Warmer springs increase potential for temporal reproductive isolation among habitat patches in subalpine flowering plants
Warmer springs increase potential for temporal reproductive isolation among habitat patches in subalpine flowering plants
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DOI：
10.1111/1365-2745.14175
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发表时间：
2023-08-14
影响因子：
5.5
通讯作者：
Forrest，Jessica R. K.
中科院分区：
文献类型：
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作者：
Rivest，Sebastien;Inouye，Brian D. D.;Forrest，Jessica R. K.
开花物候可以有很大的差异，即使在精细的空间尺度，可能导致时间繁殖栖息地之间的隔离补丁。如果不同微生境中的植物对气候变化的物候反应不同，气候变化可能会改变开花的同步性，从而改变时间隔离。尽管时间隔离的重要性，在确定模式的基因流，因此人口的遗传结构和当地的适应，很少有人知道气候变化如何影响时间隔离内population. There，我们使用开花物候和花的丰富度数据的50个亚高山植物物种超过44年来测试是否时间隔离栖息地补丁之间的春季温度的影响。对于每一个物种和年份，我们分析了时间间隔在开花高峰期和开花重叠栖息地之间的补丁分开5-950米。在我们的研究物种，温暖的春天与更多的时间分化开花高峰栖息地之间的补丁，和开花重叠少，增加人口内的时间隔离的潜力。通过减少附近栖息地斑块中植物之间的交配机会，我们的研究结果表明，温暖的春天可能会减少种群内基因流动的机会，因此，植物种群适应环境变化的能力。
Flowering phenology can vary considerably even at fine spatial scales, potentially leading to temporal reproductive isolation among habitat patches. Climate change could alter flowering synchrony, and hence temporal isolation, if plants in different microhabitats vary in their phenological response to climate change. Despite the importance of temporal isolation in determining patterns of gene flow, and hence population genetic structure and local adaptation, little is known about how changes in climate affect temporal isolation within populations.Here, we use flowering phenology and floral abundance data of 50 subalpine plant species over 44 years to test whether temporal isolation between habitat patches is affected by spring temperature. For each species and year, we analysed temporal separation in peak flowering and flowering overlap between habitat patches separated by 5–950 m.Across our study species, warmer springs were associated with more temporal differentiation in flowering peaks among habitat patches, and less flowering overlap, increasing potential for temporal isolation within populations.Synthesis. By reducing opportunities for mating among plants in nearby habitat patches, our results suggest that warmer springs may reduce opportunities for gene flow within populations, and, consequently, the capacity of plant populations to adapt to environmental changes.