{"id":81749,"date":"2018-03-10T00:05:41","date_gmt":"2018-03-10T00:05:41","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/chrysophycean-cysts-from-the-pyreness-and-their-applicability-as-palaeoenvironmental-indicators\/"},"modified":"2018-03-10T00:05:41","modified_gmt":"2018-03-10T00:05:41","slug":"chrysophycean-cysts-from-the-pyreness-and-their-applicability-as-palaeoenvironmental-indicators","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-tierra-y-del-espacio\/chrysophycean-cysts-from-the-pyreness-and-their-applicability-as-palaeoenvironmental-indicators\/","title":{"rendered":"Chrysophycean cysts from the pyreness and their applicability as palaeoenvironmental indicators"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Sergi Pla Rabes <\/strong><\/h2>\n<p>El presente trabajo se basa en el estudio de 105 lagos de los pirineos centrales. Donde se muestreo el sedimento superficial y se analizo el quimismo del agua. A partir de las muestras de sedimento se describieron 210 morfotipos de estomatocistos de crisoficeas.  posteriormente fueron identificadas las variables ambientales que mas explican la distribucion de los estomatocistos en los lagos pirenaicos. Estas variables como la alcalinidad, el ph, el potasio y el nitrato son las que potencialmente pueden ser reconstruidas. Otras variables que influyen indirectamente fueron la altitud y la geolog\u00eda de la roca donde esta localizado el lago.  a partir de estas variables se desarrollaron funciones de transferencia para inferir los cambios de estas a lo largo del holoceno. Estas funciones fueron la temperatura, la alcalinidad, el ph, el magnesio y el nitrato. con ellas se recontruyeron los valores absolutos de dichos parametros durante el holoceno. Otra aproximaci\u00f3n fue la reconstruccion, sin obtener valores absolutos, de la pluviometria y la desnitrifacion durante el holoceno. el testimonio de sedimento utilizado fue extraido del estany redo (2240 m.S.N.M) situado en el vall d\u00c2\u00bfaran (lleida). Para reforzar los resultados obtenidos con los estomatocistos tambien se utiliz\u00f3 tanto las diatomeas como el registro pol\u00ednico del testigo extraido.  finalmente se identificaron dos periodos de importantes cambios. El primero hacia los 8000 a\u00f1os calibrados con una caida brusca de temperatura y precipitacion seguida de un aumento progresivo de ambos parametros. El segundo cambio importante fue el que marco el final del optimo clim\u00e1tico durante el cual temperatura como precipitacion fueron superiores. Este final del periodo acontece hacia los 5000 a\u00f1os calibrados con una caida brusca en la precipitacion. el inicio de este periodo mas seco marcaria el final del optimo climatico el cual mas debido a un cambio en la precipitacion que ha un cambio en la<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Chrysophycean cysts from the pyreness and their applicability as palaeoenvironmental indicators<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Chrysophycean cysts from the pyreness and their applicability as palaeoenvironmental indicators <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Sergi Pla Rabes <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 17\/12\/1999<\/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>Jordi Catal\u00e1n Aguila<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: david Serrat congost <\/li>\n<li>aldo Marchetto (vocal)<\/li>\n<li>p. Smol john (vocal)<\/li>\n<li>ramon Perez obiol (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Sergi Pla Rabes El presente trabajo se basa en el estudio de 105 lagos de los pirineos [&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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[951,494,27,4329,8598,1666,54236,6793,4328,2600],"tags":[174277,446,14035,174278,50873,174276],"class_list":["post-81749","post","type-post","status-publish","format-standard","hentry","category-barcelona","category-ciencias-agrarias","category-ciencias-de-la-tierra-y-del-espacio","category-climatologia","category-hidrobiologia","category-hidrologia","category-influencias-del-habitat","category-limnologia","category-paleoclimatologia","category-peces-y-fauna-silvestre","tag-aldo-marchetto","tag-david-serrat-congost","tag-jordi-catalan-aguila","tag-p-smol-john","tag-ramon-perez-obiol","tag-sergi-pla-rabes"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/81749","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=81749"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/81749\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=81749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=81749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=81749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}