Bottom trawl discards in the northeastern Mediterranean Sea
Discard practices of trawlers in three main areas of the Aegean and western Ionian Seas were examined. Data collected on board commercial vessels during 3 years (1995–1998) of seasonal (Autumn, Winter, Spring) monitoring were used to estimate discarded quantities. About 44% (range 39–49%) of the tot...
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| Veröffentlicht in: | Fisheries research 2001-10, Vol.53 (2), p.181-195 |
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| creator | Machias, A Vassilopoulou, V Vatsos, D Bekas, P Kallianiotis, A Papaconstantinou, C Tsimenides, N |
| description | Discard practices of trawlers in three main areas of the Aegean and western Ionian Seas were examined. Data collected on board commercial vessels during 3 years (1995–1998) of seasonal (Autumn, Winter, Spring) monitoring were used to estimate discarded quantities. About 44% (range 39–49%) of the total catch was discarded at sea (13
500–22
000
t annually); the main component of the discards was fish. Hauls were classified into two main clusters using the discard quantities of fish, crustaceans, and cephalopods. The two clusters were discriminated by depth. Two sets of equations that classify new hauls in the clusters, using depths and duration of the hauls or marketable yield, were applied. The discarded yield of fish showed more precise relationships with their marketable yield in each season than did crustaceans and cephalopods. The latter were strongly affected by the specific characteristic of the different areas and clusters. |
| doi_str_mv | 10.1016/S0165-7836(00)00298-8 |
| format | Article |
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500–22
000
t annually); the main component of the discards was fish. Hauls were classified into two main clusters using the discard quantities of fish, crustaceans, and cephalopods. The two clusters were discriminated by depth. Two sets of equations that classify new hauls in the clusters, using depths and duration of the hauls or marketable yield, were applied. The discarded yield of fish showed more precise relationships with their marketable yield in each season than did crustaceans and cephalopods. The latter were strongly affected by the specific characteristic of the different areas and clusters.</description><identifier>ISSN: 0165-7836</identifier><identifier>EISSN: 1872-6763</identifier><identifier>DOI: 10.1016/S0165-7836(00)00298-8</identifier><identifier>CODEN: FISRDJ</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Animal, plant and microbial ecology ; Applied ecology ; Biological and medical sciences ; By-catch ; Discard quantities ; Exploitation and management of natural biological resources (hunting, fishing and exploited populations survey, etc.) ; Fundamental and applied biological sciences. Psychology ; Marine ; Northeastern Mediterranean ; On-deck sorting</subject><ispartof>Fisheries research, 2001-10, Vol.53 (2), p.181-195</ispartof><rights>2001 Elsevier Science B.V.</rights><rights>2002 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c517t-3d27ce60fcd0f1be2eadbf73b6a507b3f2028f797c69b0810ef40ee7ac46f8003</citedby><cites>FETCH-LOGICAL-c517t-3d27ce60fcd0f1be2eadbf73b6a507b3f2028f797c69b0810ef40ee7ac46f8003</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0165783600002988$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14140676$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Machias, A</creatorcontrib><creatorcontrib>Vassilopoulou, V</creatorcontrib><creatorcontrib>Vatsos, D</creatorcontrib><creatorcontrib>Bekas, P</creatorcontrib><creatorcontrib>Kallianiotis, A</creatorcontrib><creatorcontrib>Papaconstantinou, C</creatorcontrib><creatorcontrib>Tsimenides, N</creatorcontrib><title>Bottom trawl discards in the northeastern Mediterranean Sea</title><title>Fisheries research</title><description>Discard practices of trawlers in three main areas of the Aegean and western Ionian Seas were examined. Data collected on board commercial vessels during 3 years (1995–1998) of seasonal (Autumn, Winter, Spring) monitoring were used to estimate discarded quantities. About 44% (range 39–49%) of the total catch was discarded at sea (13
500–22
000
t annually); the main component of the discards was fish. Hauls were classified into two main clusters using the discard quantities of fish, crustaceans, and cephalopods. The two clusters were discriminated by depth. Two sets of equations that classify new hauls in the clusters, using depths and duration of the hauls or marketable yield, were applied. The discarded yield of fish showed more precise relationships with their marketable yield in each season than did crustaceans and cephalopods. The latter were strongly affected by the specific characteristic of the different areas and clusters.</description><subject>Animal, plant and microbial ecology</subject><subject>Applied ecology</subject><subject>Biological and medical sciences</subject><subject>By-catch</subject><subject>Discard quantities</subject><subject>Exploitation and management of natural biological resources (hunting, fishing and exploited populations survey, etc.)</subject><subject>Fundamental and applied biological sciences. 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Psychology</topic><topic>Marine</topic><topic>Northeastern Mediterranean</topic><topic>On-deck sorting</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Machias, A</creatorcontrib><creatorcontrib>Vassilopoulou, V</creatorcontrib><creatorcontrib>Vatsos, D</creatorcontrib><creatorcontrib>Bekas, P</creatorcontrib><creatorcontrib>Kallianiotis, A</creatorcontrib><creatorcontrib>Papaconstantinou, C</creatorcontrib><creatorcontrib>Tsimenides, N</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Fisheries research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Machias, A</au><au>Vassilopoulou, V</au><au>Vatsos, D</au><au>Bekas, P</au><au>Kallianiotis, A</au><au>Papaconstantinou, C</au><au>Tsimenides, N</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Bottom trawl discards in the northeastern Mediterranean Sea</atitle><jtitle>Fisheries research</jtitle><date>2001-10-01</date><risdate>2001</risdate><volume>53</volume><issue>2</issue><spage>181</spage><epage>195</epage><pages>181-195</pages><issn>0165-7836</issn><eissn>1872-6763</eissn><coden>FISRDJ</coden><abstract>Discard practices of trawlers in three main areas of the Aegean and western Ionian Seas were examined. Data collected on board commercial vessels during 3 years (1995–1998) of seasonal (Autumn, Winter, Spring) monitoring were used to estimate discarded quantities. About 44% (range 39–49%) of the total catch was discarded at sea (13
500–22
000
t annually); the main component of the discards was fish. Hauls were classified into two main clusters using the discard quantities of fish, crustaceans, and cephalopods. The two clusters were discriminated by depth. Two sets of equations that classify new hauls in the clusters, using depths and duration of the hauls or marketable yield, were applied. The discarded yield of fish showed more precise relationships with their marketable yield in each season than did crustaceans and cephalopods. The latter were strongly affected by the specific characteristic of the different areas and clusters.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/S0165-7836(00)00298-8</doi><tpages>15</tpages></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Animal, plant and microbial ecology Applied ecology Biological and medical sciences By-catch Discard quantities Exploitation and management of natural biological resources (hunting, fishing and exploited populations survey, etc.) Fundamental and applied biological sciences. Psychology Marine Northeastern Mediterranean On-deck sorting |
| title | Bottom trawl discards in the northeastern Mediterranean Sea |
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