{"id":6619,"date":"2026-10-08T13:30:13","date_gmt":"2026-10-08T11:30:13","guid":{"rendered":"https:\/\/laube.mobi\/?p=6619"},"modified":"2026-10-08T15:04:22","modified_gmt":"2026-10-08T13:04:22","slug":"prospeccio-de-canya-autoctona","status":"publish","type":"post","link":"https:\/\/laube.mobi\/es\/prospeccio-de-canya-autoctona\/","title":{"rendered":"Prospecci\u00f3 i conservaci\u00f3 de la canya aut\u00f2ctona (Arundo micrantha) a les vores de l&#8217;Ebre entre la desembocadura del riu Siurana i l&#8217;illa d&#8217;Aud\u00ed"},"content":{"rendered":"<p dir=\"ltr\">L&#8217;Associaci\u00f3 L&#8217;Aube ha dut a terme, per enc\u00e0rrec de la Direcci\u00f3 General de Pol\u00edtiques Ambientals i Medi Natural, un projecte per con\u00e8ixer i conservar la canya aut\u00f2ctona (<em>Arundo micrantha<\/em>) a les vores de l&#8217;Ebre, entre la desembocadura del riu Siurana i l&#8217;Illa d&#8217;Aud\u00ed.<\/p>\n<p dir=\"ltr\"><strong>Una esp\u00e8cie desconeguda i sense protecci\u00f3<\/strong><\/p>\n<p dir=\"ltr\">Els canyars fluvials s&#8217;associen sovint a la canya ex\u00f2tica invasora (<em>Arundo donax<\/em>), per\u00f2 a la pen\u00ednsula Ib\u00e8rica tamb\u00e9 hi creix una canya aut\u00f2ctona del mateix g\u00e8nere. Durant anys s&#8217;havia identificat com a <em>Arundo plinii<\/em>, fins que els estudis taxon\u00f2mics van establir que les poblacions ib\u00e8riques corresponen a <em>A. micrantha<\/em>. Aquesta confusi\u00f3, i la seva semblan\u00e7a amb la canya invasora i amb el cany\u00eds, ha fet que pass\u00e9s desapercebuda. Avui no t\u00e9 cap figura de protecci\u00f3 ni consta al Cat\u00e0leg de flora amena\u00e7ada de Catalunya, tot i estar en regressi\u00f3 a la Mediterr\u00e0nia occidental. A m\u00e9s, les actuacions de control de la canya invasora rarament distingeixen entre les dues esp\u00e8cies, amb el risc d&#8217;eliminar-ne poblacions aut\u00f2ctones.<\/p>\n<p dir=\"ltr\"><strong>Qu\u00e8 s&#8217;ha fet<\/strong><\/p>\n<ul dir=\"ltr\">\n<li><strong>Prospecci\u00f3 del tram:<\/strong> dos t\u00e8cnics han recorregut tot el sector per terra, amb vehicle i a peu, i tamb\u00e9 amb embarcaci\u00f3, cosa que ha perm\u00e8s accedir a illes fluvials, marges i talussos poc visibles des de terra. Tots els punts confirmats s&#8217;han georeferenciat amb Mergin Maps i s&#8217;han integrat en un SIG (QGIS).<\/li>\n<li><strong>Control de la canya ex\u00f2tica a M\u00f3ra la Nova:<\/strong> en uns 2 km de l&#8217;itinerari fluvial s&#8217;han desbrossat els rodals m\u00e9s densos d&#8217;<em>A. donax<\/em>, gestionant els residus per evitar-ne la propagaci\u00f3 riu avall. Als espais alliberats s&#8217;hi han plantat aubes, salzes blancs i alocs, i s&#8217;han programat tasques peri\u00f2diques de manteniment fins que la vegetaci\u00f3 aut\u00f2ctona assoleixi prou cobertura.<\/li>\n<li><strong>Conservaci\u00f3 de la canya aut\u00f2ctona:<\/strong> els rodals d&#8217;<em>A. micrantha<\/em> de M\u00f3ra la Nova s&#8217;han perimetrat amb desbrossat perqu\u00e8 no quedin ofegats per esbarzers, heura o la mateixa canya ex\u00f2tica, i s&#8217;hi han plantat rizomes en un punt de l&#8217;itinerari pr\u00e8viament alliberat de canya invasora. L&#8217;acord de cust\u00f2dia del territori amb l&#8217;Ajuntament de M\u00f3ra la Nova \u00e9s una eina clau per preservar aquests rodals.<\/li>\n<\/ul>\n<p dir=\"ltr\"><strong>Resultats<\/strong><\/p>\n<p dir=\"ltr\">La prospecci\u00f3 ha localitzat <strong>58 rodals<\/strong> d&#8217;<em>Arundo micrantha<\/em>, 33 dels quals entre Benifallet i Tivenys. Apareixen tant en marges de dif\u00edcil acc\u00e9s com a prop de camins i camps de conreu, sense un patr\u00f3 d&#8217;h\u00e0bitat clar. Aquesta primera cartografia \u00e9s una base de refer\u00e8ncia que pot donar suport a la futura inclusi\u00f3 de l&#8217;esp\u00e8cie al Cat\u00e0leg de Flora Amena\u00e7ada de Catalunya.<\/p>\n<p dir=\"ltr\">A M\u00f3ra la Nova, el seguiment bot\u00e0nic indica una restauraci\u00f3 favorable en la majoria dels punts tractats i una evoluci\u00f3 positiva dels rodals aut\u00f2ctons intervinguts.<\/p>\n<p dir=\"ltr\"><strong>Recomanaci\u00f3<\/strong><\/p>\n<p dir=\"ltr\">De cara a futures actuacions de control de canya en espais fluvials, L&#8217;Aube recomana fer sempre un mostreig previ d&#8217;<em>A. micrantha<\/em> per evitar-ne l&#8217;eliminaci\u00f3 accidental, i continuar recopilant dades de pres\u00e8ncia per avan\u00e7ar, si escau, en la seva protecci\u00f3 legal.<\/p>","protected":false},"excerpt":{"rendered":"<p>L&#8217;Associaci\u00f3 L&#8217;Aube ha dut a terme, per enc\u00e0rrec de la  [&#8230;]<\/p>\n","protected":false},"author":3,"featured_media":5798,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6619","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - 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