Global change is causing the melting of ice masses, permafrost thawing, and the shrinking of glaciers, thereby reshaping nature's rhythms. Longer thaw phases and more frequent dry periods are transforming water-driven transitional ecosystems (e.g., glacier-fed streams) in the Polar-Alpine biome. This shift risks replacing unique, specialist species with more generalist ones, leading to “biotic homogenization”—a loss of diversity that reduces ecosystems' adaptability to change. While more species may be present at local levels, this often comes at the expense of the critical roles that specialists play. These changes disrupt nature's balance and the provision of vital ecosystem services.

中文翻译：

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通过极地-阿尔卑斯山生物群落中水驱动的生态和生物地球化学走廊（断开）连接地球


全球变化正在导致冰块融化、永久冻土融化和冰川萎缩，从而重塑大自然的节奏。更长的融化阶段和更频繁的干旱期正在改变极地-阿尔卑斯山生物群落中水驱动的过渡生态系统（例如，冰川补给的溪流）。这种转变有可能用更通用的物种取代独特的专业物种，从而导致“生物同质化”——多样性的丧失会降低生态系统对变化的适应能力。虽然地方层面可能存在更多的物种，但这往往是以牺牲专家所发挥的关键作用为代价的。这些变化破坏了自然的平衡和重要生态系统服务的提供。