Masters Theses in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States and Canada

Masters Theses in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States and Canada PDF Author:
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 442

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Agronomy News

Agronomy News PDF Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 850

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Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.

Nutrient Criteria Technical Guidance Manual

Nutrient Criteria Technical Guidance Manual PDF Author:
Publisher:
ISBN:
Category : Eutrophication
Languages : en
Pages : 258

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Riparian Areas

Riparian Areas PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309082951
Category : Science
Languages : en
Pages : 449

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Book Description
The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.

Selected Water Resources Abstracts

Selected Water Resources Abstracts PDF Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 972

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Biogeochemistry of Wetlands

Biogeochemistry of Wetlands PDF Author: K. Ramesh Reddy
Publisher: CRC Press
ISBN: 0429531931
Category : Science
Languages : en
Pages : 926

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The globally important nature of wetland ecosystems has led to their increased protection and restoration as well as their use in engineered systems. Underpinning the beneficial functions of wetlands are a unique suite of physical, chemical, and biological processes that regulate elemental cycling in soils and the water column. This book provides an in-depth coverage of these wetland biogeochemical processes related to the cycling of macroelements including carbon, nitrogen, phosphorus, and sulfur, secondary and trace elements, and toxic organic compounds. In this synthesis, the authors combine more than 100 years of experience studying wetlands and biogeochemistry to look inside the black box of elemental transformations in wetland ecosystems. This new edition is updated throughout to include more topics and provide an integrated view of the coupled nature of biogeochemical cycles in wetland systems. The influence of the elemental cycles is discussed at a range of scales in the context of environmental change including climate, sea level rise, and water quality. Frequent examples of key methods and major case studies are also included to help the reader extend the basic theories for application in their own system. Some of the major topics discussed are: Flooded soil and sediment characteristics Aerobic-anaerobic interfaces Redox chemistry in flooded soil and sediment systems Anaerobic microbial metabolism Plant adaptations to reducing conditions Regulators of organic matter decomposition and accretion Major nutrient sources and sinks Greenhouse gas production and emission Elemental flux processes Remediation of contaminated soils and sediments Coupled C-N-P-S processes Consequences of environmental change in wetlands# The book provides the foundation for a basic understanding of key biogeochemical processes and its applications to solve real world problems. It is detailed, but also assists the reader with box inserts, artfully designed diagrams, and summary tables all supported by numerous current references. This book is an excellent resource for senior undergraduates and graduate students studying ecosystem biogeochemistry with a focus in wetlands and aquatic systems.

Forest and Rangeland Soils of the United States Under Changing Conditions

Forest and Rangeland Soils of the United States Under Changing Conditions PDF Author: Richard V. Pouyat
Publisher: Springer Nature
ISBN: 3030452166
Category : Science
Languages : en
Pages : 306

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Book Description
This open access book synthesizes leading-edge science and management information about forest and rangeland soils of the United States. It offers ways to better understand changing conditions and their impacts on soils, and explores directions that positively affect the future of forest and rangeland soil health. This book outlines soil processes and identifies the research needed to manage forest and rangeland soils in the United States. Chapters give an overview of the state of forest and rangeland soils research in the Nation, including multi-decadal programs (chapter 1), then summarizes various human-caused and natural impacts and their effects on soil carbon, hydrology, biogeochemistry, and biological diversity (chapters 2–5). Other chapters look at the effects of changing conditions on forest soils in wetland and urban settings (chapters 6–7). Impacts include: climate change, severe wildfires, invasive species, pests and diseases, pollution, and land use change. Chapter 8 considers approaches to maintaining or regaining forest and rangeland soil health in the face of these varied impacts. Mapping, monitoring, and data sharing are discussed in chapter 9 as ways to leverage scientific and human resources to address soil health at scales from the landscape to the individual parcel (monitoring networks, data sharing Web sites, and educational soils-centered programs are tabulated in appendix B). Chapter 10 highlights opportunities for deepening our understanding of soils and for sustaining long-term ecosystem health and appendix C summarizes research needs. Nine regional summaries (appendix A) offer a more detailed look at forest and rangeland soils in the United States and its Affiliates.

Freshwater Ecology

Freshwater Ecology PDF Author: Walter K. Dodds
Publisher: Elsevier
ISBN: 0080477909
Category : Science
Languages : en
Pages : 591

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Book Description
Freshwater Ecology: Concepts and Environmental Applications is a general text covering both basic and applied aspects of freshwater ecology and serves as an introduction to the study of lakes and streams. Issues of spatial and temporal scale, anthropogenic impacts, and application of current ecological concepts are covered along with ideas that are presented in more traditional limnological texts. Chapters on biodiversity, toxic chemicals, extreme and unusual habitats, and fisheries increase the breadth of material covered. The book includes an extensive glossary, questions for thought, worked examples of equations, and real-life problems. - Broad coverage of groundwaters, streams, wetlands, and lakes - Features basic scientific concepts and environmental applications throughout - Includes many figures, sidebars of fascinating applications, and biographies of practicing aquatic ecologists - Materials are presented to facilitate learning, including an extensive glossary, questions for thought, worked examples of equations, and real life problems - Written at a level understandable to most undergraduate students, with explanations of complex contemporary concepts in freshwater ecology described to promote understanding - Featuring small chapters that mainly stand alone, this book can be read in the order most suited to the specific application

Spring Meeting

Spring Meeting PDF Author: American Geophysical Union. Meeting
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 544

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Soils and Fertilizers

Soils and Fertilizers PDF Author:
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 1066

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