{"id":42108,"date":"2025-12-01T08:14:34","date_gmt":"2025-12-01T07:14:34","guid":{"rendered":"https:\/\/deepseareporter.dev.phosdev.se\/?p=42108"},"modified":"2025-12-01T08:17:47","modified_gmt":"2025-12-01T07:17:47","slug":"forskarnas-metod-att-rakna-fisk-fungerar-inte","status":"publish","type":"post","link":"https:\/\/deepseareporter.dev.phosdev.se\/sv\/forskarnas-metod-att-rakna-fisk-fungerar-inte\/","title":{"rendered":"Forskarnas metod att r\u00e4kna fisk fungerar inte"},"content":{"rendered":"\n<p><strong>Internationella havsforskningsr\u00e5det ICES \u00e4r den organisation som ger vetenskaplig r\u00e5dgivning till EU n\u00e4r de beslutar om hur mycket man ska f\u00e5 fiska varje \u00e5r.&nbsp;<\/strong><a href=\"https:\/\/eur06.safelinks.protection.outlook.com\/?url=https%3A%2F%2Facademic.oup.com%2Ficesjms%2Farticle%2F82%2F11%2Ffsaf204%2F8327677%3Flogin%3Dfalse&amp;data=05%7C02%7Clena%40deepsea.se%7Cbbe09f8b2db64186143e08de2e8985ad%7C4d78919231f44e13af35386c6622fbe1%7C0%7C0%7C638999365348063124%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&amp;sdata=xGWkmHDkjE0KE%2FBKeBt9py8wJyYME3jz6LuFcouHrhA%3D&amp;reserved=0\"><strong>En ny studie<\/strong><\/a><strong>&nbsp;fr\u00e5n ICES visar att s\u00e4ttet de r\u00e4knar p\u00e5 kan ge r\u00e5dgivning som inneb\u00e4r att risken f\u00f6r ett f\u00f6r h\u00f6gt fisketryck \u00e4r st\u00f6rre \u00e4n man tidigare trott.&nbsp;<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center\"><sup>Text: Arvid Wiclander Mellgren<\/sup><\/p>\n\n\n\n<p>Studien har j\u00e4mf\u00f6rt ICES:s utr\u00e4kningsmodell med en mer noggrann modell f\u00f6r att se hur tr\u00e4ffs\u00e4ker den nuvarande modellen \u00e4r. Resultatet visar att den nuvarande modellen ger en st\u00f6rre fiskerid\u00f6dlighet \u00e4n vad den noggrannare metoden ger. Forskarna konstaterar allts\u00e5 att ICES:s r\u00e5dgivning till EU generellt \u00e4r f\u00f6r of\u00f6rsiktig och kan resultera i ett f\u00f6r h\u00f6gt fisketryck p\u00e5 l\u00e5ng sikt. Massimiliano Cardinale \u00e4r en av de forskare som ligger bakom studien.<\/p>\n\n\n\n<p>&#8211; Den nuvarande modellen \u00e4r mindre f\u00f6rsiktig. Den till\u00e5ter en h\u00f6gre fiskerid\u00f6dlighet \u00e4n om man tittar mer noggrant med den nyare modellen, s\u00e4ger Massimiliano Cardinale till Deep Sea Reporter.<\/p>\n\n\n\n<p>I tre av de fyra best\u00e5nden som forskarna unders\u00f6kt var skillnaden mellan v\u00e4rdena man fick ut dessutom ganska stor. Massimiliano Cardinale menar att man skulle se liknande resultat om man gjorde j\u00e4mf\u00f6relsen p\u00e5 andra best\u00e5nd. ICES:s utr\u00e4kningsmodell som anv\u00e4nds idag orsakar allts\u00e5 generellt att man fiskar mer \u00e4n vad man borde g\u00f6ra.<\/p>\n\n\n\n<p>Forskarna bakom studien menar att borde byta ut ICES:s nuvarande utr\u00e4kningsmodell mot en med st\u00f6rre precision. N\u00e5got som enligt Massimiliano Cardinale, redan planeras.