{"id":92486,"date":"2018-03-11T10:11:28","date_gmt":"2018-03-11T10:11:28","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/proliferaciones-de-fitoplancton-toxico-en-capas-finas\/"},"modified":"2018-03-11T10:11:28","modified_gmt":"2018-03-11T10:11:28","slug":"proliferaciones-de-fitoplancton-toxico-en-capas-finas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/vigo\/proliferaciones-de-fitoplancton-toxico-en-capas-finas\/","title":{"rendered":"Proliferaciones de fitoplancton t\u00f3xico en capas finas"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Lourdes Velo Su\u00e1rez <\/strong><\/h2>\n<p>Las c\u00e9lulas de dinophysis spp -productoras de toxinas diarreog\u00e9nicas dsp- y de diatomeas pennadas del g\u00e9nero pseudo-nitzxchia- productoras de toxinas anest\u00e9sicas asp -suelen agregarse durante condiciones de estratificaci\u00f3n termo-halina, en capas de discontinuidad (capas finas). Estas \u00abcapas finas\u00bb pueden aparecer asociadas a microestructuras f\u00edsicas. Con la escaa resoluci\u00f3n vertical de los instrumentos de muestreo convencionales (ctds, botellas oceanogr\u00e1ficas, bombas, etc.) Es muy dificil loclizar con precisi\u00f3n estas capas y determinar la micro-distribuci\u00f3n vertical de los organismos diana. Las caracter\u00edsticas qu\u00edmicas de estas capas tampoco han sido muy estudiadas, debido en parte a las dificultades que presenta el an\u00e1lisis de complejas matrices de materia org\u00e1nica disuelta presente en concentraciones traza. Adem\u00e1s, los organismos agregados en las capas finas pueden presentar condiciones metab\u00f3licas \u00f3ptimas en comparaci\u00f3n con las de otros individuos de la misma especie dispersos en otras capas de la columna de agua. La aplicaci\u00f3n de sofisticados instrumentos de muestreo de material biol\u00f3gico, tales como el \u00abperfilador vertical de part\u00edculas\u00bb (ipsap) y el \u00abmuestreador de escala fina\u00bb (fss) del ifremer, junto con la descripci\u00f3n a escala fina del medio f\u00edsico mediante perfiladores ac\u00fasticos (adcp y adv) y ctd ondulante (scanfish), permiten caracterizar estas capas y los organismos agregados en ellas utilizando las herramientas apropiadas. Stas obsevaciones se complementan con la concentraci\u00f3n y manipulaci\u00f3n de microalgas in vivo (con o sin fluor\u00f3foros a\u00f1adidos a continuaci\u00f3n) para la observaci\u00f3n e condiciones fisiol\u00f3gicas (microscop\u00eda nomarski y de epifluorescencia) en tiempo real. esta tesis trata sobre la din\u00e1mica de formaci\u00f3n, persistencia y erosi\u00f3n de las capas finas de microalgas t\u00f3xicas en el transcurso de tres campa\u00f1as oceanogr\u00e1ficas multidisciplinares desarrolladas en las r\u00edas baixas (galicia) y en el golfo de vizcaya entre 2003 y 2007. Por primera vez en las r\u00edas, la din\u00e1mica de las poblaciones (tasas de divisi\u00f3n, frecuencia de c\u00e9lulas viables, mortalidad) de micoalgas t\u00f3xicas y su comportamiento (migraci\u00f3n vertical, procesos mixotr\u00f3ficos&#8230;) Se estudia con la misma escala espacio-temporal que los procesos hidrodin\u00e1micos (intensidad y direcci\u00f3n de las corrientes; difusi\u00f3n vertical y turbulencia) de escala fina.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Proliferaciones de fitoplancton t\u00f3xico en capas finas<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Proliferaciones de fitoplancton t\u00f3xico en capas finas <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Lourdes Velo Su\u00e1rez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Vigo<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 26\/03\/2009<\/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>Beatriz Reguera  Ramirez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Francisco G\u00f3mez figueiras <\/li>\n<li>Manuel Ruiz villarreal (vocal)<\/li>\n<li>elisa Berdalet andr\u00e9s (vocal)<\/li>\n<li>Antonio Bode riestra (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Lourdes Velo Su\u00e1rez Las c\u00e9lulas de dinophysis spp -productoras de toxinas diarreog\u00e9nicas dsp- y de diatomeas pennadas [&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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