{"id":432,"date":"2021-11-24T15:29:11","date_gmt":"2021-11-24T15:29:11","guid":{"rendered":"https:\/\/natureduca.com\/docencia\/?p=432"},"modified":"2021-12-01T15:02:42","modified_gmt":"2021-12-01T15:02:42","slug":"ecologia-general-ecosistemas-2a-parte","status":"publish","type":"post","link":"https:\/\/natureduca.com\/aula\/ecologia-general-ecosistemas-2a-parte\/","title":{"rendered":"ECOLOG\u00cdA GENERAL &#8211; ECOSISTEMAS &#8211; 2\u00aa PARTE"},"content":{"rendered":"\t\t\t\t<div class=\"wp-block-uagb-table-of-contents uagb-toc__align-left uagb-toc__columns-1  uagb-block-8a4ad8d5      \"\n\t\t\t\t\tdata-scroll= \"1\"\n\t\t\t\t\tdata-offset= \"30\"\n\t\t\t\t\tstyle=\"\"\n\t\t\t\t>\n\t\t\t\t<div class=\"uagb-toc__wrap\">\n\t\t\t\t\t\t<div class=\"uagb-toc__title\">\n\t\t\t\t\t\t\tTabla de contenidos\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"uagb-toc__list-wrap \">\n\t\t\t\t\t\t<ol class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#funcionamiento-de-un-ecosistema\" class=\"uagb-toc-link__trigger\">Funcionamiento de un ecosistema<\/a><li class=\"uagb-toc__list\"><a href=\"#tipos-de-ecosistemas\" class=\"uagb-toc-link__trigger\">Tipos de ecosistemas<\/a><li class=\"uagb-toc__list\"><a href=\"#otras-definiciones-relativas-a-un-ecosistema\" class=\"uagb-toc-link__trigger\">Otras definiciones relativas a un ecosistema<\/a><ul class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#litotelma\" class=\"uagb-toc-link__trigger\">Litotelma<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#necron\" class=\"uagb-toc-link__trigger\">Necron<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#especie-vicariante\" class=\"uagb-toc-link__trigger\">Especie vicariante<\/a><\/li><\/ul><\/li><li class=\"uagb-toc__list\"><a href=\"#ecosistema-del-suelo\" class=\"uagb-toc-link__trigger\">Ecosistema del suelo<\/a><\/ul><\/ol>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\n\n\n<h2 class=\"wp-block-heading\">Funcionamiento de un ecosistema<\/h2>\n\n\n\n<p class=\"has-drop-cap\">El ecosistema funciona como un sistema pr\u00e1cticamente cerrado, sin influencias externas (el ejemplo m\u00e1s demostrativo es el de un lago). La energ\u00eda lum\u00ednica procedente del Sol es captada por los productores primarios (aut\u00f3trofos), quienes la transforman en materia org\u00e1nica, punto de partida de la cadena alimentaria (o red tr\u00f3fica); el ecosistema se equilibra cuando la producci\u00f3n de materia org\u00e1nica (biomasa) se mantiene estable (es el punto que se denomina cl\u00edmax).<\/p>\n\n\n\n<p>En principio, cuando s\u00f3lo hay organismos aut\u00f3trofos, la biomasa aumenta muy r\u00e1pidamente, hasta que aparecen los primeros herb\u00edvoros, que hacen disminuir la velocidad de producci\u00f3n de la misma; la llegada de carn\u00edvoros equilibra el consumo de materia org\u00e1nica al reducir el n\u00famero de herb\u00edvoros. Los descomponedores, presentes desde el inicio, cierran la cadena.<\/p>\n\n\n\n<p class=\"has-text-align-center\"><img title=\" \"decoding=\"async\" src=\"https:\/\/natureduca.com\/images_cienc\/carnivoros.jpg\" alt=\" \"><br>Con la aparici\u00f3n de los carn\u00edvoros se equilibra el consumo de materia org\u00e1nica, al tener un efecto directo sobre el n\u00famero de herb\u00edvoros (imagen Wikimedia Commons)<\/p>\n\n\n\n<p>En el ecosistema pueden distinguirse dos subniveles: el&nbsp;<em>fenosistema<\/em>&nbsp;que es aquella parte accesible a los sentidos, como los paisajes; y el&nbsp;<em>criptosistema<\/em>, el cual implica necesariamente una metodolog\u00eda espec\u00edfica para su conocimiento.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Tipos de ecosistemas<\/h2>\n\n\n\n<p>Aunque el t\u00e9rmino ecosistema puede referirse a biotopos y biocenosis muy diversos en tama\u00f1o, generalmente se reconocen tres tipos:&nbsp;<em>microecosistema<\/em>,&nbsp; por ejemplo el tronco de un \u00e1rbol o la fisura de una roca;&nbsp;<em>mesoecosistema<\/em>, referido a una extensi\u00f3n de media como una pradera, bosque, lago, etc.; y&nbsp;<em>macroecosistema<\/em>, donde se engloban grandes extensiones de tierras, oc\u00e9anos o ambos, como puede ser el mar Mediterr\u00e1neo o toda la regi\u00f3n atl\u00e1ntica.<\/p>\n\n\n\n<p class=\"has-text-align-center\">&nbsp;<img title=\" \"decoding=\"async\" src=\"https:\/\/natureduca.com\/images_cienc\/cienc_arbol.jpg\" alt=\" \">&nbsp;<img title=\" \"decoding=\"async\" src=\"https:\/\/natureduca.com\/images_cienc\/cienc_roca_fisura.jpg\" alt=\" \"><br>El tronco de un \u00e1rbol o la simple grieta de una roca es considerado un<em>&nbsp;microecosistema<\/em><\/p>\n\n\n\n<p>La transici\u00f3n entre dos de estos ecosistemas no suele realizarse bruscamente, sino que se produce una yuxtaposici\u00f3n en la zona lim\u00edtrofe que presenta generalmente caracter\u00edsticas propias; a esta zona se le denomina&nbsp;<em>ecotono<\/em>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Otras definiciones relativas a un ecosistema<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Litotelma<\/h3>\n\n\n\n<p>Es un biotopo de reducidas dimensiones formado por una concavidad excavada en una roca y llena con el agua de lluvia.