{"id":9680,"date":"2021-02-19T16:14:44","date_gmt":"2021-02-19T15:14:44","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/?p=9680"},"modified":"2021-02-21T10:21:07","modified_gmt":"2021-02-21T09:21:07","slug":"cens-anual-de-merla-daigua-a-barruera","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/general\/cens-anual-de-merla-daigua-a-barruera\/","title":{"rendered":"Cens anual de merla d&#8217;aigua a Barruera"},"content":{"rendered":"<p><a href=\"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-content\/uploads\/usu1369\/2021\/02\/20210216123121_IMG_1067.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-9681 size-medium alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-content\/uploads\/usu1369\/2021\/02\/20210216123121_IMG_1067-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-content\/uploads\/usu1369\/2021\/02\/20210216123121_IMG_1067-300x225.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-content\/uploads\/usu1369\/2021\/02\/20210216123121_IMG_1067-768x576.jpg 768w, https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-content\/uploads\/usu1369\/2021\/02\/20210216123121_IMG_1067-1024x768.jpg 1024w, https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-content\/uploads\/usu1369\/2021\/02\/20210216123121_IMG_1067-200x150.jpg 200w, https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-content\/uploads\/usu1369\/2021\/02\/20210216123121_IMG_1067.jpg 1440w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Passejar aquests dies d\u2019hivern per la Noguera de Tor t\u00e9 un atractiu addicional. Ja de bon mat\u00ed \u00e9s f\u00e0cil d\u2019observar un ocellet fosc i rabassut per\u00f2 amb el pit ben blanc i lluent que delata la seva pres\u00e8ncia, parat a sobre d\u2019algun roca o volant arran l\u2019aigua. \u00c9s la merla d\u2019aigua (<em>Cinclus cinclus<\/em>), que s\u2019afana en guarnir el seu niu amb molses i fullaraca que troba aqu\u00ed i all\u00e0.<\/p>\n<p>Es tracta d\u2019un ocell que viu associat a l\u2019aigua, on captura l\u2019aliment capbussant-se, nedant i, sorprenentment, caminant per la llera, sota l\u2019aigua. Remena per sota de les pedres per trobar les larves de tric\u00f2pters, cole\u00f2pters i altres insectes aqu\u00e0tics que li valdran d\u2019aliment.<\/p>\n<p>Aquesta \u00e9s una esp\u00e8cie considerada bioindicadora, ja que t\u00e9 uns requeriments ecol\u00f2gics molt espec\u00edfics, i, per tant, la seva poblaci\u00f3 \u00e9s f\u00e0cilment pertorbable. El seu h\u00e0bitat s\u00f3n els rius i torrents d&#8217;aig\u00fces r\u00e0pides, ben oxigenades i netes d&#8217;alta muntanya o muntanya mitjana. Necessita aig\u00fces poc profundes i de llit roc\u00f3s, ja que \u00e9s sota d&#8217;aquests c\u00f2dols on viu el seu aliment. Prefereix els cursos d&#8217;aigua de fort pendent. Tot i que aqu\u00ed a Barruera no es compleix aquesta darrera condici\u00f3, sembla que la resta de factors que condicionen el seu h\u00e0bitat s&#8217;acompleix sobradament, doncs \u00e9s f\u00e0cil d&#8217;observar.<\/p>\n<p>Des del Camp d&#8217;Aprenentatge de la Vall de Bo\u00ed vam iniciar fa uns anys un estudi per con\u00e8ixer la seva poblaci\u00f3 al riu Noguera de Tor al seu pas per Barruera. Realitzem el cens les primeres setmanes de gener, aprofitant que les merles d\u2019aigua es troben en per\u00edode d\u2019aparellament i es preparen per fer la posta. Els comportaments i vols nupcials delaten la seva pres\u00e8ncia i s\u00f3n f\u00e0cilment identificables els diferents territoris que existeixen al riu. Aquest any ens ha sorpr\u00e8s la quantitat de territoris que hem aconseguit diferenciar: fins a 4 territoris per quil\u00f2metre de riu en el tram estudiat! Una gran not\u00edcia que parla molt b\u00e9 de la salut actual de la Noguera de Tor, a pesar els pas del riu per l\u2019entorn de Barruera es troba molt alterat per l\u2019acci\u00f3 de l\u2019home. A principis d&#8217;abril farem la segona passada per concretar el n\u00famero de parelles reproductores.<\/p>\n<p>Seguirem l\u2019evoluci\u00f3 futura de la poblaci\u00f3 de merla d\u2019aigua.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Passejar aquests dies d\u2019hivern per la Noguera de Tor t\u00e9 un atractiu addicional. Ja de bon mat\u00ed \u00e9s f\u00e0cil d\u2019observar [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9681,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":[1,29],"tags":[],"class_list":["post-9680","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/posts\/9680","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/comments?post=9680"}],"version-history":[{"count":3,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/posts\/9680\/revisions"}],"predecessor-version":[{"id":9696,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/posts\/9680\/revisions\/9696"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/media\/9681"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/media?parent=9680"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/categories?post=9680"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-valldeboi\/wp-json\/wp\/v2\/tags?post=9680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}