Maine Salt Marshes and Sediment Accumulation PDF Download

Author: Mark E. Wood
Publisher:
ISBN:
Category : Salt marshes
Languages : en
Pages :

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Author: Michèle Dionne
Publisher:
ISBN:
Category : Salt marsh ecology
Languages : en
Pages : 24

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Book Description
Provides an overview of: the ecological, commercial and recreational functions of Maine's salt marshes; six salt marsh plant species; sources of salt marsh degradation; and, suggestions for restoration of tidal flow in salt marshes.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 30

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A 3.1 meter sediment core was analyzed for stable carbon isotope composition of organic matter and higher plant leaf wax (HPLW) lipid biomarkers to determine Holocene shifts in C3 (higher high marsh) and C4 (low and/or high marsh) plant deposition at the Sprague River Salt Marsh, Phippsburg, Maine. The carbon isotope composition of the bulk sediment and the HPLW parallel each other throughout most of the core, suggesting that terrestrial plants are an important source of organic matter to the sediments, and diagenetic alteration of the bulk sediments is minimal. The current salt marsh began to form 2500 cal yr BP. Low and/or high C4 marsh plants dominated deposition at 2000 cal yr BP, 700 cal yr BP, and for the last 200 cal yr BP. Expansion of higher high marsh C3 plants occurred at 1300 and 600 cal yr BP. These major vegetation shifts result from a combination of changes in relative sea-level rise and sediment accumulation rates. Average annual carbon sequestration rates for the last 2500 years approximate 40 g C yr−1 m−2, and are in strong agreement with other values published for the Gulf of Maine. Given that Maine salt marshes cover an area of (almost equal to)79 km2, they represent an important component of the terrestrial carbon sink. More detailed isotopic and age records from a network of sediment cores at Sprague Marsh are needed to truly evaluate the long term changes in salt marsh plant communities and the impact of more recent human activity, including global warming, on salt marsh vegetation.

Author: Scott W. Nixon
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 88

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Author: William Walton Woodhouse (Jr.)
Publisher:
ISBN:
Category : Marsh ecology
Languages : en
Pages : 100

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Book Description
This is the first comprehensive report on coastal marsh creation in the United States. It provides potential users with an analysis and interpretation of the available information on this subject. The role of marshes, the feasibility of marsh creation, and the effects of elevation, salinity, slope, exposure, and soils on marsh establishment are discussed. Plants suitable for marsh building are described by the major regions. Plant propagation, planting, fertilization, and management of the major plants are discussed. Labor and material requirements for marsh creation are summarized. Keywords: Coastal engineering; Gulf coast; Planting; East Coast; West Coast; Grasses; Wetland plants; Transplantation; Sediment accumulation; Marsh soils; Florida; Marsh building; Marsh vegetation; Stabilization. (EDC)

Author: Duncan M. FitzGerald
Publisher: Cambridge University Press
ISBN: 1107186285
Category : Nature
Languages : en
Pages : 499

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Book Description
A multidisciplinary review of salt marshes, describing how they function and respond to external pressures such as sea-level rise.

Author: L. R. Pomeroy
Publisher: Springer Science & Business Media
ISBN: 1461258936
Category : Science
Languages : en
Pages : 277

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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.

Author: R. Scott Anderson
Publisher:
ISBN:
Category : Sea level
Languages : en
Pages : 22

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Author: Gulf of Maine Council on the Marine Environment
Publisher:
ISBN: 9780979154010
Category : Habitat conservation
Languages : en
Pages : 42

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Book Description

Author: Michael J. Kennish
Publisher: Springer
ISBN: 9789401788007
Category : Science
Languages : en
Pages : 790

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Book Description
The Encyclopedia of Estuaries, part of Springer's Encyclopedia of Earth Sciences Series, provides a single, state-of-the-art, comprehensive reference volume on estuaries for research scientists, educators, students, and others. Consisting of almost 270 subject entries in an easy-to-use format, this volume covers the physical, chemical, and biological characteristics of estuaries. In total more than 225 authors from around the world have contributed to the encyclopedia on such diverse subjects as biotic communities, essential habitats, food webs, fisheries, hydrology, pollution, conservation, and many more. The Encyclopedia of Estuaries will meet the needs of professionals worldwide by supplying detailed information from world-class estuarine and marine scientists as well as experts from other fields of study.