Interspecific association and community stability analysis of dominant trees and shrubs in the companion community of <i>Camellia flavida</i> Hung T. Chang

Ruan Pingzhen; Wang Bin; Zhong Yiqian; Luo Ting; Liu Chengyuan; Lu Maoxin; Tao Wanglan; Lu Fang; Li Dongxing; Li Xiankun

doi:10.11913/PSJ.2095-0837.23147

Plant Science Journal > 2024 > 42(2): 170-180. > DOI: 10.11913/PSJ.2095-0837.23147 CSTR: 32231.14.PSJ.2095-0837.23147

Ruan PZ，Wang B，Zhong YQ，Luo T，Liu CY，Lu MX，Tao WL，Lu F，Li DX，Li XK. Interspecific association and community stability analysis of dominant trees and shrubs in the companion community of Camellia flavida Hung T. Chang[J]. Plant Science Journal，2024，42（2）：170−180. DOI: 10.11913/PSJ.2095-0837.23147

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Interspecific association and community stability analysis of dominant trees and shrubs in the companion community of Camellia flavida Hung T. Chang

Ruan Pingzhen^{1, 2, 3,},
Wang Bin^{2, 3, ,},
Zhong Yiqian^{1, 2, 3},
Luo Ting^{1, 2, 3},
Liu Chengyuan^{3, 4},
Lu Maoxin^{3, 4},
Tao Wanglan^{2, 3},
Lu Fang^{2, 3},
Li Dongxing^{2, 3},
Li Xiankun^{2, 3, ,}

1.
College of Life Sciences, Guangxi Normal University, Guilin, Guangxi 541006, China
2.
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, Guangxi 541006, China
3.
Nonggang Karst Ecosystem Observation and Research Station of Guangxi, Chongzuo, Guangxi 532499, China
4.
Administration of Nonggang National Nature Reserve of Guangxi, Chongzuo, Guangxi 532499, China

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Received Date: May 22, 2023
Accepted Date: August 22, 2023

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Abstract

Abstract

To investigate species associations within the Camellia flavida Hung T. Chang associated community under natural conditions and their impact on community stability, survey data collected from 10 quadrats (600 m²) in Nonggang Nature Reserve over 10 years (2011–2021) were analyzed. Variance ratio (VR), Chi-square ( $\chi^2$ ) test, Spearman rank correlation, and M. Godron stability analysis were employed to assess the interspecific correlation and community structure stability of C. flavida and its accompanying species at different levels. Results indicated that: (1) Dominant species in the tree layer did not exhibit negative associations, while those in the shrub layer displayed significantly positive associations. Over time, the overall interspecific associations of the tree layer shifted towards positive associations, and the positive interactions in the shrub layer notably increased. (2) The $\chi^2$ and Spearman rank correlation tests indicated that most species pairs in the community were not significantly correlated, reflecting weak associations among various species pairs. However, C. flavida exhibited significantly positive correlations with dominant species, such as Ficus oligodon Miq. in the tree layer and Orophea polycarpa A. Candolle in the shrub layer, and significantly negative correlations with F. hispida L. f. in the tree layer and Antidesma japonicum Siebold & Zucc in the shrub layer. (3) The community associated with C. flavida demonstrated high stability, with the characteristics and stability of the community positively contributing to the conservation of C. flavida. In conclusion, specific dominant trees and shrubs significantly affect the distribution of C. flavida within its community, which has maintained relative stability over the last decade, facilitating the growth of the C. flavida population. Ongoing protection of its natural habitats and sustained long-term community monitoring are recommended.
- Camellia flavida,
- Associated community,
- Interspecific correlation,
- Trees and shrubs,
- Community stability

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Interspecific association and community stability analysis of dominant trees and shrubs in the companion community of Camellia flavida Hung T. Chang