Author: Robert H. DanoPublisher:
ISBN:
Category : Salt marsh ecology
Languages : en
Pages : 58
Book Description
An Ecological Study of the Black's Creek Estuary and Marsh
Author: Robert H. DanoPublisher:
ISBN:
Category : Salt marsh ecology
Languages : en
Pages : 58
Book Description
Concepts and Controversies in Tidal Marsh Ecology
Author: M.P. WeinsteinPublisher: Springer Science & Business Media
ISBN: 0792360192
Category : Nature
Languages : en
Pages : 862
Book Description
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.
The Dynamics of an Estuary as a Natural Ecosystem
Author: F. John VernbergPublisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 98
Book Description
Selected Water Resources Abstracts
Author: The Ecology of a Salt Marsh
Author: L. R. PomeroyPublisher: Springer
ISBN:
Category : Nature
Languages : en
Pages : 298
Book Description
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.
The Ecology of Old Woman Creek, Ohio
Author: Charles E. HerdendorfPublisher:
ISBN: 9780966803495
Category : Estuaries
Languages : en
Pages : 448
Book Description
A comprehensive ecological study of a Lake Eric estuary and its watershed, including chapters on geology, soils, climatology, hydrolesy, biology, ecology, archaeology, history, and land use. This book serves as a site profile of the only Nation a Estuarine Research Reserve in the Great Lakes Resion. Over 200 color illustrations.
Coastal Marshes
Author: R. H. ChabreckPublisher: U of Minnesota Press
ISBN: 0816616639
Category : Science
Languages : en
Pages : 170
Book Description
Coastal Marshes was first published in 1988. Minnesota Archive Editions uses digital technology to make long-unavailable books once again accessible, and are published unaltered from the original University of Minnesota Press editions. The coastal regions of the United States form a highly diversified environment. In addition to sandy beaches and rocky shorelines, there are lagoons, rivers, estuaries, and marshes. The last are a dominant features of many coastal areas and serve as a transition between sea and uplands. Coastal marshes have been a zone for human development, attractive to industrial and residential building because they provide water frontage. But the public is becoming aware of the great value of these wetlands to fisheries and wildlife and to the local economy that depends on them. This book describes coastal marshes in terms of form, function, ecology, wildlife value, and management. Robert H. Chabreck's emphasis is on the marshes of the northern coast of the Gulf of Mexico (there are 5,500 square miles of marshland in Louisiana alone), but he also deals with marshes on the Atlantic and Pacific coasts. Plant and animal communities are each given a chapter, and the book concludes with considerations of future uses and needs. The author provides references, a glossary, and a list of scientific names, along with numerous illustrations, including a section of color photographs. For thirty years, Robert H. Chabreck has been engaged in research and management of coastal marshes and has often served as a consultant in wetland ecology. He is a professor of wildlife at Louisiana State University.
Wetland Ecology and Management: Case Studies
Author: Dennis F. WhighamPublisher: Springer Science & Business Media
ISBN: 9400921152
Category : Science
Languages : en
Pages : 178
Book Description
This book contains papers on the topics of brought together wetland SCientists from all wetland ecology and management, most of continents and provided an opportunity to exchange valuable information on a variety of which were presented at the 2nd International Wetlands Conference in Trebon, Czechoslovakia aspects on the ecology and management of wetlands. (13-22 June 1984). The conference, hosted by the Hydrobotany Department of the Institute of Botany, was organized by the Czechoslovak This volume contains papers that represent aspects of wetland management. Like most Academy of Sciences and the International ecological topics, the papers clearly Wetlands Working Group of the International Association of Ecology (INTECOL) with demonstrate that the science of wetland management is not evenly developed around the cooperation from the SCOPE (SCientific Committee on Problems of the Environment) world. In some areas, wetlands have not even Working Group on Ecosystem Dynamics in been adequately described and there is little Freshwater Wetlands and Shallow Water Bodies, information about the impacts that man is UNESCO Man and the Biosphere (MAB) having on them. In other areas, information on Program, International Society for Ecological wetland ecology and management has developed Modelling, and the International Society for to the point where regulations and laws provide Limnology (SIL). Partial sponsorship for the some protection against development. It is our conference and these proceedings was provided hope this collection of papers will demonstrate by UNESCO (Contract SCjRPj204. 079.
An Ecological Study of the Cross River Estuary
Author: Ikwen Gregory NawaCoastal Marsh Productivity
Author: Jacques D. BagurPublisher:
ISBN:
Category : Biological productivity
Languages : en
Pages : 326
Book Description