Download or read book Spatial Variation of Atmospheric Nitrogen Deposition and Critical Loads for Aquatic Ecosystems in the Greater Yellowstone Area written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmospheric Nitrogen Deposition to Global Forests written by Enzai Du and published by Elsevier. This book was released on 2023-02-15 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric Nitrogen Deposition in Global Forests: Spatial Variation, Impacts, and Management Implications provides the most updated and comprehensive knowledge on spatial variation and ecological impacts of reactive nitrogen deposition in global forests, as well as forest management options to mitigate the negative impacts. Written and edited by international experts in the field, this book synthesizes recent research developments and insights in monitoring and modeling of nitrogen deposition in global forests. It also assesses ecological impacts of enhanced nitrogen deposition on forest structure and function, and responses of forest ecosystems to decreasing nitrogen deposition in regions such as the European Union and North America. This book also reviews indicators and thresholds for nitrogen saturation in global forests and analyzes remediation options to reduce impacts of excess nitrogen deposition. Atmospheric Nitrogen Deposition in Global Forests: Spatial Variation, Impacts, and Management Implications is an important resource for researchers in forestry and biodiversity conservation, as well as graduate students, policymakers and others who want to understand environmental issues of reactive nitrogen deposition in global forests. Presents spatial variation of nitrogen deposition in forests at global scale Offers a systematic view of ecological impacts of enhanced nitrogen deposition Discusses responses of forest ecosystems r to decreasing nitrogen deposition Provides expert research and findings on forest management options to remediate negative impacts
Download or read book Critical Nitrogen Deposition Loads in High elevation Lakes of the Western US Inferred from Paleolimnological Records written by Jasmine E. Saros and published by . This book was released on 2010 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Critical loads of nitrogen (N) from atmospheric deposition were determined for alpine lake ecosystems in the western US using fossil diatom assemblages in lake sediment cores. Changes in diatom species over the last century were indicative of N enrichment in two areas, the eastern Sierra Nevada, starting between 1960 and 1965, and the Greater Yellowstone Ecosystem, starting in 1980. In contrast, no changes in diatom community structure were apparent in lakes of Glacier National Park. To determine critical N loads that elicited these community changes, we modeled wet nitrogen deposition rates for the period in which diatom shifts first occurred in each area using deposition data spanning from 1980 to 2007. We determined a critical load of 1.4 kg N ha-1 year-1 wet N deposition to elicit key nutrient enrichment effects on diatom communities in both the eastern Sierra Nevada and the Greater Yellowstone Ecosystem.
Download or read book Air Pollution and Its Impacts on U S National Parks written by Timothy J. Sullivan and published by CRC Press. This book was released on 2017-02-03 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: A variety of air pollutants are emitted into the atmosphere from human-caused and natural emissions sources throughout the United States and elsewhere. These contaminants impact sensitive natural resources in wilderness, including the national parks. The system of national parks in the United States is among our greatest assets. This book provides a compilation and synthesis of current scientific understanding regarding the causes and effects of these pollutants within national park lands. It describes pollutant emissions, deposition, and exposures; it identifies the critical (tipping point) loads of pollutant deposition at which adverse impacts are manifested.
Download or read book Atmospheric Nitrogen Deposition in the Western United States written by Sarah Marie Anderson and published by . This book was released on 2017 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anthropogenic activities have greatly modified the way nitrogen moves through the atmosphere and terrestrial and aquatic environments. Excess reactive nitrogen generated through fossil fuel combustion, industrial fixation, and intensification of agriculture is not confined to anthropogenic systems but leaks into natural ecosystems with consequences including acidification, eutrophication, and biodiversity loss. A better understanding of where excess nitrogen originates and how that changes over time is crucial to identifying when, where, and to what degree environmental impacts occur. A major route into ecosystems for excess nitrogen is through atmospheric deposition. Excess nitrogen is emitted to the atmosphere where it can be transported great distances before being deposited back to the Earth's surface.
Download or read book Biogeochemical Responses to Atmospheric Nitrogen Deposition in Subalpine Ecosystems of the Cascades written by Justin Paul Poinsatte and published by . This book was released on 2017 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: We examined the influence of snow regime on subalpine ecosystem C and N cycling at Mount Rainier under ambient conditions and in climate change scenarios. Timing of snow release influenced ecosystem C and N storage and loss. Climate change may reduce snow accumulation by up to 80% at Mount Rainier by 2050. Snowpack loss may enhance ecosystem C and N accumulation during the growing season and increase winter N leaching.
