Download or read book Macroinvertebrate Communities and Their Use as Biological Indicators of Stream Ecosystem Health written by Lucia Duso and published by . This book was released on 1996 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intermittent Rivers and Ephemeral Streams written by Thibault Datry and published by Academic Press. This book was released on 2017-07-11 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermittent Rivers and Ephemeral Streams: Ecology and Management takes an internationally broad approach, seeking to compare and contrast findings across multiple continents, climates, flow regimes, and land uses to provide a complete and integrated perspective on the ecology of these ecosystems. Coupled with this, users will find a discussion of management approaches applicable in different regions that are illustrated with relevant case studies. In a readable and technically accurate style, the book utilizes logically framed chapters authored by experts in the field, allowing managers and policymakers to readily grasp ecological concepts and their application to specific situations. Provides up-to-date reviews of research findings and management strategies using international examples Explores themes and parallels across diverse sub-disciplines in ecology and water resource management utilizing a multidisciplinary and integrative approach Reveals the relevance of this scientific understanding to managers and policymakers
Download or read book Use of Stream Biofilm Microbial Communities and Associated Metals as Indicators of Urban Runoff Impact on Freshwater Ecosystems written by Pierre-Yves Ancion and published by . This book was released on 2010 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The main focus of this project was to investigate how anthropogenic activities affect stream biofilm microbial communities and to assess the potential uses of biofilms as indicators of freshwater ecosystem health. The work improves our understanding of the impact of urbanisation on stream ecosystems and provides innovative techniques to assess this impact more accurately. Stream biofilms are the complex aggregation of microorganisms, covering almost every surface in freshwater environments. They play key roles in stream ecosystems and are grazed by many other organisms. Therefore, the potential impact of urbanisation on biofilm microbial communities could alter the functions of biofilms and affect the whole stream ecosystem. A wide range of experiments was conducted in both flow chamber microcosms and natural stream environments to investigate the impact of urban runoff on microbial community structure and composition. Using community fingerprinting techniques such as Terminal-Restriction Fragment Length Polymorphism and Automated Ribosomal Intergenic Spacer Analysis, as well as sequencing of bacterial 16S rRNA genes, we investigated changes occurring in biofilm bacterial and ciliate protozoan communities under exposure to urban contaminants. Flow chamber experiments revealed that significant differences in the structure of the microbial community could be detected within only a few days of exposure to urban runoff contaminants and remained detectable weeks after transfer to uncontaminated water. The rapid and persistent changes highlight the sensitivity of microbial communities and suggest that natural biofilm communities frequently exposed to urban runoff are significantly altered. Experiments carried out in natural streams confirmed the differences in composition and tolerance to contaminants between biofilm communities from preserved and impacted streams, suggesting critical implications for the whole stream ecosystem. The structure and composition of microbial communities associated with biofilms result from the influence of past and present environmental conditions and therefore constitute potential integrative indicators of stream health. Rapid changes in bacterial and ciliate community structure during exposure to metal contaminants demonstrated the sensitivity of these communities and their potential use as indicators of the influence of urban areas on stream ecosystem. Additional investigation conducted in natural streams indicated that bacterial and ciliate communities can reveal changes occurring along an urbanisation gradient and confirmed their reliable use as ecological bio-indicators. These novel indicators were implemented successfully to investigate the efficiency of an enclosed stormwater treatment system where traditional biological indicators such as benthic macroinvertebrates are not available. Results revealed the successful improvement of water through the treatment train and the minimal impact on the receiving creek. As biofilms are sessile structures, they may also accumulate urban contaminants and could form a critical link in the movement of urban contaminants from abiotic to biotic components of the stream. Therefore, the absorption and release rates of metals (Zn, Cu and Pb) in biofilms were investigated. Results revealed the fast accumulation of metals in the matrix during the first few days. High enrichment factors were recorded between the biofilm wet weight and the water, reaching 500:1 for zinc, 1500:1 for copper and 6000:1 for lead after 21 days of exposure. During recovery in uncontaminated water, metals were retained in the biofilm and 10 to 16 % of zinc and copper accumulated during exposure still remained in the biofilm after 14 days of recovery. The release of lead was even slower and more than 35 % of accumulated lead remained in the biofilm after 14 days of recovery. Investigation in natural streams confirmed the accumulation of metals in biofilms from urban streams and highlighted the potential risk for organisms at a higher trophic level. These results suggested that metals associated with biofilms could provide a highly relevant indicator of the presence of metals in freshwater systems at concentrations detrimental to aquatic biota. Using biofilm bacterial, ciliate and macro-invertebrate communities as bio-indicators, the relevance of biofilm associated metals (As, Cd, Cr, Cu, Pb, Ni and Zn) was investigated and compared to sediment associated metals. A greater proportion of the changes occurring in each of the communities could be explained by metal concentrations in biofilm than in sediments confirming the ecological relevance of biofilm associated metals. This project provides an insight into the effect of urban contaminants on stream microorganisms and contributes to the understanding of how urbanisation affects the entire stream ecosystem. Novel tools emerging from the use of biofilm as an indicator of stream health will assist land planners, aquatic resource managers and decision makers by facilitating better assessment of urban influences on aquatic environments"--Abstract.
