Download or read book Spatial and Temporal Dynamics of In stream Temperature in the Beaverkill Watershed written by Beth Gardner and published by . This book was released on 2002 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Temperature Modeling in Streams to Support Ecological Restoration written by Nathaniel L Butler and published by . This book was released on 2015 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water temperature is a critical water quality parameter that affects salmonid survival by influencing its metabolism and growth at all life stages. Stream temperature is an especially important parameter in California rivers where it frequently limits the range of salmonids. Anthropogenic activities have increased stream temperature and degraded spawning, holding, and rearing habitats, and this has contributed to declines in salmonid populations in California. Fisheries managers have a range of analytical and empirical tools available to assess and quantify elevated stream temperature conditions, but many of these tools do not focus on water temperature conditions at the spatial and temporal scales important to salmonids. My research focuses on assessing water temperature at the watershed and upwelling hyporheic scale which are critical to salmonid survival as stream temperature approaches thermal tolerances. I developed a model to calculate water temperature at locations throughout a watershed to provide a method to evaluate the availability and connectivity of suitable thermal habitat throughout a stream network. The model used a linear weighted average of the maximum and minimum air temperatures of the current and 4 prior days. The weighting parameter is dependent upon upstream drainage area enabling the application of the model to both small tributaries and large mainstem streams. I used historical data from the Sonoma Creek, Napa River, and Russian River watersheds to develop, test, calibrate, and partially validate the model. Model results from Sonoma Creek and Napa River indicated it was generally able to estimate daily average water temperature within 1.5 degrees C of the observed water temperature. Data from the Russian River highlighted the model was limited to streams without significant hydrologic modifications or geologic constraints that forced groundwater to the surface. A 1-D advection dispersion heat transport model was developed to quantify the upwelling hyporheic temperature that provides cold water thermal refugia along a streambed for salmonids. I analyzed hyporheic temperature measured at five sites in a previous research program across sixteen kilometers of Deer Creek near Vina, California, to test, calibrate, and partially validate the model. At three sites, I found the 1-D advection and dispersion were the dominant heat transport mechanisms with model root mean square error less than 0.6 degrees C. At two sites, the model was not applicable because modeling results indicated that surface flow rate variations, solar radiation, and multi-day flow paths also influenced the upwelling hyporheic temperature. Modeling was valuable for highlighting the contribution of these additional processes from that of 1-D advection dispersion. The availability of monitoring data over the summer-fall period was essential for modeling upwelling temperature dynamics along a semi-natural channel.
Download or read book Stream Temperature Dynamics and Impacts on the Distribution of Salmonid Fishes in the Garcia River Watershed Mendocino County California written by Katherine Vance and published by . This book was released on 2004 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Spatiotemporal Exploration of Stream Temperature Surge Occurrence Magnitude and Duration in the United States Between 2008 2018 written by Meghan K. Engh and published by . This book was released on 2020 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stormwater discharge, especially when combined with the thermal influence of urbanization, can cause sudden increases in stream temperature that result in negative impacts on stream ecosystem structure. A spatial and temporal understanding of these surges in stream temperature is critical for managing the ecology and uses of these streams. This study assessed the occurrence, magnitude, and duration of stream temperature surges, defined as a rise in stream temperature of more than 2 °C in 30 minutes or less, for 192 United States Geological Survey sites across the contiguous United States. Using stream temperature observations for 2008-2018 at high temporal resolution (every 15 minutes), 106 out of the 192 sites experienced at least one stream temperature surge between 2008 through 2018. There were a total of 2303 surges during the study period at these 106 sites. Stream temperature surges occurred most often during the summer, 5.49 surges/summer/site, had the largest magnitudes on average during the fall, 3.95 °C, and were the longest on average during the winter, 0.70 hours. Stream temperature surge occurrence, magnitude, and duration were most common in the central United States and generally less common in coastal regions (with the exception of Florida). Stream temperature occurrence, magnitude, and duration negatively correlated with the amount of forest land cover and positively correlated with the amount of urban land cover. On days with surges, median air temperature was 0.73°C warmer than average but the day before a surge was 0.23°C colder than average. At the time of a stream temperature surge, streamflow tended to be lower than the monthly average but was nearly the same average the day before. This research highlights the need for careful monitoring of stream temperature at more locations nationwide as well as the implementation of practices to mitigate stream temperature surges in urbanizing watersheds. This likely is most important during summer when stream temperature may be close to the upper thermal limits for aquatic organisms.
