Habitat-scale ecological data for the <em>Adiantum pedatum</em> complex in northeastern North America

Species arising from hybridization are shaped by a different set of evolutionary mechanisms than species arising from divergence, providing a valuable opportunity to broaden our understanding of ecological niche evolution and conservatism. We focused on the ecology of hybridization within the North American members of the&nbsp;Adiantum pedatum complex (Pteridaceae), a clade of maidenhair ferns; in the northeast portion of its range, the clade includes the diploid species A. pedatum and&nbsp;A. aleuticum as well as their allotetraploid hybrid&nbsp;A. viridimontanum. Adiantum pedatum commonly occurs in rich woods across eastern North America, whereas A. viridimontanum and A. aleuticum (only in the eastern North American portion of its range) are restricted in distribution to the northern portion of a narrow belt of ultramafic and serpentinite bedrock scattered along the Appalachian mountains. As the fine-scale component of a broader effort to characterize the realized ecological niche of&..., , # Habitat-scale ecological data for the *Adiantum pedatum* complex in northeastern North America Dataset DOI: [10.5061/dryad.1c59zw473](10.5061/dryad.1c59zw473) ## Description of the data and file structure These data were collected to characterize the habitat-scale ecological niche of the allopolyploid maidenhair fern *Adiantum viridimontanum* relative to its progenitors. ### Files and variables #### File: AdiantumData_FL2023_Dryad.ods **Description:** 105 observations of 42 (mostly quantitative and abiotic) ecological variables collected from survey plots established at occurrences of *Adiantum* in northeastern North America. Columns 1–10 = identifying information; Columns 10–29 = ecological data collected *in situ*; Columns 29–52 = edaphic variables measured from analysis by the University of Vermont Agricultural and Experimental Testing Laboratory. Coordinate locations for the serpentine maidenhair ferns *A. viridimontanum* and *A. aleuticum* have been omitted due to the rarit...,由杂交起源的物种所受的进化调控机制与分化起源的物种存在显著差异，这为我们拓展对生态位（ecological niche）演化及其保守性的认知提供了宝贵契机。本研究聚焦于北美掌叶铁线蕨复合群（Adiantum pedatum complex，凤尾蕨科Pteridaceae）——一类铁线蕨属（Adiantum）植物——内部的杂交生态；在该类群分布区的东北部，其包含二倍体物种掌叶铁线蕨（A. pedatum）、阿留申铁线蕨（A. aleuticum）及其异源四倍体杂种（allotetraploid hybrid）绿山铁线蕨（A. viridimontanum）。 掌叶铁线蕨广泛分布于北美东部的肥沃林地中，而绿山铁线蕨与阿留申铁线蕨（仅见于其分布区的北美东部部分）的分布范围仅局限于沿阿巴拉契亚山脉（Appalachian Mountains）零散分布的超镁铁质岩（ultramafic rock）与蛇纹岩床基（serpentinite bedrock）窄带的北部区域。本数据集作为一项旨在表征[原文此处内容缺失]实际生态位的整体研究的精细尺度组成部分，聚焦北美东北部掌叶铁线蕨复合群的生境尺度生态数据。 数据集DOI：10.5061/dryad.1c59zw473 ## 数据与文件结构说明 本数据集采集的目的是表征异源多倍体（allopolyploid）铁线蕨——绿山铁线蕨（Adiantum viridimontanum）——相对于其亲本物种的生境尺度生态位。 ### 文件与变量 #### 文件：AdiantumData_FL2023_Dryad.ods **数据说明**：本数据采集自北美东北部铁线蕨属植物分布点的野外样地，共包含105条观测记录，对应42项（以定量非生物因子为主）生态变量。其中第1-10列为标识信息；第10-29列为原位（in situ）采集的生态数据；第29-52列为经佛蒙特大学农业与实验测试实验室（University of Vermont Agricultural and Experimental Testing Laboratory）分析得到的土壤理化变量（edaphic variables）。鉴于蛇纹岩生境铁线蕨类（绿山铁线蕨与阿留申铁线蕨）的稀有性，其坐标点位已予以隐去……