Download or read book Relationship Between Microbes and the Environment for Sustainable Ecosystem Services Volume 1 written by Jastin Samuel and published by Elsevier. This book was released on 2022-05-18 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relationship Between Microbes and Environment for Sustainable Ecosystem Services, Volume One: Microbial Products for Sustainable Ecosystem Services promotes advances in sustainable solutions, value-added products, and fundamental research in microbes and the environment. Topics include advanced and recent discoveries in the use of microbes for sustainable development. Users will find reference information ranging from the description of various microbial applications for sustainability in different aspects of food, energy, the environment and social development. Volume One includes the direct and indirect role of bacteria, fungi, actinomycetes, viruses, mycoplasma and protozoans in the development of products contributing towards sustainable. The book provides a holistic approach to the most recent advances in the application of various microbes as a biotechnological tool for a vast range of sustainable applications, modern practices, exploring futuristic strategies to harness its full potential. Covers the latest developments, recent applications and future research avenues in microbial biotechnology for sustainable development Includes expressive tables and figures with concise information about sustainable ecosystem services Provides a wide variety of applications and modern practices of harnessing the potential of microbes in the environment
Download or read book Ecological Dynamics on Yellowstone s Northern Range written by National Research Council and published by National Academies Press. This book was released on 2002-01-01 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecological Dynamics on Yellowstone's Northern Range discusses the complex management challenges in Yellowstone National Park. Controversy over the National Park Service's approach of "natural regulation" has heightened in recent years because of changes in vegetation and other ecosystem components in Yellowstone's northern range. Natural regulation minimizes human impacts, including management intervention by the National Park Service, on the park ecosystem. Many have attributed these changes to increased size of elk and other ungulate herds. This report examines the evidence that increased ungulate populations are responsible for the changes in vegetation and that the changes represent a major and serious change in the Yellowstone ecosystem. According to the authors, any human intervention to protect species such as the aspen and those that depend on them should be prudently localized rather than ecosystem-wide. An ecosystem-wide approach, such as reducing ungulate populations, could be more disruptive. The report concludes that although dramatic ecological change does not appear to be imminent, approaches to dealing with potential human-caused changes in the ecosystem, including those related to climate change, should be considered now. The need for research and public education is also compelling.
Download or read book Measuring Critical Loads of Nitrogen Deposition in the U S written by Rebecca G. Nisley and published by . This book was released on 2011 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air pollution is a serious environmental and public health problem resulting from emissions by power and industrial plants, motor vehicles, and agriculture. Sulfur (S) and nitrogen (N) emissions are two components of air pollution and cause wide-ranging, long-term threats to the health of forest, range, and wetland ecosystems. Sulfur and nitrogen gas emissions can combine with moisture in the air to become acidic molecules that fall to earth as acid deposition (commonly called acid rain, fog, or snow). Most pollution control efforts have focused on sulfur dioxide (SO2) emissions and these efforts have shown some positive results, with a measurable reduction in acidity of some lakes and wetlands. Negative impacts of nitrogen in deposition were overlooked because nitrogen is usually thought of as a fertilizer or a S2good thing.S3 This is not always the case: Elevated N availability can also result in nutrient imbalances that increase plant susceptibility to stressors such as cold, drought, or pests. For example, winter injury in high-elevation red spruce can be attributed to elevated N. The most serious effect of excess N, however, is the alteration of ecosystem diversity. In most terrestrial ecosystems in the United States, plant growth is limited by nitrogen availability. Thus, when additional nitrogen is added to an ecosystem, native plants (those that are original to a site) may lose their competitive edge. The excess nitrogen allows other plants (which often are nonnative invasive species that do not thrive in low nitrogen) to out-compete native plants and thus alter the species composition of an ecosystem. For example, in Joshua Tree National Park in southern California, N deposition favors the production of sufficient invasive grass biomass to sustain fires that threaten the survival of the namesake species.
Download or read book Modelling and Mapping of Atmospheric Nitrogen and Sulphur Deposition and Critical Loads for Ecosystem Specific Assessment of Threats to Biodiversity in Germany PINETI Pollutant INput and EcosysTem Impact written by and published by . This book was released on 2014 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmospheric Reactive Nitrogen in China written by Xuejun Liu and published by Springer Nature. This book was released on 2019-10-04 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric reactive nitrogen (N) emissions, as an important component of global N cycle, have been significantly altered by anthropogenic activities, and consequently have had a global impact on air pollution and ecosystem services. Due to rapid agricultural, industrial, and urban development, China has been experiencing an increase in reactive N emissions and deposition since the late 1970s. Based on a literature review, this book summarizes recent research on: 1) atmospheric reactive N in China from a global perspective (Chapter 1); 2) atmospheric reactive N emissions, deposition and budget in China (Chapters 2-5); 3) the contribution of atmospheric reactive N to air pollution (e.g., haze, surface O3, and acid deposition) (Chapters 6-8); 4) the impacts of N deposition on sensitive ecosystems (e.g., forests, grasslands, deserts and lakes) (Chapters 9-12); and 5) the regulatory strategies for mitigation of atmospheric reactive N pollution from agricultural and non-agricultural sectors in China (Chapters 13-14). As such it offers graduate students, researchers, educators in agricultural, ecological and environmental sciences, and policy makers a glimpse of the environmental issues related to reactive N in China .
