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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management International Journal of Biosciences and Biotechnology Research Journal of Life Science Forest and Society Journal of Sylva Indonesiana Global Forest Journal
Seca Gandaseca
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences

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Volume Estimation of Standing Shorea sp. on UPM-JISE Rehabilitated Forest in Bintulu, Sarawak Izyan Alwani; Seca Gandaseca
Jurnal Manajemen Hutan Tropika Vol. 14 No. 3 (2008)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (38.736 KB)

Abstract

This study was aimed to analyze the relationship between diameter at breast height, height, and volume of standing Shorea sp. and the relationship between age and volume of this species.  The study was conducted at different ages of rehabilitated forest in Bintulu Sarawak, where the measurement was taken from tree stand year 1992 until 2003.  The sampling plot of 20m x 20m was built for each age of stand. Ten standing Shorea sp. were randomly measured for sectionals (taper) from diameter at breast height until the free branches of the tree. The rest of the trees within the plot were only measured by diameter at breast height. All collected data were calculated to find basal area of each tree in meter square (m2).  The volume per plot was calculated using the Smalian’s formula to find the taper volume of the Shorea sp.  Statistical analysis was conducted to find the regression equation which could explain the relation between volume, diameter, and height of the tree.  Result showed that there was a relationship between volume, diameter, and height of the tree, and also there was relationship between volume and age of the tree.  Meanwhile, there was no relationship between taper of standing trees and age of trees. This means that volume taper of standing tree and age have no correlation.
Productivity and Cost Analysis of Forest Harvesting Operation in Matang Mangrove Forest, Perak, Malaysia Tindit, Albert Empawi; Gandaseca, Seca; Nyangon, Laurna; Pazi, Ahmad Mustapha Mohamad
Forest and Society Vol. 1 No. 1 (2017): APRIL
Publisher : Forestry Faculty, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/fs.v1i1.1529

Abstract

Matang Mangrove Forest is under systematic management since 1902 and still considered as the best managed mangrove forest in the world. This research was conducted to measure the time and productivity of forest harvesting operation and also to analyze the cost and revenue of mangrove forest harvesting operation at Matang mangrove forest. This project had been carried out in cooperation with Seri Sepetang Enterprise, one of the harvesting licenses in Kuala Sepetang, Perak.  Data collections were taken in every station starting from standing tree until to the Kiln-Drying jetty. The data then calculated by using the formulas of productivity and cost analysis. As the result, the productivity for felling, bucking and debarking, the manual skidding using wheel-barrow and the water transportation are 1.84 tan/hour, 3.82 tan/hour and 4.64 tan/hour respectively.  The cost for each operation of 9 tan log volume for felling, bucking and debarking, the manual skidding using wheel-barrow and the water transportation are RM 56.88, RM 10.80 and RM 36.72 respectively. As the revenue, the company paid RM 260 per 9 tan of log for the in-forest operation (felling, manual skidding and loading to the ship) and pay RM 80 per 9 tan for the water transportation, and they gained the net profit of RM 192.32 and RM 43.28 respectively. The average of forest harvesting operation is twice operation in a day (equal with 2 x 9-ton volume of log production a day), so they will gain a double profit.  In conclusion, the forest harvesting operation is sustainably managed for supplying the raw material of charcoal industries in Matang mangrove forest. Since, they work manually and spend much energy in this forest harvesting operation, so for further study it recommends to conduct the ergonomics evaluation during forest harvesting operation at Matang Mangrove Forest.
Evaluating land suitability for kemiri (Aleurites moluccana) as a multi-purpose tree species in community agroforestry land within Langkat District, North Sumatra Rahmawaty; Sintike Frastika; Abdul Rauf; Ridwanti Batubara; Mohd Hasmadi Ismail; Seca Gandaseca
Global Forest Journal Vol. 2 No. 02 (2024): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v2i02.15626

