Monitoring discards in Mediterranean and Black Sea fisheries: methodology for data collection
Discards – the part of the catch that is not retained on board, which may include target species or any other (commercial and non-commercial) species that are returned at sea dead or alive – usually result in a reduction of harvesting opportunities and may have negative consequences on the stocks, ecosystems and the marine environment. In the Mediterranean and the Black Sea, studies on discards only cover a small portion of the total fishing activities and discard rates are often poorly estimated or totally unknown. Information is lacking for many types of fishing gear, countries and GFCM subregions, and most available studies only cover relatively short periods and small areas. Discards therefore represent a major source of uncertainty about the actual fishing mortality rates of stocks. These knowledge gaps highlight the need to expand discard monitoring programmes and standardize practices, so to assess discards appropriately and address their important impacts. This publication and the methodology discussed herein aim to provide a framework for the development and implementation of an efficient, standardized data collection and monitoring system for discards through on-board observations, questionnaires at landing sites and self-sampling activities. It ensures minimum common standards for the collection of discards data and allows for repeatability and comparisons among fisheries across the region, thus offering a harmonized basis of knowledge, information and evidence for decision-making.
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Format: | Texto biblioteca |
Language: | eng |
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Rome (Italy) FAO
2019
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Subjects: | marine fisheries, fishing operations, catch composition, species, sampling, ecosystem conservation, data collection, monitoring techniques, |
Online Access: | http://www.fao.org/3/ca4914en/CA4914EN.pdf |
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unfao:8532472021-05-05T06:52:06ZMonitoring discards in Mediterranean and Black Sea fisheries: methodology for data collection 1423211779386 Carpentieri, P. 185034 FAO, Rome (Italy). Fisheries and Aquaculture Dept. eng 188247 FAO, Rome (Italy). General Fisheries Commission for the Mediterranean eng textRome (Italy) FAO2019engDiscards – the part of the catch that is not retained on board, which may include target species or any other (commercial and non-commercial) species that are returned at sea dead or alive – usually result in a reduction of harvesting opportunities and may have negative consequences on the stocks, ecosystems and the marine environment. In the Mediterranean and the Black Sea, studies on discards only cover a small portion of the total fishing activities and discard rates are often poorly estimated or totally unknown. Information is lacking for many types of fishing gear, countries and GFCM subregions, and most available studies only cover relatively short periods and small areas. Discards therefore represent a major source of uncertainty about the actual fishing mortality rates of stocks. These knowledge gaps highlight the need to expand discard monitoring programmes and standardize practices, so to assess discards appropriately and address their important impacts. This publication and the methodology discussed herein aim to provide a framework for the development and implementation of an efficient, standardized data collection and monitoring system for discards through on-board observations, questionnaires at landing sites and self-sampling activities. It ensures minimum common standards for the collection of discards data and allows for repeatability and comparisons among fisheries across the region, thus offering a harmonized basis of knowledge, information and evidence for decision-making. Discards – the part of the catch that is not retained on board, which may include target species or any other (commercial and non-commercial) species that are returned at sea dead or alive – usually result in a reduction of harvesting opportunities and may have negative consequences on the stocks, ecosystems and the marine environment. In the Mediterranean and the Black Sea, studies on discards only cover a small portion of the total fishing activities and discard rates are often poorly estimated or totally unknown. Information is lacking for many types of fishing gear, countries and GFCM subregions, and most available studies only cover relatively short periods and small areas. Discards therefore represent a major source of uncertainty about the actual fishing mortality rates of stocks. These knowledge gaps highlight the need to expand discard monitoring programmes and standardize practices, so to assess discards appropriately and address their important impacts. This publication and the methodology discussed herein aim to provide a framework for the development and implementation of an efficient, standardized data collection and monitoring system for discards through on-board observations, questionnaires at landing sites and self-sampling activities. It ensures minimum common standards for the collection of discards data and allows for repeatability and comparisons among fisheries across the region, thus offering a harmonized basis of knowledge, information and evidence for decision-making. marine fisheriesfishing operationscatch compositionspeciessamplingecosystem conservationdata collectionmonitoring techniqueshttp://www.fao.org/3/ca4914en/CA4914EN.pdfURN:ISBN:978-92-5-131538-5 |
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marine fisheries fishing operations catch composition species sampling ecosystem conservation data collection monitoring techniques marine fisheries fishing operations catch composition species sampling ecosystem conservation data collection monitoring techniques |
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marine fisheries fishing operations catch composition species sampling ecosystem conservation data collection monitoring techniques marine fisheries fishing operations catch composition species sampling ecosystem conservation data collection monitoring techniques 1423211779386 Carpentieri, P. 185034 FAO, Rome (Italy). Fisheries and Aquaculture Dept. eng 188247 FAO, Rome (Italy). General Fisheries Commission for the Mediterranean eng Monitoring discards in Mediterranean and Black Sea fisheries: methodology for data collection |
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Discards – the part of the catch that is not retained on board, which may include target species or any other (commercial and non-commercial) species that are returned at sea dead or alive – usually result in a reduction of harvesting opportunities and may have negative consequences on the stocks, ecosystems and the marine environment. In the Mediterranean and the Black Sea, studies on discards only cover a small portion of the total fishing activities and discard rates are often poorly estimated or totally unknown. Information is lacking for many types of fishing gear, countries and GFCM subregions, and most available studies only cover relatively short periods and small areas. Discards therefore represent a major source of uncertainty about the actual fishing mortality rates of stocks. These knowledge gaps highlight the need to expand discard monitoring programmes and standardize practices, so to assess discards appropriately and address their important impacts. This publication and the methodology discussed herein aim to provide a framework for the development and implementation of an efficient, standardized data collection and monitoring system for discards through on-board observations, questionnaires at landing sites and self-sampling activities. It ensures minimum common standards for the collection of discards data and allows for repeatability and comparisons among fisheries across the region, thus offering a harmonized basis of knowledge, information and evidence for decision-making.
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format |
Texto |
topic_facet |
marine fisheries fishing operations catch composition species sampling ecosystem conservation data collection monitoring techniques |
author |
1423211779386 Carpentieri, P. 185034 FAO, Rome (Italy). Fisheries and Aquaculture Dept. eng 188247 FAO, Rome (Italy). General Fisheries Commission for the Mediterranean eng |
author_facet |
1423211779386 Carpentieri, P. 185034 FAO, Rome (Italy). Fisheries and Aquaculture Dept. eng 188247 FAO, Rome (Italy). General Fisheries Commission for the Mediterranean eng |
author_sort |
1423211779386 Carpentieri, P. |
title |
Monitoring discards in Mediterranean and Black Sea fisheries: methodology for data collection |
title_short |
Monitoring discards in Mediterranean and Black Sea fisheries: methodology for data collection |
title_full |
Monitoring discards in Mediterranean and Black Sea fisheries: methodology for data collection |
title_fullStr |
Monitoring discards in Mediterranean and Black Sea fisheries: methodology for data collection |
title_full_unstemmed |
Monitoring discards in Mediterranean and Black Sea fisheries: methodology for data collection |
title_sort |
monitoring discards in mediterranean and black sea fisheries: methodology for data collection |
publisher |
Rome (Italy) FAO |
publishDate |
2019 |
url |
http://www.fao.org/3/ca4914en/CA4914EN.pdf |
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