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At present, Greenland halibut in the ICES subares I and II is caught by three types of fishing gears: trawls, longlines and gillnets. This study helps to understand and estimate differences in catches using these different types of fishing gears, as well as the influence of these fisheries on the ex...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.581.4790 2023-05-15T16:26:52+02:00 Supervisor Alexander Pavlenko Haraldur Einarsson The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.581.4790 http://www.unuftp.is/static/fellows/document/alex05prf.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.581.4790 http://www.unuftp.is/static/fellows/document/alex05prf.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.unuftp.is/static/fellows/document/alex05prf.pdf Greenland halibut selectivity trawl longline gillnet distribution mean length depth catch discard. Pavlenki text ftciteseerx 2016-01-08T13:02:40Z At present, Greenland halibut in the ICES subares I and II is caught by three types of fishing gears: trawls, longlines and gillnets. This study helps to understand and estimate differences in catches using these different types of fishing gears, as well as the influence of these fisheries on the exploited stock. The material for this investigation is fishing data on the Greenland halibut which was collected by the Marine Research Institute of Iceland during the period 1970-2005. Selectivity parameters of trawl and longline are accepted from previous experimental work. Selectivity parameters for gillnet are estimated from data from the Marine Research Institute of Iceland. This study estimates the difference in mean length and sex composition for catches from trawls, longlines and gillnets. The mean length (62.5 ± 1.55) and female share (0.58 ± 0.04) of the annual catches from trawls are less than the mean lengths and female shares from gillnet and longline catches. The selectivity patterns, the length distributions of stock and the annual catches are used to estimate discard from various fishing gears. Discards from the trawl and gillnet fisheries are similar to or less than those from longline. It was determined that there was a Text Greenland Iceland Unknown Greenland |
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Greenland halibut selectivity trawl longline gillnet distribution mean length depth catch discard. Pavlenki |
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Greenland halibut selectivity trawl longline gillnet distribution mean length depth catch discard. Pavlenki Alexander Pavlenko Haraldur Einarsson Supervisor |
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Greenland halibut selectivity trawl longline gillnet distribution mean length depth catch discard. Pavlenki |
description |
At present, Greenland halibut in the ICES subares I and II is caught by three types of fishing gears: trawls, longlines and gillnets. This study helps to understand and estimate differences in catches using these different types of fishing gears, as well as the influence of these fisheries on the exploited stock. The material for this investigation is fishing data on the Greenland halibut which was collected by the Marine Research Institute of Iceland during the period 1970-2005. Selectivity parameters of trawl and longline are accepted from previous experimental work. Selectivity parameters for gillnet are estimated from data from the Marine Research Institute of Iceland. This study estimates the difference in mean length and sex composition for catches from trawls, longlines and gillnets. The mean length (62.5 ± 1.55) and female share (0.58 ± 0.04) of the annual catches from trawls are less than the mean lengths and female shares from gillnet and longline catches. The selectivity patterns, the length distributions of stock and the annual catches are used to estimate discard from various fishing gears. Discards from the trawl and gillnet fisheries are similar to or less than those from longline. It was determined that there was a |
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The Pennsylvania State University CiteSeerX Archives |
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Text |
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Alexander Pavlenko Haraldur Einarsson |
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Alexander Pavlenko Haraldur Einarsson |
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Alexander Pavlenko |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.581.4790 http://www.unuftp.is/static/fellows/document/alex05prf.pdf |
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Greenland Iceland |
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http://www.unuftp.is/static/fellows/document/alex05prf.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.581.4790 http://www.unuftp.is/static/fellows/document/alex05prf.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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