Download or read book Biological Indicators of Water Quality written by A. James and published by John Wiley & Sons. This book was released on 1979 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Biological Indicators as an Index of Stream Health written by William Fowler and published by . This book was released on 1981 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods in Stream Ecology written by F. Richard Hauer and published by Academic Press. This book was released on 2011-04-27 with total page 894 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods in Stream Ecology, Second Edition, provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This updated edition reflects recent advances in the technology associated with ecological assessment of streams, including remote sensing. In addition, the relationship between stream flow and alluviation has been added, and a new chapter on riparian zones is also included. The book features exercises in each chapter; detailed instructions, illustrations, formulae, and data sheets for in-field research for students; and taxanomic keys to common stream invertebrates and algae. With a student-friendly price, this book is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology, and river ecology. This text is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology, and landscape ecology. Exercises in each chapter Detailed instructions, illustrations, formulae, and data sheets for in-field research for students Taxanomic keys to common stream invertebrates and algae Link from Chapter 22: FISH COMMUNITY COMPOSITION to an interactive program for assessing and modeling fish numbers
Download or read book Riverine Ecosystem Management written by Stefan Schmutz and published by Springer. This book was released on 2018-05-08 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book surveys the frontier of scientific river research and provides examples to guide management towards a sustainable future of riverine ecosystems. Principal structures and functions of the biogeosphere of rivers are explained; key threats are identified, and effective solutions for restoration and mitigation are provided. Rivers are among the most threatened ecosystems of the world. They increasingly suffer from pollution, water abstraction, river channelisation and damming. Fundamental knowledge of ecosystem structure and function is necessary to understand how human acitivities interfere with natural processes and which interventions are feasible to rectify this. Modern water legislation strives for sustainable water resource management and protection of important habitats and species. However, decision makers would benefit from more profound understanding of ecosystem degradation processes and of innovative methodologies and tools for efficient mitigation and restoration. The book provides best-practice examples of sustainable river management from on-site studies, European-wide analyses and case studies from other parts of the world. This book will be of interest to researchers in the field of aquatic ecology, river system functioning, conservation and restoration, to postgraduate students, to institutions involved in water management, and to water related industries.
Download or read book Bioindicators Biomonitors written by Bernd A. Markert and published by Elsevier. This book was released on 2003-06-30 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of contents
Download or read book Tropical Asian Streams written by David Dudgeon and published by Hong Kong University Press. This book was released on 1999-01-01 with total page 843 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the ecology of rivers and streams in the Oriental Region, and describes the composition of their unique fauna - especially the diverse array of animals which live on and among the bottom sediments. Dichotomous keys are provided as an aid to the identification of these animals, and the book is illustrated by over 100 pages of line drawings and maps. Special emphasis is given to the impact of human activities on streams and rivers, and the book concludes with a discussion of conservation and management options for these endangered habitats.
Download or read book Freshwater Biomonitoring and Benthic Macroinvertebrates written by David M. Rosenberg and published by Springer. This book was released on 1993 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: North American and European governments have adopted national programs for environmental monitoring and assessment that include the use of aquatic biota. These programs will use a variety of indicators of environmental health; benthic macroinvertebrates are one of the most promising of them. The chapters in this book deal with the many different approaches available for using benthic macroinvertebrates in biological monitoring programs.