<\/p>\n\n\n\n<p>&#8211; Processen f\u00f6r ett byte \u00e4r redan i g\u00e5ng. Vi m\u00e5ste g\u00f6ra n\u00e5got snabbt, vi kan inte v\u00e4nta. Jag gissar att den (nya modellen, reds anm) kommer i g\u00e5ng redan n\u00e4sta \u00e5r, s\u00e4ger han.<\/p>\n\n\n\n<p>Dessutom har de redan anv\u00e4nt den mer komplexa modellen f\u00f6r tre best\u00e5nd, str\u00f6mmingen i centrala \u00d6stersj\u00f6n och Bottenhavet samt f\u00f6r Nordhavsr\u00e4kan. Fiskekvoterna som best\u00e4mdes f\u00f6r de best\u00e5nden tidigare i \u00e5r var allts\u00e5 mer noggrant utr\u00e4knade \u00e4n om man hade anv\u00e4nt ICES:s standardmodell. Massimiliano Cardinale sj\u00e4lv jobbade n\u00e4mligen med det vetenskapliga underlaget f\u00f6r de best\u00e5nden, och s\u00e5g till att man anv\u00e4nde den nya modellen.<\/p>\n\n\n\n<p>&#8211; Jag var emot att anv\u00e4nda EQSIM (ICES:s standardmodell, reds anm) redan fr\u00e5n b\u00f6rjan, s\u00e4ger han.<\/p>\n\n\n\n<p>Studien visar ocks\u00e5 att fisket skulle bli mer l\u00f6nsamt i det l\u00e5nga loppet med en l\u00e4gre fiskerid\u00f6dlighet \u00e4n vad man i nul\u00e4get har som m\u00e5l, trots att kvoterna p\u00e5 kort sikt skulle minska.<\/p>\n\n\n\n<p>&#8211; Best\u00e5nden skulle bli st\u00f6rre, fisket skulle f\u00e5 ut ungef\u00e4r lika mycket i det l\u00e5nga loppet, och dessutom med mindre anstr\u00e4ngning. D\u00e4rtill skulle fiskerierna sl\u00e4ppa ut mindre koldioxid. Alla tj\u00e4nar p\u00e5 det, avslutar forskaren.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-text-color has-link-color wp-elements-ca3bc75ee612da6d7b88037c191b23f6\" style=\"color:#4b545c\"><sup><strong>Om Deep Sea Reporter<\/strong>:<strong> <\/strong>V\u00e5r ambition \u00e4r att granska och skildra fr\u00e5gor som r\u00f6r havet och det liv som finns under ytan. Vi verkar i allm\u00e4nhetens tj\u00e4nst och drivs sj\u00e4lvst\u00e4ndigt i f\u00f6rh\u00e5llande till politiska, kommersiella och andra intressen i samh\u00e4llet.<\/sup><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Internationella havsforskningsr\u00e5det ICES \u00e4r den organisation som ger vetenskaplig r\u00e5dgivning till EU n\u00e4r de beslutar om hur mycket man ska f\u00e5 fiska varje \u00e5r.\u00a0En ny studie\u00a0fr\u00e5n ICES visar att s\u00e4ttet de r\u00e4knar p\u00e5 kan ge r\u00e5dgivning som inneb\u00e4r att risken f\u00f6r ett f\u00f6r h\u00f6gt fisketryck \u00e4r st\u00f6rre \u00e4n man tidigare trott.\u00a0<\/p>\n","protected":false},"author":4,"featured_media":41624,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[235,252],"tags":[1093,1189,1442,726,587],"class_list":["post-42108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fiske","category-forskning","tag-fiskekvoter","tag-ices-2","tag-overfiske-2","tag-sill","tag-stromming"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.0) - 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