Download or read book Development and Application of a Process based Basin scale Stream Temperature Model written by Douglas McKinnon Allen and published by . This book was released on 2008 with total page 410 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 2017-01-16 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods in Stream Ecology provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This two part new edition is updated to reflect recent advances in the technology associated with ecological assessment of streams, including remote sensing. Volume focusses on ecosystem structure with in-depth sections on Physical Processes, Material Storage and Transport and Stream Biota. With a student-friendly price, this Third Edition 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. Methods in Stream Ecology, 3rd Edition, Volume 2: Ecosystem Structure, is also available now! - Provides a variety of exercises in each chapter - Includes detailed instructions, illustrations, formulae, and data sheets for in-field research for students - Presents taxonomic keys to common stream invertebrates and algae - Includes website with tables and a link from Chapter 22: FISH COMMUNITY COMPOSITION to an interactive program for assessing and modeling fish numbers - Written by leading experts in stream ecology
Download or read book Thermal Adaptation written by Michael J. Angilletta Jr. and published by Oxford University Press. This book was released on 2009-01-29 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Temperature profoundly impacts both the phenotypes and distributions of organisms. These thermal effects exert strong selective pressures on behaviour, physiology and life history when environmental temperatures vary over space and time. Despite temperature's significance, progress toward a quantitative theory of thermal adaptation has lagged behind empirical descriptions of patterns and processes. In this book, the author draws on theory from the more general discipline of evolutionary ecology to establish a framework for interpreting empirical studies of thermal biology. This novel synthesis of theoretical and empirical work generates new insights about the process of thermal adaptation and points the way towards a more general theory. The threat of rapid climatic change on a global scale provides a stark reminder of the challenges that remain for thermal biologists and adds a sense of urgency to this book's mission. Thermal Adaptation will benefit anyone who seeks to understand the relationship between environmental variation and phenotypic evolution. The book focuses on quantitative evolutionary models at the individual, population and community levels, and successfully integrates this theory with modern empirical approaches. By providing a synthetic overview of evolutionary thermal biology, this accessible text will appeal to both graduate students and established researchers in the fields of comparative, ecological, and evolutionary physiology. It will also interest the broader audience of professional ecologists and evolutionary biologists who require a comprehensive review of this topic, as well as those researchers working on the applied problems of regional and global climate change.
Download or read book Stream Temperature Modeling for Marys River Watershed written by Mamoon Mustafa and published by . This book was released on 2016 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: High water temperatures in rivers have detrimental effects on riverine water quality and ecology. In this study, two river temperature models, within the agricultural watershed model Soil and Water Assessment Tool (SWAT), were investigated for their ability to simulate water temperatures accurately throughout the year. The original temperature model within SWAT uses a linear approach to estimate stream temperature based on air temperature and does not account for hydrological components for calculating stream temperature. Recently, a new stream temperature model for SWAT was developed that combines meteorological with hydrological components such as lateral flow, snowmelt, groundwater flow and surface runoff. The model also uses three elements for the stream temperature calculations – specifically, within a sub-basin (temperature and flow rate), upstream of sub-basin (temperature and incoming flow), and air-water temperature heat exchange transfer. The goal of this research was to improve the recently developed temperature model further by incorporating different types of heat exchange sources, in addition to air-water heat transfer. The edited model was tested for Marys River, a west tributary of the Willamette River in Oregon. The output from the edited model was then compared with observed stream temperatures, for different spatial locations within the watershed to assess the model efficiency. The results showed a good agreement for forested region compared to Ficklin’s default model with RMSE of both models matching. However, there were over predictions and more noise in predicting stream temperature for agricultural region within the watershed in which resulted in higher RMSE for edited model.
