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Reconstructing Coastal Forest Retreat And Marsh Migration Response To Historical Sea Level Rise
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Book Synopsis Reconstructing Coastal Forest Retreat and Marsh Migration Response to Historical Sea Level Rise by : Nathalie Schieder
Download or read book Reconstructing Coastal Forest Retreat and Marsh Migration Response to Historical Sea Level Rise written by Nathalie Schieder and published by . This book was released on 2017 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change assessments predict that rates of relative sea level rise will increase in the future, leading to enhanced inundation of low-lying coastal regions and a 20 – 50 % decline in salt marsh area by 2100. Global sea level rise began accelerating in the late 19th to early 20th century, and local rates along the U.S. mid-Atlantic coast are twice as fast as global estimates. Frequent flooding and salt stress associated with sea level rise lead to coastal transgression, and the survival of ecosystems depends on their ability to migrate inland faster than they erode and submerge. Here, I compared aerial imagery analyses and field measurements to test the hypothesis that marsh migration into retreating terrestrial forests is fundamentally tied to sea level rise, and that sea level rise does not necessarily lead to overall habitat loss. For my first chapter, I compared the areal salt marsh extent between historical topographic maps and modern aerial imageries across the entire Chesapeake Bay, and found that marsh migration into terrestrial forests largely compensated for marsh erosion at the seaward edge during the last century. This emphasizes that the location of coastal ecosystems changes rapidly on centennial timescales, and that sea level rise does not necessarily lead to overall habitat loss. For my second chapter, I reconstructed the position of coastal treelines through time at five study sites along the U.S. mid-Atlantic coast to identify long- and short- term drivers of coastal forest retreat. My findings suggest that 20th century migration rates greatly exceed pre-industrial rates (
Author :Intergovernmental Panel on Climate Change (IPCC) Publisher :Cambridge University Press ISBN 13 :9781009157971 Total Pages :755 pages Book Rating :4.1/5 (579 download)
Book Synopsis The Ocean and Cryosphere in a Changing Climate by : Intergovernmental Panel on Climate Change (IPCC)
Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.
Book Synopsis Past Responses to Climate Change by : Rebecca Marie Cripps
Download or read book Past Responses to Climate Change written by Rebecca Marie Cripps and published by . This book was released on 2009 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-term persistence of coastal wetlands depends on maintenance of surface elevations relative to sea-level rise also in the presence of other natural and anthropogenic stressors. To predict coastal marsh response to future sea-level rise, it is important to understand how marshes responded to past sea-level rise. The objective of this study was to reconstruct vegetation histories from sediment cores collected in Big Branch NWR, Louisiana, USA, Pearl River WMA, Louisiana, USA, and Grand Bay NERR, Mississippi, USA. A dichotomous key was created using characteristics of modern plant species common in coastal marshes of the northern Gulf of Mexico, which was used to identify vegetative fragments preserved in cores. Cores were radiocarbon dated and also examined for soil characteristics (bulk density, organic content). Vegetation and soil characteristic data were processed using SiZer to determine significant shifts or changes of vegetative community and soil characteristics over time. Several significant shifts in the vegetative communities were detected at all sites (Big Branch: six shifts; Pearl River: four shifts; Grand Bay: four shifts) in addition to multiple significant shifts in bulk density (Big Branch: five shifts; Pearl River: three shifts; Grand Bay: two shifts). Results indicate that these brackish marshes have maintained surface elevations relative to sea-level through both physical and biological processes. Extended periods of organic matter accumulation (demonstrated by presence of preserved vegetation) were interrupted by periods/pulses of sediment deposition (demonstrated by increases in bulk density and decreases in organic matter content). The approach developed in this project will aid in identifying and interpreting past changes in coastal wetlands in response to sea-level rise and other global change factors.
