Contrasting patterns of phylogenetic diversity and alpine specialization across the alpine flora of the American mountain range system
Contrasting patterns of phylogenetic diversity and alpine specialization across the alpine flora of the American mountain range system
复制标题
美国山脉系统高山植物群系统发育多样性和高山专业化的对比模式
DOI：
10.1007/s00035-021-00261-y
复制
发表时间：
2021
期刊：
影响因子：
2.7
通讯作者：
Soltis, Pamela S.
中科院分区：
文献类型：
--
作者：
Figueroa, Hector Fox;Marx, Hannah E.;de Souza Cortez, Maria Beatriz;Grady, Charles J.;Engle-Wrye, Nicholas J.;Beach, Jim;Stewart, Aimee;Folk, Ryan A.;Soltis, Douglas E.;Soltis, Pamela S.
尽管山区栖息地对全球生物多样性做出了重大贡献，但人们对跨多个山脉的高山物种分布的生物地理模式知之甚少。在这里，我们对北美、中美和南美山区系统的高山种子植物谱系的分布和系统发育亲缘关系进行了详细分析。使用以持续有价值的方式描述美国种子植物海拔生态位的大型数据集，我们将植物谱系占据的高山栖息地比例与其在区域尺度上的生物地理分布联系起来，并将这些结果置于系统发育背景中。我们发现安第斯山脉中部和北美西部的高山物种多样性最大，而系统发育多样性较低的组合包含高山专业化程度较高的物种。特别是，近北极/北方高山群落的特点是系统发育多样性低和高山专业化程度较高，而巴塔哥尼亚南部群落的情况恰恰相反。这些结果表明，在这些气候相似的地区，仅靠非生物过滤不太可能解释高山群落的聚集。然而，高山专家总体上相对稀有，以及这些专家与山地血统关系最密切的趋势表明，过滤仍然是塑造高山群落结构的一个重要因素。这项工作证实了对“历史过滤”辩论轴进行细致入微且与规模相关的观点的重要性，因为这两个因素都可能促成了在美洲高山植物群落中观察到的现代生物多样性模式。
Although mountainous habitats contribute substantially to global biodiversity, comparatively little is known about biogeographic patterns of distributions of alpine species across multiple mountain ranges. Here, we present a detailed analysis of the distributions and phylogenetic affinities of alpine seed plant lineages across North, Central, and South American mountain systems. Using a large dataset that characterizes the elevational niches of American seed plants in a continuously valued way, we related the proportion of alpine habitat occupied by plant lineages to their biogeographic distributions at a regional scale and place these results in a phylogenetic context. We found alpine species diversity to be greatest in the central Andes and western North America, and that assemblages with lower phylogenetic diversity contained species with a greater degree of alpine specialization. In particular, near-Arctic/boreal alpine communities were characterized by low phylogenetic diversity and higher degrees of alpine specialization, whereas the opposite was observed for southern Patagonian communities. These results suggest that abiotic filtering alone in these climatically similar regions is unlikely to explain alpine community assembly. Nevertheless, the overall relative rarity of alpine specialists, and the tendency for such specialists to be most closely related to montane lineages, suggested that filtering was still an important factor in shaping alpine community structure. This work corroborates the importance of a nuanced and scale-dependent perspective on the ‘history-filtering’ debate axis, as both factors have likely contributed to modern biodiversity patterns observed in alpine plant communities across the Americas.
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影响因子：
4.6
作者：
Bagheri A;Maassoumi AA;Rahiminejad MR;Brassac J;Blattner FR
通讯作者：
Blattner FR
影响因子：
3.9
作者：
Dupin, Julia;Matzke, Nicholas J.;Smith, Stacey D.
通讯作者：
Smith, Stacey D.
洪堡的《画面体格》重温
DOI：
--
发表时间：
2019
影响因子：
11.1
作者：
P. Moret;Priscilla Muriel;Ricardo Jaramillo;Olivier Dangles
通讯作者：
Olivier Dangles
影响因子：
1.9
作者：
I. Al‐Shehbaz
通讯作者：
I. Al‐Shehbaz
DOI：
10.1002/joc.5086
发表时间：
2017-10-01
期刊：
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子：
--
作者：
Fick, Stephen E.;Hijmans, Robert J.
通讯作者：
Hijmans, Robert J.