Download or read book Sediment Accretion and Tidal Marsh Formation at a Santa Clara Valley Tidal Marsh written by Elizabeth Burke Watson and published by . This book was released on 2002 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Change in San Francisco Estuary Tidal Marshes written by Elizabeth Burke Watson and published by . This book was released on 2006 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Slough Channel Network and Marsh Plain Morphodynamics in a Rapidly Accreting Tidal Marsh Restoration on Diked Subsided Bayland San Francisco Estuary California written by Stuart William Siegel and published by . This book was released on 2002 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tidal Channel Meandering and Salt Marsh Development in a Marine Transgressed Incised Valley System written by Bo Li and published by ProQuest. This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been long debated whether or not tidal channels meander through space and time. If so, at what magnitude did they meander; and how did their changes in space and time relate to the morphodynamics of salt marsh development and facies configuration of transgressive valleys? Many have argued that the laws that govern the fluvial streams are equally valid for tidal channels and tidal channel networks. However, there is a lack of field measurements to support the aforementioned statements. Further, the dynamic relationship between tidal channel network development and salt marsh evolution was poorly understood in terms of erosion vs. accretion in response to sea-level changes. Also, models of salt marsh initiation and tidal channel development within transgressive valleys in the US Atlantic coastal plains are not well studied as compared with those of the North Sea in Europe. In an attempt to systematically study the dynamic relationships between the salt marshes and tidal channel networks of transgressive valleys and other system forcings (such as sediment supply, sea-level changes, topographic control, and halophyte production), I chose the Great Marsh area at Lewes, Delaware. To better address these issues, other estuarine tidal basins and incised valleys along the Delaware Bay and Atlantic coasts were studied to serve as modern analogs for the support of my findings in the Great Marsh area. The following major topics/themes are covered and explored in this research study: geologic framework of the study area, modern-ancient analogs, sources of sediment supply, morphometric properties of tidal meander planforms, construction of the paleotopography, hypsometric and volumetric analyses of the incised valley fill, Holocene evolution of the Great Marsh, modern analogs of marsh initiation and tidal meandering development, and discussions of various topics such as tidal channel network initiation and development, incised valley system's self-adjustment in response to changes in sea-level and sediment supply, and facies models as applicable to the transgressive incised valley fills. (Abstract shortened by UMI.).
Download or read book The Ecology of New England High Salt Marshes written by Scott W. Nixon and published by . This book was released on 1982 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book South San Francisco Bay Shoreline Project Santa Clara County California written by United States. Office of the Assistant Secretary of the Army (Civil Works) and published by . This book was released on 2016 with total page 1648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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: Salt marshes are highly dynamic and important ecosystems that dampen impacts of coastal storms and are an integral part of tidal wetland systems, which sequester half of all global marine carbon. They are now being threatened due to sea-level rise, decreased sediment influx, and human encroachment. This book provides a comprehensive review of the latest salt marsh science, investigating their functions and how they are responding to stresses through formation of salt pannes and pools, headward erosion of tidal creeks, marsh-edge erosion, ice-fracturing, and ice-rafted sedimentation. Written by experts in marsh ecology, coastal geomorphology, wetland biology, estuarine hydrodynamics, and coastal sedimentation, it provides a multidisciplinary summary of recent advancements in our knowledge of salt marshes. The future of wetlands and potential deterioration of salt marshes is also considered, providing a go-to reference for graduate students and researchers studying these coastal systems, as well as marsh managers and restoration scientists.
Download or read book San Francisco Estuary Invasive Spartina Project Spartina Control Program written by and published by . This book was released on 2004 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tidal Salt Marshes of the Southeast Atlantic Coast written by Richard G. Wiegert and published by . This book was released on 1990 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tidal Salt Marshes of the Southeastern Atlantic Coast written by Richard G. Wiegert and published by . This book was released on 1990 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Human Activities on Tidal Wetland Sediment Accretion Within a Salt Marsh to Mangrove Forest Transition Zone East central Florida USA written by George Joseph Wiegman and published by . This book was released on 1999 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tidal Marshes written by James G. Gosselink and published by . This book was released on 1980 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 2007-05-08 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1968 when I forsook horticulture and plant physiology to try, with the help of Sea Grant funds, wetland ecology, it didn’t take long to discover a slim volume published in 1959 by the University of Georgia and edited by R. A. Ragotzkie, L. R. Pomeroy, J. M. Teal, and D. C. Scott, entitled “Proceedings of the Salt Marsh Conference” held in 1958 at the Marine Institute, Sapelo Island, Ga. Now forty years later, the Sapelo Island conference has been the major intellectual impetus, and another Sea Grant Program the major backer, of another symposium, the “International Symposium: Concepts and Controversies in Tidal Marsh Ecology”. This one re-examines the ideas of that first conference, ideas that stimulated four decades of research and led to major legislation in the United States to conserve coastal wetlands. It is dedicated, appropriately, to two then young scientists – Eugene P. Odum and John M. Teal – whose inspiration has been the starting place for a generation of coastal wetland and estuarine research. I do not mean to suggest that wetland research started at Sapelo Island. In 1899 H. C. Cowles described successional processes in Lake Michigan freshwater marsh ponds. There is a large and valuable early literature about northern bogs, most of it from Europe and the former USSR, although Eville Gorham and R. L. Lindeman made significant contributions to the American literature before 1960. V. J.