Download or read book Towards a High Resolution Global Stream Temperature Model written by Joseph Ariwi and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Water temperature is a key component in freshwater aquatic environments, acting as a driver of habitat processes and a trigger of life cycle events for riverine invertebrate and vertebrate species. Habitat suitability for fish species can be defined by maximum and minimum temperature tolerances and both habitat-forming processes and migratory behaviors are a function of localized thermal regimes. The salience of thermal regimes on river ecology is of particular importance given the increased alteration of riverscapes through the construction of impoundments, as well as the abstraction and deposition of large volumes of water in industrial and agricultural practices that alter thermal regimes. Thermal regimes have also been shown to be impacted by global climate change. River temperature data is available at a high resolution through the use of remote sensing along individual river reaches or from onsite measurements at river gauging stations. There is, however, a lack of high resolution river temperature data at the global scale of a consistent quality that captures the full spatiotemporal temperature variation in every river reach. Using two main estimation approaches - a local technique and a physically based river network mixing technique - four temperature estimation models are developed. The four models were developed using global data for global application, but were only applied within the contiguous United States of America. The results present the spatiotemporal patterns of simulated long-term mean monthly river temperatures. The estimates are evaluated using observed data across the contiguous United States of America and the effectiveness of the estimation methods are compared and contrasted. Within the scope of this study, a logistic function with optimized model parameters was found to be the best performing stream temperature estimation model, producing strong validation statistics across different terrestrial biomes. However, the performance of this technique was found to be poor in rivers impacted by anthropogenic flow regulation, glacier or snow melt, and other perturbations. The data produced will be of value in ecological assessments and provides a baseline for global stream temperature data at a high spatial resolution." --
Download or read book Instream Water Temperature Model written by Fred D. Theurer and published by . This book was released on 1985 with total page 352 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 The Seine River Basin written by Nicolas Flipo and published by Springer Nature. This book was released on 2021-01-30 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book reviews the water-agro-food and socio-eco-system of the Seine River basin (76,000 km2), and offers a historical perspective on the river’s long-term contamination. The Seine basin is inhabited by circa 17 million people and is impacted by intensive agricultural practices and industrial activities. These pressures have gradually affected its hydrological, chemical and ecological functioning, leading to a maximum chemical degradation between the 1960s and the 1990s. Over the last three decades, while major water-quality improvements have been observed, new issues (e.g. endocrine disruptors, microplastics) have also emerged. The state of the Seine River network, from the headwaters to estuary, is increasingly controlled by the balance between pressures and social responses. This socio-ecosystem provides a unique example of the functioning of a territory under heavy anthropogenic pressure during the Anthropocene era. The achievements made were possible due to the long-term PIREN Seine research program, established in 1989 and today part of the French socio-ecological research network “Zones Ateliers”, itself part of the international Long-term Socio-economic and Ecological Research Network (LTSER). Written by experts in the field, the book provides an introduction to the water budget and the territorial metabolism of the Seine basin, and studies the trajectories and impact of various pollutants in the Seine River. It offers insights into the ecological functioning, the integration of agricultural practices, the analysis of aquatic organic matter, and the evolution of fish assemblages in the Seine basin, and also presents research perspectives and approaches to improve the water quality of the Seine River. Given its scope, it will appeal to environmental managers, scientists and policymakers interested in the long-term contamination of the Seine River.
Download or read book Statistical Methods in Water Resources written by D.R. Helsel and published by Elsevier. This book was released on 1993-03-03 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data on water quality and other environmental issues are being collected at an ever-increasing rate. In the past, however, the techniques used by scientists to interpret this data have not progressed as quickly. This is a book of modern statistical methods for analysis of practical problems in water quality and water resources.The last fifteen years have seen major advances in the fields of exploratory data analysis (EDA) and robust statistical methods. The 'real-life' characteristics of environmental data tend to drive analysis towards the use of these methods. These advances are presented in a practical and relevant format. Alternate methods are compared, highlighting the strengths and weaknesses of each as applied to environmental data. Techniques for trend analysis and dealing with water below the detection limit are topics covered, which are of great interest to consultants in water-quality and hydrology, scientists in state, provincial and federal water resources, and geological survey agencies.The practising water resources scientist will find the worked examples using actual field data from case studies of environmental problems, of real value. Exercises at the end of each chapter enable the mechanics of the methodological process to be fully understood, with data sets included on diskette for easy use. The result is a book that is both up-to-date and immediately relevant to ongoing work in the environmental and water sciences.