Tabula rasa in the Patagonian Channels II: The cushion peat bog species Astelia pumila (Asteliaceae) and Donatia fascicularis (Stylidiaceae) survived the last glacial in south‐central Chile
Tabula rasa in the Patagonian Channels II: The cushion peat bog species Astelia pumila (Asteliaceae) and Donatia fascicularis (Stylidiaceae) survived the last glacial in south‐central Chile
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DOI：
10.1111/jbi.13562
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发表时间：
2019-04
影响因子：
3.9
通讯作者：
S. Pfanzelt;P. Šarhanová;D. Albach;K. Bernhard Hagen
中科院分区：
文献类型：
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作者：
S. Pfanzelt;P. Šarhanová;D. Albach;K. Bernhard Hagen
巴塔哥尼亚海峡的植物群落地理数据很少，广泛的第四纪冰川如何影响该地区的主要植被成分，即垫泥炭沼泽（麦哲伦高沼地）的种群动态在很大程度上是未知的。冰河时代的冰川是否消灭了所有的陆生植物，或者一些种群是否在原地生存，目前尚不清楚。我们重建了两个主要的巴塔哥尼亚垫泥炭沼泽物种，Astelia pumila（G. Forst.）高迪（紫菀科）和束状多纳提（Donatia fascicularis J. R. Forst.）& G.Forst.（柱花草科），以检验（a）智利中南部高沼地植物的冰川避难所假说和（B）巴塔哥尼亚海峡的白板情景。将检索到的沼泽地理模式与先前报道的另一种垫状泥炭沼泽物种的地理模式进行了比较（Pfanzelt等人，分子生态学26，4027-4044），目的是提供一个更广泛的图片如何西巴塔哥尼亚高沼地植物对第四纪冰期的反应。
Plant phylogeographic data from the Patagonian Channels are scant and it is largely unknown how the extensive Quaternary glaciations affected the population dynamics of the region's major vegetation component, that is cushion peat bogs (Magellanic moorland). Whether ice‐age glaciers wiped out all terrestrial plant life or whether some populations persisted in situ remains unclear. We reconstructed the phylogeography of two dominant Patagonian cushion peat bog species, Astelia pumila (G.Forst.) Gaudich. (Asteliaceae) and Donatia fascicularis J.R.Forst. & G.Forst. (Stylidiaceae), to test (a) the hypothesis of a glacial refugium for moorland plants in south‐central Chile and (b) the tabula rasa scenario for the Patagonian Channels. The retrieved phylogeographic patterns were compared with those reported previously for a further cushion peat bog species (Pfanzelt et al., Molecular Ecology 26, 4027–4044), with the objective to provide a broader picture of how West Patagonian moorland plants responded to the Quaternary ice‐ages.