{"id":88047,"date":"2018-03-10T00:12:59","date_gmt":"2018-03-10T00:12:59","guid":{"rendered":""},"modified":"2018-03-10T00:12:59","modified_gmt":"2018-03-10T00:12:59","slug":"estrategia-adaptativa-de-la%c2%adquenes-saxa%c2%adcolas-y-terra%c2%adcolas-en-ambientes-semiaridos-aspectos-morfologicos-ultraestructurales-moleculares-ecofisiologicos-y-relaciones-talo-sustrato","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/estrategia-adaptativa-de-la%c2%adquenes-saxa%c2%adcolas-y-terra%c2%adcolas-en-ambientes-semiaridos-aspectos-morfologicos-ultraestructurales-moleculares-ecofisiologicos-y-relaciones-talo-sustrato\/","title":{"rendered":"Estrategia adaptativa de l\u00edquenes sax\u00edcolas y terr\u00edcolas en ambientes semi\u00e1ridos. aspectos morfol\u00f3gicos, ultraestructurales, moleculares, ecofisiol\u00f3gicos y relaciones talo-sustrato."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Virginia Souza-egipsy Sanchez <\/strong><\/h2>\n<p>El objetibo principal de esta tesis es abordar el estudio de las comunidades liqu\u00e9nicas terr\u00edcolas y sax\u00edcolas que forman parte de las costras microbi\u00f3ticas del se semi\u00e1rido de la peninsula ib\u00e9rica desde el punto de vista estructura-funci\u00f3n. los l\u00edquenes son los principales componentes de las costras microbi\u00f3ticas estudiadas, aunque tambi\u00e9n se describe la distribuci\u00f3n de otros microorganismos litobi\u00f3nticos. El trabajo se centra en cinco especies liqu\u00e9nicas diferentes elegidas en funci\u00f3n de su biotipo e importancia relativa en las comunidades(d. diacapsis, parmelia pulla, p. Polornyi squamarina lentigera, xanthoria parientina) y en dos ambientes diferentes en funci\u00f3n del sustrato y la influencia mar\u00edtima(desierto de tabernas,margas yes\u00edferas; cabo de gata, rocas volc\u00e1nicas y sedimentarias). Se utilizaron fundamentalmente diferentes t\u00e9cnicas de microscop\u00eda electr\u00f3nica para describir como las caracter\u00edsticas morfol\u00f3gicas y ultraestructurales del talo y la interfase liquen-sustrato, influyen en la estrategia adaptiva de estos organismos en el ambiente semi\u00e1rido y en la infiltraci\u00f3n de agua en el suelo. Estos aspectos fueron complementados con datos moleculares(secuenciaci\u00f3n de las regiones its ssu rdna de los ficobiontes liqu\u00e9nicos) y con experimentos de campo(medidas de la actividad fotosint\u00e9tica in situ), as\u00ed como con la descripci\u00f3n de las condiciones microclim\u00e1ticas de los dos ambientes estudiados durante las diferentes estaciones. Las t\u00e9cnicas de microscop\u00eda electr\u00f3nica abarcan desde la microscop\u00eda \u00f3ptica petrogr\u00e1fica y convencional hasta microscop\u00eda electr\u00f3nica de transmisi\u00f3n(con fijaci\u00f3n qu\u00edmica o por criot\u00e9cnicas), la microscop\u00eda electr\u00f3nica del barrido, tanto en muestras hidratadas y congeladas(microscop\u00eda de barrido a bajas temperaturas ltsem), como en muestras sin ning\u00fan tratamiento(microscop\u00eda ambiental esem). La t\u00e9cnica de microscop\u00eda de barrido en muestras embebidas en resina y pulid<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estrategia adaptativa de l\u00edquenes sax\u00edcolas y terr\u00edcolas en ambientes semi\u00e1ridos. aspectos morfol\u00f3gicos, ultraestructurales, moleculares, ecofisiol\u00f3gicos y relaciones talo-sustrato.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estrategia adaptativa de l\u00edquenes sax\u00edcolas y terr\u00edcolas en ambientes semi\u00e1ridos. aspectos morfol\u00f3gicos, ultraestructurales, moleculares, ecofisiol\u00f3gicos y relaciones talo-sustrato. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Virginia Souza-egipsy Sanchez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 18\/12\/2000<\/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>Carmen Ascaso Ciria<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Ana Mar\u00eda Crespo de las casas <\/li>\n<li>thomas Friedl (vocal)<\/li>\n<li>xavier Ximona pages (vocal)<\/li>\n<li>Fernando Valladares ros (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Virginia Souza-egipsy Sanchez El objetibo principal de esta tesis es abordar el estudio de las comunidades liqu\u00e9nicas [&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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