Body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western Mediterranean and the influence of the environmental features
Rueda, Lucía ... et. al.-- Special issue The wrapping up of the IDEADOS project: International Workshop on Environment, Ecosystems and Demersal Resources, and Fisheries.-- 9 pages, 4 figures, 6 tables
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| Subjects: | Western Mediterranean, Hydrography, Body condition, Balearic Islands, Trophic resources, Demersal resources, |
| Online Access: | http://hdl.handle.net/10261/104265 |
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dig-icm-es-10261-1042652020-12-09T17:48:07Z Body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western Mediterranean and the influence of the environmental features Rueda, Lucía Abelló, Pere Olivar, M. Pilar Ramón, Montserrat Massutí, Enric Western Mediterranean Hydrography Body condition Balearic Islands Trophic resources Demersal resources Rueda, Lucía ... et. al.-- Special issue The wrapping up of the IDEADOS project: International Workshop on Environment, Ecosystems and Demersal Resources, and Fisheries.-- 9 pages, 4 figures, 6 tables Body condition indices not only are often used as reliable indicators of the nutritional status of individuals but also can they be utilized to provide insights regarding food availability and habitat quality. The aim of this study was to evaluate the connection between the body condition of the demersal species and the environmental features in the water column (i.e. the hydrographic conditions and the potential trophic resources) in two proximate areas, the north and south regions of the Balearic Islands (western Mediterranean), viz., the Balearic sub-basin (BsB) and the Algerian sub-basin (AsB), respectively, with different geomorphological and hydrodynamic features. Body condition indices were calculated for individuals of 21 demersal species including 11 teleosts, 4 elasmobranchs, 3 cephalopods and 3 crustaceans, which represented >. 70-77% of the deep water resources, captured by bottom trawling. The morphometric indices, viz., Relative Condition Index (Kn) and Standardised Residuals (SR) from the length-weight relationship, were used. The results for each one of the 21 species indicated a significantly better condition in terms of Kn and SR in the BsB, for 7 and 9 species, respectively. In addition, a general model, including the 21 species together, showed better body condition in the BsB, and during the summer. The spatial and temporal differences in the body condition are discussed in the context of the environmental variables characterising both the study areas, which showed significant variations, for some of the hydrographic features (chlorophyll a, dissolved oxygen, salinity, potential density and temperature), as well as for some of the potential trophic resources (mesopelagic and epibenthic fauna). These findings suggest an environmental effect on the body condition of the deep-water resources in the Balearic Islands, one of the most oligotrophic areas of the western Mediterranean, and reveal more suitable environmental conditions for these species on the northern insular margin, off the Archipelago. In addition to these ecological connections, the results also hold interest for the management and conservation of the habitats essential for the sustainability of fisheries. © 2013 Elsevier B.V. This research has been sponsored by the project IDEADOS (CTM2008-04489-C03-01-02-03, CTM2008-04873-E). Additional funding has also been obtained from the Autonomous Government of the Balearic Islands. A. P. Torres acknowledges pre-doctoral FPI Fellowship support from the Regional Government of the Balearic Islands, Conselleria d'Educacció, Cultura i Universitats, selected as part of an operational programme cofinanced by the Fondo Social Europeo Peer Reviewed 2014-10 2014-11-04T09:47:12Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1016/j.jmarsys.2013.11.018 issn: 0924-7963 e-issn: 1879-1573 Journal of Marine Systems 138: 194-202 (2014) http://hdl.handle.net/10261/104265 10.1016/j.jmarsys.2013.11.018 https://doi.org/10.1016/j.jmarsys.2013.11.018 none Elsevier |
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Western Mediterranean Hydrography Body condition Balearic Islands Trophic resources Demersal resources Western Mediterranean Hydrography Body condition Balearic Islands Trophic resources Demersal resources |
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Western Mediterranean Hydrography Body condition Balearic Islands Trophic resources Demersal resources Western Mediterranean Hydrography Body condition Balearic Islands Trophic resources Demersal resources Rueda, Lucía Abelló, Pere Olivar, M. Pilar Ramón, Montserrat Massutí, Enric Body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western Mediterranean and the influence of the environmental features |
| description |
Rueda, Lucía ... et. al.-- Special issue The wrapping up of the IDEADOS project: International Workshop on Environment, Ecosystems and Demersal Resources, and Fisheries.-- 9 pages, 4 figures, 6 tables |
| format |
artículo |
| topic_facet |
Western Mediterranean Hydrography Body condition Balearic Islands Trophic resources Demersal resources |
| author |
Rueda, Lucía Abelló, Pere Olivar, M. Pilar Ramón, Montserrat Massutí, Enric |
| author_facet |
Rueda, Lucía Abelló, Pere Olivar, M. Pilar Ramón, Montserrat Massutí, Enric |
| author_sort |
Rueda, Lucía |
| title |
Body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western Mediterranean and the influence of the environmental features |
| title_short |
Body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western Mediterranean and the influence of the environmental features |
| title_full |
Body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western Mediterranean and the influence of the environmental features |
| title_fullStr |
Body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western Mediterranean and the influence of the environmental features |
| title_full_unstemmed |
Body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western Mediterranean and the influence of the environmental features |
| title_sort |
body condition of the deep water demersal resources at two adjacent oligotrophic areas of the western mediterranean and the influence of the environmental features |
| publisher |
Elsevier |
| url |
http://hdl.handle.net/10261/104265 |
| work_keys_str_mv |
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