{"id":14837,"date":"2018-03-09T09:01:42","date_gmt":"2018-03-09T09:01:42","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/ecologa%c2%ada-alimentaria-de-las-aves-marinas-en-mar-abierto-importancia-de-las-pesquerias-comerciales-en-el-mediterraneo-noroccidental\/"},"modified":"2018-03-09T09:01:42","modified_gmt":"2018-03-09T09:01:42","slug":"ecologa%c2%ada-alimentaria-de-las-aves-marinas-en-mar-abierto-importancia-de-las-pesquerias-comerciales-en-el-mediterraneo-noroccidental","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/ecologa%c2%ada-alimentaria-de-las-aves-marinas-en-mar-abierto-importancia-de-las-pesquerias-comerciales-en-el-mediterraneo-noroccidental\/","title":{"rendered":"Ecolog\u00eda alimentaria de las aves marinas en mar abierto: importancia de las pesquer\u00edas comerciales en el mediterr\u00e1neo noroccidental"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Manuel Arcos Pros <\/strong><\/h2>\n<p>Se estudiaron las interacciones entre las aves marinas y dos flotas pesqueras de especial relevancia en el mediterr\u00e1neo noroccidental: arrastreros y tra\u00ed\u00f1as. En una primera secci\u00f3n (cap\u00edtulos 1 y 2) se aporta informaci\u00f3n general, de tipo descriptivo (pr\u00e1cticas de pesca y naturaleza de las capturas y los descartes, e implicados para las aves; n\u00famero de aves asociadas a los pesqueros en funci\u00f3n del tipo y de la actividad de \u00e9stos; estimas de eficiencia e interacciones; estima del provecho que obtienen las aves, en t\u00e9rminos energ\u00e9ticos, de seguir a los pesqueros). Los arrastreros son m\u00e1s provechosos, ofreciendo grandes cantidades de descartes (el 85% de los cuales, en promedio, es capturado por las aves). Considerando la comunidad reproductora de aves en el delta del ebro, los descartes proporcionan cerca del 65% de los requerimientos energ\u00e9ticos de \u00e9sta, siendo de especial importancia para las gaviotas de mayor tama\u00f1o (gaviota de audouin larus audounii -77%- y gaviota patiamarilla larus cachinnans -58%-) y poco importantes para los charranes (charr\u00e1n com\u00fan sterna hirundo-19%- y charr\u00e1n patinegro sterna sandvicensis-1,5%-). Las tra\u00ed\u00f1as, m\u00e1s selectivas, relativamente impredecibles y con actividad nocturna, son menos provechosas para la mayor\u00eda de aves. con todo, la gaviota de audouin parece obtener un cierto provecho de estas barcas, capturando peces concentrados cerca de la superficie durante su captura. La importancia de las tra\u00ed\u00f1as para esta gaviota es mayor durante el invierno y, en el periodo reproductor, durante las vedas de arrastre (ausencia de descartes).  en una segunda secci\u00f3n se tratan temas m\u00e1s particulares, de especial inter\u00e9s. El cap\u00edtulo 3 se dedica a estudiar la posible relaci\u00f3n de competencia entre la abundante gaviota patiamarilla y la rara gaviota de audouin. Ambas especies utilizan ampliamente los descartes, la primera de forma m\u00e1s oportunista y la segunda de forma m\u00e1s eficiente y especializ<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Ecolog\u00eda alimentaria de las aves marinas en mar abierto: importancia de las pesquer\u00edas comerciales en el mediterr\u00e1neo noroccidental<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Ecolog\u00eda alimentaria de las aves marinas en mar abierto: importancia de las pesquer\u00edas comerciales en el mediterr\u00e1neo noroccidental <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Manuel Arcos Pros <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 20\/12\/2001<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Daniel Oro De Ribas<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jacinto Nadal puigdefabregas <\/li>\n<li>hernan Becker peter (vocal)<\/li>\n<li>william Furness robert (vocal)<\/li>\n<li>pere Abello sala (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Manuel Arcos Pros Se estudiaron las interacciones entre las aves marinas y dos flotas pesqueras de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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