![\"23\"](\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2016\/05\/23.jpg\")
<\/a>Abans d\u2019esmorzar han fet hip\u00f2tesis de les condicions mediambientals en cada vessant i del tipus de plantes que ens trobariem. Tamb\u00e9 han predit quina seria la millor manera de dur a terme la recollida de dades i el material que necessitar\u00edem per fer-ho.<\/p>\nDespr\u00e9s d\u2019esmorzar han agafat motxilles i suports i han anat plegats fins al pont de la Siberia on s\u2019han separat: els grups 1, 2 i 3 han anat cap el vessant de solell i els grups 4, 5 i 6 cap el vessant d\u2019obaga.<\/p>\n
Un cop a cada vessant se\u2019ls ha explicat la millor manera de recollir dades i el funcionament de cada instrument:<\/p>\n
\u2013 El term\u00f2metre ha d\u2019estar a un metre del terra i no li pot tocar el Sol.
\n\u2013 En l\u2019anem\u00f2metre cal posar-nos en posici\u00f3 de \u201cl\u2019Est\u00e0tua de la Llibertat\u201d i pressionar el bot\u00f3 vermell quan les cassoletes es mouen a m\u00e9s velocitat. Tamb\u00e9 cal tenir en compte d\u2019escollir les unitats adequades.
\n\u2013 Al psicr\u00f2metre cal mullar primer la veta i despr\u00e9s moure\u2019l com si fos una matraca; al cap d\u2019un minut fer la difer\u00e8ncia entre la temperatura del term\u00f2metre en sec i l\u2019humit i amb l\u2019ajuda d\u2019una taula calcular la humitat relativa.
\n\u2013 El lux\u00f2metre, cal evitar orientar-lo directament al Sol. Encendre\u2019l, seleccionar el rang adequat de mesura\u00a0i fixar la dada amb la tecla \u201chold\u201d.
\n\u2013 Amb la br\u00faixola cal encarar-se a la baixada per saber\u00a0l\u2019orientaci\u00f3 del vessant onens trobem.<\/p>\n
La segona part ha consistit en fer un estudi de la vegetaci\u00f3 dels vessants: en una Despr\u00e9s han tornat al laboratori on han compartit les dades i\u00a0han\u00a0verificat les hip\u00f2tesis inicials. Amb les mostres de fulles que han recollit, han comprovat quines plantes de cada vessant contenen m\u00e9s aigua pesant-les abans i despr\u00e9s de dessecar-les en un forn a 110\u00baC (com no donava temps de fer-ho tot el mateix dia els grups pesaven les mostres de fulles seques dels grups del dia anterior). Tamb\u00e9 han esbrinat\u00a0 que les comunitats de cada vessant corresponen \u00a0a l’alzinar litoral amb roure cerrioide (la vessant de l’obaga) i \u00a0la brolla d’estepes (la vessant de solell).<\/p>\n El programari que han utilitzat per a fer aquesta activitat ha estat elaborat per l\u2019equip docent de Can Santoi i es troba disponible al web:<\/p>\n \u2013 Programa (excel) per a fer l\u2019inventari de la vegetaci\u00f3 dels vessants<\/a>. Han estat uns grups molt treballadors i valents, ja que tot i la pluja d’algun dia han realitzat l’activitat.<\/p>\n Fins la propera !<\/p>\n","protected":false},"excerpt":{"rendered":" Els dies 9,10, 11 i 12 de maig els alumnes de 1r d\u2019ESO de l\u2019Institut Mart\u00ed Dot de Sant Feliu de Llobregat han realitzat un estudi de les condicions ambientals i de la vegetaci\u00f3 dels vessants de solell i obaga en una zona de Collserola: la vall de la riera de Vallvidrera, a la Rierada. […]<\/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":[265],"tags":[],"class_list":["post-4065","post","type-post","status-publish","format-standard","hentry","category-visites"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/4065","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=4065"}],"version-history":[{"count":1,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/4065\/revisions"}],"predecessor-version":[{"id":8483,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/4065\/revisions\/8483"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media?parent=4065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/categories?post=4065"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/tags?post=4065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<\/a> parcel\u00b7la d\u2019uns 100 m2 seleccionem les 10 plantes m\u00e9s significatives i les identifiquem i descrivim, especialment pel que fa a les seves caracter\u00edstiques morfol\u00f2giques d\u2019adaptaci\u00f3 al medi. Tamb\u00e9 quantifiquem la seva abund\u00e0ncia.<\/p>\n
\n\u2013 Programa (excel) per a calcular el contingut d\u2019aigua a les fulles<\/a>
\n\u2013 Programa (flash) per a fer perfils de vegetaci\u00f3<\/a><\/p>\n