{"id":24152,"date":"2025-11-03T15:47:12","date_gmt":"2025-11-03T14:47:12","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=24152"},"modified":"2025-11-04T09:52:54","modified_gmt":"2025-11-04T08:52:54","slug":"sense-decebre-la-riera-els-bitxos-rars-de-lisabel-de-villena","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/sense-decebre-la-riera-els-bitxos-rars-de-lisabel-de-villena\/","title":{"rendered":"Sense decebre la riera: els &#8220;bitxos&#8221; rars de l&#8217;Isabel de Villena"},"content":{"rendered":"<p>Avui dilluns 3 de novembre de 2025 l\u2019alumnat de 2n d\u2019ESO de l\u2019<a href=\"https:\/\/www.villena.cat\/\">Escola Isabel de Villena<\/a> d&#8217;Esplugues s\u2019ha despla\u00e7at fins al <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/\">CdA Can Santoi<\/a>\u00a0per avaluar l\u2019<a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/dinamica-dels-ecosistemes\/estudi-ecologic-de-la-riera-de-vallvidrera\/\" target=\"_blank\" rel=\"noopener\">estat ecol\u00f2gic de la riera de Vallvidrera.<\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-24159 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/11\/1762178246652.jpg\" alt=\"\" width=\"224\" height=\"300\" \/><\/p>\n<p>En primer lloc, han participat en una pluja d\u2019idees on han exposat quines serien algunes de les caracter\u00edstiques de la riera que caldria estudiar per con\u00e8ixer el seu estat de salut. Han ent\u00e8s que, per avaluar aquest ecosistema, cal analitzar tant els factors ambientals com els \u00e9ssers vius que hi trobem. Els par\u00e0metres fisicoqu\u00edmics constitueixen el bi\u00f2top, mentre que la biodiversitat s\u2019anomena biocenosi. De fet, han descobert que existeix un \u00edndex bi\u00f2tic basat \u00fanicament en la pres\u00e8ncia de macroinvertebrats per determinar la qualitat de l\u2019aigua. Seguidament, s\u2019han dividit en 6 grups de treball i han revisat tot el material necessari per dur a terme el seu estudi.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-24162\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/11\/1762178246682.jpg\" alt=\"\" width=\"300\" height=\"224\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Un cop a la riera, els diferents grups han anotat un seguit de dades com la temperatura de l\u2019aire i de l\u2019aigua, l\u2019amplada, la fond\u00e0ria, la velocitat del corrent, el color i l\u2019olor de l\u2019aigua de la riera. Despr\u00e9s s\u2019han fixat en els arbres i plantes que formen el bosc de ribera en aquest tram i han concl\u00f2s el seu estudi capturant una bona mostra d\u2019invertebrats aqu\u00e0tics amb l\u2019ajuda dels salabrets i els pinzells: cargols de fang, barretets, gambetes d\u2019aigua dol\u00e7a, sabaters, larves de mosca negra, nimfes d\u2019espiadimonis i fins i tot ef\u00edmeres!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-24158 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/11\/1762178246698.jpg\" alt=\"\" width=\"300\" height=\"224\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Per \u00faltim, han tornat al laboratori del Camp d\u2019Aprenentatge per tal d\u2019identificar els animalons amb l\u2019ajut de lupes binoculars i fitxes de suport. Fins i tot han vist com emergia l&#8217;adult d&#8217;una ef\u00edmera en directe! Amb tot aix\u00f2 han pogut avaluar la qualitat de l\u2019aigua de la riera de Vallvidrera i s\u2019han sorpr\u00e8s en obtenir una \u201cqualitat mediocre\u201d quan l&#8217;aigua feia molt bona pinta aparentment. Arrel d\u2019aquestes conclusions han reflexionat sobre el nostre impacte en aquest i altres ecosistemes conscienciant-se de la import\u00e0ncia de mantenir-los nets.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-24160 aligncenter\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/11\/1762178246623.jpg\" alt=\"\" width=\"224\" height=\"300\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Per acabar, han tornat a alliberar sans i estalvis tots els animals capturats al seu h\u00e0bitat, on seguiran el seu cicle de vida.\u00a0Felicitats per la feina realitzada, us esperem aviat!<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-24161 aligncenter\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2025\/11\/1762178246638.jpg\" alt=\"\" width=\"224\" height=\"300\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Avui dilluns 3 de novembre de 2025 l\u2019alumnat de 2n d\u2019ESO de l\u2019Escola Isabel de Villena d&#8217;Esplugues s\u2019ha despla\u00e7at fins al CdA Can Santoi\u00a0per avaluar l\u2019estat ecol\u00f2gic de la riera de Vallvidrera. En primer lloc, han participat en una pluja d\u2019idees on han exposat quines serien algunes de les caracter\u00edstiques de la riera que caldria [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":24161,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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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