Cross-Continental Shifts of Ecological Strategy in a Global Plant Invader

IF 6.3 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography Pub Date : 2025-02-06 DOI:10.1111/geb.70001

Ramona E. Irimia, Weihan Zhao, Peipei Cao, Madalin Parepa, Zhi-Yong Liao, Shengyu Wang, Jeannie M. Mounger, Conner Richardson, Fatima Elkott, Xin Zhuang, Jingwen Bi, Jieren Jin, Yujie Zhao, Elodie Kugler, Julia Rafalski, Eva Schloter, Jihua Wu, Rui-Ting Ju, Ji Yang, Zuzana Chumová, Pavel Trávníček, Bo Li, Oliver Bossdorf, Christina L. Richards

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引用次数: 0

Abstract

Aim

Plant invasions are a global problem that requires studying plants and their environmental associations across native and introduced ranges.

Location

2000 km transects in China, Europe and North America.

Time Period

June 2019–July 2020.

Major Taxa Studied

Japanese knotweed (Reynoutria japonica).

Methods

We surveyed 150 populations of Japanese knotweed, a noxious invader of the temperate zone, along 2000 km transects in native China and the introduced ranges of Europe and North America.

Results

We found that larger plants and denser populations in the introduced ranges were associated with shifts in leaf economy and chemical defences. Introduced knotweed populations had higher SLA but reduced leaf chlorophyll, lignin, C:N ratio and leaf toughness along with altered leaf tannins, flavonoids and alkaloids. We found three distinct multivariate knotweed phenotypes primarily in the introduced ranges, and two multivariate knotweed phenotypes mainly in native populations.

Main Conclusions

Decreased herbivore and pathogen impacts in introduced populations and changes in environmental associations indicate that enemy release and novel habitat conditions might have driven the emergence of novel ecological strategies in this global plant invader.

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来源期刊

Global Ecology and Biogeography 环境科学-生态学

CiteScore

12.10

自引率

3.10%

发文量

170

审稿时长

3 months

期刊介绍： Global Ecology and Biogeography (GEB) welcomes papers that investigate broad-scale (in space, time and/or taxonomy), general patterns in the organization of ecological systems and assemblages, and the processes that underlie them. In particular, GEB welcomes studies that use macroecological methods, comparative analyses, meta-analyses, reviews, spatial analyses and modelling to arrive at general, conceptual conclusions. Studies in GEB need not be global in spatial extent, but the conclusions and implications of the study must be relevant to ecologists and biogeographers globally, rather than being limited to local areas, or specific taxa. Similarly, GEB is not limited to spatial studies; we are equally interested in the general patterns of nature through time, among taxa (e.g., body sizes, dispersal abilities), through the course of evolution, etc. Further, GEB welcomes papers that investigate general impacts of human activities on ecological systems in accordance with the above criteria.