Exotic plant species with longer seed bank longevity and lower seed dry mass are more likely to be invasive in China

Author:

Pan Yueyan12,Xie Lumeng12,Shang Ruiyan12,Engel Bernard A3,Chen Jingqiu4,Zhou Shijun12,Li Yi12,Zhang Mingxiang125,Zhang Zhenming125,Liu Jiakai125

Affiliation:

1. School of Ecology and Nature Conservation, Beijing Forestry University , Beijing 100083 , China

2. The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration , Beijing 100083 , China

3. College of Agriculture, Purdue University , West Lafayette, IN 47907 , USA

4. Biological Systems Engineering, Florida A&M University , Tallahassee, FL 32310 , USA

5. Wetland Research Centre of Beijing Forestry University , Beijing 100083 , China

Abstract

Abstract Globalization of social and economic activities has led to the large-scale redistribution of plant species. It is still unclear how the traits aid the successful invasion of alien species. Here, we downloaded global plant trait data from the TRY-Plant Trait Database and classified alien species in China into four groups: high, medium, need attention and harmless according to their distribution and degree of harm to local plant communities based on existed studies. The relationship between plant functional traits and invasion level was clarified, and we established a prediction model based on plant functional traits and taxonomy. The results showed that species with smaller seeds, smaller individuals, lower special leaf area and longer seed bank longevity (SL) are more likely to be an invasive species after introduction to foreign ecosystems. In summary, exotic species with longer SL and lower seed dry mass are more likely to be invasive in China. We also trained two predictive models to check if we can predict a species’ invasion. Combining the two models together, statistically, we could predict if a species is invasive from its traits and taxonomy with a 91.84% accuracy. This model could help local governments, managers and stakeholders to evaluate shall we introduce some plant species in China.

Funder

National Forestry and Grassland Administration Emergency Leading the Charge with Open Competition Project

Fundamental Research Funds for the Central University

Publisher

Oxford University Press (OUP)

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