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UTILIZING BIOTOPE PRINCIPLES AND TECHNIQUES FOR SUSTAINABLE CULTIVATION AND DOMESTICATION OF AN ENDANGERED PAROSPHROMENUS DEISSNERI Valen, Fitri Sil; Notonegoro, Hartoyo; Sitorus, Rostiar
Journal of Aquatropica Asia Vol 9 No 2 (2024): Journal of Aquatropica Asia
Publisher : Jurusan Akuakultur, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/joaa.v9i2.6122

Parosphromenus deissneri is a freshwater species known exclusively from Bangka Island, Indonesia. According to the IUCN Red List of Threatened Species in 2020, this species is endangered, and the population continues to decrease due to the consequences of open-pit tin mining on Bangka Island harming its natural ecosystem. Despite the fact that this species is regarded as endangered, no known conservation and domestication initiatives have been made to enhance its number in the wild. In this study, we propose to do domestication of P. deissneri using biotope principles and techniques to increase the P. deissneri capacity for adaptation and reproduction since these species believe they are in their natural habitat. This study was carried out from April to September of 2023 at Bangka Belitung Endemic Fish Laboratory. We designed the biotope concept using an aquarium with dimensions 200 cm x 100 cm x 50cm. Biotopes are equipped with aquatic plants, roots, twigs, dead leaves, sand, rocks, gravel, and water containing natural plankton as biotic and abiotic elements. In this study, a Parosphromenus deissneri broodstock of 20 individuals (10 males and 10 females) was maintained for a 5-month period, resulting in an 80% survival rate. During the study, one mating pair successfully produced approximately 14 eggs, 8 of which hatched. Following a 2-month larval development phase, 4 fry survived to adulthood, yielding a survival rate of 25% relative to the total number of hatched eggs. These results underscore the necessity for refined husbandry practices and optimal environmental conditions to improve fry survival and enhance reproductive success in future breeding efforts.

Application of different doses of nitrogen fertilizer to improve the growth and yield of pakchong grass in post-tin mining land Lestari, Tri; Rahmatika, Nurhuda; Pratama, Deni; Sitorus, Rostiar
Journal of Degraded and Mining Lands Management Vol. 12 No. 3 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.123.7681

Post-tin mining land has low nutrient content, which makes it harder for plants to absorb macro and micronutrients. Adaptive plants such as pakchong grass and the application of nitrogen fertilizer are solutions for cultivating and increasing post-tin mining land productivity. This research was conducted to identify the most efficient doses of nitrogen fertilization for pakchong grass in post-tin mining land. This research was conducted in Kampoeng Reklamasi Air Jangkang, Bangka Regency. This research used a randomized block design consisting of 4 treatments, i.e., A0 (without N fertilizer), A1 (6.125 g N/plant), A2 (7.875 g N/plant), and A3 (9.875 g N/plant). Data obtained were subjected to analysis of variance (ANOVA) followed by the Least Significant Difference (LSD) test at a 95% significance level. The results showed that the application of different doses of nitrogen fertilizer significantly affected the dry weight of the canopy and yield per plot. The treatment of A3 (9.875 g N/plant) had the highest yield but was not significantly different from the A1 treatment (6.125 g N/plant) and A2 treatment (7.875 g N/plant). The highest fat content was in the A2 treatment (7.875 g N/plant), and the highest total N and protein content was in the A treatment (6.125 g N/plant). The best nitrogen treatment in this research was A1 (6.125 g N/plant), which had lower nitrogen treatment but had similar results with the higher dose of other nitrogen fertilizer, making it more efficient for nitrogen fertilization in post-tin mining land.

