{"id":78054,"date":"2018-03-09T23:23:38","date_gmt":"2018-03-09T23:23:38","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/impacto-del-petroleo-en-la-distribucion-y-biomasa-de-las-cianobacterias-en-ecosistemas-naturales-y-artificiales\/"},"modified":"2018-03-09T23:23:38","modified_gmt":"2018-03-09T23:23:38","slug":"impacto-del-petroleo-en-la-distribucion-y-biomasa-de-las-cianobacterias-en-ecosistemas-naturales-y-artificiales","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/impacto-del-petroleo-en-la-distribucion-y-biomasa-de-las-cianobacterias-en-ecosistemas-naturales-y-artificiales\/","title":{"rendered":"\u00abimpacto del petr\u00f3leo en la distribuci\u00f3n y biomasa de las cianobacterias en ecosistemas naturales y artificiales\u00bb"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Elia Diestra Villanueva <\/strong><\/h2>\n<p>En el presente trabajo se ha estudiado el efecto del petr\u00f3leo en las cianobacterias, bacterias fototr\u00f3ficas oxig\u00e9nicas que forman las poblaciones dominantes de los tapetes microbianos. Se trata de ambientes bent\u00f3nicos estratificados situados en costas litorales y que se encuentran en ocasiones expuestos a los vertidos accidentales de petr\u00f3leo. El papel de las cianobacterias en la bioreparaci\u00f3n del crudo es un tema que suscita mucho inter\u00e9s, aunque no se han dado, hasta el presente momento, datos concluyentes sobre si la degradaci\u00f3n del petr\u00f3leo se produce exclusivamente por un tipo de cianobacteria o por un consorcio de microorganismos.  considerando el objetivo anteriormente expuesto, se ha analizado la diversidad, y determinado los perfiles de biomasa individual y total de las cianobacterias, mediante microscopio l\u00e1ser confocal (clsm) en los ambientes naturales contaminados y no contaminados por petr\u00f3leo (delta del ebro, salins-de-giraud, col\u00ed\u00b2nia de sant jordi, waulkmill bay, swanbister bay y etang de b\u00ed\u00aarre) y en ecosistemas artificiales (mesocosmos).  as\u00ed mismo, se ha aislado e identificado un consorcio de microorganismos con capacidad para degradar el petr\u00f3leo.  en los tapetes microbianos estudiados, se observan cambios tanto en la diversidad de las cianobacterias, como en su biomasa total. En los ambientes no contaminados se han identificado cianobacterias filamentosas como microcoleus chthonoplastes, oscillatoria sp., Lyngbya sp., Limnothrix sp. Y cianobacterias unicelulares como gloeocapsa sp., Chroococcus sp., Synechocystis sp., Localiz\u00e1ndose la concentraci\u00f3n m\u00e1xima de biomasa total principalmente en la capa \u00f3xica de los tapetes. En los ecosistemas poco contaminados, se han identificado principalmente cianobacterias unicelulares correspondientes al grupo pleurocapsa, siguiendo la biomasa total de estos microorganismos un perfil parecido al de los ambientes anteriormente mencionados. En los muy contaminados, se<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>\u00abimpacto del petr\u00f3leo en la distribuci\u00f3n y biomasa de las cianobacterias en ecosistemas naturales y artificiales\u00bb<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 \u00abimpacto del petr\u00f3leo en la distribuci\u00f3n y biomasa de las cianobacterias en ecosistemas naturales y artificiales\u00bb <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Elia Diestra Villanueva <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 20\/12\/2005<\/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>Isabel Esteve Mart\u00ednez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Carlos Abella ametller <\/li>\n<li>inmaculada Herrera calvet (vocal)<\/li>\n<li>robert Duran (vocal)<\/li>\n<li>Mar\u00eda dolores Bar\u00f3 marin\u00e9 (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Elia Diestra Villanueva En el presente trabajo se ha estudiado el efecto del petr\u00f3leo en las cianobacterias, [&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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