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Author: DAMES AND MOORE SAN FRANCISCO CALIF.
Publisher:
ISBN:
Category :
Languages : en
Pages : 331
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Book Description
Habitats of 15 inland confined dredged material disposal sites throughout the United States were studied along with present disposal techniques for dredged material. The purpose was to determine wildlife enhancement alternatives. The objective in identifying alternate dredged material disposal techniques was to enhance the present wildlife habitat of the disposal site, and yet be nonconflicting with the present wildlife setting. On the other hand, these alternates were not to unduly conflict with the present maintenance dredging techniques and equipment capabilities. Following review of the field data, one generalization can be made: the smaller the confined disposal area, the more rapidly ecological succession of the disposal site will occur. Succession depends on the size of the site and frequency and location of the deposition of the dredged material on the site. For example, the large disposal areas are repeatedly used and vegetation succession is arrested in an early state. Larger disposal sites also make colonizers more remote to the majority of the site. If larger areas are partitioned by diking, deposition in one of the smaller plots will not influence succession in adjacent confinements. Specific enhancement alternatives were developed for 5 of the 15 disposal sites. Environmental and economic costs and benefits of proposed alternate disposal techniques were categorized into short-term and long-term costs. Benefits were compared to the present costs. (Author).
Author: Dames & Moore
Publisher:
ISBN:
Category : Plant succession
Languages : en
Pages : 8
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Book Description
Author: DAMES AND MOORE SAN FRANCISCO CALIF.
Publisher:
ISBN:
Category :
Languages : en
Pages : 331
Get Book Here
Book Description
Habitats of 15 inland confined dredged material disposal sites throughout the United States were studied along with present disposal techniques for dredged material. The purpose was to determine wildlife enhancement alternatives. The objective in identifying alternate dredged material disposal techniques was to enhance the present wildlife habitat of the disposal site, and yet be nonconflicting with the present wildlife setting. On the other hand, these alternates were not to unduly conflict with the present maintenance dredging techniques and equipment capabilities. Following review of the field data, one generalization can be made: the smaller the confined disposal area, the more rapidly ecological succession of the disposal site will occur. Succession depends on the size of the site and frequency and location of the deposition of the dredged material on the site. For example, the large disposal areas are repeatedly used and vegetation succession is arrested in an early state. Larger disposal sites also make colonizers more remote to the majority of the site. If larger areas are partitioned by diking, deposition in one of the smaller plots will not influence succession in adjacent confinements. Specific enhancement alternatives were developed for 5 of the 15 disposal sites. Environmental and economic costs and benefits of proposed alternate disposal techniques were categorized into short-term and long-term costs. Benefits were compared to the present costs. (Author).
Author: Hanley K. Smith
Publisher:
ISBN:
Category : Artificial islands
Languages : en
Pages : 48
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Book Description
Habitat development using dredged material offers an alternative dredged material disposal method that is often feasible from biological, engineering, and economic standpoints. Careful use of this alternative could significantly increase the extent of wetland and wildlife resources in many parts of the United States. Four general habitats are suitable for establishment on dredged material: marsh, upland, island, and aquatic. Marsh establishment has received more attention than any other habitat development alternative, and techniques have been developed to enable careful planning, design, and propagation of these habitats. Terrestrial habitat development is primarily the application of established wildlife management and soil reclamation procedures at a particular disposal area. The feasibility of both the marsh and terrestrial habitat development alternatives has been documented in numerous field and laboratory studies. Island habitat development uses a standard technique to dispose of dredged material and create exceptionally important wildlife habitat. This is often a viable alternative that can be greatly improved by management techniques. The development of aquatic habitats, such as seagrass meadows and oyster flats, on dredged material appears to offer significant potential for the creation of highly productive biological communities and at the same time provide for large disposal quantities; however, aquatic habitat development is largely untested in the field.
Author: Kenneth O. Allen
Publisher:
ISBN:
Category : Dredges
Languages : en
Pages : 98
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 368
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Author:
Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 952
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Author: Mary Ellen Harris
Publisher:
ISBN:
Category : Dredging
Languages : en
Pages : 134
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Author: James Walter Morton
Publisher:
ISBN:
Category : Dredging
Languages : en
Pages : 44
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Book Description
The goal of this study was to prepare a comprehensive review of the literature on the physical, chemical, and biological effects of dredging and spoil disposal in estuaries and to identify alternative spoil disposal methods. Specific objectives were to identify the most critical problems relating to dredging and spoil disposal and to summarize the progress made to date in solving these problems. Using literature search facilities, bibliographies, and communications with experts throughout the United States, about 520 scientific and technical articles on dredging and spoil disposal were screened. Information extracted from selected articles is included in this review.
Author: Rosalie A. Schnick
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 742
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Book Description
Large river systems are valuable national resources that provide numerous benefits to travel, shipping, recreation, and fish and wildlife. However, efforts to expand one of the uses frequently come in direct conflict with one or more of the othersThis guide attempts to bring together all scientific data that are available on techniques that have been or can be used to offset or reduce the impacts of development and maintenance of Upper Mississippi River System or other large river systems. Decision makers are thus provided an objective descriptin of options now at their disposal when they attempt to weigh the merits of defects associated with a particular action.
Author: U.S. Army Engineer Waterways Experiment Station
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 624
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