Download or read book Watershed Management for Potable Water Supply written by National Research Council and published by National Academies Press. This book was released on 2000-02-17 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1997, New York City adopted a mammoth watershed agreement to protect its drinking water and avoid filtration of its large upstate surface water supply. Shortly thereafter, the NRC began an analysis of the agreement's scientific validity. The resulting book finds New York City's watershed agreement to be a good template for proactive watershed management that, if properly implemented, will maintain high water quality. However, it cautions that the agreement is not a guarantee of permanent filtration avoidance because of changing regulations, uncertainties regarding pollution sources, advances in treatment technologies, and natural variations in watershed conditions. The book recommends that New York City place its highest priority on pathogenic microorganisms in the watershed and direct its resources toward improving methods for detecting pathogens, understanding pathogen transport and fate, and demonstrating that best management practices will remove pathogens. Other recommendations, which are broadly applicable to surface water supplies across the country, target buffer zones, stormwater management, water quality monitoring, and effluent trading.
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 Thirty Eight written by Stephen Long and published by Yale University Press. This book was released on 2016-03-22 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hurricane that pummeled the northeastern United States on September 21, 1938, was New England’s most damaging weather event ever. To call it “New England’s Katrina” might be to understate its power. Without warning, the storm plowed into Long Island and New England, killing hundreds of people and destroying roads, bridges, dams, and buildings that stood in its path. Not yet spent, the hurricane then raced inland, maintaining high winds into Vermont and New Hampshire and uprooting millions of acres of forest. This book is the first to investigate how the hurricane of ’38 transformed New England, bringing about social and ecological changes that can still be observed these many decades later. The hurricane’s impact was erratic—some swaths of forest were destroyed while others nearby remained unscathed; some stricken forests retain their prehurricane character, others have been transformed. Stephen Long explores these contradictions, drawing on survivors’ vivid memories of the storm and its aftermath and on his own familiarity with New England’s forests, where he discovers clues to the storm’s legacies even now. Thirty-Eight is a gripping story of a singularly destructive hurricane. It also provides important and insightful information on how best to prepare for the inevitable next great storm.
Download or read book Old Growth in the East written by Mary D. Davis and published by . This book was released on 1993 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Climate Variability written by Hans v. Storch and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: EUROPEAN SCHOOl OF CLiMATOlOGY AND NATURAL HAZARDS The training of scientific and technical personnel and the development of highly qualified scientists are, and have always been, among the important concerns of the European Commission. Advanced training is an important requirement for the implementation of a common EU policy in science and technology. The European School of Climatology and Natural Hazards was started as apart of the training and education activities of the European Programme on Climatology and Natural Hazards (EPOCH), and is continued under the subsequent research programme (ENVIRONMENT 1990-1994). The school consists of annual courses on specialised subjects within re search in climatology and natural hazards, and is open to graduating, grad uate and post graduate students in these fields. Each of the courses is organized in cooperation with a European Institu tion involved in the current research programme, and is aimed at giving to the students formal lectures and participation in informal discussions with leading researchers. The present volume is based on the lectures given at the course held on the island of Elba from the 30th October to the 6th of November 1993 on Statistical Analysis of Climate Variability. It features selected and extended presentations, and represents an important contribution to advanced studies in climate statistical analysis, supplementing more traditional texts. I trust that all those involved in research related to climate change and climate variability will appreciate this work and will benefit from the com prehensive and state-of-the-art information it provides.
Download or read book Freshwater Algae of North America written by John D. Wehr and published by Elsevier. This book was released on 2015-06-05 with total page 1067 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater Algae of North America: Ecology and Classification, Second Edition is an authoritative and practical treatise on the classification, biodiversity, and ecology of all known genera of freshwater algae from North America. The book provides essential taxonomic and ecological information about one of the most diverse and ubiquitous groups of organisms on earth. This single volume brings together experts on all the groups of algae that occur in fresh waters (also soils, snow, and extreme inland environments). In the decade since the first edition, there has been an explosion of new information on the classification, ecology, and biogeography of many groups of algae, with the use of molecular techniques and renewed interest in biological diversity. Accordingly, this new edition covers updated classification information of most algal groups and the reassignment of many genera and species, as well as new research on harmful algal blooms. Extensive and complete Describes every genus of freshwater algae known from North America, with an analytical dichotomous key, descriptions of diagnostic features, and at least one image of every genus. Full-color images throughout provide superb visual examples of freshwater algae Updated Environmental Issues and Classifications, including new information on harmful algal blooms (HAB) Fully revised introductory chapters, including new topics on biodiversity, and taste and odor problems Updated to reflect the rapid advances in algal classification and taxonomy due to the widespread use of DNA technologies
