Download or read book An Integrated Approach to Gauge the Effects of Global Climate Change on Headwater Stream Ecosystems written by Gwendolynn Wolfheim Bury and published by . This book was released on 2015 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change is predicted to affect ecosystems, including systems already stressed by human impacts. One ecosystem that is already highly impacted by human land use is the cold headwater stream system of the Pacific Northwest. One method of assessing the function of an ecosystem is by using an indicator species. Rhyacotriton variegatus is one such indicator species, sensitive to disturbance, and especially to temperature elevation. This study combines field measurements from the warmest edge of the range of R. variegatus, laboratory determination of thermal tolerance, and modeling. These diverse experimental sources combine to clarify the potential risks of climate change on R. variegatus, and the headwater streams they occupy. Abiotic factors are important determinates of the range of species. Predicted range shifts under climate change are based on the assumption that temperature increases will make habitat at the edge of the known range unsuitable in the future. In order to accurately predict such changes, a quantification of the current thermal boundary is needed. In Chapter Two, I placed temperature loggers and measured other environmental variables in 28 streams: 8 in the cool core of the range of R. variegatus, 10 as far east and south as R. variegatus has ever been found, and 10 outside the known range of R. variegatus. The variables which best defined the range edge were degree days (number of days over specific temperatures), and the slope of the stream bed. Specific physiological tolerance information is also essential for accurate modeling of species habitats. Physiological limits should be determined experimentally using procedures that mimic natural conditions as closely as possible, so that the results will be applicable to natural systems. Forecasting the effects of human activities on populations also requires an understanding of how specific abiotic changes will impact different life stages. I used a realistic cycling temperature treatment in Capters Three and Four, based on the data collected in Chapter One. I tested the survival of larval R. variegatus at a chronic exposure (21 days), and the level of stress as measured by corticosterone in adult R. variegatus. Larval R. variegatus survived up to a daily maximum of 23° C, beyond this the larvae died (LT 50 value of 24° C). I found that daily maximum temperatures over 18° C caused a doubling of corticosterone. There are many ways of modeling future climate change and the effect of this change on species' distribution. I chose to use large array of potential climate futures, modeling methods, and time periods to forecast the change in R. variegatus' range. This allowed me to compare the variation between the predictions for climate change, and find averages across the models. I used two correlative models, and one mechanistic model. The mechanistic model incorporated the relationship between air and water temperature from Chapter Two, and the physiological limits from Chapters Three and Four. All models predicted decreases in areas of the map classified as excellent habitat for R. variegatus. As expected, the reduction in range was most severe at longer time periods into the future, with higher CO2 amounts in the atmosphere, and in models that incorporated more abiotic variables. R. variegatus are sensitive indicators for headwater stream ecosystem function, and will have a reduced range under climate change.
Download or read book Climate Change Impacts on Freshwater Ecosystems written by Martin Kernan and published by John Wiley & Sons. This book was released on 2011-02-14 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text examines the impact of climate change on freshwater ecosystems, past, present and future. It especially considers the interactions between climate change and other drivers of change including hydromorphological modification, nutrient loading, acid deposition and contamination by toxic substances using evidence from palaeolimnology, time-series analysis, space-for-time substitution, laboratory and field experiments and process modelling. The book evaluates these processes in relation to extreme events, seasonal changes in ecosystems, trends over decadal-scale time periods, mitigation strategies and ecosystem recovery. The book is also concerned with how aspects of hydrophysical, hydrochemical and ecological change can be used as early indicators of climate change in aquatic ecosystems and it addresses the implications of future climate change for freshwater ecosystem management at the catchment scale. This is an ideal book for the scientific research community, but is also accessible to Masters and senior undergraduate students.
