Environmental Effects of Dredging. Chronic Sublethal Sediment Bioassays for the Regulatory Evaluation of Marine and Estuarine Dredged Material: Proceedings of a Workshop PDF Download
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Languages : en
Pages : 14
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This note summarizes the proceedings of a workshop held April 3-5,1990, at the US Army Engineer Waterways Experiment Station, Vicksburg, MS. The purpose of the workshop was to solicit input from technical experts regarding techniques for evaluating the chronic sublethal effects of sediments on aquatic biota. This input will be used to help direct subsequent research and development by the US Army Corps of Engineers.-BKA.
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Category :
Languages : en
Pages : 14
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Book Description
This note summarizes the proceedings of a workshop held April 3-5,1990, at the US Army Engineer Waterways Experiment Station, Vicksburg, MS. The purpose of the workshop was to solicit input from technical experts regarding techniques for evaluating the chronic sublethal effects of sediments on aquatic biota. This input will be used to help direct subsequent research and development by the US Army Corps of Engineers.-BKA.
Author: Tom M. Dillon
Publisher:
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Category :
Languages : en
Pages :
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Author: Edward E. Little
Publisher: ASTM International
ISBN: 0803124791
Category : Environmental health
Languages : en
Pages : 426
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Author:
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ISBN:
Category : Dredging
Languages : en
Pages : 122
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Author:
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Category :
Languages : en
Pages : 14
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This note provides a general overview of a new 28-day chronic sublethal sediment bioassay designed for the regulatory evaluation of dredged material. The bioassay uses survival and growth rate endpoints with the polychaete Nereis (Neanthes) arenaceodentata. The primary technical reference for this new bioassay is Dillon, Moore, and Reish (in press), upon which this overview is based. Sediment bioassays are used to assess the aggregate toxicity of sediment associated anthropogenic chemicals. Historically, these bioassays have measured survival of highly sensitive species following acute exposures (10 days). A new generation of sediment bioassays is being developed in which the subtle, sublethal response of test species is measured following chronic sediment exposures (Dillon 1993). pg1. JMD.
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Category :
Languages : en
Pages : 11
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This technical note provides a brief introduction to population modeling and describes the application and utility of such techniques for dredged material bioassays. The use of population modeling as a source of interpretive guidance for chronic sublethal dredged material bioassays is emphasized. Current laws and regulations governing the discharge of dredged material stress the importance of assessing the chronic (long-term) sublethal effects of dredging operations. Regulations implementing section 103 of the Marine Protection, Research and Sanctuaries Act (PL 92-532) state that, "Materials shall be deemed environmentally acceptable for ocean dumping only when ... no significant undesirable effects will occur due either to chronic toxicity or to bioaccumulation ... Similar language is used in regulations implementing section 404(b)(1) of the Clean Water Act (FL 92-500) which reads: 'The permit- ting authority shall determine in writing the potential short-term or long-term effects of a proposed discharge of dredged or fill material on the physical, chemical, and biological components of the aquatic environment ... It also stipulates that tests "may be required to provide information on the effect of the discharge material on communities or populations of organisms.'
Author:
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ISBN:
Category : Science
Languages : en
Pages : 808
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Author:
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Category : Amphipoda
Languages : en
Pages : 158
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Author: David Warren Moore
Publisher:
ISBN:
Category : Nereis
Languages : en
Pages : 64
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Author: Thomas M. Dillon
Publisher:
ISBN:
Category : Biological assay
Languages : en
Pages : 38
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