Tundra-breeding birds face diverse conservation challenges, from accelerated rates of Arctic climate change to threats associated with highly migratory life histories. Here we summarise the status and trends of Arctic terrestrial birds (88 species, 228 subspecies or distinct flyway populations) across guilds/regions, derived from published sources, raw data or, in rare cases, expert opinion. We report long-term trends in vital rates (survival, reproduction) for the handful of species and regions for which these are available. Over half of all circumpolar Arctic wader taxa are declining (51% of 91 taxa with known trends) and almost half of all waterfowl are increasing (49% of 61 taxa); these opposing trends have fostered a shift in community composition in some locations. Declines were least prevalent in the African-Eurasian Flyway (29%), but similarly prevalent in the remaining three global flyways (44–54%). Widespread, and in some cases accelerating, declines underscore the urgent conservation needs faced by many Arctic terrestrial bird species.

中文翻译：

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整个极地北极的苔原鸟的状况和趋势。

苔原育种鸟类面临着各种各样的保护挑战，从北极气候变化的加剧到与高度迁徙的生活史相关的威胁。在这里，我们总结公会/地区中北极陆生鸟类（88种，228个亚种或不同的飞行种群）的现状和趋势，这些信息来自已公开的资料，原始数据，或者在极少数情况下，来自专家的意见。我们报告了少数几个可用物种的生命率（存活率，繁殖率）的长期趋势。在所有北极极地圈涉水类群中，有一半以上在下降（91种趋势已知的类群中有51％），而在几乎所有水禽中，有一半在增加（61种类群中的49％）；这些相反的趋势促使某些地区的社区组成发生了变化。在非洲-欧亚航线中，下降最不普遍（29％），但在其余三个全球航道（44-54％）中同样普遍。广泛的下降（在某些情况下还在加速）说明了许多北极陆生鸟类所面临的紧急保护需求。