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Necron<\/h3>\n\n\n\n<p>Es el conjunto formado por las porciones muertas de una comunidad vegetal.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Especie vicariante<\/h3>\n\n\n\n<p>Se llama as\u00ed a la especie que sustituye o reemplaza a otra dentro de un ecosistema cuando se modifican las condiciones del mismo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ecosistema del suelo<\/h2>\n\n\n\n<p>El suelo debe ser estudiado tambi\u00e9n como un ecosistema, aunque restringido, dentro de otro m\u00e1s general. Existen factores ed\u00e1ficos, es decir, propiedades f\u00edsicas y qu\u00edmicas del suelo, que tienen una acci\u00f3n sobre los seres vivos que lo habitan. Las caracter\u00edsticas f\u00edsicas se refieren a profundidad, inclinaci\u00f3n, composici\u00f3n, etc. Por su parte, las caracter\u00edsticas qu\u00edmicas est\u00e1n referidas a las materias circulantes por ese medio, tales como agua, gases, sustancias minerales y org\u00e1nicas.<\/p>\n\n\n\n<p>En el biotopo del suelo, para que se desarrolle como tal, se dan una serie de condiciones que van en funci\u00f3n de los factores clim\u00e1ticos del lugar, aunque modificados por las caracter\u00edsticas especiales del propio biotopo. Por ejemplo, a pocos metros de la superficie desaparecen las variaciones clim\u00e1ticas estacionales; conforme se profundiza se reduce la temperatura y con s\u00f3lo medio metro tambi\u00e9n desaparecen las variaciones noche\/d\u00eda.<\/p>\n\n\n\n<p class=\"has-text-align-center\"> <a href=\"https:\/\/natureduca.com\/aula\/indice-ecologia\/\"><img title=\" \"decoding=\"async\" src=\"https:\/\/natureduca.com\/logos\/1ciencia2.jpg\" alt=\" \"><br><span style=\"font-size: medium;\">\u00cdndice Ecolog\u00eda<\/span><\/a> <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Funcionamiento de un ecosistema El ecosistema funciona como un sistema pr\u00e1cticamente cerrado, sin influencias externas (el ejemplo m\u00e1s demostrativo es el de un lago). La energ\u00eda lum\u00ednica procedente del Sol es captada por los productores primarios (aut\u00f3trofos), quienes la transforman en materia org\u00e1nica, punto de partida de la cadena alimentaria&#8230;<\/p>\n<p class=\"continue-reading-button\"> <a class=\"continue-reading-link\" href=\"https:\/\/natureduca.com\/aula\/ecologia-general-ecosistemas-2a-parte\/\">Seguir leyendo&#8230;<i class=\"crycon-right-dir\"><\/i><\/a><\/p>\n","protected":false},"author":3,"featured_media":-1,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[7],"tags":[4,83,5,38],"class_list":["post-432","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ecologia","tag-ecologia","tag-ecosistemas","tag-general","tag-parte"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ECOLOG\u00cdA GENERAL - ECOSISTEMAS - 2\u00aa PARTE - Aula de Naturaleza educativa<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/natureduca.com\/aula\/ecologia-general-ecosistemas-2a-parte\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ECOLOG\u00cdA GENERAL - ECOSISTEMAS - 2\u00aa PARTE - Aula de Naturaleza educativa\" \/>\n<meta property=\"og:description\" content=\"Funcionamiento de un ecosistema El ecosistema funciona como un sistema pr\u00e1cticamente cerrado, sin influencias externas (el ejemplo m\u00e1s demostrativo es el de un lago). 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Miles de art\u00edculos enciclop\u00e9dicos sobre Naturaleza, Medioambiente y Tecnolog\u00eda","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/natureduca.com\/aula\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"es"},{"@type":"Person","@id":"https:\/\/natureduca.com\/aula\/#\/schema\/person\/4dff7f100e95d668d0ffd562d6201d35","name":"Admin","image":{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/secure.gravatar.com\/avatar\/962e63946d92c7a2d8981a0346fe0c290872fca157e819c893671264b4b499f6?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/962e63946d92c7a2d8981a0346fe0c290872fca157e819c893671264b4b499f6?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/962e63946d92c7a2d8981a0346fe0c290872fca157e819c893671264b4b499f6?s=96&d=mm&r=g","caption":"Admin"},"url":"https:\/\/natureduca.com\/aula\/author\/jefe\/"}]}},"featured_image_src":null,"featured_image_src_square":null,"author_info":{"display_name":"Admin","author_link":"https:\/\/natureduca.com\/aula\/author\/jefe\/"},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"custom":false,"gb-block-post-grid-landscape":false,"gb-block-post-grid-square":false,"post-thumbnail":false,"header":false,"slider":false,"columns":false},"uagb_author_info":{"display_name":"Admin","author_link":"https:\/\/natureduca.com\/aula\/author\/jefe\/"},"uagb_comment_info":0,"uagb_excerpt":"Funcionamiento de un ecosistema El ecosistema funciona como un sistema pr\u00e1cticamente cerrado, sin influencias externas (el ejemplo m\u00e1s demostrativo es el de un lago). La energ\u00eda lum\u00ednica procedente del Sol es captada por los productores primarios (aut\u00f3trofos), quienes la transforman en materia org\u00e1nica, punto de partida de la cadena alimentaria... 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