植物生态学报 ›› 2018, Vol. 42 ›› Issue (10): 990-999.doi: 10.17521/cjpe.2018.0101

• 研究论文 • 上一篇    下一篇

外来种-本地种亲缘关系对外来植物归化和入侵的影响

郑珊珊,陈旭波,许微楠,骆争荣(),夏更寿   

  1. 丽水学院生态学院, 浙江丽水 323000
  • 收稿日期:2018-05-04 出版日期:2018-10-20 发布日期:2019-01-30
  • 通讯作者: 骆争荣 E-mail:extra@lsu.edu.cn
  • 基金资助:
    浙江省自然科学基金(LY14C030003);浙江省自然科学基金(LY18C020002)

Effects of exotic-native species relationship on naturalization and invasion of exotic plant species

ZHENG Shan-Shan,CHEN Xu-Bo,XU Wei-Nan,LUO Zheng-Rong(),XIA Geng-Shou   

  1. College of Ecology, Lishui University, Lishui, Zhejiang 323000, China
  • Received:2018-05-04 Online:2018-10-20 Published:2019-01-30
  • Contact: Zheng-Rong LUO E-mail:extra@lsu.edu.cn
  • Supported by:
    Supported by the Zhejiang Provincial Natural Science Foundation of China(LY14C030003);Supported by the Zhejiang Provincial Natural Science Foundation of China(LY18C020002)

摘要:

达尔文归化难题描述了外来种-本地种亲缘关系促进(预适应假说)或阻止(达尔文归化假说)外来种成功入侵的悖论。目前, 在中国仍缺少针对达尔文归化难题的研究。为系统研究外来种-本地种亲缘关系对中国外来植物入侵的影响, 该文利用线性混合效应模型从省级、市级和群落3个空间尺度以及归化、扩散和入侵3个阶段探究了外来种-本地种谱系距离和外来植物表现的关系。结果表明: 在省级和市级(区域)尺度上, 与本地种亲缘关系较近的外来植物更有可能在当地归化和扩散, 符合预适应假说的预期; 而在群落(局域)尺度上, 外来种-本地种亲缘距离与外来种是否在群落中成功定居及其入侵程度无关。该研究结果表明与本地区系亲缘较近的外来种和本地种的竞争并不强烈, 却能较好地适应本地气候环境而具有更强的归化和入侵潜力。因此, 在今后的外来植物管理和治理中需要尤其重视与本地区系亲缘关系较近的外来植物。

关键词: 谱系距离, 尺度, 生态位重叠, 生境过滤, 入侵阶段

Abstract:
Aims Darwin’s naturalization conundrum describes the paradox that the relationship of exotic species to native residents could either promote or hinder invasion success through opposing mechanisms: niche pre-adaptation or competitive interactions. Previous Darwin’s naturalization studies have showed invasion success could vary at stages, sites, and spatial and phylogenetic scales. Our objective was to assess the effects of exotic-native species relationship on invasion process of exotic plant species in China, where related research is still lacking.
Methods Generalized linear mixed models were used to examine relationship between exotic-native species relationship and performance of exotic species at different spatial scale (provincial, municipal and community) and invasion stages (naturalization, dispersal and invasion). At community scale, we measured environmental factors of communities we investigated to control the effect of habitat heterogeneity among them.
Important findings At the provincial and municipal scales, exotic species closely related to native flora were more likely to be naturalized and distributed, which is more consistent with the expectation of the pre-adaptation hypothesis. On the community scale, the exotic-native species relationship was not related to establishment and abundance of exotic species in the community. The results suggested that exotic species did not strongly compete with their close native relatives in communities, but were better adapted to areas where their close relatives had lived. Considering their high potential of naturalization and invasion, special attention should be paid to those exotic species that closely related to the native flora in the management of invasive species.

Key words: phylogenetic distance, scale, niche overlap, habitat filtering, stages of invasion