Document Detail


The mobilisation of sediment by demersal otter trawls.
MedLine Citation:
PMID:  21345459     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The mobilisation of sediment by towed demersal fishing gears has been related to the release of nutrients, benthic infaunal mortality and the resuspension of phytoplankton cysts and copepod eggs. Hence, to understand the broader environmental and ecological implications of demersal fishing, it is important to be able to estimate accurately the amount of sediment put into the water column by towed gears. Experimental trials were carried out in the Moray Firth, Scotland, to measure the quantity of sediment remobilised by trawl gear components. It is demonstrated, for a given sediment type, that there is a relationship between the hydrodynamic drag of the gear element and the mass of sediment entrained behind it. A better understanding of this relationship and the hydrodynamic processes involved will lead to the development of accurate predictive models and aid the design of fishing gears of reduced impact.
Authors:
F G O'Neill; K Summerbell
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-21
Journal Detail:
Title:  Marine pollution bulletin     Volume:  -     ISSN:  1879-3363     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0260231     Medline TA:  Mar Pollut Bull     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Crown Copyright © 2011. Published by Elsevier Ltd. All rights reserved.
Affiliation:
Marine Scotland - Science, 375 Victoria Road, Aberdeen, AB11 9DB Scotland, United Kingdom.
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