{"id":6083,"date":"2017-05-17T10:12:50","date_gmt":"2017-05-17T08:12:50","guid":{"rendered":"http:\/\/cienciagandia.webs.upv.es\/ca\/?p=6083"},"modified":"2017-05-17T10:12:27","modified_gmt":"2017-05-17T08:12:27","slug":"nou-sistema-de-comptatge-per-a-calcular-el-nombre-i-biomassa-de-les-tonyines-roges","status":"publish","type":"post","link":"https:\/\/cienciagandia.webs.upv.es\/ca\/2017\/05\/nou-sistema-de-comptatge-per-a-calcular-el-nombre-i-biomassa-de-les-tonyines-roges\/","title":{"rendered":"Nou sistema de comptatge per a calcular el nombre i biomassa de les tonyines roges"},"content":{"rendered":"<p>Les \u00faltimes tecnologies es posen al servei de la <strong>sostenibilitat<\/strong> de les esp\u00e8cies marines. \u00c9s el que han aconseguit investigadors de la <strong>Universitat Polit\u00e8cnica de Val\u00e8ncia<\/strong>, pertanyents a <a href=\"http:\/\/www.ai2.upv.es\/val\/\"><strong>l&#8217;Institut d&#8217;Autom\u00e0tica i Inform\u00e0tica Industrial<\/strong><\/a> (Institut Ai2) i a l&#8217;<a href=\"http:\/\/igic.webs.upv.es\/\"><strong>Institut de Recerca per a la Gesti\u00f3 Integrada de Zones Costaneres<\/strong><\/a> (IGIC) de Gandia que, juntament amb l&#8217;<a href=\"http:\/\/www.ieo.es\/ca\/home\"><strong>Institut Espa\u00f1ol d&#8217;Oceanografia<\/strong><\/a> (IEO), han desenvolupat un sistema que realitza el mesurament autom\u00e0tic de la biomassa i el comptatge de <strong>tonyines roges<\/strong> capturades per les empreses de pesca per a contribuir a la protecci\u00f3 d&#8217;aquesta esp\u00e8cie.<\/p>\n<p><!--more--><\/p>\n<p>El projecte va ser coordinat pel director del <strong><a href=\"http:\/\/www.mu.ieo.es\/\">Centre Oceanogr\u00e0fic de M\u00farcia de l&#8217;IEO<\/a> Fernando de la G\u00e1ndara<\/strong>, que ha destacat que el projecte <strong><a href=\"http:\/\/www.repositorio.ieo.es\/e-ieo\/handle\/10508\/10774?locale-attribute=ca\">BIACOP<\/a><\/strong> &#8220;ha comportat la consolidaci\u00f3 de la <a href=\"http:\/\/www.ieo.es\/ca\/unidades-mixtas\"><strong>Unitat Mixta<\/strong><\/a> (UTEM) que l&#8217;IEO i la UPV tenen constitu\u00efda per al desenvolupament de tecnologies marines&#8221;.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6087\" src=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2017\/05\/biacop-838x500.jpg\" alt=\"\" width=\"650\" height=\"388\" srcset=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2017\/05\/biacop-838x500.jpg 838w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2017\/05\/biacop-419x250.jpg 419w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2017\/05\/biacop-768x458.jpg 768w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2017\/05\/biacop-150x89.jpg 150w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2017\/05\/biacop.jpg 1680w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/p>\n<p>El sistema, dissenyat en el marc del projecte europeu, ha disminu\u00eft el marge d&#8217;error en biomassa dels actuals sistemes d&#8217;estimaci\u00f3 de les <a href=\"https:\/\/www.iccat.int\/es\/\">quotes de pesca establides<\/a>. El desenvolupament combina sistemes de mesurament ac\u00fastic per al comptatge i de visi\u00f3 estereosc\u00f2pica per a obtenir mesures 3D de les tonyines.<\/p>\n<p>LA IMPORT\u00c0NCIA DE LA TONYINA ROJA<\/p>\n<p><a href=\"http:\/\/www.upv.es\/pls\/oalu\/sic_person.Info?p_alias=vespinos&amp;P_IDIOMA=v\"><strong>V\u00edctor Espinosa<\/strong><\/a>, coordinador del grup d&#8217;ac\u00fastica submarina de l\u2019IGIC del <strong>Campus de Gandia<\/strong>, comenta que \u201del projecte t\u00e9 el seu origen en la idea plantejada per la <strong>Secretaria General de Pesca Mar\u00edtima<\/strong> al <strong>Grup Balfeg\u00f3<\/strong> per a resoldre el greu problema de la quantificaci\u00f3 del nombre i la biomassa de tonyines en les transfer\u00e8ncies\u201d.<\/p>\n<p><a href=\"http:\/\/www.upv.es\/pls\/oalu\/sic_person.Info?p_alias=gandreu&amp;P_IDIOMA=v\"><strong>Gabriela Andreu<\/strong><\/a>, investigadora de l&#8217;Institut Ai2, comenta que \u201cla tonyina roja est\u00e0 molt valorada a tot el m\u00f3n, especialment a <strong>Jap\u00f3<\/strong>. Les tonyines s\u00f3n capturades en alta mar i introdu\u00efdes en g\u00e0bies de transport, que s\u00f3n remolcades fins a zones costaneres en les quals estan instal\u00b7lades les g\u00e0bies d\u2019engreix. All\u00ed es realitza la <strong>transfer\u00e8ncia de tonyines<\/strong> d&#8217;unes g\u00e0bies a unes altres. Cada empresa t\u00e9 assignat un nombre de vaixells i, cada vaixell, una quantitat de tonyines que pot pescar. La idea \u00e9s que solament es capture i es transferisca a les g\u00e0bies d\u2019engreix la <strong>quantitat de tonyina roja autoritzada<\/strong>\u201d, explica la investigadora.