Download or read book Impact of Climate Change on Water Resources written by Christina Anagnostopoulou and published by MDPI. This book was released on 2021-01-19 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Water resources management should be assessed under climate change conditions, as historic data cannot replicate future climatic conditions. - Climate change impacts on water resources are bound to affect all water uses, i.e., irrigated agriculture, domestic and industrial water supply, hydropower generation, and environmental flow (of streams and rivers) and water level (of lakes). - Bottom-up approaches, i.e., the forcing of hydrologic simulation models with climate change models’ outputs, are the most common engineering practices and considered as climate-resilient water management approaches. - Hydrologic simulations forced by climate change scenarios derived from regional climate models (RCMs) can provide accurate assessments of the future water regime at basin scales. - Irrigated agriculture requires special attention as it is the principal water consumer and alterations of both precipitation and temperature patterns will directly affect agriculture yields and incomes. - Integrated water resources management (IWRM) requires multidisciplinary and interdisciplinary approaches, with climate change to be an emerging cornerstone in the IWRM concept.
Download or read book Climate Change Effects on Groundwater Resources written by Holger Treidel and published by CRC Press. This book was released on 2011-12-02 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change is expected to modify the hydrological cycle and affect freshwater resources. Groundwater is a critical source of fresh drinking water for almost half of the world’s population and it also supplies irrigated agriculture. Groundwater is also important in sustaining streams, lakes, wetlands, and associated ecosystems. But despite this, knowledge about the impact of climate change on groundwater quantity and quality is limited. Direct impacts of climate change on natural processes (groundwater recharge, discharge, storage, saltwater intrusion, biogeochemical reactions, chemical fate and transport) may be exacerbated by human activities (indirect impacts). Increased groundwater abstraction, for example, may be needed in areas with unsustainable or contaminated surface water resources caused by droughts and floods. Climate change effects on groundwater resources are, therefore, closely linked to other global change drivers, including population growth, urbanization and land-use change, coupled with other socio-economic and political trends. Groundwater response to global changes is a complex function that depends on climate change and variability, topography, aquifer characteristics, vegetation dynamics, and human activities. This volume contains case studies from diverse aquifer systems, scientific methods, and climatic settings that have been conducted globally under the framework of the UNESCO-IHP project Groundwater Resources Assessment under the Pressures of Humanity and Climate Change (GRAPHIC). This book presents a current and global synthesis of scientific findings and policy recommendations for scientists, water managers and policy makers towards adaptive management of groundwater sustainability under future climate change and variability.
Download or read book Climate Change and Water written by Carol Howe and published by IWA Publishing. This book was released on 2010 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Professionals are sure to understand the effects of climate change on urban water and wastewater utilities with this collection of international scientific papers. Case studies and practical planning, mitigating, and adapting information are provided on greenhouse gases, energy use, and water supply and quality issues.
Download or read book Impact of Climate Change on Water Resources written by Komaragiri Srinivasa Raju and published by Springer. This book was released on 2017-12-29 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives an overview of various aspects of climate change by integrating global climate models, downscaling approaches, and hydrological models. It also covers themes that help in understanding climate change in a holistic manner. The book includes worked-out examples, revision questions, exercise problems, and case studies, making it relevant for use as a textbook in graduate courses and professional development programs. The book will serve well researchers, students, as well as professionals working in the area of hydroclimatology.
Download or read book Vegetation Water Humans and the Climate written by Pavel Kabat and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state-of-the-art overview of the influence of terrestrial vegetation and soils within the Earth system. The text deals especially with interactions between the terrestrial biosphere and the atmosphere via the hydrological cycle and their interlinkage with anthropogenic activities. Measurements gathered in integrated field experiments in the Sahel, the Amazon, North America and South-east Asia confirm the importance of these interactions. Observations are complemented by modelling studies, including regional models that simulate flows and transport in river catchments, coupled land-cover and regional climate systems, and Earth-system and global circulation models. Water, nutrient and sediment fluxes in river basins are also discussed and are shown to be highly impacted and regulated by humans through land use, pollution and river engineering. Finally, the book discusses environmental vulnerability and methodologies for assessing the risks associated with regional and global climatic and environmental variability and change. The results reported in this book are based on the research work of many individual scientists and teams around the world associated with the objectives of the IGBP-BAHC and WCRP-GEWEX international research programmes.
