{"id":16725,"date":"2023-02-21T16:58:58","date_gmt":"2023-02-21T15:58:58","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=16725"},"modified":"2023-02-21T16:58:58","modified_gmt":"2023-02-21T15:58:58","slug":"linstitut-joan-brossa-investiga-la-riera-de-vallvidrera","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/linstitut-joan-brossa-investiga-la-riera-de-vallvidrera\/","title":{"rendered":"L&#8217;institut Joan Brossa investiga la riera de Vallvidrera"},"content":{"rendered":"<p>Dimarts 21 de febrer hem rebut la visita de l\u2019alumnat de Biologia de 1r de Batxillerat de l\u2019<a href=\"http:\/\/www.institutjoanbrossa.cat\/\" target=\"_blank\" rel=\"noopener\"><strong>Institut<\/strong> <strong>Joan Brossa <\/strong><\/a>de Barcelona per fer un <a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/ambits\/dinamica-dels-ecosistemes\/introduccio-a-la-limnologia-cursos-fluvials\/\" target=\"_blank\" rel=\"noopener noreferrer\">estudi limnol\u00f2gic de la Riera de Vallvidrera<\/a> a la Rierada (Molins de Rei).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-16729 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/02\/IMG_20230221_155214-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/02\/IMG_20230221_155214.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/02\/IMG_20230221_155214-150x150.jpg 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Primer han contextualitzat l\u2019\u00e0rea a estudiar calculant la superf\u00edcie de la conca hidrogr\u00e0fica i esbrinant de quins materials geol\u00f2gics est\u00e0 formada. Despr\u00e9s s\u2019han organitzat en equips de treball i han revisat el material necessari per dur a terme l\u2019estudi de camp, tant els par\u00e0metres fisicoqu\u00edmics (bi\u00f2top) com els referents a la biodiversitat (biocenosi), per poder determinar la qualitat de l\u2019aigua de la riera. Han posat especial inter\u00e8s en estudiar la vegetaci\u00f3 pr\u00f2pia del bosc de ribera com a part del seu projecte eTwinning.<\/p>\n<p>Un cop a la riera, concretament a la zona de Can Preci\u00f3s, han recollit les dades per equips (coordenades, temperatures, fond\u00e0ria, velocitat, transpar\u00e8ncia, olor, granulometria&#8230;) i han agafat mostres d\u2019aigua per completar l\u2019an\u00e0lisi al laboratori. Tamb\u00e9 han valorat l\u2019estat de conservaci\u00f3 de la vegetaci\u00f3 del bosc de ribera seguint el protocol QRSI. I finalment s\u2019han dedicat a capturar macroinvertebrats aqu\u00e0tics que posteriorment han fet servir com a bioindicadors. Tot i ser una \u00e8poca poc favorable per ser ple hivern, han aconseguit atrapar una bona diversitat d\u2019organismes com ef\u00edmeres, gambetes d&#8217;aigua dol\u00e7a, espiadimonis, cargols aqu\u00e0tics, plan\u00e0ries, sabaters i fins i tot un barb cua roja.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-16732\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/02\/IMG_0390.jpg\" alt=\"\" width=\"300\" height=\"254\" \/>Al laboratori han\u00a0 calculat par\u00e0metres com la duresa, conductivitat, mineralitzaci\u00f3, concentraci\u00f3 de nitrits i fosfats, pH i oxigen dissolt amb l\u2019ajuda dels kits de valoraci\u00f3 del <a href=\"http:\/\/www.projecterius.cat\/front\" target=\"_blank\" rel=\"noopener noreferrer\">Projecte Rius<\/a>.<\/p>\n<p>Han estudiat els macroinvertebrats capturats amb l\u2019ajut de lupes binoculars i fitxes identificatives.\u00a0 Amb tota aquesta informaci\u00f3 fisicoqu\u00edmica i biol\u00f2gica han pogut determinar la qualitat de l\u2019aigua de la riera.<\/p>\n<p>Per acabar s\u2019han tornat a alliberar sans i estalvis tots els animals capturats al seu h\u00e0bitat, on seguiran el seu cicle de vida!<\/p>\n<p>Felicitats pel gran treball que han completat.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dimarts 21 de febrer hem rebut la visita de l\u2019alumnat de Biologia de 1r de Batxillerat de l\u2019Institut Joan Brossa de Barcelona per fer un estudi limnol\u00f2gic de la Riera de Vallvidrera a la Rierada (Molins de Rei). Primer han contextualitzat l\u2019\u00e0rea a estudiar calculant la superf\u00edcie de la conca hidrogr\u00e0fica i esbrinant de quins [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":16730,"comment_status":"open","ping_status":"closed","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":"","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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