Book Synopsis Impacts of Sea Level Rise on Tidal Wetland Extent and Distribution by : Molly Mitchell
Download or read book Impacts of Sea Level Rise on Tidal Wetland Extent and Distribution written by Molly Mitchell and published by . This book was released on 2018 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tidal marshes are a major ecological resource in Virginia and a driver of many estuarine functions. Therefore, the long term sustainability of tidal marsh ecosystems is a question of great interest in the research community. Sea level is rising at an unusually high rate in the Chesapeake Bay relative to most of the Atlantic coastline, putting Bay marshes at high risk from drowning and erosion. Sea level rise-driven salinity changes communities and alters ecosystem services. Understanding the patterns of change and the importance of different drivers of change is critical to tidal marsh sustainability. The overarching goal of this research is to examine how changes in natural and anthropogenic factors interact to affect tidal wetland distribution, extent and plant composition with the intent of promoting coastal resiliency to sea level rise impacts through informed coastal management. I quantified changes in marsh extent over the past 40 years and related changes in marsh extent to sea level rise and other drivers of change. Then I examined shifts in plant community composition throughout the Chesapeake Bay, VA, looking for signals of increased inundation and salinity. In small headwater systems, I explored the utility of these changes in plant composition for predicting soil sulfur content (an early signal of salinity intrusion). These changes in marshes from the past 40 years were used to elucidate results from an elevation-based model of future marsh persistence under accelerating sea level rise. Several lessons emerged from this dissertation: 1. Analyses of changes in tidal marsh extent and plant communities are complementary, clarifying vulnerabilities and prognosis under future conditions. 2. Human shoreline use (e.g., development, shoreline hardening, boating activity) can dominate physical processes to alter the marsh response to sea level rise. 3. Defining sediment availability for a given marsh may not be sufficient to determine its potential for expansion or persistence under sea level rise. 5. Marsh plant communities can be an early signal of change, showing shifts in inundation frequency before there is any change in marsh extent. 6. Tidal marshes will continue to decline over the next 100 years. However, most of the loss will be in low salinity, riverine marshes. Some high salinity, Bayfront marshes will expand if the land they need to migrate is preserved. 7. Tidal marsh response to sea level rise has, and will continue to, vary by marsh form, geologic setting, location in the estuary, and surrounding land use decisions. 9. Targeted land use decisions coupled with active restoration may help minimize future marsh loss.
Book Synopsis Federal Scientists and Engineers by :
Download or read book Federal Scientists and Engineers written by and published by . This book was released on 1989 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis of Adaptation Options for Coastal Areas by :
Download or read book Synthesis of Adaptation Options for Coastal Areas written by and published by . This book was released on 2008 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecosystems of California by : Harold Mooney
Download or read book Ecosystems of California written by Harold Mooney and published by Univ of California Press. This book was released on 2016-01-19 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-anticipated reference and sourcebook for CaliforniaÕs remarkable ecological abundance provides an integrated assessment of each major ecosystem typeÑits distribution, structure, function, and management. A comprehensive synthesis of our knowledge about this biologically diverse state, Ecosystems of California covers the state from oceans to mountaintops using multiple lenses: past and present, flora and fauna, aquatic and terrestrial, natural and managed. Each chapter evaluates natural processes for a specific ecosystem, describes drivers of change, and discusses how that ecosystem may be altered in the future. This book also explores the drivers of CaliforniaÕs ecological patterns and the history of the stateÕs various ecosystems, outlining how the challenges of climate change and invasive species and opportunities for regulation and stewardship could potentially affect the stateÕs ecosystems. The text explicitly incorporates both human impacts and conservation and restoration efforts and shows how ecosystems support human well-being. Edited by two esteemed ecosystem ecologists and with overviews by leading experts on each ecosystem, this definitive work will be indispensable for natural resource management and conservation professionals as well as for undergraduate or graduate students of CaliforniaÕs environment and curious naturalists.
Book Synopsis Greenhouse Effect and Sea Level Rise by : Michael C. Barth
Download or read book Greenhouse Effect and Sea Level Rise written by Michael C. Barth and published by Springer. This book was released on 2012-03-08 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winston Churchill, whose output as a writer was so prodigious that one might reasonably wonder whether he was paid by the page, was him self put off by long works. As prime minister of Great Britain, he once pushed away a report from a junior minister, observing, "This paper, by its very length, defends itself against the risk of being read." No doubt some laymen will glance at the study that follows and be deterred from further consideration by the fact that the study is a scien tific one. If that is a hurdle for you, I hope you will join me in getting over it, because, if you do, you will find that the authors have quite a story to tell. That story is about change-the possibility that the climatic patterns of the world are in a transition to warmer weather that could lead to a rise in the sea level. You may not have thought much about the sea level previously; it was something we took for granted. But since we have taken it as a given for so long, the adjustments we may have to make will be profound. When you stop to think about all the areas of our lives that could be affected by climatic change, you will be amazed: we have planned our cities, developed our manufacturing techniques, and chosen our en vironmental protection strategies on the assumption of a stable seaJevel.
