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Nitrogen Phosphorus And Carbon Flux In Chesapeake Bay Marshes
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Book Synopsis Nitrogen, Phosphorus, and Carbon Flux in Chesapeake Bay Marshes by : Donald M. Axelrad
Download or read book Nitrogen, Phosphorus, and Carbon Flux in Chesapeake Bay Marshes written by Donald M. Axelrad and published by . This book was released on 1976 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annual nitrogen, phosphorus and carbon budgets for two Virginia salt marshes were determined by monthly measurements of water discharge and constituent concentrations over tidal cycles. Considering all three forms of phosphorus measured (total, dissolved organic and orthophosphate) there was a net loss from the estuary to the marches. The data reveal a loss of particulate phosphorus of estuarine origin to marsh sediments and mineralization of this phosphorus in the marshes with subsequent export of dissolved inorganic and organic phosphorus back to the estuary. Nitrogen flux data show a loss of nitrate and nitrite to the marshes. Particulate nitrogen is imported to the marshes where it is mineralized and returned to the estuary as ammonia and dissolved organic nitrogen. The magnitude of nitrogen export suggests significant fixation of atmospheric nitrogen by marsh flora with subsequent export as dissolved species. Carbon flux data show significant contributions of both particulate and dissolved organic carbon to the estuary from the marshes. Estimates of export, based on marsh grass productivity, suggest a loss of 36 and 49 percent of a year's primary production on the marshes as detritus for Ware and Carter Creeks respectively.
Book Synopsis Chesapeake Bay Environmental Data Directory by : Dan Jacobs
Download or read book Chesapeake Bay Environmental Data Directory written by Dan Jacobs and published by . This book was released on 1987 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Ecology of Tidal Freshwater Marshes of the United States East Coast by : William E. Odum
Download or read book The Ecology of Tidal Freshwater Marshes of the United States East Coast written by William E. Odum and published by . This book was released on 1984 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is part of a series of community profiles produced by the Fish and Wildlife Service to provide up-to-date information on coastal ecological communities of the tidal freshwater marsh community along the Atlantic coast from southern New England to northern Florida. Tidal freshwater marshes occupy the uppermost portion of the estuary between the oligohaline or low salinity zone and nontidal freshwater wetlands. By combining the physical process of tidal flushing with the biota of the freshwater marsh, a dynamic, diverse, and distinct estuarine community has been created. The profile covers all structural and functional aspects of the community: its geology, hydrology, biotic components, and energy, nutrient and biomass cycling.
Book Synopsis Ecosystem Models of Chesapeake Bay, 1994-1996 by :
Download or read book Ecosystem Models of Chesapeake Bay, 1994-1996 written by and published by . This book was released on 1997 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen in the Marine Environment by : Douglas G. Capone
Download or read book Nitrogen in the Marine Environment written by Douglas G. Capone and published by Elsevier. This book was released on 2008-08-15 with total page 1759 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first edition of Nitrogen in the Environment published in 1983, it has been recognized as the standard in the field. In the time since the book first appeared, there has been tremendous growth in the field with unprecedented discoveries over the past decade that have fundamentally changed the view of the marine nitrogen cycle. As a result, this Second Edition contains twice the amount of information as contained in the first edition. This updated edition is now available online, offering searchability and instant, multi-user access to this important information. *The classic text, fully updated to reflect the rapid pace of discovery*Provides researchers and students in oceanography, chemistry, and marine ecology an understanding of the marine nitrogen cycle*Available online with easy access and search - the information you need, when you need it
Book Synopsis The Ecology of a Salt Marsh by : L. R. Pomeroy
Download or read book The Ecology of a Salt Marsh written by L. R. Pomeroy and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecologists have two long-standing ways to study large ecosystems such as lakes, forests, and salt-marsh estuaries. In the first, which G. E. Hutchinson has called the holological approach, the whole ecosystem is first studied as a "black box," and its components are investigated as needed. In the second, which Hutchinson has called the merological approach, the parts of the system are studied first, and an attempt is then made to build up the whole from them. For long-term studies, the holological approach has special advantages, since the general patterns and tentative hypotheses that are first worked out help direct attention to the components of the system which need to be studied in greater detail. In this approach, teams of investigators focus on major func tions and hypotheses and thereby coordinate their independent study efforts. Thus, although there have been waves, as it were, of investigators and graduate students working on different aspects of the Georgia salt-marsh estuaries (personnel at the Marine Institute on Sapelo Island changes every few years), the emphasis on the holo logical approach has resulted in a highly differentiated and well-coordinated long-term study. Very briefly, the history of the salt-marsh studies can be outlined as follows. First, the general patterns of food chains and other energy flows in the marshes and creeks were worked out, and the nature of imports and exports to and from the system and its subsystems were delimited.
