Surface-water and Ground-water Quality in the Powell Creek and Armstrong Creek Watersheds, Dauphin County, Pennsylvania, July-September 2001 PDF Download
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Category : Dauphin County Conservation District (Pa.)
Languages : en
Pages : 6
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Book Description
Author:
Publisher:
ISBN:
Category : Dauphin County Conservation District (Pa.)
Languages : en
Pages : 6
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Book Description
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Category : Geological mapping
Languages : en
Pages : 194
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Category : Law reports, digests, etc
Languages : en
Pages : 230
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Category : Eutrophication
Languages : en
Pages : 258
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Book Description
Author: James L. Plafkin
Publisher:
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Category : Water quality bioassay
Languages : en
Pages : 0
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Author: David K. Mueller
Publisher:
ISBN:
Category : Nutrient pollution of water
Languages : en
Pages : 32
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Book Description
Nutrients in water are necessary for productive aquatic ecosystems, but in high concentrations, nutrients such as nitrates, ammonia, and phosphates can adversely affect aquatic life and human health.
Author: Frédérique Van Gijsegem
Publisher: Springer Nature
ISBN: 303061459X
Category : Science
Languages : en
Pages : 298
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Book Description
This book provides a detailed review of many different aspects of pathogens, from the effects of single base pair mutations to large-scale control options, bringing into a single volume over 100 years of findings from thousands of researchers worldwide. Diseases caused by soft rot Pectobacteriaceae (SRP) are a major cause of loss to crop, vegetables and ornamental plants worldwide, and have been found on all continents except Antarctica. While different aspects of the SRP have appeared in other books on plant disease, no book, until now, has been dedicated solely to them.
Author: Ivan Nagelkerken
Publisher: Springer Science & Business Media
ISBN: 9048124069
Category : Science
Languages : en
Pages : 617
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Book Description
Mangrove forests, seagrass beds, and coral reefs are circumtropical ecosystems that are highly productive, and provide many important biological functions and economic services. These ecosystems cover large surface areas in the shallow tropical coastal seascape but have suffered from serious human degradation, especially in the last few decades. Part of their diversity, productivity, and functioning seems to be based on their juxtaposition. Especially in the last decade significant advances have been made on new insights into their ecological connectivity. This authoritative book provides a first-time comprehensive review of the major ecological interactions across tropical marine ecosystems that result from the mutual exchange of nutrients, organic matter, fish, and crustaceans. A group of leading authors from around the world reviews the patterns and underlying mechanisms of important biogeochemical and biological linkages among tropical coastal ecosystems in 15 chapters. Included are chapters that review cutting-edge tools to study and quantify these linkages, the importance of such linkages for fisheries, and how tropical ecosystems should be conserved and managed for sustainable use by future generations. The book uses examples from all over the world and provides an up-to-date review of the latest published literature. This book is a ‘must read’ for professionals working on the conservation, management, and ecology of mangrove, seagrass and coral reef ecosystems.
Author: John D. Speth
Publisher: Springer Science & Business Media
ISBN: 1441967338
Category : Social Science
Languages : en
Pages : 259
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Book Description
Since its inception, paleoanthropology has been closely wedded to the idea that big-game hunting by our hominin ancestors arose, first and foremost, as a means for acquiring energy and vital nutrients. This assumption has rarely been questioned, and seems intuitively obvious—meat is a nutrient-rich food with the ideal array of amino acids, and big animals provide meat in large, convenient packages. Through new research, the author of this volume provides a strong argument that the primary goals of big-game hunting were actually social and political—increasing hunter’s prestige and standing—and that the nutritional component was just an added bonus. Through a comprehensive, interdisciplinary research approach, the author examines the historical and current perceptions of protein as an important nutrient source, the biological impact of a high-protein diet and the evidence of this in the archaeological record, and provides a compelling reexamination of this long-held conclusion. This volume will be of interest to researchers in Archaeology, Evolutionary Biology, and Paleoanthropology, particularly those studying diet and nutrition.
Author: John Birks
Publisher: Routledge
ISBN: 1444119176
Category : Science
Languages : en
Pages : 556
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Book Description
The Holocene spans the 11,500 years since the end of the last Ice Age and has been a period of major global environmental change. However the rate of change has accelerated during the last hundred years, due largely to human impacts and this has led to a growing concern for the future of our environmental resources. Global Change in the Holocene demonstrates how reconstructing the record of past environmental change can provide us with essential knowledge about how our environment works and presents the reader with an informed viewpoint from which to project realistic future scenarios. The book brings together key techniques that are widely used in Holocene research, such as radiocarbon dating, dendrochronology and sediment analysis and offers a comprehensive analysis of various archives of environmental change including instrumental and documentary records, corals, lake sediments, glaciers and ice cores. This reference will be an informative and cutting-edge resource for all researchers in the fields of climate change, environmental science, geography, palaeoecology and archaeology.