Book Synopsis Concepts and Controversies in Tidal Marsh Ecology by : M.P. Weinstein
Download or read book Concepts and Controversies in Tidal Marsh Ecology written by M.P. Weinstein and published by Springer Science & Business Media. This book was released on 2000-10-31 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tidal salt marshes are viewed as critical habitats for the production of fish and shellfish. As a result, considerable legislation has been promulgated to conserve and protect these habitats, and much of it is in effect today. The relatively young science of ecological engineering has also emerged, and there are now attempts to reverse centuries-old losses by encouraging sound wetland restoration practices. Today, tens of thousands of hectares of degraded or isolated coastal wetlands are being restored worldwide. Whether restored wetlands reach functional equivalency to `natural' systems is a subject of heated debate. Equally debatable is the paradigm that depicts tidal salt marshes as the `great engine' that drives much of the secondary production in coastal waters. This view was questioned in the early 1980s by investigators who noted that total carbon export, on the order of 100 to 200 g m-2 y-1 was of much lower magnitude than originally thought. These authors also recognized that some marshes were either net importers of carbon, or showed no net exchange. Thus, the notion of `outwelling' has become but a single element in an evolving view of marsh function and the link between primary and secondary production. The `revisionist' movement was launched in 1979 when stable isotopic ratios of macrophytes and animal tissues were found to be `mismatched'. Some eighteen years later, the view of marsh function is still undergoing additional modification, and we are slowly unraveling the complexities of biogeochemical cycles, nutrient exchange, and the links between primary producers and the marsh/estuary fauna. Yet, since Teal's seminal paper nearly forty years ago, we are not much closer to understanding how marshes work. If anything, we have learned that the story is far more complicated than originally thought. Despite more than four decades of intense research, we do not yet know how salt marshes function as essential habitat, nor do we know the relative contributions to secondary production, both in situ or in the open waters of the estuary. The theme of this Symposium was to review the status of salt marsh research and revisit the existing paradigm(s) for salt marsh function. Challenge questions were designed to meet the controversy head on: Do marshes support the production of marine transient species? If so, how? Are any of these species marsh obligates? How much of the production takes place in situ versus in open waters of the estuary/coastal zone? Sessions were devoted to reviews of landmark studies, or current findings that advance our knowledge of salt marsh function. A day was also devoted to ecological engineering and wetland restoration papers addressing state-of-the-art methodology and specific case histories. Several challenge papers arguing for and against our ability to restore functional salt marshes led off each session. This volume is intended to serve as a synthesis of our current understanding of the ecological role of salt marshes, and will, it is hoped, pave the way for a new generation of research.
Author :U.S. Global Change Research Program Publisher :Cambridge University Press ISBN 13 :0521144078 Total Pages :193 pages Book Rating :4.5/5 (211 download)
Book Synopsis Global Climate Change Impacts in the United States by : U.S. Global Change Research Program
Download or read book Global Climate Change Impacts in the United States written by U.S. Global Change Research Program and published by Cambridge University Press. This book was released on 2009-08-24 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summarizes the science of climate change and impacts on the United States, for the public and policymakers.
Book Synopsis Climate Change and Indigenous Peoples in the United States by : Julie Koppel Maldonado
Download or read book Climate Change and Indigenous Peoples in the United States written by Julie Koppel Maldonado and published by Springer. This book was released on 2014-04-05 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a long history and deep connection to the Earth’s resources, indigenous peoples have an intimate understanding and ability to observe the impacts linked to climate change. Traditional ecological knowledge and tribal experience play a key role in developing future scientific solutions for adaptation to the impacts. The book explores climate-related issues for indigenous communities in the United States, including loss of traditional knowledge, forests and ecosystems, food security and traditional foods, as well as water, Arctic sea ice loss, permafrost thaw and relocation. The book also highlights how tribal communities and programs are responding to the changing environments. Fifty authors from tribal communities, academia, government agencies and NGOs contributed to the book. Previously published in Climatic Change, Volume 120, Issue 3, 2013.
Book Synopsis Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States by : William H. Conner
Download or read book Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States written by William H. Conner and published by Springer Science & Business Media. This book was released on 2007-06-24 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book draws together the latest findings on the hydrological processes, community organization, and stress physiology of freshwater, tidally influenced land-margin forests of the southeastern United States. It describes the land use history that led to the restricted distribution of these wetlands, and provides descriptions of the hydrology, soils, biogeochemistry, and physiological ecology of these systems, highlighting the similarities shared among tidal freshwater forested wetlands.
Book Synopsis Salt Marshes by : Duncan M. FitzGerald
Download or read book Salt Marshes written by Duncan M. FitzGerald and published by Cambridge University Press. This book was released on 2021-04-22 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multidisciplinary review of salt marshes, describing how they function and respond to external pressures such as sea-level rise.
Book Synopsis Climate Change and Cities by : Cynthia Rosenzweig
Download or read book Climate Change and Cities written by Cynthia Rosenzweig and published by . This book was released on 2018-03-29 with total page 855 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate Change and Cities bridges science-to-action for climate change adaptation and mitigation efforts in cities around the world.
Download or read book Wetland Plants written by Julie K. Cronk and published by CRC Press. This book was released on 2016-04-19 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed account of the biology and ecology of vascular wetland plants and their applications in wetland plant science, Wetland Plants: Biology and Ecology presents a synthesis of wetland plant studies and reviews from biology, physiology, evolution, genetics, community and population ecology, environmental science, and engineering. It provides a
Book Synopsis Effects of Changes in Stratospheric Ozone and Global Climate by : United Nations Environment Programme
Download or read book Effects of Changes in Stratospheric Ozone and Global Climate written by United Nations Environment Programme and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coastal lagoons by : Pierre Lasserre
Download or read book Coastal lagoons written by Pierre Lasserre and published by . This book was released on 1982 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
