Reducing negative ecological impacts of capture fisheries through gear modification
Capture fisheries provide the world with a healthy source of protein than can have minimal environmental impacts if harvested sustainably. Negative environmental impacts of capture fisheries include; overexploitation, modification of food webs, mortality of nontarget species, habitat alteration and...
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Memorial University of Newfoundland
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ftmemorialuniv:oai:research.library.mun.ca:11100 2023-10-01T03:55:36+02:00 Reducing negative ecological impacts of capture fisheries through gear modification Munden, Jenna G. 2013 application/pdf https://research.library.mun.ca/11100/ https://research.library.mun.ca/11100/1/Munden_JennaG.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/11100/1/Munden_JennaG.pdf Munden, Jenna G. <https://research.library.mun.ca/view/creator_az/Munden=3AJenna_G=2E=3A=3A.html> (2013) Reducing negative ecological impacts of capture fisheries through gear modification. Masters thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 2013 ftmemorialuniv 2023-09-03T06:48:10Z Capture fisheries provide the world with a healthy source of protein than can have minimal environmental impacts if harvested sustainably. Negative environmental impacts of capture fisheries include; overexploitation, modification of food webs, mortality of nontarget species, habitat alteration and biodiversity loss. A mitigation technique often used to reduce ecological impacts of fishing without compromising commercial catches is gear modification. This thesis explores modification of two gear types; shrimp trawl and turbot longline. Modifications were made to shrimp trawl footgear to reduce habitat alteration and to turbot longline gear to reduce Greenland shark bycatch. Testing of modified with traditional gears demonstrated that the modified gears with reduced ecological impacts did not negatively affect commercial catches. The 200 lb monofilament gangion is recommended for commercial testing by turbot longline fishers in Cumberland Sound; however the aligned shrimp trawl requires further modifications due to unexpected increases in turbot bycatch compared to the traditional trawl. Thesis Cumberland Sound Greenland Turbot Memorial University of Newfoundland: Research Repository Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Greenland |
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Memorial University of Newfoundland: Research Repository |
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ftmemorialuniv |
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English |
description |
Capture fisheries provide the world with a healthy source of protein than can have minimal environmental impacts if harvested sustainably. Negative environmental impacts of capture fisheries include; overexploitation, modification of food webs, mortality of nontarget species, habitat alteration and biodiversity loss. A mitigation technique often used to reduce ecological impacts of fishing without compromising commercial catches is gear modification. This thesis explores modification of two gear types; shrimp trawl and turbot longline. Modifications were made to shrimp trawl footgear to reduce habitat alteration and to turbot longline gear to reduce Greenland shark bycatch. Testing of modified with traditional gears demonstrated that the modified gears with reduced ecological impacts did not negatively affect commercial catches. The 200 lb monofilament gangion is recommended for commercial testing by turbot longline fishers in Cumberland Sound; however the aligned shrimp trawl requires further modifications due to unexpected increases in turbot bycatch compared to the traditional trawl. |
format |
Thesis |
author |
Munden, Jenna G. |
spellingShingle |
Munden, Jenna G. Reducing negative ecological impacts of capture fisheries through gear modification |
author_facet |
Munden, Jenna G. |
author_sort |
Munden, Jenna G. |
title |
Reducing negative ecological impacts of capture fisheries through gear modification |
title_short |
Reducing negative ecological impacts of capture fisheries through gear modification |
title_full |
Reducing negative ecological impacts of capture fisheries through gear modification |
title_fullStr |
Reducing negative ecological impacts of capture fisheries through gear modification |
title_full_unstemmed |
Reducing negative ecological impacts of capture fisheries through gear modification |
title_sort |
reducing negative ecological impacts of capture fisheries through gear modification |
publisher |
Memorial University of Newfoundland |
publishDate |
2013 |
url |
https://research.library.mun.ca/11100/ https://research.library.mun.ca/11100/1/Munden_JennaG.pdf |
long_lat |
ENVELOPE(-66.014,-66.014,65.334,65.334) |
geographic |
Cumberland Sound Greenland |
geographic_facet |
Cumberland Sound Greenland |
genre |
Cumberland Sound Greenland Turbot |
genre_facet |
Cumberland Sound Greenland Turbot |
op_relation |
https://research.library.mun.ca/11100/1/Munden_JennaG.pdf Munden, Jenna G. <https://research.library.mun.ca/view/creator_az/Munden=3AJenna_G=2E=3A=3A.html> (2013) Reducing negative ecological impacts of capture fisheries through gear modification. Masters thesis, Memorial University of Newfoundland. |
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thesis_license |
_version_ |
1778524177729323008 |