the trophic status of lake ecosystems. The book helps to identify the factors of potential importance in structuring the bacterial communities in lakes as it delves into the dynamics and diversity of bacterial community composition in relation to various water quality parameters. It helps to identify the possibility of bioremediation plans and devising future policy decisions, with better conservation and management practices. Provides a comprehensive and systematic analysis of microbial ecology Helps to identify the factors of potential importance in structuring the bacterial community composition Gives insight into the bacterial diversity of freshwater lake ecosystems along with their industrial potential Caters to the needs and aspirations of students and professional researchers
Book Synopsis Bioindicators for Assessing Ecological Integrity of Prairie Wetlands by : Paul R. Adamus
Download or read book Bioindicators for Assessing Ecological Integrity of Prairie Wetlands written by Paul R. Adamus and published by . This book was released on 1996 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Soils of Wisconsin by : James G. Bockheim
Download or read book The Soils of Wisconsin written by James G. Bockheim and published by Springer. This book was released on 2017-02-25 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an up-to-date and comprehensive report on the soils of Wisconsin, a state that offers a rich tapestry of soils. It discusses the relevant soil forming factors and soil processes in detail and subsequently reviews the main soil regions and dominant soil orders, including paleosols and endemic and endangered soils. The last chapters address soils in a changing climate and provide an evaluation of their monetary value and crop yield potential. Richly illustrated, the book offers both a valuable teaching resource and essential guide for policymakers, land users, and all those interested in the soils of Wisconsin.
Book Synopsis Water Quality Assessments by : Deborah V Chapman
Download or read book Water Quality Assessments written by Deborah V Chapman and published by CRC Press. This book was released on 1996-08-22 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guidebook, now thoroughly updated and revised in its second edition, gives comprehensive advice on the designing and setting up of monitoring programmes for the purpose of providing valid data for water quality assessments in all types of freshwater bodies. It is clearly and concisely written in order to provide the essential information for all agencies and individuals responsible for the water quality.
Book Synopsis Environmental Toxicology and Chemistry by :
Download or read book Environmental Toxicology and Chemistry written by and published by . This book was released on 1999 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Social Biology of Microbial Communities by : Institute of Medicine
Download or read book The Social Biology of Microbial Communities written by Institute of Medicine and published by National Academies Press. This book was released on 2013-01-10 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with the germ theory of disease in the 19th century and extending through most of the 20th century, microbes were believed to live their lives as solitary, unicellular, disease-causing organisms . This perception stemmed from the focus of most investigators on organisms that could be grown in the laboratory as cellular monocultures, often dispersed in liquid, and under ambient conditions of temperature, lighting, and humidity. Most such inquiries were designed to identify microbial pathogens by satisfying Koch's postulates.3 This pathogen-centric approach to the study of microorganisms produced a metaphorical "war" against these microbial invaders waged with antibiotic therapies, while simultaneously obscuring the dynamic relationships that exist among and between host organisms and their associated microorganisms-only a tiny fraction of which act as pathogens. Despite their obvious importance, very little is actually known about the processes and factors that influence the assembly, function, and stability of microbial communities. Gaining this knowledge will require a seismic shift away from the study of individual microbes in isolation to inquiries into the nature of diverse and often complex microbial communities, the forces that shape them, and their relationships with other communities and organisms, including their multicellular hosts. On March 6 and 7, 2012, the Institute of Medicine's (IOM's) Forum on Microbial Threats hosted a public workshop to explore the emerging science of the "social biology" of microbial communities. Workshop presentations and discussions embraced a wide spectrum of topics, experimental systems, and theoretical perspectives representative of the current, multifaceted exploration of the microbial frontier. Participants discussed ecological, evolutionary, and genetic factors contributing to the assembly, function, and stability of microbial communities; how microbial communities adapt and respond to environmental stimuli; theoretical and experimental approaches to advance this nascent field; and potential applications of knowledge gained from the study of microbial communities for the improvement of human, animal, plant, and ecosystem health and toward a deeper understanding of microbial diversity and evolution. The Social Biology of Microbial Communities: Workshop Summary further explains the happenings of the workshop.
Book Synopsis Freshwater Microbiology by : David C. Sigee
Download or read book Freshwater Microbiology written by David C. Sigee and published by John Wiley & Sons. This book was released on 2005-09-27 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique textbook takes a broad look at the rapidly expanding field of freshwater microbiology. Concentrating on the interactions between viruses, bacteria, algae, fungi and micro-invertebrates, the book gives a wide biological appeal. Alongside conventional aspects such as phytoplankton characterisation, seasonal changes and nutrient cycles, the title focuses on the dynamic and applied aspects that are not covered within the current textbooks in the field. Complete coverage of all fresh water biota from viruses to invertebrates Unique focus on microbial interactions including coverage of biofilms, important communities on all exposed rivers and lakes. New information on molecular and microscopical techniques including a study of gene exchange between bacteria in the freshwater environment. Unique emphasis on the applied aspects of freshwater microbiology with particular emphasis on biodegradation and the causes and remediation of eutrophication and algal blooms.
Download or read book Oceanic Abstracts written by and published by . This book was released on 1994-10 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biogeochemistry of Wetlands by : K. Ramesh Reddy
Download or read book Biogeochemistry of Wetlands written by K. Ramesh Reddy and published by CRC Press. This book was released on 2022-09-10 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: The globally important nature of wetland ecosystems has led to their increased protection and restoration as well as their use in engineered systems. Underpinning the beneficial functions of wetlands are a unique suite of physical, chemical, and biological processes that regulate elemental cycling in soils and the water column. This book provides an in-depth coverage of these wetland biogeochemical processes related to the cycling of macroelements including carbon, nitrogen, phosphorus, and sulfur, secondary and trace elements, and toxic organic compounds. In this synthesis, the authors combine more than 100 years of experience studying wetlands and biogeochemistry to look inside the black box of elemental transformations in wetland ecosystems. This new edition is updated throughout to include more topics and provide an integrated view of the coupled nature of biogeochemical cycles in wetland systems. The influence of the elemental cycles is discussed at a range of scales in the context of environmental change including climate, sea level rise, and water quality. Frequent examples of key methods and major case studies are also included to help the reader extend the basic theories for application in their own system. Some of the major topics discussed are: Flooded soil and sediment characteristics Aerobic-anaerobic interfaces Redox chemistry in flooded soil and sediment systems Anaerobic microbial metabolism Plant adaptations to reducing conditions Regulators of organic matter decomposition and accretion Major nutrient sources and sinks Greenhouse gas production and emission Elemental flux processes Remediation of contaminated soils and sediments Coupled C-N-P-S processes Consequences of environmental change in wetlands# The book provides the foundation for a basic understanding of key biogeochemical processes and its applications to solve real world problems. It is detailed, but also assists the reader with box inserts, artfully designed diagrams, and summary tables all supported by numerous current references. This book is an excellent resource for senior undergraduates and graduate students studying ecosystem biogeochemistry with a focus in wetlands and aquatic systems.