Download or read book Beyond Downscaling written by Kara N. DiFrancesco, Patrick Ray and published by World Bank Publications. This book was released on 2014 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change adds uncertainty to already complex global water challenges. Because climate change affects poorer countries and vulnerable populations the most, the World Bank strives to mainstream climate change considerations into its operations to inform investment and water resources management decisions. Although no standard method has been adopted yet by the Bank, common practice used downscaled projected precipitation and temperature from Global Climate Models (GCMs), as input to hydrologic models. While this has been useful in some applications, they often give too wide a dispersion of readings to provide useful guidance for site-specific water resources management and infrastructure planning and design. Rather than design for an uncertain situation selected a priori, the so-called “bottom-up” approaches explore the sensitivity of a chosen project to the effects of uncertainties caused by climate change. This book summarizes alternatives explored by a group of organizations (such as the U.S. Corps of Engineers, Conservation International, the University of Massachusetts and the Bank) all belonging to the Alliance for Global Water Adaptation (AGWA), to provide practitioners with the tools to adapt to the realities of climate change by following a decision-making process that incorporates bottom-up thinking.
Download or read book Impact of Climate Change on Water and Health written by Velma I. Grover and published by CRC Press. This book was released on 2012-12-18 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the hydrological cycle is so intricately linked to the climate system, any change in climate impacts the water cycle in terms of change in precipitation patterns, melting of snow and ice, increased evaporation, increased atmospheric water vapor and changes in soil moisture and run off. Consequently, climate change could result in floods in some areas and droughts in others resulting in varying availability and the quality of water affects the quality of life, food security and also health security. This book examines the impact of climate change on water as well as health.
Download or read book Modelling the Impact of Climate Change on Water Resources written by C. Fai Fung and published by John Wiley & Sons. This book was released on 2011-07-05 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: The quantitative assessment of the impact of climate change on water availability and water resources management requires knowledge of climate, hydro(geo)logical and water resources models, and particularly the relationships between each of them. This book brings together world experts on each of these aspects, distilling each complex topic into concise and easy to understand chapters, in which both the uses and limitations of modelling are explored. The book concludes with a set of case studies using real-life examples to illustrate the steps required and the problems that can be faced in assessing the potential impacts of climate change on water resource systems. For students, scientists, engineers and decision-makers alike, this book provides an invaluable and critical look at the information that is provided by climate models, and the ways it is used in modelling water systems. A key focus is the exploration of how uncertainties may accrue at each stage of an impacts assessment, and the reliability of the resulting information. The book is a practical guide to understanding the opportunities and pitfalls in the quantitative assessment of climate change impacts and adaptation in the water resource sector.
Download or read book Climate Change Adaptation in the Water Sector written by Fulco Ludwig and published by Routledge. This book was released on 2012-05-04 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's climate variability already has a large impact on water supply and protection. Millions of people are affected every year by droughts and floods. Future climate change is likely to make things worse. Many people within the water sector are aware that climate change is expected to have serious consequences for water resource management, but they are unsure how to incorporate climate information into their management structures. Providing a compendium of specific strategies, Climate Change Adaptation in the Water Sector is the first book to show students and professionals in the water sector how to adapt to climate change and variability. It enables advanced students, managers, decision-makers and other practitioners to feel comfortable in analysing and using climate data within the water sector. The book consists of two parts: the first describes the general issues and is written mainly by the editors of the book, while the second part contains specific case studies drawn from a wide range of contrasting countries: Australia, Germany, The Netherlands, the Philippines, South Africa, Thailand and Yemen. Published in association with the Co-operative Programme on Water and Climate, NeWater, UNESCO and WATCH (Water and Global Change)
Download or read book Climate Variability Climate Change and Fisheries written by Michael H. Glantz and published by Cambridge University Press. This book was released on 1992-05-07 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: As we approach the end of the twentieth century, public and scientific attention is focusing increasingly on the detection and assessment of changes in our environment. This unique volume addresses the potential implications of global warming for fisheries and the societies which depend on them. Using a 'forecasting by analogy' approach, which draws upon experiences from the recent past in coping with regional fluctuations in the abundance or availability of living marine resources, it is shown how we might be able to assess our ability to respond to the consequences of future environmental changes induced by a potential global warming. The book takes the form of a series of integrated case studies from around the globe, which are presented by an interdisciplinary group of leading researchers. This important and thought-provoking volume will be of interest to a wide range of scientists working in the fields of biology, marine and environmental science, climatology, economics and anthropology, as well as resource managers and policy makers concerned with the health and future of living marine resources.