Ethnic Mosaic: Analysis of Management and Productivity of Lowland Rice In South Bangka Regency Sitorus, Rostiar; Zulkarnain, Iskandar; Wahyuni, Winda
Jurnal Ilmiah Manajemen Kesatuan Vol. 13 No. 3 (2025): JIMKES Edisi Mei 2025
Publisher : LPPM Institut Bisnis dan Informatika Kesatuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37641/jimkes.v13i3.3401

This study investigates the relationship between ethnic diversity and the management practices and productivity of lowland rice farming in South Bangka Regency. The region's multi-ethnic composition—comprising Malay, Javanese, Bugis, and other ethnic groups—offers a unique context to explore how cultural backgrounds influence agricultural decisions and outcomes. Using a mixed-methods approach involving field surveys, in-depth interviews, and productivity data analysis, the study identifies key differences in land preparation, input usage, labor organization, and post-harvest handling across ethnic groups. The findings reveal that ethnic-based variations in farming knowledge and social capital significantly affect productivity levels. The study concludes by recommending culturally tailored agricultural extension strategies to improve rice productivity in ethnically diverse communities.

UTILIZING BIOTOPE PRINCIPLES AND TECHNIQUES FOR SUSTAINABLE CULTIVATION AND DOMESTICATION OF AN ENDANGERED PAROSPHROMENUS DEISSNERI Valen, Fitri Sil; Notonegoro, Hartoyo; Sitorus, Rostiar
Journal of Aquatropica Asia Vol 9 No 2 (2024): Journal of Aquatropica Asia
Publisher : Jurusan Akuakultur, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/joaa.v9i2.6122

Parosphromenus deissneri is a freshwater species known exclusively from Bangka Island, Indonesia. According to the IUCN Red List of Threatened Species in 2020, this species is endangered, and the population continues to decrease due to the consequences of open-pit tin mining on Bangka Island harming its natural ecosystem. Despite the fact that this species is regarded as endangered, no known conservation and domestication initiatives have been made to enhance its number in the wild. In this study, we propose to do domestication of P. deissneri using biotope principles and techniques to increase the P. deissneri capacity for adaptation and reproduction since these species believe they are in their natural habitat. This study was carried out from April to September of 2023 at Bangka Belitung Endemic Fish Laboratory. We designed the biotope concept using an aquarium with dimensions 200 cm x 100 cm x 50cm. Biotopes are equipped with aquatic plants, roots, twigs, dead leaves, sand, rocks, gravel, and water containing natural plankton as biotic and abiotic elements. In this study, a Parosphromenus deissneri broodstock of 20 individuals (10 males and 10 females) was maintained for a 5-month period, resulting in an 80% survival rate. During the study, one mating pair successfully produced approximately 14 eggs, 8 of which hatched. Following a 2-month larval development phase, 4 fry survived to adulthood, yielding a survival rate of 25% relative to the total number of hatched eggs. These results underscore the necessity for refined husbandry practices and optimal environmental conditions to improve fry survival and enhance reproductive success in future breeding efforts.

IDENTIFIKASI FAKTOR-FAKTOR YANG MEMPENGARUHI PENDAPATAN PETANI PADI SAWAH Rahman, Syafari Nur; Sitorus, Rostiar; Karsiningsih, Eni
WIRATANI Vol 8, No 1 (2025): Juni 2025
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/wiratani.v8i1.539

Pola Konsumsi Beras Berdasarkan Golongan Pendapatan Rumah Tangga Masyarakat di Kecamatan Gerunggang Kota Pangkalpinang Shinda, Shinda; Sitorus, Rostiar; Setiawan, Iwan
Mimbar Agribisnis : Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis Vol 10, No 2 (2024): Juli 2024
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ma.v10i2.14700

The aim of this research is to identify types of informal consumption in Gerunggang District, Pangkalpinang City based on informal income categories and is to identify factors that influence informal consumption in single household households in Gerunggang District, Pangkalpinang City. Types of informal consumption in Gerunggang District. Pangkalpinang City based on informal income categories and factors that influence informal consumption in household households in Gerunggang District, Pangkalpinang City. The technique used was purposive sampling, and the sample size was 108 people, each of which was divided into three categories based on the data. data collection period. A total of 36 samples have been classified as low, 36 samples as medium, and high. Least Squares (OLS) is used in multiple line regression analysis as a data cleaning method. to organize the data, SPSS 25 and Microsoft Excel 2010 were used. The results of the research show that in the low income group, the factor that influences meat consumption in rural areas in Gerunggang Regency is the number of family members; in the high income group, the factor is profit.

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