Abstract

Evaluating land suitability for Aleurites moluccana in community agroforestry land within Langkat District, North Sumatra, is crucial for promoting sustainable development, enhancing livelihoods, and preserving ecosystems while honoring local traditions and cultures. The primary objective of this research was to evaluate and map the land suitability for A. moluccana within Langkat District, located in North Sumatra, Indonesia. To gather the necessary data, this study employed a survey method, involving the collection of soil samples from ten distinct land units within the field. The assessment of land suitability was carried out using the matching method. Geographic Information System (GIS) technology was utilized to create maps illustrating the distribution of land suitability, while a Global Positioning System (GPS) was employed to accurately record the coordinates of the collected soil samples. The findings revealed that within Gunung Ambat, Simpang Kuta Buluh, Rumah Galuh, and Telagah Village, the actual land suitability classes for A. moluccana were classified as moderately suitable (S2) and marginally suitable (S3). The prevailing limiting factors in this region were temperature (tc) and the characteristics of the root zone medium (rc). Consequently, this influenced the potential land suitability classes for A. moluccana, resulting in classifications ranging from highly suitable (S1) to moderately suitable (S2) and marginally suitable (S3). By implementing land suitability evaluation for A. moluccana in community agroforestry land, promoting sustainable land use, enhancing livelihoods, and conserving natural resources.
Analysis of Land Suitability for Arabica Coffee in Toba Regency, North Sumatra, Indonesia Nora, Silvia; Kuswardani, Retna Astuti; Mawardi, Surip; Wijoyo, Hadi; Gandaseca, Seca; Novita, Aisar
International Journal of Biosciences and Biotechnology Vol 11 No 1 (2023): International Journal of Biosciences and Biotechnology
Publisher : Central Laboratory for Genetic Resource and Molecular Biology, Faculty of Agriculture, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJBB.2023.v11.i01.p07

Abstract

Coffee is a mainstay plantation commodity in Toba Regency which is managed independently by the community where the land around the Lake Toba area is one of the potential lands in Toba Regency for developing Arabica coffee commodities because geographically Toba Regency is located at an altitude of 900 meters to 2,200 meters above sea level and directly borders Lake Toba. The strong roots of coffee plants make this plant one of the mainstays in preserving forests, restoring critical land, preventing erosion and flooding during the rainy season. The aim of this research is to analyze the land suitability of Arabica coffee plantations in Toba Regency. The method used to analyses the land suitability by using the matching method which was carried out by matching land characteristics with parameters/ criteria for plants based on Land Map Unit (LMU). The research results show that the area of Toba Regency based on the Geographic Information System (GIS) is 207,518.31 ha. Very suitable (S1) land suitability for Arabica Coffee Plants covering an area of 67,844.68 ha (32.69%), an area of 132,030.09 ha (63.62%) has S2 suitability class and an area of 7,643.54 ha (3.68%) has marginal suitability (S3). The potential land suitability class for coffee plants in Toba Regency becomes very suitable (S1) covering an area of 67,844.68 ha or 32.69%, moderate suitable class (S2) with temperature limitation covering an area of 132,030.09 ha (63.62%) and marginal suitability (S3 with temperature limitation) covering an area of 7,643.54 ha or 3.68%. Nutrient deficiencies were corrected by adding phosphorus (P) fertilizer of 4.19 kg P/ha or 9.31 kg SP36/ha or 11.63 kg TSP/ha. Nitrogen (N) fertilizer is 75 kg N/ha or the equivalent of 166,625 Kg Urea/ha. Potassium (K) fertilizer as much as 3 kg KCl/ha. Compost fertilizer is 10.56 tons of compost/ha.
Application of Analytical Hierarchy Process in Strategy of Human Resource Capacity Building at The Karya Lestari Farmers Group, Sibaganding Village, Simalungun Regency Simanjuntak, Friska Irene; Siti Latifah; Rahmawaty; Mohd Hasmadi Ismail; Seca Gandaseca; Mahawan Karuniasa
Journal of Sylva Indonesiana Vol. 7 No. 02 (2024): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v7i02.12376

Abstract

Social Forestry is a system of sustainable forest management implemented in state forest areas/private forests/customary forests by local communities or customary law communities as executors. This study aims to analyze the priority level of Human Resources (HR) capacity-building strategies in the Karya Lestari Farmers Group, Sibaganding Village, Girsang Sipangan Bolon District, Simalungun Regency. The research was carried out from September to November 2022 using primary and secondary data. The method used is the Analytical Hierarchy Process (AHP) using the Software Expert Choice tool. The data collection method is the Focus Group Discussion (FGD). Based on the results of the AHP, the priority of the HR capacity-building strategy is the criteria for increasing group knowledge in managing business potential to produce products that have good selling value and sell well in the market in the first place. The criteria for applying to the relevant agency to be included in group business management training activities are in second place and the criteria for establishing cooperation with related parties to help introduce group business products are in third place. Alternative aspects of institutional management are in first place, alternative aspects of area management are in second place and alternative aspects of business management are in third place
Exploration of medicinal plant in Telaga Village Langkat District Sumatera Utara Province, Indonesia Rahmawaty, Rahmawaty; Janter Bronson Samosir; Rizky Amalia; Sintike Frastika; Abdul Rauf; Ridwanti Batubara; Mohd Hasmadi Ismail; Seca Gandaseca
Global Forest Journal Vol. 3 No. 01 (2025): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v3i01.15783