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estuarine and Wetland Processes by : Keith B. Ater
Download or read book Estuarine and Wetland Processes written by Keith B. Ater and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estuaries and Wetlands are important coastal resources which are subject to a great deal of environmental stress. Dredging, construction, creation of intertidal wetlands, regulation of fresh water flow, and pollution are just a few of the activities which affect these coastal systems. The need to predict the effects of these perturbations upon ecosystem dynamics, particularly estuarine fisheries, as well as on physical effects, such as sedimentation and salt intrusion, is of paramount importance. Prediction requires the use of models, but no model is likely to be satisfactory unless fundamental physical, chemical, sedimentological, and biological processes are quantitatively understood, and the appropriate time and space scales known. With these considerations in mind, the Environmental Laboratory, U. S. Army Engineer Haterways Experiment Station,* Vicksburg, Mississippi, sponsored a workshop on "Estuarine and Wetland Processes and Water Quality Modeling" held in New Orleans, June 1979. The contents of this volume have been selected from the workshop papers. The resulting book, perhaps more than any other symposium proceed ings on estuaries and wetlands, attempts to review important pro cesses and place them in a modeling context. There is also a distinct applied tinge to a number of the contributions since some of the research studies were motivated by environmental assessments. The difference in title between this volume and the workshop re flects more accurately the contents of the published papers.
Book Synopsis Estuaries and Nutrients by : Bruce J. Neilson
Download or read book Estuaries and Nutrients written by Bruce J. Neilson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estuaries are eternally enriched. Their positions at the foot of watersheds and their convenience as receiving bodies for the wastes of cites, towns and farms results in continuous addition of nutrients - those elements and compounds which are essential for organic production. Such materials must be added to these complex bodies of water to sustain production, since there is a net loss of water and its contents to the oceans. Enrichment from land and the ocean and the subsequent cycling of the original chemicals or their derivatives contribute to the extraordinarily high values of estuaries for human purposes. Many estuaries are able to assimilate large quantities of nutrients despite the great fluctuations which occur with variations in the flow from tributaries. The nutrients can be stored, incorporated in standing crops of plants, released, cycled and exported - and the system frequently achieves high production of plants and and animals without creation of any undesirable results of enrichment. Excessive enrichment with the same elements and compounds can, however, be highly detrimental to estuaries and their uses. Coastal cities are usually located on the estuaries which provided a harbor for the- and which now receive partially treated sewage and other wastes from the expanding population and industrial activity. Conversion of woodlands to agricultural use and the extensive application of fertilizers have resulted in the flow of large quantities of nutrients down the hill or slopes and eventually into the estuary.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1976 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecological Characterization of the Sea Island Coastal Region of South Carolina and Georgia by :
Download or read book Ecological Characterization of the Sea Island Coastal Region of South Carolina and Georgia written by and published by . This book was released on 1980 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estuarine Perspectives by : Victor S Kennedy
Download or read book Estuarine Perspectives written by Victor S Kennedy and published by Elsevier. This book was released on 2013-10-02 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estuarine Perspectives presents most of the invited papers presented at the Fifth Biennial International Research Conference on Estuarine Research. The book includes information on one tropical and two Arctic estuaries; contemporary techniques as applied to estuarine research; and some hypotheses of estuarine ecology. The text also describes value and management of wetlands as well as the chemical cycles and fluxes. The primary production and photosynthesis; the physical and biological factors of estuarine sediment; and the ecosystem dynamics are also encompassed.
Book Synopsis Estuarine Interactions by : Martin L. Wiley
Download or read book Estuarine Interactions written by Martin L. Wiley and published by Elsevier. This book was released on 2013-10-22 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estuarine Interactions is a compilation of papers presented at the Fourth International Estuarine Research Federation Conference, held at the Mount Airy Lodge, Mount Pocono, Pennsylvania in October 1977. The compendium consists of scientific investigations on the structure and functioning of estuaries and adjacent environments. This volume includes the written form of the invited papers that were part of eight sessions. Papers presented deal with topics on estuarine management needs, impacts of coastal engineered systems, and productivity and initial photosynthate dispersion in the ecosystem. Natural catastrophic events in the estuarine environment, the impact of possible climatic changes on estuarine ecosystems, and pollutant cycling and water quality are likewise discussed. Estuarine scientists will find the book invaluable.
Download or read book FWS/OBS. written by and published by . This book was released on 1980 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Great Basin/desert and Montane Regional Wetland Functions by : J. Henry Sather
Download or read book Great Basin/desert and Montane Regional Wetland Functions written by J. Henry Sather and published by . This book was released on 1990 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contributions to the ecology of halophytes by : David N. Sen
Download or read book Contributions to the ecology of halophytes written by David N. Sen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ecology of halophytes has a wide scope of interest, appealing to people of many disciplines. It covers widely different fields such as climatology, soil science, phytogeography, adaptive biology and agriculture. Ecologists study these specialized plants in relation to estuarine ecosystems, biology of dominant genera, germination ecology, water relations, salt secretion, and senescence. The present volume is divided into three parts and attempts to elucidate new aspects of the problems faced by this special group of plants. It tries to give the reader an overall view of saline environments and the ecology of plants found therein. In the first chapter of part one Zahran presents the halophytic vegetation of Egypt, which includes the inland and the littoral (Red Sea and Mediterranean Sea) salt marshes. The plants he describes have been classified as succulents, excretives and cumulatives, according to their adaptability to saline soils and according to their different life-forms. The second chapter throws light on the estuarine ecosystem ofIndia. The estuaries are described by Joshi, and Bhosale as being rich in diversity of mangrove species. Making varied use of estuarine ecosystems is not only possible, but also essential because they are the meeting point between terrestrial and marine life.
Book Synopsis Research Reports Supported by Office of Water Research and Technology Received During the Period ... by :
Download or read book Research Reports Supported by Office of Water Research and Technology Received During the Period ... written by and published by . This book was released on 1975 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
