中國從2020年開始，在長江展開為期十年的 #全流域禁捕 大動作！分類、分階段的漁業禁捕，以復育流域內的魚類種群🐟💦

然而，禁捕恐怕無法完全解決 #洄游魚類 所面對的威脅，#棲地破碎化 同時也是造成數量急劇減少的幫兇之一。而「生態調度」這一手，成了最後的關鍵希望⋯⋯

#長江 #白鱘 #瀕危物種
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長江的生物完整指數達「無魚」等級，國家重點保護的中華匙吻鱘亦宣布滅絕後，政府決定禁漁十年。長江過去曾嘗試每年三個月禁漁，但每次解禁後資源都會在數天內被打撈盡。中華匙吻鱘早於1970年代因過分捕漁而急劇下降，再加上水壩工程及污染等破壞，於1993年已被定為功能性絕種，即沒足夠數量持續繁殖。2003年建三峽大壩後更導致牠們無發迴游產卵繁殖。

The bio-integrity index of the Yangtze River has reached the "no fish" level, and with the extinction of the Chinese paddlefish, commercial fishing is now banned for ten years. There was an annual fishing ban for three months every spring, but as soon as it ended, fishermen would empty the river in just a few days of time. the number of Chinese paddlefish started to decrease since 1970s because of overfishing; with other damages like dam constructions and pollution, they became functionally extinct in 1993, which means there were not enough fish to meaningfully reproduce. The situation has gone worse in 2003 when the Three Gorges Dam cut off their path to reach their only spawning ground upstream.

又一物種消失！長江白鱘滅絕
近日，國際學術期刊《整體環境科學》發佈的研究顯示，預計在2005至2010年，“中國淡水魚之王”長江白鱘已滅絕，科研人員自2003年以來沒有再發現過白鱘。白鱀豚、長江鰣魚此前已被宣佈功能性滅絕，中國特有的中華鱘、長江鱘目前仍被評爲“極危”等級。