{"id":1038,"date":"2023-03-21T13:16:16","date_gmt":"2023-03-21T16:16:16","guid":{"rendered":"http:\/\/datamining.dc.uba.ar\/datamining\/?p=1038"},"modified":"2023-03-31T14:52:20","modified_gmt":"2023-03-31T17:52:20","slug":"defensa-de-tesis-lic-osvaldo-burastero-31-03-2023-13-hs","status":"publish","type":"post","link":"https:\/\/datamining.dc.uba.ar\/datamining\/2023\/03\/21\/defensa-de-tesis-lic-osvaldo-burastero-31-03-2023-13-hs\/","title":{"rendered":"Defensa de Tesis &#8211; Lic. Osvaldo Burastero &#8211; 31\/03\/2023 &#8211; 13 hs."},"content":{"rendered":"<p>El Viernes 31\/03 se realiz\u00f3 la Defensa de Tesis del Lic. Osvaldo Burastero titulada &#8220;Efectos de la diversidad del plancton sobre el funcionamiento del ecosistema marino&#8221;. Cont\u00f3 con la direcci\u00f3n del Dr. Federico Ibarbalz y la codirecci\u00f3n del Dr. Pedro Flombaum. Los jurados fueron la Dra. Andrea Malits, Dr. Marcelo Soria y Dra. Eva Figuerola. La defensa se realiz\u00f3 de manera online. La misma puede verse a trav\u00e9s del siguiente link: <a href=\"https:\/\/www.youtube.com\/watch?v=rdIRUhAnSXk\" target=\"_blank\" rel=\"noopener\">https:\/\/www.youtube.com\/watch?v=rdIRUhAnSXk<\/a><\/p>\n<p>Resumen:<\/p>\n<p><!--more-->Comprender la relaci\u00f3n entre la biodiversidad y la productividad de un ecosistema representa un desaf\u00edo vigente. Experimentos controlados en ecosistemas terrestres indican que, en general, la productividad primaria y la diversidad de especies vegetales se asocian de forma positiva y que ambas se ven afectadas por la disponibilidad de recursos y las condiciones ambientales. En ecosistemas oce\u00e1nicos, la biodiversidad y la productividad son determinadas por las comunidades microsc\u00f3picas del plancton.<\/p>\n<p>La estructura y din\u00e1mica del ecosistema oc\u00e9anico sumadas a las altas tasas reproductivas y de dispersi\u00f3n de sus microorganismos podr\u00edan alterar la relaci\u00f3n entre diversidad y productividad. De acuerdo a la teor\u00eda ecol\u00f3gica, los mecanismos por los cuales la productividad de un ecosistema podr\u00eda aumentar a medida que aumenta la biodiversidad son tres: complementariedad de nicho (us\u00f3 diferencial de recursos), las interacciones positivas entre especies, y el efecto de muestreo (si hay m\u00e1s especies, es m\u00e1s probable encontrar una que sea muy productiva).<\/p>\n<p>En este trabajo de Tesis se evalu\u00f3 la relaci\u00f3n biodiversidad-productividad por medio de aproximaciones observacionales, as\u00ed como los posibles mecanismos subyacentes. Para ello se utilizaron diferentes datos de la expedici\u00f3n Tara Oceans (2009-2013), la cual recolect\u00f3 datos metagen\u00f3micos y fisicoqu\u00edmicos en los oc\u00e9anos del planeta. Nuestros resultados presentan evidencia preliminar, para el grupo de los aut\u00f3trofos, de una asociaci\u00f3n significativa entre la abundancia de organismos y diversidad, y de interacciones positivas en base a la fijaci\u00f3n de nitr\u00f3geno. A su vez, nuestros an\u00e1lisis basados en diversidad funcional proveen por primera vez evidencia preliminar de complementariedad de nicho en el grupo de las bacterias heter\u00f3trofas marinas.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>El Viernes 31\/03 se realiz\u00f3 la Defensa de Tesis del [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":614,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1038","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categoria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.10 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Defensa de Tesis - Lic. 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