The Murray–Darling Basin (MDB) is Australia’s food bowl, contributing 40% of agricultural production and supporting a population of over 4 million people. Historically, the MDB supported a unique native fish community with significant cultural, subsistence, recreational, commercial and ecological values. Approximately one-quarter of the MDB’s native species are endemic. Changes to river flows and habitats have led to a >90% decline in native fish populations over the past 150 years, with almost half the species now of conservation concern. Commercial fisheries have collapsed, and important traditional cultural practices of First Nations People have been weakened. The past 20 years have seen significant advances in the scientific understanding of native fish ecology, the effects of human-related activities and the recovery measures needed. The science is well established, and some robust restoration-enabling policies have been initiated to underpin actions. What is now required is the political vision and commitment to support investment to drive long-term recovery. We present a summary of 30 priority activities urgently needed to restore MDB native fishes.

中文翻译：

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恢复澳大利亚本地鱼类需要什么

墨累-达令盆地 (MDB) 是澳大利亚的食物碗，贡献了 40% 的农业产量，并支持超过 400 万人口。从历史上看，MDB 支持具有重要文化、生存、娱乐、商业和生态价值的独特本地鱼类群落。大约四分之一的 MDB 本地物种是地方性的。在过去的 150 年里，河流流量和栖息地的变化导致本地鱼类种群减少了 90% 以上，现在几乎有一半的物种受到保护。商业渔业崩溃，原住民重要的传统文化习俗被削弱。过去 20 年来，在对本地鱼类生态学、人类相关活动的影响和所需恢复措施的科学理解方面取得了重大进展。科学已经确立，并且已经启动了一些强有力的促进恢复的政策来支持行动。现在需要的是支持投资以推动长期复苏的政治愿景和承诺。我们总结了恢复 MDB 本地鱼类急需的 30 项优先活动。