Download or read book Prediction of Climate Change Effects on Streamflow Regime Important to Stream Ecology written by Sulochan Dhungel and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A major challenge in freshwater ecosystem management is to predict future changes in streamflow regime. This thesis focused on identifying and modeling specific characteristics of streamflow that are important to stream ecosystems. The need to evaluate the potential impacts of climate change on stream ecosystems makes it important to study how streamflow regime may change. In this thesis we sought to advance understanding of the effect of climate change on streamflow regime by (1) examining the spatial variation in streamflow attributes across the continental US, (2) modeling how these streamflow attributes vary with current climate and watershed features, and (3) using this model with future climate projections of changes in precipitation and temperature to predict how streamflow attributes change with climate change. We used long-term daily flow measurements for 601 gauged streams whose watersheds were in relatively unimpaired condition to characterize streamflow regimes. Sixteen streamflow variables were identified which in our judgment sufficiently characterized aspects of the streamflow regime most relevant to stream ecosystem structure and function. These are computed for each stream. Principal component analysis with Varimax rotation reduced the dimensionality to five uncorrelated streamflow factors that quantify lowflow, magnitude, flashiness, timing and constancy. These independent factors were used to hereafter classify the streams based on distances in factor space into three broad classes which were further divided into eight classes. We used Random Forests to develop a model to predict these stream classes using watershed and climate attributes. The model had an accuracy of about 75%. Downscaled climate projections of precipitation and temperature were used to predict the changes in these stream classes by 2100 using the RF model. Thirty-three percent of selected sites were predicted to change into a different stream class by 2100. The least changes were predicted in snow-fed streams in the west while most of changes were predicted for rain-fed small perennial streams and intermittent streams in the central and eastern US. Class changes predicted, due to projected climate change provide a basis for (i) considering the extent of projected changes and (ii) formulating approaches to protect ecosystems that may be subject to change.
Download or read book Aquatic Ecosytems Global Climate Change written by N. LeRoy Poff and published by . This book was released on 2002 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change in Sustainable Water Resources Management written by Omid Bozorg-Haddad and published by Springer Nature. This book was released on 2022-06-29 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive approach to all aspects of water-related subjects affected by climate change that expand readers' attitudes toward future of the management strategies and improve management plans. It summarizes climate change scenarios, models, downscaling methods, and how to select the appropriate method. It also introduces practical steps in assessing climate change impacts on water issues through introducing hydrological models and climate change data applications in hydrologic analysis. The book caters to specialist readers who are interested in analyzing climate change effects on water resources, and related issues can gain a profound understanding of the practical concepts and step-by-step analysis, which is enriched with real case studies all around the world. Moreover, readers will be familiar with potential mitigation and adaptation measures in sustainable water engineering, considering the results of hydrologic modeling.
Download or read book Climate Change Impacts on Water Resources written by Ramakar Jha and published by Springer Nature. This book was released on 2021-03-27 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides insights and a capacity to understand the climate change phenomenon, its impact on water resources, and possible remedial measures. The impact of climate change on water resources is a global issue and cause for concern. Water resources in many countries are extremely stressed, and climate change along with burgeoning populations, the rise in living standards, and increasing demand on resources are factors which serve to exacerbate this stress. The chapters provide information on tools that will be useful to mitigate the adverse consequences of natural disasters. Fundamental to addressing these issues is hydrological modelling which is discussed in this book and ways to combat climate change as an important aspect of water resource management.
Download or read book Climate Change and Water written by Intergovernmental Panel on Climate Change / Working Group Technical Support Unit and published by . This book was released on 2008 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Technical Paper addresses the issue of freshwater. Sealevel rise is dealt with only insofar as it can lead to impacts on freshwater in coastal areas and beyond. Climate, freshwater, biophysical and socio-economic systems are interconnected in complex ways. Hence, a change in any one of these can induce a change in any other. Freshwater-related issues are critical in determining key regional and sectoral vulnerabilities. Therefore, the relationship between climate change and freshwater resources is of primary concern to human society and also has implications for all living species. -- page vii.
