{"id":4536,"date":"2016-11-25T14:45:11","date_gmt":"2016-11-25T13:45:11","guid":{"rendered":"http:\/\/blocs.xtec.cat\/cdacansantoi\/?p=4536"},"modified":"2016-11-25T14:45:11","modified_gmt":"2016-11-25T13:45:11","slug":"estdi-de-la-riera-de-vallvidrera-a-la-tardor","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/visites\/estdi-de-la-riera-de-vallvidrera-a-la-tardor\/","title":{"rendered":"Estudi de la riera de Vallvidrera a la tardor"},"content":{"rendered":"<p style=\"text-align: justify;\">Els dies 24 i 25\u00a0de novembre\u00a0els alumnes de 1r d&#8217;ESO de l&#8217;Institut Llu\u00eds Vives de Barcelona\u00a0han portat a terme aquesta activitat d&#8217;ecologia de camp.<br \/>\n<a href=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2016\/11\/IMG_8259.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4540\" src=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2016\/11\/IMG_8259-300x225.jpg\" alt=\"img_8259\" width=\"294\" height=\"224\" \/><\/a>Han comen\u00e7at amb una petita introducci\u00f3 de situaci\u00f3 i explicaci\u00f3 del material. Un cop a la riera n&#8217;han fet una descripci\u00f3 i, ja per grups, han mesurat la temperatura de l&#8217;aigua i la de l&#8217;aire que en aquesta \u00e8poca de l&#8217;any curiosament l&#8217;aigua est\u00e0\u00a0uns graus m\u00e9s calenta que l&#8217;aire. Amb un pot de vidre han olorat l&#8217;aigua, han mirat la seva transpar\u00e8ncia i han comprovat si feia escuma. Amb una cinta m\u00e8trica, un flex\u00f2metre, un tap de suro i un cron\u00f2metre han pres dades per calcular despr\u00e9s la velocitat i el cabal de la riera.<br \/>\nA continuaci\u00f3 han identificat els vegetals que viuen dins i al voltant de la riera i els han assenyalat tot especificant si eren al\u00b7l\u00f2ctons o aut\u00f2ctons.<br \/>\nLa recollida dels invertebrats i vertebrats que viuen a la riera ha estat for\u00e7a b\u00e9 i entre els dos\u00a0dies han trobat for\u00e7a esp\u00e8cies diferents: nimfes d&#8217;ef\u00edmeres, espiadimonis i lib\u00e8l\u00b7lules, gambetes d&#8217;aigua dol\u00e7a, larves de mosca negra i d\u00edxids, sabaters, barretets, limnees i peixos barbs cua-roja.<br \/>\nUn cop a l&#8217;aula, la identificaci\u00f3 dels animals ha estat\u00a0for\u00e7a \u00e0gil ja que coneixien molt b\u00e9 el maneig de la lupa binocular. Un dels dies fins i tot van viure en directe la metamorfosi\u00a0d&#8217;una de les ef\u00edmeres en animal aeri i que abans d&#8217;alliberar\u00a0vam poder observar-la tots a la lupa connectada al projector.<br \/>\nLa suma dels \u00edndexs bi\u00f2tics de contaminaci\u00f3 dels invertebrats ens han revelat una vegada m\u00e9s la qualitat mediocre de la riera.<br \/>\n<a href=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2016\/11\/IMG_8266.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4542 size-medium\" src=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2016\/11\/IMG_8266-300x225.jpg\" alt=\"img_8266\" width=\"300\" height=\"225\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2016\/11\/IMG_8266-300x225.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2016\/11\/IMG_8266-200x150.jpg 200w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2016\/11\/IMG_8266.jpg 320w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a> Despr\u00e9s han tornat \u00a0els animalons capturats\u00a0a la riera, fent parar a l&#8217;autob\u00fas prop del restaurant Castellv\u00ed que \u00e9s per on hi ha una acc\u00e9s a la riera.<\/p>\n<p style=\"text-align: justify;\">De tornada a l&#8217;Institut encara els queda feina per fer:\u00a0<a href=\"http:\/\/www.xtec.cat\/cda-cansantoi\/Cabalsec2.xls\">calcular el cabal de la riera<\/a>, completar el quadre amb les caracter\u00edstiques de cada animal i elaborar conclusions generals sobre l&#8217;estat de salut de la riera.<\/p>\n<p style=\"text-align: justify;\">Fins a la propera!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Els dies 24 i 25\u00a0de novembre\u00a0els alumnes de 1r d&#8217;ESO de l&#8217;Institut Llu\u00eds Vives de Barcelona\u00a0han portat a terme aquesta activitat d&#8217;ecologia de camp. Han comen\u00e7at amb una petita introducci\u00f3 de situaci\u00f3 i explicaci\u00f3 del material. Un cop a la riera n&#8217;han fet una descripci\u00f3 i, ja per grups, han mesurat la temperatura de l&#8217;aigua [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"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":"","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[288,265],"tags":[],"class_list":["post-4536","post","type-post","status-publish","format-standard","hentry","category-ecosistemes","category-visites"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/4536","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/comments?post=4536"}],"version-history":[{"count":0,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/4536\/revisions"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media?parent=4536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/categories?post=4536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/tags?post=4536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}