<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/Q8mjb3dEhT0\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>Fins ara, el comptatge de tonyines durant la transfer\u00e8ncia des de les g\u00e0bies de c\u00e8rcol a les g\u00e0bies d\u2019engreix el realitzava un operari amb un programari b\u00e0sic i de manera manual. \u201cA\u00e7\u00f2 feia que <strong>els marges d&#8217;error foren m\u00e9s alts<\/strong> i que es produ\u00efren sobre o subestimacions en moltes ocasions, especialment perqu\u00e8 les imatges tamb\u00e9 reportaven situacions de baixa visibilitat per a l&#8217;operari\u201d, comenta Andreu.<\/p>\n<p>FUNCIONAMENT DEL NOU SISTEMA<\/p>\n<p>Per a realitzar els mesuraments, es va construir una instal\u00b7laci\u00f3 fabricada amb materials similars als de les granges marines, que es va instal\u00b7lar entre les dues g\u00e0bies. Durant la transfer\u00e8ncia de tonyines, el sistema de mesura de c\u00e0meres estereosc\u00f2piques desenvolupat per l&#8217;Institut Ai2-UPV <strong>filmava els peixos<\/strong>, reportant mesures 3D de talles; i un sistema de cortina ac\u00fastica basat en una eco-sonda cient\u00edfica i un transductor ultras\u00f2nic, dissenyat per l\u2019IGIC, recollia, al seu torn, <strong>informaci\u00f3 del ress\u00f2 dels peixos<\/strong>, facilitant el comptatge. Amb els resultats obtinguts es van desenvolupar sengles programaris que van donar com a resultat comptatges amb un <strong>marge d&#8217;encert del 95%<\/strong> i estimacions de biomassa molt m\u00e9s precises que les obtingudes amb els mesuraments tradicionals.<\/p>\n<p>Els participants en el projecte BIACOP, que va concloure a la fi del 2016, confien a seguir avan\u00e7ant i aconseguir la millora de tots els sistemes i equips i desenvolupar un programari completament comercial.<\/p>\n<p><iframe loading=\"lazy\" style=\"border: 1px solid #CCC; border-width: 1px; margin-bottom: 5px; max-width: 100%;\" src=\"\/\/www.slideshare.net\/slideshow\/embed_code\/key\/f6JgjJiSueo6Ao\" width=\"595\" height=\"485\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" allowfullscreen=\"allowfullscreen\"> <\/iframe><\/p>\n<p><strong><a title=\"Proyecto BIACOP: estimaci\u00f3n de biomasa en jaulas de at\u00fan rojo con m\u00e9todos ac\u00fasticos y \u00f3pticos \" href=\"\/\/www.slideshare.net\/CampusGandiaUPV\/proyecto-biacop-estimacin-de-biomasa-en-jaulas-de-atn-rojo-con-mtodos-acsticos-y-pticos-75672107\" target=\"_blank\" rel=\"noopener noreferrer\">Projecte BIACOP<\/a><\/strong><\/p>\n<p><iframe loading=\"lazy\" id=\"audio_18716539\" style=\"border: 1px solid #EEE; box-sizing: border-box; width: 100%;\" src=\"https:\/\/www.ivoox.com\/player_ej_18716539_4_1.html?c1=ff6600\" width=\"300\" height=\"200\" frameborder=\"0\" scrolling=\"no\" allowfullscreen=\"allowfullscreen\"><\/iframe>;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les \u00faltimes tecnologies es posen al servei de la sostenibilitat de les esp\u00e8cies marines. \u00c9s el que han aconseguit investigadors de la Universitat Polit\u00e8cnica de &#8230; <a title=\"Nou sistema de comptatge per a calcular el nombre i biomassa de les tonyines roges\" class=\"read-more\" href=\"https:\/\/cienciagandia.webs.upv.es\/ca\/2017\/05\/nou-sistema-de-comptatge-per-a-calcular-el-nombre-i-biomassa-de-les-tonyines-roges\/\" aria-label=\"Read more about Nou sistema de comptatge per a calcular el nombre i biomassa de les tonyines roges\">Llegir m\u00e9s<\/a><\/p>\n","protected":false},"author":15,"featured_media":6082,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[252],"tags":[706,255],"class_list":["post-6083","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia","tag-destacat-ca","tag-destacat-en-en","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nou sistema de comptatge per a calcular el nombre i biomassa de les tonyines roges<\/title>\n<meta name=\"description\" content=\"El sistema podria implantar-se en 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