{"id":17554,"date":"2018-03-09T09:05:40","date_gmt":"2018-03-09T09:05:40","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/dinamica-de-la-regeneracion-de-las-acebedas-ilex-aquifolium-l-en-el-centro-peninsular\/"},"modified":"2018-03-09T09:05:40","modified_gmt":"2018-03-09T09:05:40","slug":"dinamica-de-la-regeneracion-de-las-acebedas-ilex-aquifolium-l-en-el-centro-peninsular","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/dinamica-de-la-regeneracion-de-las-acebedas-ilex-aquifolium-l-en-el-centro-peninsular\/","title":{"rendered":"Din\u00e1mica de la regeneraci\u00f3n de las acebedas (ilex aquifolium l.) en el centro peninsular"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mar\u00eda  Sagrario Arrieta Algarra <\/strong><\/h2>\n<p>Se realiza un an\u00e1lisis del ciclo de regeneraci\u00f3n de las poblaciones de acebo de dos localidades: oncala, en soria, y robregordo, en Madrid, estratificando el an\u00e1lisis en distintos microh\u00e1bitas identificables dentro de cada acebeda: interior del bosque cerrado, bosque en claros, borde del mismo, prado abierto, arbustos aislados, y bosques adyacentes (pinar y melojar).  en primer lugar se estudia la dispersi\u00f3n de semillas, detectandose una lluvia de semillas muy diferencial entre microambientes, y una distribuci\u00f3n especial agregada de las mismas.  el estudio del banco de semillas revela una distribuci\u00f3n similar al observado en la dispersi\u00f3n, aunque con densidades muy superiores. La viabilidad de estas semillas es superior al 50%. A partir de un ensayo de plantaci\u00f3n, se sigue la din\u00e1mica temporal del banco de semillas durante tres a\u00f1os, observ\u00e1ndose c\u00f3mo las semillas van interrumpiendo la dormancia, y germinan mayoritariamente entre la 2\u00aa y 3\u00aa primavera.  la emergencia de pl\u00e1ntulas tambi\u00e9n es diferencial entre microh\u00e1bitats, y variable entre a\u00f1os, sobre todo en los microh\u00e1bitas del interior de la acebeda. Su supervivencia interanual es muy baja, especialmente all\u00ed donde la intensidad de germinaci\u00f3n es superior. Posibles agentes condicionantes de la mortalidad son: herbivor\u00eda por vertebrados e interbrados, disponibilidad lum\u00ednica, perturbacione.  tambi\u00e9n se realiz\u00f3 un experimento sometiendo a pl\u00e1ntulas de acebedo a un gradiente lum\u00ednico, analizando su supervivencia y morfolog\u00eda. Todos los par\u00e1metros estudiados (sla, lar, lwr, etc) revelan una alta tolerancia de la especie al estr\u00e9s lum\u00ednico por defecto, mediante estrategias de lento crecimiento, y gran area foliar.  por \u00faltimo, el an\u00e1lisis de la estructura de edad de las masas boscosas, mediante t\u00e9cnica dendrol\u00f3gicas revela una edad de las masas de entre 80 y 100 a\u00f1os, destacando el vigor de rebrote de la especie, as\u00ed como una fuerte supresi\u00f3n del<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Din\u00e1mica de la regeneraci\u00f3n de las acebedas (ilex aquifolium l.) en el centro peninsular<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Din\u00e1mica de la regeneraci\u00f3n de las acebedas (ilex aquifolium l.) en el centro peninsular <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mar\u00eda  Sagrario Arrieta Algarra <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 18\/06\/2002<\/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>Francisco Suarez Cardona<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: bego\u00f1a Peco v\u00e1zquez <\/li>\n<li>Jos\u00e9 ram\u00f3n Obeso su\u00e1rez (vocal)<\/li>\n<li>Fernando Valladares ros (vocal)<\/li>\n<li>dolores Garc\u00eda gonz\u00e1lez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mar\u00eda Sagrario Arrieta Algarra Se realiza un an\u00e1lisis del ciclo de regeneraci\u00f3n de las poblaciones de acebo [&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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