{"id":11150,"date":"2001-06-06T00:00:00","date_gmt":"2001-06-06T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/dinamica-de-los-sistemas-retamar-pasto-del-centro-de-la-pena%c2%adnsula-iberica\/"},"modified":"2001-06-06T00:00:00","modified_gmt":"2001-06-06T00:00:00","slug":"dinamica-de-los-sistemas-retamar-pasto-del-centro-de-la-pena%c2%adnsula-iberica","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/dinamica-de-los-sistemas-retamar-pasto-del-centro-de-la-pena%c2%adnsula-iberica\/","title":{"rendered":"Din\u00e1mica de los sistemas retamar-pasto del centro de la pen\u00ednsula ib\u00e9rica"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Antonio L\u00f3pez-pintor Alcon <\/strong><\/h2>\n<p>En los sistemas semi\u00e1ridos las especies arbustivas son interesantes desde un punto de vista ecol\u00f3gico debido a que bajo su orla y en su entorno inmediato se forman las denominadas \u00abislas de fertilidad\u00bb. En ellas, por efecto del matorral, se mantiene un mayor n\u00famero de especies de herb\u00e1ceas y aumenta la producci\u00f3n de biomasa. Estos complejos matorral-pasto, sistemas silvo-pastorales propiciados por la gesti\u00f3n ganadera tradicional, optimizan la productividad en ecosistemas limitados tanto por la disponibilidad de nutrientes como por las condiciones clim\u00e1ticas. El caso de los retamares, dominados por la leguminosa arbustiva r.Sphaerocarpa, es interesante debido a su gran expansi\u00f3n por la zona centro y sur de espa\u00f1a, como consecuencia de los cambios de uso del territorio y el abandono de tierra de cultivo.  factores clave en su din\u00e1mica son las perturbaciones y los herb\u00edvoros, principalmente los conejos. La combinaci\u00f3n de ambos da lugar a su estructura sabanoide, con un bajo n\u00famero de individuos viejos dispersos en una matriz de herb\u00e1ceas. As\u00ed mismo, la historia de perturbaci\u00f3n (tanto antr\u00f3pica como debida a los herb\u00edvoros) condiciona el grado de influencia ejercido por los arbustos y su extensi\u00f3n (las \u00abislas\u00bb antes mencionadas). Esto, unido a la selecci\u00f3n de h\u00e1bitat realizada por el conejo, con la consecuente modificaci\u00f3n diferencial de las distintas zonas, origina distintos ambientes con caracter\u00edsticas particulares tanto del estrato le\u00f1oso como de la comunidad herb\u00e1cea. La estructura de esta \u00faltima depende en gran medida, a escala detallada, de la posici\u00f3n dentro del dosel de las retamas, y de las modificaciones inducidas por \u00e9stas en las caracter\u00edsticas ed\u00e1ficas. A esta misma escala, la interacci\u00f3n mostrada en la bibliograf\u00eda como positiva por ambas partes, retama y herb\u00e1ceas del dosel, parece ser negativa por ambas partes en los primeros momentos de la regeneraci\u00f3n del estrato arbustivo.  tanto las pl\u00e1n<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Din\u00e1mica de los sistemas retamar-pasto del centro de la pen\u00ednsula ib\u00e9rica<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Din\u00e1mica de los sistemas retamar-pasto del centro de la pen\u00ednsula ib\u00e9rica <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Antonio L\u00f3pez-pintor Alcon <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Alcal\u00e1<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 06\/06\/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>Antonio Antonio G\u00f3mez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Francisco D\u00edaz pineda <\/li>\n<li>ram\u00f3n Soriguer (vocal)<\/li>\n<li>Francisco ignacio Pugnaire de iraola (vocal)<\/li>\n<li>carmen Bartolom\u00e9 esteban (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Antonio L\u00f3pez-pintor Alcon En los sistemas semi\u00e1ridos las especies arbustivas son interesantes desde un punto de vista [&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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