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Competitive Advantage of IBroussonetia papyrifera/I Growing in a Native Area as Suggested by Structural Diversity
Biology (Basel, Switzerland), 2023-11, Vol.12 (11)
[Peer Reviewed Journal]
COPYRIGHT 2023 MDPI AG ;ISSN: 2079-7737 ;EISSN: 2079-7737 ;DOI: 10.3390/biology12111410
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Title:
Competitive Advantage of IBroussonetia papyrifera/I Growing in a Native Area as Suggested by Structural Diversity
Author:
Zhou, Yanrong
;
Zhang, Guangfu
Is Part Of:
Biology (Basel, Switzerland), 2023-11, Vol.12 (11)
Description:
In this study, we ask whether the invasive paper mulberry (Broussonetia papyrifera) has a competitive advantage over neighbor trees in a native area. We determined the competitive capacity of paper mulberry in three deciduous broad-leaved forests using structural indices including the mixing index, the tree–tree interval index, and the diameter/height differentiation index. It was found that the reference paper mulberry had a slight competitive advantage over neighboring trees in both the horizontal and vertical planes. Such a competitive ability may play a significant role in the ecological invasion of paper mulberry. Our findings not only help to reveal the invasion mechanism of paper mulberry, but also provide an important reference for the management and utilization of paper mulberry in invaded areas. Paper mulberry (Broussonetia papyrifera) is currently an invasive species on several continents. However, little is known about whether paper mulberry has a competitive advantage over its surrounding trees in its native distribution range, subtropical regions of China. Here, we determined the relative intraspecific and interspecific competitive capacity of paper mulberry in three subtropical deciduous broad-leaved forests using the indices of structural diversity including the mixing index, the tree–tree interval index, and the diameter/height differentiation index. It was found that more than 80% of mingling index values were not greater than 0.25, suggesting a stronger competitiveness of paper mulberry relative to other tree species. The tree–tree interval index values ranged between 1 m and 2 m, suggesting a strong competition between paper mulberry and its neighbors. Moreover, more than 60% of the height differentiation index and diameter differentiation index values were positive, suggesting that the reference paper mulberry had a slight competitive advantage over neighboring trees in both the horizontal and vertical planes. These collectively suggest a competitive advantage over other tree species in the native distribution range, which may play a significant role in the ecological invasion of paper mulberry. Our findings not only help to reveal the invasion mechanism of paper mulberry, but also provide an important reference for the management and utilization of paper mulberry in invaded areas.
Publisher:
MDPI AG
Language:
English
Identifier:
ISSN: 2079-7737
EISSN: 2079-7737
DOI: 10.3390/biology12111410
Source:
PubMed Central
ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals
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