生物多样性 ›› 2024, Vol. 32 ›› Issue (11): 24263.  DOI: 10.17520/biods.2024263  cstr: 32101.14.biods.2024263

• 生物入侵专题 • 上一篇    下一篇

本地群落多样性和时间稳定性对加拿大一枝黄花生物量的影响

龙诗怡1, 张博博1, 夏宇辰1, 费杨帆1, 孟亚妮1, 吕冰薇1, 宋月青1, 郑普1, 郭陶然2, 张健1,3(), 黎绍鹏1,*()()   

  1. 1.华东师范大学生态与环境科学学院, 浙江天童森林生态系统国家野外科学观测研究站, 上海 200241
    2.上海天渊生态科技有限公司, 上海 201112
    3.中山大学生命科学学院, 广州 510275
  • 收稿日期:2024-06-28 接受日期:2024-11-05 出版日期:2024-11-20 发布日期:2024-12-09
  • 通讯作者: E-mail: spli@des.ecnu.edu.cn
  • 基金资助:
    国家重点研发计划(2023YFC2604500);国家自然科学基金(32222051);华东师范大学未来领军英才卓越学术计划进阶项目(2024ZY-015)

Effects of diversity and temporal stability of native communities on the biomass of invasive species Solidago canadensis

Shiyi Long1, Bobo Zhang1, Yuchen Xia1, Yangfan Fei1, Yani Meng1, Bingwei Lü1, Yueqing Song1, Pu Zheng1, Taoran Guo2, Jian Zhang1,3(), Shaopeng Li1,*()()   

  1. 1. Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
    2. Tianyuan Ecology Technology Co., Ltd., Shanghai 201112, China
    3. School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2024-06-28 Accepted:2024-11-05 Online:2024-11-20 Published:2024-12-09
  • Contact: E-mail: spli@des.ecnu.edu.cn
  • Supported by:
    National Key Research and Development Program of China(2023YFC2604500);National Natural Science Foundation of China(32222051);East China Normal University Outstanding Academic Training Program for Future Leading Talents(2024ZY-015)

摘要:

“多样性-可入侵性”和“多样性-稳定性”之间的关系是当前生态学研究的前沿领域和热门话题, 然而少有研究将二者有机结合。多样性是否通过提高群落的时间稳定性进而抑制入侵, 即群落时间稳定性的提高是否是多样性抵御入侵的关键途径, 是尚未解决的关键科学问题。本研究于上海乡土生态科普示范基地开展野外原位控制实验, 通过向不同的本地植物群落移栽加拿大一枝黄花(Solidago canadensis)幼苗模拟外来物种入侵, 并监测移栽后入侵种的生物量, 以揭示本地群落的物种多样性和谱系多样性、时间稳定性和样方郁闭度与加拿大一枝黄花生长表现的相关关系。结果表明: 本地群落的物种多样性和谱系多样性(尤其是盖度加权后)与入侵种的生物量正相关。同时, 本地群落的物种多样性和谱系多样性(尤其是盖度加权时)与本地群落的时间稳定性正相关。然而, 入侵种生物量与本地群落的时间稳定性无显著相关关系, 但与林冠郁闭度显著负相关。结构方程模型结果显示: 在物种多样性较高且样方郁闭度较低的群落中, 入侵种的生物量相对较高; 物种多样性与入侵种生物量存在强正相关路径, 抵消了物种多样性通过提高时间稳定性进而对入侵种生物量产生的抑制作用。本研究揭示了物种多样性和谱系多样性及时间稳定性与群落可入侵性的复杂关联, 为探讨“多样性-可入侵性”关系的作用途径和机制提供了新的研究视角。

关键词: 物种多样性, 谱系多样性, 时间稳定性, 入侵种, 加拿大一枝黄花

Abstract

Aim: Elton’s foundational ideas on “diversity-invasibility” and “diversity-stability” relationships have long been central to ecological research, yet the link between these concepts remains largely unexplored. It remains unclear whether diversity reduces invasions by enhancing community temporal stability, and thereby making stability a primary mechanism by which diversity resists invasion.

Methods: We conducted an in situ experiment at the Shanghai Urban Biodiversity Education Base to simulate the invasion processes by transplanting Solidago canadensisseedlings into native herbaceous communities. We then measured the biomass of the invader, to assess the relationship between species diversity, phylogenetic diversity, temporal stability, canopy closure of the native communties, and the growth performance of the invader.

Results: We found that both species diversity and phylogenetic diversity of native communities, particularly when assessed by cover-weighted measures, were generally positively correlated with invader biomass. These diversity measures also generally showed a positive correlation with the temporal stability of native communities. However, invader biomass was not significantly related to community temporal stability but was negatively related to canopy closure. Structural equation modeling indicated that higher diversity and lower canopy closure of native communities increased invader biomass, and the positive relationship between diversity and invader biomass offset the potential negative effect of diversity on invasion by enhancing temporal stability.

Conclusions: This study elucidates that species diversity and phylogenetic diversity, along with temporal stability, can exert complex influences on community invasibility, providing new insights into the mechanisms underlying the “diversity-invasibility” relationship.

Key words: species diversity, phylogenetic diversity, temporal stability, invader, Solidago canadensis