Download or read book Biological Indicators of Freshwater Pollution and Environmental Management written by J.M. Hellawell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: The preface of a book often provides a convenient place in which the author can tender his apologies for any inadequacies and affords him the facility to excuse himself by reminding the reader that his art is long but life, or at least the portion of it in which he has the opportunity for writing books, is short. I, too, am deeply conscious that I have undertaken a task which I could not hope to complete to my own satisfaction but I offer, in self defence, the observation that, inadequate though it is, there is no other book extant, so far as I am aware, which provides the information contained herein within the covers of a single volume. Often during the last decade, in discharging my responsibilities for the environmental aspects of the water authority's operations and works, I should have been deeply grateful to have had access to a compendium such as this. The lack of a convenient source of data made me aware of the need which I have attempted to fill and in doing so I have drawn on my experiences of the kinds of problem which are presented to biologists in the water industry. The maxim 'half a loaf is better than none' seems particularly apt in this context.
Download or read book Volunteer Stream Monitoring written by and published by DIANE Publishing. This book was released on 1997 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biology of Streams and Rivers written by Paul S. Giller and published by Oxford University Press. This book was released on 1998-11-26 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to provide an accessible, up-to-date introduction to stream and river biology. Beginning with the physical features that define running water habitats, the book goes on to look at these organisms and their ecology.
Download or read book Macroinvertebrates and Fishes as Bioindicators of Stream Water Pollution written by Pablo Fierro and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater ecosystems worldwide have been progressively deteriorated during the past decades due to an increasing human pressure that has lead to a decrease in aquatic biodiversity. Among the human activities of high impact on freshwater ecosystems is the land-use change, principally from native forests to agriculture. To evaluate the impacts of human activities on water quality, a traditional approach has considered the use of single physical-chemical parameters. However, this approach may be insufficient to fully assess the impact of these human activities on freshwaters. Therefore, there is a need for alternative tools such as the indices of biotic integrity that may provide a complement to traditional approaches. In the literature, there are several examples of biotic indicators that have shown promising results in evaluating water quality including the use of macroinvertebrates and fish diets. Here, we provide a review of the indicators of biotic integrity that included fish assemblages as well as macroinvertebrates as bioindicators. We identify pros and cons of using aquatic communities as indicators of water quality. Finally, we develop a procedure that combines fish and macroinvertebrate assemblages as bioindicators and discuss their effectiveness using illustrative examples from streams under several agricultural uses in the Mediterranean region of Chile.
Download or read book Indicators of Environmental Quality written by William A. Thomas and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researchers and agencies collect reams of objective data and authors publish volumes of subjective prose in attempts to explain what is meant by environmental quality. Still, we have no universally recognized methods for combining our quantitative measures with our qualitative concepts of environ ment. Not all of our environmental goals should be reduced to mere numbers, but many of them can be; and without these quantitative terms, we have no way of defining our present position nor of selecting positions we wish to attain on any logically established scale of environmen tal values. Stated simply, in our zeal to measure our environment we often forget that masses of numbers describing a system are insufficient to understand it or to be used in selecting goals and priorities for expending our economic and human resources. Attempts at quantitatively describing environmental quality, rather than merely measuring different environmental variables, are relatively recent. This condensing of data into the optimum number of terms with maximum information content is a truly interdisciplinary challenge. When Oak Ridge National Laboratory initiated its Environmental Program in early 1970 under a grant from the National Science Foundation, the usefulness of environmental indicators in assessing the effects of technology was included as one of the initial areas for investigation. James L. Liverman, through his encouragement and firm belief that these indicators are indispensable if we are to resolve our complex environmental problems, deserves much of the credit for the publication of this book.
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:
Download or read book Water Quality Monitoring written by Jamie Bartram and published by CRC Press. This book was released on 2020-10-14 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water quality monitoring is an essential tool in the management of water resources and this book comprehensively covers the entire monitoring operation. This important text is the outcome of a collborative programme of activity between UNEP and WHO with inputs from WMO and UNESCO and draws on the international standards of the International Organization of Standardization.
