{"id":37502,"date":"1998-01-01T00:00:00","date_gmt":"1998-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estructura-y-produccion-de-pastos-en-el-alto-pirineo-occidental\/"},"modified":"1998-01-01T00:00:00","modified_gmt":"1998-01-01T00:00:00","slug":"estructura-y-produccion-de-pastos-en-el-alto-pirineo-occidental","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/estructura-y-produccion-de-pastos-en-el-alto-pirineo-occidental\/","title":{"rendered":"Estructura y produccion de pastos en el alto pirineo occidental."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Remon Aldabe Jos\u00e9 Luis <\/strong><\/h2>\n<p>Se estudian los efectos que producen los factores altitud y ocupaci\u00f3n pastoral sobre los pastos supraforestales (entre 1600 y 2400 m) en los valles de a\u00edsa y borau (huesca, espa\u00f1a) situados en el pirineo occidental. La ocupaci\u00f3n pastoral se determina mediante el volumen de excrementos (cm3) y el consumo (g\/m2) medidos durante el periodo vegetativo. Las parcelas experimentales se han situado en las principales comunidades de pastos:  mesobromion erecti, nardion strictae (incluye mosaicos con primulion intricatae) y comunidades de festuca eskia y festuca paniculata.  las respuestas que se producen en los pastos se estudian a nivel a\u00e9reo sobre (1) las caracter\u00edsticas estructurales de la vegetaci\u00f3n: cobertura vegetal verde, altura de la vegetaci\u00f3n, relaci\u00f3n materia verde\/materia seca, relaci\u00f3n monocotiled\u00f3neas\/ dicotiled\u00f3neas, n\u00famero de especies, \u00edndice de diversidad de shannon-weaver e \u00edndice de equitabilidad de pielou y sobre (2) la interacci\u00f3n entre la estructura de la vegetaci\u00f3n y la utilizaci\u00f3n que de la misma hacen los herb\u00edvoros en t\u00e9rminos de biomasa m\u00e1xima (g\/m2) y de producci\u00f3n primaria (g\/m2). La diversidad disminuye con la altitud aunque algunas comunidades situadas a elevadas altitudes pueden tener diversidades tan altas como las que se localizan en el l\u00edmite inferior del nivel supraforestal. El consumo tiende a ser mayor en las comunidades m\u00e1s diversas y en las de mayor cobertura vegetal. La producci\u00f3n primaria y el consumo disminuyen con la altitud. El volumen de excrementos es un buen indicador del consumo y ambos indicadores de la ocupaci\u00f3n pastoral aumentan en los pastos m\u00e1s productivos. El mantillo tiene tendencia a disminuir cuando la ocupaci\u00f3n pastoral aumenta.  las respuestas que se estudian a nivel subterr\u00e1neo son sobre el ph, la relaci\u00f3n carbono\/nitr\u00f3geno (c\/n), la fitomasa subterr\u00e1nea de ra\u00edces (g\/m2) y la descomposici\u00f3n de la celulosa (mg\/g\/d\u00eda) como principal componente d<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estructura y produccion de pastos en el alto pirineo occidental.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estructura y produccion de pastos en el alto pirineo occidental. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Remon Aldabe Jos\u00e9 Luis <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Navarra<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1998<\/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>Juan Puigdef\u00e1bregas Tom\u00e1s<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Manuel Sanchez Diaz <\/li>\n<li>Alicia Ederra Indurain (vocal)<\/li>\n<li>Bernardo Alvera Garcia-quiros (vocal)<\/li>\n<li> Del Barrio Escribano Gabriel (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Remon Aldabe Jos\u00e9 Luis Se estudian los efectos que producen los factores altitud y ocupaci\u00f3n pastoral sobre [&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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