Trammel net catch species composition, catch rates and metiers in southern European waters: A multivariate approach
We identified and quantified the effect of season, depth, and inner and outer panel mesh size on the trammel net catch species composition and catch rates in four southern European areas (Northeast Atlantic: Basque Country, Spain; Algarve, Portugal; Gulf of Cadiz, Spain; Mediterranean: Cyclades, Gre...
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Online Access: | http://hdl.handle.net/10400.1/8841 https://doi.org/10.1016/j.fishres.2006.03.003 |
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ftunivalgarve:oai:sapientia.ualg.pt:10400.1/8841 2023-05-15T17:41:43+02:00 Trammel net catch species composition, catch rates and metiers in southern European waters: A multivariate approach Stergiou, Konstantinos Moutopoulos, D. K. Soriguer, M. C. Puente, E. Lino, P. G. Zabala, C. Monteiro, Pedro Errazkin, L. A. Erzini, Karim 2006 http://hdl.handle.net/10400.1/8841 https://doi.org/10.1016/j.fishres.2006.03.003 eng eng Elsevier WOS:000238401700021 0165-7836 http://hdl.handle.net/10400.1/8841 doi:10.1016/j.fishres.2006.03.003 restrictedAccess article 2006 ftunivalgarve https://doi.org/10.1016/j.fishres.2006.03.003 2023-02-08T01:04:29Z We identified and quantified the effect of season, depth, and inner and outer panel mesh size on the trammel net catch species composition and catch rates in four southern European areas (Northeast Atlantic: Basque Country, Spain; Algarve, Portugal; Gulf of Cadiz, Spain; Mediterranean: Cyclades, Greece), all of which are characterised by important trammel net fisheries. In each area, we conducted, in 1999-2000, seasonal, experimental fishing trials at various depths with trammel nets of six different inner/outer panel mesh combinations (i.e., two large outer panel meshes and three small inner panel meshes). Overall, our study covered some of the most commonly used inner panel mesh sizes, ranging from 40 to 140 mm (stretched). We analysed the species composition and catch rates of the different inner/outer panel combinations with regression, multivariate analysis (cluster analysis and multidimensional scaling) and other 'community' techniques (number of species, dominance curves). All our analyses indicated that the outer panel mesh sizes used in the present study did not significantly affect the catch characteristics in terms of number of species, catch rates and species composition. Multivariate analyses and seasonal dominance plots indicated that in Basque, Algarve and Cyclades waters, where sampling covered wide depth ranges, both season and depth strongly affected catch species compositions. For the Gulf of Cadiz, where sampling was restricted to depths 10-30 m, season was the only factor affecting catch species composition and thus group formation. In contrast, the inner panel mesh size did not generally affect multidimensional group formation in all areas but affected the dominance of the species caught in the Algarve and the Gulf of Cadiz. Multivariate analyses also revealed 11 different metiers (i.e., season-depth-species-inner panel mesh size combinations) in the four areas. This clearly indicated the existence of trammel net 'hot spots', which represent essential habitats (e.g., spawning, nursery or ... Article in Journal/Newspaper Northeast Atlantic Universidade do Algarve: Sapienta Fisheries Research 79 1-2 170 182 |
institution |
Open Polar |
collection |
Universidade do Algarve: Sapienta |
op_collection_id |
ftunivalgarve |
language |
English |
description |
We identified and quantified the effect of season, depth, and inner and outer panel mesh size on the trammel net catch species composition and catch rates in four southern European areas (Northeast Atlantic: Basque Country, Spain; Algarve, Portugal; Gulf of Cadiz, Spain; Mediterranean: Cyclades, Greece), all of which are characterised by important trammel net fisheries. In each area, we conducted, in 1999-2000, seasonal, experimental fishing trials at various depths with trammel nets of six different inner/outer panel mesh combinations (i.e., two large outer panel meshes and three small inner panel meshes). Overall, our study covered some of the most commonly used inner panel mesh sizes, ranging from 40 to 140 mm (stretched). We analysed the species composition and catch rates of the different inner/outer panel combinations with regression, multivariate analysis (cluster analysis and multidimensional scaling) and other 'community' techniques (number of species, dominance curves). All our analyses indicated that the outer panel mesh sizes used in the present study did not significantly affect the catch characteristics in terms of number of species, catch rates and species composition. Multivariate analyses and seasonal dominance plots indicated that in Basque, Algarve and Cyclades waters, where sampling covered wide depth ranges, both season and depth strongly affected catch species compositions. For the Gulf of Cadiz, where sampling was restricted to depths 10-30 m, season was the only factor affecting catch species composition and thus group formation. In contrast, the inner panel mesh size did not generally affect multidimensional group formation in all areas but affected the dominance of the species caught in the Algarve and the Gulf of Cadiz. Multivariate analyses also revealed 11 different metiers (i.e., season-depth-species-inner panel mesh size combinations) in the four areas. This clearly indicated the existence of trammel net 'hot spots', which represent essential habitats (e.g., spawning, nursery or ... |
format |
Article in Journal/Newspaper |
author |
Stergiou, Konstantinos Moutopoulos, D. K. Soriguer, M. C. Puente, E. Lino, P. G. Zabala, C. Monteiro, Pedro Errazkin, L. A. Erzini, Karim |
spellingShingle |
Stergiou, Konstantinos Moutopoulos, D. K. Soriguer, M. C. Puente, E. Lino, P. G. Zabala, C. Monteiro, Pedro Errazkin, L. A. Erzini, Karim Trammel net catch species composition, catch rates and metiers in southern European waters: A multivariate approach |
author_facet |
Stergiou, Konstantinos Moutopoulos, D. K. Soriguer, M. C. Puente, E. Lino, P. G. Zabala, C. Monteiro, Pedro Errazkin, L. A. Erzini, Karim |
author_sort |
Stergiou, Konstantinos |
title |
Trammel net catch species composition, catch rates and metiers in southern European waters: A multivariate approach |
title_short |
Trammel net catch species composition, catch rates and metiers in southern European waters: A multivariate approach |
title_full |
Trammel net catch species composition, catch rates and metiers in southern European waters: A multivariate approach |
title_fullStr |
Trammel net catch species composition, catch rates and metiers in southern European waters: A multivariate approach |
title_full_unstemmed |
Trammel net catch species composition, catch rates and metiers in southern European waters: A multivariate approach |
title_sort |
trammel net catch species composition, catch rates and metiers in southern european waters: a multivariate approach |
publisher |
Elsevier |
publishDate |
2006 |
url |
http://hdl.handle.net/10400.1/8841 https://doi.org/10.1016/j.fishres.2006.03.003 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
WOS:000238401700021 0165-7836 http://hdl.handle.net/10400.1/8841 doi:10.1016/j.fishres.2006.03.003 |
op_rights |
restrictedAccess |
op_doi |
https://doi.org/10.1016/j.fishres.2006.03.003 |
container_title |
Fisheries Research |
container_volume |
79 |
container_issue |
1-2 |
container_start_page |
170 |
op_container_end_page |
182 |
_version_ |
1766143428152786944 |