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PUTU SUPADMA PUTRA
Department of Agricultural Sciences, Postgraduate School, Universitas Hasanuddin. Jl. Perintis Kemerdekaan Km. 10, Makassar 90245, South Sulawesi, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Seasonal litter production patterns in three tropical forests in Sulawesi, Indonesia: Implications for managing secondary forests PUTU SUPADMA PUTRA; AMRAN ACHMAD; TOSHIHIRO YAMADA; PUTU OKA NGAKAN
Biodiversitas Journal of Biological Diversity Vol. 24 No. 2 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d240222

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Abstract. Putra PS, Achmad A, Yamada T, Ngakan PO. 2023. Seasonal litter production patterns in three tropical forests in Sulawesi, Indonesia: Implications for managing secondary forests. Biodiversitas 24: 852-860. We studied the seasonal patterns of litter production in three tropical forests (Karst, Lowland, and Pine) on the Indonesian island of Sulawesi and measured environmental factors related to litter production from June 2019 to May 2020. Permanent plots of 0.4 ha to 1.0 ha were established in each forest to analyze forest structure and species composition. Thirty-six traps with a surface area of 1 m2 were installed to collect litterfall. The results showed the highest species diversity in the Karst forest, the highest tree density in the Lowland forest, and the largest basal area in the Pine forest. The most excellent litter production was in the Lowland forest (1,607.21 g/m2/year), followed by the Pine forest (1,288.24 g/m2/year) and Karst forest (1,099.83 g/m2/year). Litter production was more significant in the dry season in Karst and Pine forests, but there was no inter-seasonal difference in Lowland forest. Rainfall was the only environmental factor that differed between seasons. Differences in phenological adaptation between pioneer and climax species that comprise each forest likely account for the observed differences in litter production patterns.
Differences in the vegetation dynamic patterns of three tropical secondary forests in South Sulawesi, Indonesia PUTU SUPADMA PUTRA; TOSHIHIRO YAMADA; AMRAN ACHMAD; NASRI NASRI; ANDI SIADY HAMZAH; PUTU OKA NGAKAN
Biodiversitas Journal of Biological Diversity Vol. 24 No. 9 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d240950

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Abstract. Putra PS, Yamada T, Achmad A, Nasri N, Hamzah AS, Ngakan PO. 2023. Differences in the vegetation dynamic patterns of three tropical secondary forests in South Sulawesi, Indonesia. Biodiversitas 24: 5065-5073. Degraded forests experience dynamics that drive them towards stable ecological conditions as a result of the succession process. Understanding the dynamics of forests through succession is a requirement for secondary forest management activities. The purpose of this research was to uncover the dynamics of population, species composition, and dominance in three secondary tropical forest communities: (i) Karst forest, (ii) Lowland forest, and (iii) Pinus merkusii plantation forest. Permanent plots with areas tailored to the richness of each forest community were constructed, and vegetation studies were conducted annually from 2019 to 2022. The results revealed that the ten most dominant species in each plot shared only one species. The rest were exclusive to a single community. During the four years of research, 25 out of a total of 90 species (Karst), 27 out of a total of 68 species (Lowland), and 12 out of a total of 43 species (Pine) experienced dynamics in the form of an increase or decrease in population. Tree density decreased in the Karst plot and fluctuated slightly in the Lowland and Pine forest plots. Meanwhile, the basal area cover continued to increase during the 4 years of observation. Comparing age and pre-succession land use history, soil type and restoration history appear dominant in determining the forest dynamics.
Co-Authors AMRAN ACHMAD AMRAN ACHMAD ANDI SIADY HAMZAH NASRI NASRI PUTU OKA NGAKAN PUTU OKA NGAKAN TOSHIHIRO YAMADA TOSHIHIRO YAMADA