Download or read book Marsh Sediment Accumulation and Accretion on a Rapidly Retreating Estuarine Coast written by Conor McDowell and published by . This book was released on 2017 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bombay Hook National Wildlife Refuge in coastal Delaware protects one of the most expansive salt marsh systems on the U.S. Mid-Atlantic seaboard. In recent decades, the Refuge has experienced a substantial decrease in salt marsh area along the Delaware Bay boundary by shoreface erosion and in the marsh interior by inland pool expansion. Although the origin of the pools is unknown, it has been suggested that the supply of allochthonous mineral sediment from tidal waterways to the marsh platform may be a contributing factor. To investigate whether vertical accretion of Refuge marshland is limited by sediment accumulation, a study was conducted to measure rates of mineral sediment and organic matter accumulation (mass/area/time) and accretion (length/time) using 137Cs and 210Pb chronologies developed for 19 marsh sites throughout the Refuge. To establish patterns and rates of recent historical marsh loss, an analysis of historical aerial photographs was undertaken. ☐ Results indicate that Bombay Hook NWR has lost a total of ~8.6 million m2 of marsh area since 1961. This loss was mostly caused by the formation of inland pools (~50% of area lost) and shoreface erosion along the Delaware Bay boundary (~35%), with a smaller contribution by waterway channel widening (~15%). Shoreface erosion was most prevalent in the southern half of the Refuge with some locations experiencing up to ~12 m/yr of retreat since 1961, while the northern section experienced far less retreat at 0.6 m/yr. The formation and expansion of inland pools were mostly concentrated in the northern half of the Refuge, adjacent to three freshwater impoundments constructed by the United States Fish and Wildlife Service in the late 1930s. ☐ Salt marsh accretion and mass accumulation rates measured for this study fall within the middle to upper range of similarly determined rates for undisturbed marshes of the Delaware Estuary, and rates based on 137Cs and 210Pb methods were largely in agreement. Accretion rates (137Cs) for low marsh sites averaged 0.65 cm/yr and were significantly higher than rates at high marsh sites, which averaged 0.42 cm/yr. Combined mineral and organic mass accumulation rates (137Cs) exhibited a similar difference between low and high marsh sites, averaging 0.31 g/cm2/yr and 0.13 g/cm2/yr, respectively. Mineral and organic mass accumulation rates correlated strongly with rates of accretion (R2= .85 and .79 respectively), revealing that both mineral sediment and organic matter drive marsh accretion at the Refuge, and that belowground biomass accumulation and aboveground mineral sediment deposition set the minimum and maximum rates of accretion, respectively. ☐ Marsh accretion rates measured in this study met or exceeded the rate of recent relative sea-level rise for the middle Delaware Estuary, based on the NOAA tide gauge record for Reedy Point (0.35 ± 0.05 mm/yr, 1956-2015). This result, in combination with the high rates of mineral accumulation measured throughout the Refuge, makes clear that there is not a marsh accretionary deficit related to insufficient mineral sediment. Moreover, the marsh soil record provides no evidence that the formation and expansion of marsh pools since the 1960s is related to low rates of marsh accretion or sediment supply. Additional research on historical changes in tidal inundation, marsh accretion, and elevation change is needed to better understand the nature of pool expansion and marsh loss at the Refuge.
Download or read book The Ecology of Tidal Marshes of the Pacific Northwest Coast written by Denise M. Seliskar and published by . This book was released on 1983 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The World of The Salt Marsh written by Charles Seabrook and published by University of Georgia Press. This book was released on 2013-05-01 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The World of the Salt Marsh is a wide-ranging exploration of the southeastern coast--its natural history, its people and their way of life, and the historic and ongoing threats to its ecological survival. Focusing on areas from Cape Hatteras, North Carolina, to Cape Canaveral, Florida, Charles Seabrook examines the ecological importance of the salt marsh, calling it "a biological factory without equal." Twice-daily tides carry in a supply of nutrients that nourish vast meadows of spartina ( Spartina alterniflora )--a crucial habitat for creatures ranging from tiny marine invertebrates to wading birds. The meadows provide vital nurseries for 80 percent of the seafood species, including oysters, crabs, shrimp, and a variety of finfish, and they are invaluable for storm protection, erosion prevention, and pollution filtration. Seabrook is also concerned with the plight of the people who make their living from the coast's bounty and who carry on its unique culture. Among them are Charlie Phillips, a fishmonger whose livelihood is threatened by development in McIntosh County, Georgia, and Vera Manigault of Mount Pleasant, South Carolina, a basket maker of Gullah-Geechee descent, who says that the sweetgrass needed to make her culturally significant wares is becoming scarcer. For all of the biodiversity and cultural history of the salt marshes, many still view them as vast wastelands to be drained, diked, or "improved" for development into highways and subdivisions. If people can better understand and appreciate these ecosystems, Seabrook contends, they are more likely to join the growing chorus of scientists, conservationists, fishermen, and coastal visitors and residents calling for protection of these truly amazing places.
Download or read book Ecology and Management of Tidal MarshesA Model from the Gulf of Mexico written by Charles L. Coultas and published by CRC Press. This book was released on 1997-03-07 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a major compendium of the existing knowledge of the ecology and management of tidal marshes by some of the leading experts in the field. The major theme of the book is the interconnectedness of the marsh, plants, marine organisms, soils and geology, energy and money flow, and legal and management effects on the system. Emphasis is placed throughout on the fact that nature has provided a free service that can either be maintained and enhanced by man or destroyed and forever lost. At a time of declining fisheries, this book points the way to management strategies that are needed to effect improvement.