Abstract

Medicinal plants in North Sumatra Province can be found in several places, including on agroforestry land, either planted or grown wild. This study aimed to identify the medicinal plants in the agroforestry land at Telaga Village. This research was conducted in Langkat District, North Sumatra, Indonesia, by survey method to collect medicinal plants by making 16 plots in the field. The results showed that there were found 199 individuals plant. Senduduk Bulu (Clidemia hirta) was the dominant plant that was found (61 individual plant) followed by Ilalang (Imperata cylindrical) (17 individual plant), Lempuyang (Zingiber zerumbet) (14 individual plant), and Merah Mata (Hedyotis corimbosa) (14 individual plant). The value of the diversity index (herbs and poles) was classified as moderate. The value of the diversity index (trees and saplings) was classified as moderate. The information about medicinal plant species is very important. Therefore, it is necessary to develop the information of medicinal plant regarding to be able to preserve the existing species of plants at Telaga Village.
Altitude-Dependent and Host Variety in Fruit Fly Populations: A Study on Bactrocera spp. in East Java Hamdoen, Fadel Muhammad; Tarno, Hagus; Syamsulhadi, Mochammad; Gandaseca, Seca
Research Journal of Life Science Vol 11, No 1 (2024)
Publisher : Direktorat Riset dan Pengabdian Masyarakat, Universitas Brawijaya

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Abstract

Oriental fruit fly (Bactrocera spp.) are one of the most invasive pests, known for their severe impact on causing damage to wide variety of comodities. In Indonesia, as an agricultural country, possesses vast agricultural areas, in which Bactrocera fruit flies pose a persistent threat to production, particularly in regions known for horticulture. This study aims to identify key environmental drivers influencing their distribution and abundance. A cross-sectional study was conducted across thirteen locations located in four regencies and cities within East Java, Indonesia. Fruit fly samples were collected using a purposive random sampling method, with the quantity of samples adjusted to the fruit availability at the research site. The results showed that B. albistrigata, B. carambolae, and B. dorsalis exhibit strong ecological overlap, sharing similar host plants and environmental preferences, which facilitate their coexistence. Furthermore, the research provides a foundation for predicting potential shifts in population distribution in response to climate change, enabling proactive measures to safeguard vulnerable agricultural systems.
Corruption risks and potential threats to the forestry sector in Peninsular Malaysia Norsyazwani Izzati Mohd Yahya; Mohd Hasmadi Ismail; Pakhriazad Hassan Zaki; Paiman Bawon; Rahmawaty; Seca Gandaseca
Global Forest Journal Vol. 3 No. 02 (2025): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v3i02.20618

Abstract

Corruption and forest disturbances represent substantial barriers to sustainabledevelopment in Malaysia's forestry sector. Working within this sector faces avariety of threats. This study explores key corruption risks within the forestrysector, analysing the motives and opportunities that drive forest offences inPeninsular Malaysia. Respondents from relevant agencies were primarilysurveyed using questionnaires. Data analysis using SPSS revealed the corruptionrisks encountered within the forestry sector. Respondents identified fieldwork andreporting as potential areas susceptible to corruption, with their perceptionsanalyzed through central tendency and dispersion measures. Additionally,correlation analysis was conducted to determine the strength and direction of therelationship between motive and opportunity regarding forest offences, and toassess whether the correlation was statistically significant. The findingsdemonstrated a robust positive correlation (r = 0.66) between motive andopportunity, indicating a significant relationship. This suggests that motives forforest offences correspond to opportunities for such offences. This studyhighlights the need for targeted collaboration between the Forestry Departmentand relevant authorities to develop specialized training programs. These programsare crucial for effectively investigating and prosecuting forest violations,ultimately reducing corruption risks
Analysis of mangrove vegetation diversity in Pematang Kuala Village, Teluk Mengkudu Sub-district, Serdang Bedagai Regency, North Sumatra Sitanggang, Miduk; Salomo Bobby Fernando Sihombing; Poppy Lumban Gaol; Rahmawaty; Seca Gandaseca; Mohd Hasmadi Ismail
Global Forest Journal Vol. 3 No. 02 (2025): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v3i02.21176

