Growing Site Characteristics of Agathis labillardieri Warb in the Natural Forests of Siwi Momiwaren, West Papua

Siburian, Rima Herlina; Trirbo, Mei; Angrianto, Rusdi

doi:10.23960/jsl38297-307

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…This condition was supported by the high value of CEC (> 40) at the study site. CEC plays an essential role in retaining soil nutrients (Luo et al 2015) and controlling the supply of exchangeable cations, namely Ca 2+ , Mg 2+ , K + , Na + , Al 3+ , and Fe 3+ (Mueller et al 2012), so the soil with a high CEC able to absorb and provide sufficient nutrients for plant growth (Siburian et al 2020).…”

Section: Habitat Characteristics Affecting the Presence Of Castanopsi...mentioning

confidence: 99%

Autecology of <i>Castanopsis argentea</i> (Blume) A.DC. in Telaga Warna Nature Reserve Area, Bogor Regency

Putri

Sulistijorini²,

Djuita³

2022

J.Tropical Biodiversity Biotechnology

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The red list of the International Union for the Conservation of Nature and Natural Resources (IUCN) reported Castanopsis argentea as an endangered species. Studies about autecology on its natural habitat become important to perform species conservation. This study aimed to analyze the population structure, distribution pattern, and environmental factors that influence the presence of C. argentea in the Telaga Warna Nature Reserve. Data was collected in September 2020 by making 21 plots with a single plot. The purposive sampling method was used based on C. argentea representatives to determine plot location. Measurement of environmental factors, including soil sampling was carried out on each plot. Population structure was analyzed based on plant density, and Morisita index determined the distribution pattern. Environmental data were analyzed using PCA with Minitab 19 programs. Our field observation showed that C. argentea seedling has the highest density (1071 ind/ha) and decreased in the mature phase. C. argentea was found to have a clumped distribution pattern with an Id value of 1.03. PCA analysis showed differences in environmental factors that were thought to influence the presence of C. argentea individuals in four growth phases. The highest population structure of C. argentea was found in the growth phase of seedlings and saplings at an altitude of 1400 m asl. The spread population distribution of C. argentea was clumped. The influences of environmental variables on the existence of C. argentea were Mg, Ca, CEC, pH, and soil moisture.

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Section: Habitat Characteristics Affecting the Presence Of Castanopsi...mentioning

confidence: 99%

Autecology of <i>Castanopsis argentea</i> (Blume) A.DC. in Telaga Warna Nature Reserve Area, Bogor Regency

Putri

Sulistijorini²,

Djuita³

2022

J.Tropical Biodiversity Biotechnology

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“…Richness and abundance are significantly related to species' potential regeneration status in spatial and temporal scales (Siburian et al 2020). Forest regeneration is an essential part of how older trees are regularly regenerated by younger vegetation (Bogale et al 2017).…”

Section: Regeneration Statusmentioning

confidence: 99%

Woody Species Stand Structure and Regeneration Status in Long Jack (Eurycoma longifolia Jack) Habitat in Batang Lubu Sutam Forest, Padang Lawas, North Sumatra

et al. 2021

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Long jack (Eurycoma longifolia) is a medicinal plant that has become a common target for exploitation, leading to a population decline in natural forests. This study aimed to determine the stand structure and regeneration status of E. longifolia tree habitat in Batang Lubu Sutam Forest, Padang Lawas, North Sumatra. The research was performed through vegetation analysis using a purposive sampling technique with a randomized sample plot based on the presence of E. longifolia. A total of 181 plots were established in this study. The results showed that the horizontal structure of tree species in the research area had an inverted J-shape pattern, indicating that the number of trees decreased as the diameter increased. The vertical structure showed that all strata were found in the research location, dominated by stratum C. This condition indicated that the forest was in good condition. The regeneration status of 48 species in the location showed different categories. Thirty species (62.50%) were classified as good regeneration, ten species (18.75%) as new regeneration, and four species (8.30%) as poor and no regeneration. The high proportion of trees with good regeneration showed that the forest community could survive despite environmental or anthropogenic stress. Keywords: long jack (Eurycoma longifolia), regeneration, species composition, vegetation structure

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“…Damar (Agathis labillardieri) is a tree species in the family Araucariaceae. The tree is monopodial, has a large size with a moderate growth rate (Kartikasari et al 2012;Siburian et al 2020), and can live for hundreds of years (Rachman 2007;Saa et al 2009). A. labillardieri is one of the selected species developed in industrial plantation forests in Papua and West Papua due to its economic value.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Cones and Seeds of Damar (Agathis labillardieri) from Plantation in Klasaman, Sorong

Angkotta¹,

Nugroho²,

Sinaga³

2022

J. Sylva Lestari

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Damar (Agathis labillardieri) is endemic species to New Guinea, occurring naturally in Papua and West Papua Province, Indonesia. The species is economically valuable due to its resin and wood. This research aimed to study the cones and seeds characteristics of A. labillardieri collected from Sorong Nature Park at Klasaman, Sorong, Papua Barat. The characteristics observed included cone size and weight, number of scales, empty and filled seed, and seed moisture content. The germination test was also performed. Although the stands could produce cones, not all scales contained seeds, and not all seeds were filled seeds. On average, 53 filled seeds per cone or only 50.3 ± 5.7% of the total seeds found as filled seeds. The seed was characterized as a recalcitrant seed with high moisture content and rapid germination. On average, the seed moisture content was 38.9%, with an average germination time of four days. The combined factors that may contribute to the low natural regeneration of A. labillardieri are low filled seeds, seed sensitivity to desiccation, and high mortality in newly emerging seedlings during recruitment. Therefore, facilitating the forest floor for immediate germination of recalcitrant seeds as in A. labillardieri is suggested. Keywords: Agathis labillardieri, filled seed, germination, natural regeneration, recalcitrant seed

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Growing Site Characteristics of Agathis labillardieri Warb in the Natural Forests of Siwi Momiwaren, West Papua

Cited by 3 publications

References 24 publications

Autecology of <i>Castanopsis argentea</i> (Blume) A.DC. in Telaga Warna Nature Reserve Area, Bogor Regency

Autecology of <i>Castanopsis argentea</i> (Blume) A.DC. in Telaga Warna Nature Reserve Area, Bogor Regency

Woody Species Stand Structure and Regeneration Status in Long Jack (Eurycoma longifolia Jack) Habitat in Batang Lubu Sutam Forest, Padang Lawas, North Sumatra

Characterization of Cones and Seeds of Damar (Agathis labillardieri) from Plantation in Klasaman, Sorong

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