{"id":16408,"date":"2023-01-18T21:42:21","date_gmt":"2023-01-18T20:42:21","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/?p=16408"},"modified":"2023-01-18T21:43:34","modified_gmt":"2023-01-18T20:43:34","slug":"estudiant-a-fons-la-riera-de-vallvidrera","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/general\/estudiant-a-fons-la-riera-de-vallvidrera\/","title":{"rendered":"Estudiant a fons la riera de Vallvidrera"},"content":{"rendered":"<p>Dimecres 18 de gener hem rebut la visita de l\u2019alumnat de 1r de Batxillerat de l\u2019<strong>Institut<\/strong> <strong>Francesc Ferrer i Gu\u00e0rdia <\/strong>de Sant Joan Desp\u00ed 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-16417 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/01\/IMG_20230118_185110-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/01\/IMG_20230118_185110.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/01\/IMG_20230118_185110-150x150.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.<\/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,\u00a0 espiadimonis, cargols aqu\u00e0tics, plan\u00e0ries i fins i tot una sangonera i un nedador d&#8217;esquena<img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-16418\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2023\/01\/IMG_20230118_133559.jpg\" alt=\"\" width=\"300\" height=\"287\" \/><\/p>\n<p>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 podran determinar la qualitat de l\u2019aigua de la riera. Totes les dades recollides formaran part de la campanya d&#8217;inspecci\u00f3 del <a href=\"http:\/\/www.projecterius.cat\/front\" target=\"_blank\" rel=\"noopener\">Projecte Rius<\/a>.<\/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>Dimecres 18 de gener hem rebut la visita de l\u2019alumnat de 1r de Batxillerat de l\u2019Institut Francesc Ferrer i Gu\u00e0rdia de Sant Joan Desp\u00ed 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 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":16416,"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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