Download or read book Atmospheric Nitrogen Deposition to Non agricultural Freshwater Ecosystems in the Atlantic Provinces written by Emily Jennifer Bonnell and published by . This book was released on 2002 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geography of Nitrate and Sulfate Atmospheric Wet Deposition in the Southern Rocky Mountains written by Ivan Guillermo Valles and published by . This book was released on 2018 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from the National Atmospheric Deposition Program’s National Trends Network, the United States Geological Survey’s Rocky Mountain Regional Snowpack Chemistry Program and the United States Environmental Protection Agency’s Air Markets Program were analyzed to identify spatial relationships amongst atmospheric wet deposition concentrations of nitrate and sulfate. The analysis relates atmospheric wet deposition, commonly known as acid rain, to two distinct variables—as a function of elevation and also as a function of proximity to major regional electricity generating stations. This study focuses on the Southern Rocky Mountain region of the United States, and integrates depositional and emissions point-source data from Arizona, Colorado, New Mexico, Utah, and Wyoming. Previous studies have identified wide-ranging adverse effects upon terrestrial and aquatic ecosystems such as nitrogen saturation, changes in plant biodiversity, and soil nutrient cycling where atmospheric wet deposition is the suspected primary means of pollutant transport and delivery. Atmospheric wet deposition then possess the ability to, in a broad sense, impair the United States’ agricultural, economic, and public health sectors; as a result, the United States Congress, beginning in the 1970’s had legislated a number of acts and amendments funding research focused on studying and attenuating airborne pollution. However, the spatiotemporal geography of atmospheric wet deposition has been understudied and limited in scope, especially across the Western United States’ high elevation lifezones. As a result, it is currently difficult to assess how the depositions of nitrate and sulfate will respond spatially or temporally as a function of emissions outputs of nitrous and sulfurous oxides from major regional electricity generating facilities. This research builds upon the existing geographic knowledge of atmospheric wet deposition by combining precipitation, snowpack, and emission datasets to analyze specific spatial relationships. The study concludes that levels of atmospheric wet deposition concentrations do in fact show trend changes in relation to elevation; it also finds that atmospheric wet deposition concentrations show relationships that strengthen with increased proximity to regional electricity generating stations. The significance of this research is that the spatial distribution of atmospheric wet deposition is discernible, and with improved application and design, likely capable of forecasting the phenomenon.
Download or read book Thriving on Our Changing Planet A Decadal Strategy for Earth Observation from Space written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-06-18 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: We live on a dynamic Earth shaped by both natural processes and the impacts of humans on their environment. It is in our collective interest to observe and understand our planet, and to predict future behavior to the extent possible, in order to effectively manage resources, successfully respond to threats from natural and human-induced environmental change, and capitalize on the opportunities â€" social, economic, security, and more â€" that such knowledge can bring. By continuously monitoring and exploring Earth, developing a deep understanding of its evolving behavior, and characterizing the processes that shape and reshape the environment in which we live, we not only advance knowledge and basic discovery about our planet, but we further develop the foundation upon which benefits to society are built. Thriving on Our Changing Planet: A Decadal Strategy for Earth Observation from Space (National Academies Press, 2018) provides detailed guidance on how relevant federal agencies can ensure that the United States receives the maximum benefit from its investments in Earth observations from space, while operating within realistic cost constraints. This short booklet, designed to be accessible to the general public, provides a summary of the key ideas and recommendations from the full decadal survey report.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 1226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Impacts of Climate Change written by National Research Council and published by National Academies Press. This book was released on 2008-12-07 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world's climate is changing, and it will continue to change throughout the 21st century and beyond. Rising temperatures, new precipitation patterns, and other changes are already affecting many aspects of human society and the natural world. In this book, the National Research Council provides a broad overview of the ecological impacts of climate change, and a series of examples of impacts of different kinds. The book was written as a basis for a forthcoming illustrated booklet, designed to provide the public with accurate scientific information on this important subject.
Download or read book Integrated Geoscience Studies in the Greater Yellowstone Area written by Lisa A. Morgan and published by . This book was released on 2007 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
