The future of some tree species may be at risk due to genetic erosion owing to the fast decline in the world’s forest cover and overexploitation of goods. Therefore, understanding seed production, dispersal and the fate of seed populations, and seedling growth is crucial to revitalization of these species and channelizing the change towards ecosystem restoration. The study aims to estimate the seed production, dispersal, fate of seed populations, and seedling growth of Lagerstroemia speciosa in the Eastern Himalayan region of India. The results indicate that seed production significantly varied between the years (p<0.05) and among individual trees (p<0.01). The findings also showed strong positive correlations between seed production and tree characteristics such as DBH, number of branches, inflorescences, crown height, crown diameter. Additionally, there was a strong negative correlation between the number of seeds dispersed per unit area and dispersal distance from the mother tree (r=-0.88 in 2022 and r=-0.76 in 2023), with a significant difference observed in 2023 (p<0.05). We found that 85% of the total seed produced fell directly under the mother tree, with fewer seeds dispersed farther away. However, seed disappearance decreased with increasing distance from the mother tree. Moreover, a correlation was observed between seedlings’ growth parameters and microclimatic variables. The restricted spatial extent of seed dispersal has important implications for the dynamics, management, and conservation of L. speciosa.
목차
Abstract Introduction Materials and Methods Study area Data collection Data analysis Formula and equations Results Seed production, seed dispersal and soil seed bank dynamics Fate of seeds in the soil Seed disappearance and germination in relation to distance from the mother tree Seedlings growth and its relation to microclimatic Seed production, dispersal and seedling recruit-mentcycle of L. speciosa Discussion Seed production, dispersal and soil seed bank dynamics Seed disappearance and germination in relation to distance from the mother tree Seedlings growth and its relation to microclimatic factors Conclusions Acknowledgements References
키워드
Lagerstroemia speciosaseed productiondispersal and fate of the seedsdispersal distance
저자
Faisal Ismail Musa [ Department of Forestry, School of Earth Sciences & Natural Resource Management, Mizoram University, Aizawl, Mizoram 796004, India/Department of Forestry, Faculty of Agriculture & Natural Resources, University of Blue Nile, Ad-Damzin 26611, Sudan ]
Corresponding Author
Uttam Kumar Sahoo [ Department of Forestry, School of Earth Sciences & Natural Resource Management, Mizoram University, Aizawl, Mizoram 796004, India ]
Prakash Kumar Sarangi [ Department of Microbiology, Central Agricultural University, Imphal 795004, India ]
Lalrempuii Hrahsel [ Department of Forestry, School of Earth Sciences & Natural Resource Management, Mizoram University, Aizawl, Mizoram 796004, India ]
Kalidas Upadhyaya [ Department of Forestry, School of Earth Sciences & Natural Resource Management, Mizoram University, Aizawl, Mizoram 796004, India ]
Suresh Ramanan Sundaram [ Department of Forestry, School of Earth Sciences & Natural Resource Management, Mizoram University, Aizawl, Mizoram 796004, India/Department of Agroforestry, ICAR-Central Agroforestry Research Institute, Jhansi, UP 284003, India ]