MDNR-NOAA trawl standardization study
Long-term living resource monitoring programs are commonly conducted globally to evaluate trends and impacts of environmental change and management actions. For example, the Woods Hole bottom trawl survey has been conducted since 1963 providing critical information on the biology and distribution of...
Main Authors: | , , , |
---|---|
Format: | Book |
Language: | English |
Published: |
NOAA/National Centers for Coastal Ocean Science
2011
|
Subjects: | |
Online Access: | http://hdl.handle.net/1834/30646 |
id |
ftoceandocs:oai:aquadocs.org:1834/30646 |
---|---|
record_format |
openpolar |
spelling |
ftoceandocs:oai:aquadocs.org:1834/30646 2023-05-15T17:36:13+02:00 MDNR-NOAA trawl standardization study Councilman, James Walstrum, Chris Rhodes, Matt Jacobs, John 2011 application/pdf 17 http://hdl.handle.net/1834/30646 en eng NOAA/National Centers for Coastal Ocean Science Oxford, MD NOAA Technical Memorandum NOS NCCOS http://docs.lib.noaa.gov/noaa_documents/NOS/NCCOS/TM_NOS_NCCOS/nos_nccos_126.pdf http://hdl.handle.net/1834/30646 John.Jacobs@noaa.gov http://aquaticcommons.org/id/eprint/14757 403 2014-02-27 01:16:41 14757 United States National Ocean Service Fisheries Management monograph 2011 ftoceandocs 2023-04-06T17:04:14Z Long-term living resource monitoring programs are commonly conducted globally to evaluate trends and impacts of environmental change and management actions. For example, the Woods Hole bottom trawl survey has been conducted since 1963 providing critical information on the biology and distribution of finfish and shellfish in the North Atlantic (Despres-Patango et al. 1988). Similarly in the Chesapeake Bay, the Maryland Department of Natural Resources (MDNR) Summer Blue Crab Trawl survey has been conducted continuously since 1977 providing management-relevant information on the abundance of this important commercial and recreational species. A key component of monitoring program design is standardization of methods over time to allow for a continuous, unbiased data set. However, complete standardization is not always possible where multiple vessels, captains, and crews are required to cover large geographic areas (Tyson et al. 2006). Of equal issue is technological advancement of gear which serves to increase capture efficiency or ease of use. Thus, to maintain consistency and facilitate interpretation of reported data in long-term datasets, it is imperative to understand and quantify the impacts of changes in gear and vessels on catch per unit of effort (CPUE).While vessel changes are inevitable due to ageing fleets and other factors, gear changes often reflect a decision to exploit technological advances. A prime example of this is the otter trawl, a common tool for fisheries monitoring and research worldwide. Historically, trawl nets were constructed of natural materials such as cotton and linen. However modern net construction consists of synthetic materials such as polyamide, polyester, polyethylene, and polypropylene (Nielson et. al. 1983). Over the past several decades, polyamide materials which will be referred to as nylon, has been a standard material used in otter trawl construction. These trawls are typically dipped into a latex coating for increased abrasion resistance, a process that is referred to as ... Book North Atlantic IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Fisheries Management |
spellingShingle |
Fisheries Management Councilman, James Walstrum, Chris Rhodes, Matt Jacobs, John MDNR-NOAA trawl standardization study |
topic_facet |
Fisheries Management |
description |
Long-term living resource monitoring programs are commonly conducted globally to evaluate trends and impacts of environmental change and management actions. For example, the Woods Hole bottom trawl survey has been conducted since 1963 providing critical information on the biology and distribution of finfish and shellfish in the North Atlantic (Despres-Patango et al. 1988). Similarly in the Chesapeake Bay, the Maryland Department of Natural Resources (MDNR) Summer Blue Crab Trawl survey has been conducted continuously since 1977 providing management-relevant information on the abundance of this important commercial and recreational species. A key component of monitoring program design is standardization of methods over time to allow for a continuous, unbiased data set. However, complete standardization is not always possible where multiple vessels, captains, and crews are required to cover large geographic areas (Tyson et al. 2006). Of equal issue is technological advancement of gear which serves to increase capture efficiency or ease of use. Thus, to maintain consistency and facilitate interpretation of reported data in long-term datasets, it is imperative to understand and quantify the impacts of changes in gear and vessels on catch per unit of effort (CPUE).While vessel changes are inevitable due to ageing fleets and other factors, gear changes often reflect a decision to exploit technological advances. A prime example of this is the otter trawl, a common tool for fisheries monitoring and research worldwide. Historically, trawl nets were constructed of natural materials such as cotton and linen. However modern net construction consists of synthetic materials such as polyamide, polyester, polyethylene, and polypropylene (Nielson et. al. 1983). Over the past several decades, polyamide materials which will be referred to as nylon, has been a standard material used in otter trawl construction. These trawls are typically dipped into a latex coating for increased abrasion resistance, a process that is referred to as ... |
format |
Book |
author |
Councilman, James Walstrum, Chris Rhodes, Matt Jacobs, John |
author_facet |
Councilman, James Walstrum, Chris Rhodes, Matt Jacobs, John |
author_sort |
Councilman, James |
title |
MDNR-NOAA trawl standardization study |
title_short |
MDNR-NOAA trawl standardization study |
title_full |
MDNR-NOAA trawl standardization study |
title_fullStr |
MDNR-NOAA trawl standardization study |
title_full_unstemmed |
MDNR-NOAA trawl standardization study |
title_sort |
mdnr-noaa trawl standardization study |
publisher |
NOAA/National Centers for Coastal Ocean Science |
publishDate |
2011 |
url |
http://hdl.handle.net/1834/30646 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
John.Jacobs@noaa.gov http://aquaticcommons.org/id/eprint/14757 403 2014-02-27 01:16:41 14757 United States National Ocean Service |
op_relation |
NOAA Technical Memorandum NOS NCCOS http://docs.lib.noaa.gov/noaa_documents/NOS/NCCOS/TM_NOS_NCCOS/nos_nccos_126.pdf http://hdl.handle.net/1834/30646 |
_version_ |
1766135629621493760 |