Abstract

Mangrove ecosystems are important in ecological, economic, and social aspects,especially for coastal communities. However, damage to mangrove ecosystemsdue to land-use changes for purposes such as settlements and fish ponds canthreaten their sustainability. This study aims to analyze the potential of themangrove ecosystem, apply the kao-kao model in silvofishery pond management,and analyze the potential of mangroves in increasing the income of the communityin Pematang Kuala Village, Teluk Mengkudu Sub-district, Serdang BedagaiDistrict, North Sumatra Province. The methods used include field surveys forvegetation analysis and interviews with Kelompok Usaha Bersama (KUB)Nelayan Sepakat members. Vegetation analysis was conducted in three zones:utilization zone I, II, and the protection zone. Each zone consisted of 5 plots,totaling 15 plots. Interviews were conducted with 27 respondents. The studyresults showed that the mangrove ecosystem in Pematang Kuala Village isdominated by Avicennia marina and Rhizophora mangle, with an important valueindex of 300 in both utilization and protection zones. In the protection zone, theShannon-Wiener diversity index was 0.95, indicating a low level of diversity.Based on the kao-kao system model, it was observed that the productivity of fishponds and fishermen's catch increased. Community income has significantlyincreased over the last five years, with an average net income of IDR 19,550,000every six months. The presence of mangroves also provides indirect benefits as acoastal protector from abrasion, with an estimated economic value of IDR247,950,000 per year.
Efficiency of Timber Skidding Operation in Pasoh Forest Jelebu, Peninsular Malaysia Gandaseca, Seca; Lantobong, Jusma Wati; Mohd Hasmadi Ismail; Rahmawaty
Journal of Sylva Indonesiana Vol. 8 No. 2 (2025): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v8i2.20024

Abstract

Timber skidding is one of the most important elements of forest harvesting. The forest harvesting process includes all operations from tree cutting and logging to a mill, rail depot, or ship dock. Efficiency is the ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. For skidding operation, widely using crawler tractors as a medium in transporting logs to the temporary log yard requires attention from many sides. This is because it may affect productivity and the time consumed to do the work. The objective of this study was to analyze the relationship between distance, time, and productivity of skidding operation by crawler tractor and take place at Compartment 65 and 66 Pasoh Forest Reserve, Jelebu, Peninsular Malaysia. Thus, in this study, the distribution of work elements on time consumption shows that skidding seems to consume more time compared to other processes, since crawler tractor workers manually do the work. As a result, the average volume per trip, productivity, and time for skidding using a crawler tractor at the initial skidding area close to the landing are 27.74 m3, 54.65 m3, and 13.5 minutes, respectively. The total distance travelled by the crawler tractor to handle the load also influenced the efficiency of time and consequently affected the rate of productivity. The harvesting operation in Pasoh Forest Jelebu, Negeri Sembilan, Peninsular Malaysia is still well managed to produce timber products, and the skidding operation in this site is efficient and productive. As the suggestion, more study need to be conducted in vary in term of distances, times, and volumes, and in various conditions representing the timber skidding operation in this area.
Co-Authors ABDUL RAUF Aditya, Haidar Fari Ahmad Mustapha Mohamad Pazi, Ahmad Mustapha Mohamad Aisar Novita Albert Empawi Tindit, Albert Empawi Hagus Tarno Hamdoen, Fadel Muhammad Izyan Alwani Janter Bronson Samosir Karam, Daljit Singh Lantobong, Jusma Wati Laurna Nyangon, Laurna Mahawan Karuniasa Mochtar Lutfi Rayes Mohd Hasmadi Ismail Norsyazwani Izzati Mohd Yahya Paiman Bawon Pakhriazad Hassan Zaki Poppy Lumban Gaol Rahmawaty Rahmawaty, Rahmawaty Retna Astuti Kuswardani Ridwanti Batubara Rizky Amalia Salomo Bobby Fernando Sihombing Silvia Nora, Silvia Simanjuntak, Friska Irene Sintike Frastika Sitanggang, Miduk SITI LATIFAH Surip Mawardi Syamsulhadi, Mochammad Wijoyo, Hadi