The effects of contemporary climate, habitat heterogeneity, and long-term climate change on species richness are well studied for woody plants in forest ecosystems, but poorly understood for herbaceous plants, especially in alpine-arctic ecosystems. Here, we aim to test if the previously proposed hypothesis based on the richness-environment relationship could explain the variation in richness patterns of the typical alpine-arctic herbaceous genus Saxifraga.

中文翻译：

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全北高山草本虎耳草物种丰富度的全球格局：温度和生境异质性的作用

当代气候、栖息地异质性和长期气候变化对森林生态系统中木本植物物种丰富度的影响得到了很好的研究，但对草本植物，尤其是高寒-北极生态系统中的草本植物知之甚少。在这里，我们旨在测试先前提出的基于丰富度-环境关系的假设是否可以解释典型的高山-北极草本植物虎耳草属的丰富度模式的变化。