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HEC 5Q written by R. G. Willey and published by . This book was released on 1986 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Soil Science written by Rattan Lal and published by CRC Press. This book was released on 2017-01-11 with total page 2795 pages. Available in PDF, EPUB and Kindle. Book excerpt: New and Improved Global Edition: Three-Volume Set A ready reference addressing a multitude of soil and soil management concerns, the highly anticipated and widely expanded third edition of Encyclopedia of Soil Science now spans three volumes and covers ground on a global scale. A definitive guide designed for both coursework and self-study, this latest version describes every branch of soil science and delves into trans-disciplinary issues that focus on inter-connectivity or the nexus approach. For Soil Scientists, Crop Scientists, Plant Scientists and More A host of contributors from around the world weigh in on underlying themes relevant to natural and agricultural ecosystems. Factoring in a rapidly changing climate and a vastly growing population, they sound off on topics that include soil degradation, climate change, soil carbon sequestration, food and nutritional security, hidden hunger, water quality, non-point source pollution, micronutrients, and elemental transformations. New in the Third Edition: Contains over 600 entries Offers global geographical and thematic coverage Entries peer reviewed by subject experts Addresses current issues of global significance Encyclopedia of Soil Science, Third Edition: Three Volume Set expertly explains the science of soil and describes the material in terms that are easily accessible to researchers, students, academicians, policy makers, and laymen alike. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]
Download or read book Application of the China Meteorological Assimilation Driving Datasets for the SWAT Model CMADS in East Asia written by Hao Wang and published by MDPI. This book was released on 2019-07-23 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: To promote scientific understanding of surface processes in East Asia, we have published details of the CMADS dataset in the journal, Water, and expect that users around the world will learn about CMADS datasets while promoting the development of hydrometeorological disciplines in East Asia. We hope and firmly believe that scientific development in East Asia and our understanding of this typical region will be further advanced.
Download or read book Heat Source written by Matthew S. Boyd and published by . This book was released on 1996 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reach defined analysis concentrated on the water temperature change that occurred in a stream/river segment over the course of one full diurnal cycle. Digital thermistors, data loggers and computer model development were utilized in reach analysis to link parameters of the stream system to a specific temperature change. The methodology employed was relatively simple and fast, and many successive stream segments were analyzed simultaneously. Reach analysis of stream temperature change identified the existing components of the stream system that caused increased water temperature and predicted the effectiveness of managed improvements to the stream system. Stream and river temperature regulation has focused on system and basin wide management. Often, the source of increased water temperature originates in only a part of the stream system. Reach defined analysis identified the portions of the stream system in which most water temperature change occurred, offered an explanation for the temperature response and provided specific information about the alternate strategies that may ameliorate undesired water temperatures. The development of the computer model Heat Source included physically based mathematical descriptions of stream energy and hydrologic processes. An implicit finite difference numerical method was implemented for simultaneous solution. The methodology presented in Heat Source is portable and applicable to all streams, rivers and open channels.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 1344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Colorado River Basin Water Management written by National Research Council and published by National Academies Press. This book was released on 2007-06-30 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies of past climate and streamflow conditions have broadened understanding of long-term water availability in the Colorado River, revealing many periods when streamflow was lower than at any time in the past 100 years of recorded flows. That information, along with two important trends-a rapid increase in urban populations in the West and significant climate warming in the region-will require that water managers prepare for possible reductions in water supplies that cannot be fully averted through traditional means. Colorado River Basin Water Management assesses existing scientific information, including temperature and streamflow records, tree-ring based reconstructions, and climate model projections, and how it relates to Colorado River water supplies and demands, water management, and drought preparedness. The book concludes that successful adjustments to new conditions will entail strong and sustained cooperation among the seven Colorado River basin states and recommends conducting a comprehensive basinwide study of urban water practices that can be used to help improve planning for future droughts and water shortages.
Download or read book Food Energy Water Systems Achieving Climate Resilience and Sustainable Development in the 21st Century written by Charles Vörösmarty and published by Frontiers Media SA. This book was released on 2024-01-23 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: extreme weather will mean ongoing challenges to the capacity of these sectors to support human well-being, grow the economy, and provide critical environmental services. Society has yet to evaluate the resilience of FEWS to climate, environmental, and management stresses as it shapes strategies to support sustainable development over the next decades. These issues constitute a quintessential interdisciplinary research challenge and require a well-structured science agenda and supportive information services for implementing key findings that governments and stakeholders can adopt. Integrated policy pathways require usable research findings, applications, models, real-time information systems, and decision support systems. In addition, stakeholder engagement is essential to communicate the benefits and results of these approaches and to engage appropriate groups in their implementation.