Download or read book Urban Ecosystem Justice written by Scott T. Kellogg and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Merging together the fields of urban ecology, environmental justice, and urban environmental education, Urban Ecosystem Justice promotes building fair, accessible, and mutually beneficial relationships between citizens and the soils, water, atmospheres, and biodiversity in their cities. This book provides a framework for re-centering issues of justice and fairness in sustainability discourse while challenging the profound ecological alienation experienced by urban residents. While the urban sustainability movement has had many successes in the past few decades, there remain areas for it to grow. For one, the benefits of sustainability have disproportionately benefited wealthier city residents, with concerns over equity, justice and social sustainability frequently taking a back seat to economic and environmental considerations. Additionally, many city dwellers remain estranged from and unfamiliar with ecological processes, with urban environments often thought of as existing outside of nature or as hopelessly degraded. Through a citizen-centered lens, the book offers a guide to reconciling these issues by demonstrating how questions of equity, access, and justice apply to the biophysical dimensions of the urban ecosystem: soil, water, air, waste, and biodiversity. Drawing heavily from the fields of urban ecology, environmental justice, and ecological design, this book lays out a science of cities for people: a pedagogical platform that can be used to promote ecological literacy in underrepresented urban communities through affordable and decentralized means. This book provides both a theoretical and practical field guide to students and researchers of urban sustainability, city planners, architects, policymakers and activists wishing to develop reciprocal relationships with urban ecologies"--
Download or read book Acidic Deposition and Aquatic Ecosystems written by Donald F. Charles and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acidic deposition and its effect on aquatic ecosystems have become major scientific and public policy issues in the United States since the early 1970s, and many diverse studies have been completed. This book is the first comprehensive, integrated synthesis of available information on current and potential effects of acidic precipitation on lakes and streams in geographic regions with a high number of low-alkalinity surface water from the Adirondacks and the Southern Blue Ridge to the Upper Midwest to the Rocky Mountains, the Sierra Nevada, and the Cascades. Written by leading authors, the book examines the current status of water chemistry and characterizes the processes controlling water chemistry on a regional basis by using and comparing high-quality data sets. Methods for the assessment of long-term changes in water chemistry and their effects in fish and other biota are also presented. The book amply illustrates the substantial diversity among geographical regions with respect to the nature of surface waters and the complexity of their response to acidic deposition. This volume will be of great interest to researchers in limnology, aquatic ecology, environmental chemistry, hydrology, and atmospheric sciences. It will also serve as an important reference for environmental managers and policy makers.
Download or read book Qualitative Research for the Information Professional written by G. E. Gorman and published by Facet Publishing. This book was released on 2005 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This established text is the only introduction to qualitative research methodologies in the field of library and information management. Its extensive coverage encompasses all aspects of qualitative research work from conception to completion, and all types of study in a variety of settings from multi-site projects to data organization. The book features many case studies and examples, and offers a comprehensive manual of practice designed for LIS professionals. This new edition has been thoroughly revised and includes three new chapters. It has been updated to take account of the substantial growth in the amount and quality of web-based information relevant to qualitative research methods and practice, and the many developments in software applications and resources. The authors have identified a clear need for a new chapter on the evaluation of existing research, as a gateway into new research for information professionals. The final chapter, 'Human Resources In Knowledge Management', takes the form of a model case study, and is an 'ideal' qualitative investigation in an information setting. It exemplifies many of the approaches to qualitative research discussed in earlier chapters. Readership: Directed primarily at the beginner researcher, this book also offers a practical refresher in this important area for the more experienced researcher. It is a useful tool for all practitioners and researchers in information organizations, whether libraries, archives, knowledge management centres, record management centres, or any other type of information service provider.
Download or read book Zebra Mussels Biology Impacts and Control written by Thomas F. Nalepa and published by CRC Press. This book was released on 1992-11-24 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction and rapid spread of the zebra mussel in North American waters has caused great concern among industrial and recreational users of these waters. This bivalve mollusk is a biofouler that attaches to any firm substrate (e.g. rocks, piers, water intake pipes, boat hulls) and has already created significant problems for raw water users such as water treatment plants and power plants. Zebra Mussels: Biology, Impacts and Control provides essential information regarding the biology of the zebra mussel in North America and Europe, presents case studies of environmental and industrial impacts, and outlines control strategies. Summary articles detail its life history, origins, and morphology. The book also examines techniques used to culture and maintain this organism in the laboratory. Thirty-two color plates illustrate some of the dramatic problems created by the explosive population growth of this species. Zebra Mussels: Biology, Impacts, and Control is an important resource for ecologists, conservationists, environmental consultants, water quality engineers, regulatory officials, power utilities, and libraries.
Download or read book The Archaeology of Ancient North America written by Timothy R. Pauketat and published by Cambridge University Press. This book was released on 2020-02-27 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike extant texts, this textbook treats pre-Columbian Native Americans as history makers who yet matter in our contemporary world.
Download or read book Watershed Assessment of River Stability and Sediment Supply WARSSS written by David L. Rosgen and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Stability written by David L. Rosgen and published by . This book was released on 2008-01-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
