Detecting and predicting the responses of lakes to global climate change PDF Download

Author: U. Gaedke
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Glen George
Publisher: Springer Science & Business Media
ISBN: 9048129451
Category : Science
Languages : en
Pages : 517

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In this book, scientists from eleven countries summarize the results of an EU project (CLIME) that explored the effects of observed and projected changes in the climate on the dynamics of lakes in Northern, Western and Central Europe. Historical measurements from eighteen sites were used to compare the seasonal dynamics of the lakes and to assess their sensitivity to local, regional and global-scale changes in the weather. Simulations using a common set of water quality models, perturbed by six climate-change scenarios, were then used to assess the uncertainties associated with the projected changes in the climate. The book includes chapters on the phenology and modelling of lake ice, the supply and recycling of nitrogen and phosphorus, the flux of dissolved organic carbon and the growth and the seasonal succession of phytoplankton. There are also chapters on the coherent responses of lakes to changes in the circulation of the atmosphere, the development of a web-based Decision Support System and the implications of climate change for the Water Framework Directive.

Author: Benjamin Michael Kraemer
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Myriad patterns and processes at virtually all levels of chemistry, geology, and biology have been observed to depend on temperature. Temperature dependence in nature can often be traced back to the chemical kinetics that underlie all chemical and biochemical reactions. The ubiquity of temperature dependence is central to concerns about the impact of climate change on the Earth. Understanding and predicting responses to climate change requires knowledge of how global patterns of warming rates intersect with the temperature sensitivity of ecosystem processes to elicit ecosystem responses. Here we use long-term temperature data from lakes around the world to assess global patterns in lake warming rates and the sensitivity of lake ecosystems to warming. We find that for many responses to warming, tropical lake ecosystems may be more sensitive than lakes at higher latitudes. Even though tropical lakes tend to have slower surface warming rates, their heightened sensitivity to temperature can cause greater absolute responses to climate warming. We use field data from Lake Tanganyika, the deepest and oldest lake in Africa, to show how the inherent high sensitivity of tropical lakes to warming can lead to complex responses to temperature. In sum, this dissertation highlights the usefulness of chemical kinetics for understanding and predicting global lake ecosystem responses to climate change.

Author: David C. L. Lam
Publisher: ASCE Publications
ISBN: 9780784474686
Category : Technology & Engineering
Languages : en
Pages : 236

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This report provides a state-of-the-art review of the climate change effects on lake hydrodynamics and water quality. Most of the engineering cases in this book deal with the ability of existing infrastructure to cope with extreme weather conditions. The case studies are intended to illustrate the advancement in modeling research on lake hydrodynamics, thermal stratification, pollutant transport, and water quality by highlighting the climate change aspects in the application of these techniques. Topics include climate and lake responses, lake thermodynamics, large-scale circulation, wind-waves on large lakes, great lakes ice cover, and water quality.

Author: Herbert S. Garn
Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 8

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Author: U.S. Global Change Research Program
Publisher: Cambridge University Press
ISBN: 0521144078
Category : Business & Economics
Languages : en
Pages : 193

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Summarizes the science of climate change and impacts on the United States, for the public and policymakers.

Author: Thomas Karl
Publisher:
ISBN:
Category : Droughts
Languages : en
Pages : 382

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Author: William J. Mitsch
Publisher: John Wiley & Sons
ISBN: 047028630X
Category : Technology & Engineering
Languages : en
Pages : 309

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New focused text introduces readers to wetland ecosystems and systems approaches to studying wetlands With its comprehensive coverage of wetland science, management, and restoration, Mitsch and Gosselink's Wetlands has been the premier reference on wetlands for more than two decades. Now, the coverage of specific wetland ecosystem types from earlier editions of this acclaimed work has been updated, revised, and supplemented with additional content in order to create this new text focusing exclusively on wetland ecosystems. This book now complements Wetlands, Fourth Edition. Following an introduction to ecosystems in general and wetland ecosystems in particular, Wetland Ecosystems examines the major types of wetlands found throughout the world: coastal wetlands, freshwater marshes and forested swamps, and peatlands. The final chapter reviews three fundamental systems approaches to studying wetlands: mesocosms, full-scale experimental ecosystems, and mathematical modeling. This new text features: Updated descriptions of the hydrology, biogeochemistry, and biology of the main types of wetlands found in the world New content introducing general ecosystems, wetland ecosystems, whole ecosystem and mesocosm experiments with wetlands, and systems ecology and modeling A detailed description of the ecosystem services provided by wetlands A broad international scope, including many examples of wetlands located outside North America Two new coauthors offering new perspectives and additional insights into the latest ecosystem and modeling techniques An abundance of illustrations helps readers understand how different biological communities and the abiotic environment in wetland ecosystems interact and function. Tables and text boxes provide at-a-glance summaries of key information. Lastly, each chapter concludes with a list of recommended readings. This text has been designed as an introduction for students and professionals in wetland ecology and management, general ecology, environmental science, and natural resource management.

Author: D. G. George
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: D. Glen George
Publisher: Springer
ISBN: 0792350553
Category : Science
Languages : en
Pages : 323

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If present trends continue, most climatologists agree that the concentration of carbon dioxide in the atmosphere will have doubled by the year 2050. This increase in CO 2 will have a major effect on the global climate and substantially alter the physical, chemical and biological characteristics of lakes throughout the world. In recent years, it has become clear that year-to-year changes in the weather have a major effect on the seasonal dynamics of lakes. Many water quality problems that were once regarded as "local" phenomena are now known to be influenced by changes in the weather that operate on a regional or even global scale. For example, blooms of toxic blue-green algae can be induced by prolonged reductions in the intensity of wind-mixing as well as increased supplies of nutrients. Long-term studies in the English Lake District have shown that many of these variations are quasi-cyclical in nature and can be related to long-term changes in the distribution of atmospheric pressure over the Atlantic Ocean. It is not yet clear what effect these changes have on the dynamics of European lakes but much of the historical data required to extend these analyses to continental Europe is already available. In the early 1970s the International Biological Programme served as a particularly effective focus for comparative limnological research in eastern as well as western Europe.