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INDONESIA
Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : https://doi.org/10.31258/jnat
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Physics
Jurnal Natur Indonesia has been published since 1998, is a science journal that presents articles on research results, thoughts and views from researchers and experts in biosciences (basic science), including biology, physics, chemistry and mathematics. Jurnal Natur Indonesia involves reviewers who review each article according to their field of knowledge. The names and institutional origins of the Reviewers are listed on the normal two pages of each volume of publication. The journal is published twice a year, in April and October. In the field of biosciences (basic science) Biology, Physics, Chemistry, Mathematics.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 84 Documents
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Study of Waves, Currents and Coastline Changes in North Rupat Sub-District, Bengkalis Regency, Riau Fathurrahman, Febri; Mubarak, Mubarak; Nurrachmi, Irvina; Rifardi, Rifardi; Ilahi, Ilham
Jurnal Natur Indonesia Vol. 23 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.1.42-49

Abstract

The Malacca Strait, between the island of Sumatra and the Malaysian Peninsula, is classified as an international strait. One of the Indonesian islands in the Malacca Strait is Rupat Island, which is the outermost small island of the Indonesian territory and has a sub-district directly facing the Malacca Strait, namely North Rupat Sub-district resulting in the phenomenon of shoreline change in this area. The location that became the research object is the coastal waters of the North Rupat District. The research aimed to investigate the coastline changes in Rupat Utara over the past 20 years and analyze the physical oceanographic factors affecting the area. The research method used in the research is survey methods. Primary data collected were wave, tidal, and sediment data. Sediment sampling was carried out using a sediment grab at the research stations, with each station being sampled three times. The sediment samples were collected at intervals of 50 meters between sampling points at each station. The results of the analysis of changes in the coastline of North Rupat District carried out using DSAS, and it can be seen that in the period 2003 to 2023, there was a change in the coastline, which was dominated by the accretion process with the highest accretion value at 252.80 m, the lowest abrasion value was -111.29 m, and an EPR value of 2.20 m/year. The current velocity and wave height in these waters are categorized as low. The sediment fraction in this area falls into the sand and mud categories
Analysis of Mangrove Forest Changes Using Satellite Image Data on Rupat Island Agusti, Dinda Roanna; Mubarak, Mubarak; Efriyeldi, Efriyeldi; Rifardi, Rifardi; Mulyadi, Aras; Zulkifli, Zulkifli; Ilahi, Ilham
Jurnal Natur Indonesia Vol. 23 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.1.50-57

Abstract

Mangrove forest vegetation is spread across several islands in Indonesia, including Rupat Island. Rupat Island is the outermost island in Riau Province, close to Malaysia, and directly faces international waters, namely the Malacca Strait. Rupat Island has two sub-districts, namely Rupat District and North Rupat District. Rupat Island has a very extensive mangrove forest and has a significant contribution. Monitoring changes in mangrove forests is one way of controlling the mangrove forest ecosystem. This research aims to analyze changes in mangrove vegetation area and mangrove density using the MVI algorithm in 2013 and 2023 on Rupat Island, Bengkalis Regency. This research was conducted in the mangrove forest ecosystem on Rupat Island, Bengkalis Regency, Riau Province. The method used in this research is a survey method with observation and field data collection (ground check). Based on image processing results, the area of ​​mangrove vegetation was 13903.03 ha (2013) to 11748.66 ha (2023) and experienced a reduction of 2154.37 ha. Classification based on MVI in sparse density has an area of ​​5872.46 ha (2013), decreasing to 3422.05 ha (2023); medium density has an area of ​​2188.84 ha (2013), increasing to 3334.64 ha (2023), and dense density has an area of ​​5841.73 ha (2013) reduced to 4991.97 ha. Over 10 years, the density of mangrove vegetation has increased in the medium class and tends to decrease in the sparse and dense classes. Based on calculations, the density of mangroves on Rupat Island falls into the tree category, ranging from 1150.00 ind/ha to 1450.00 ind/ha, which is considered good, and the sapling category ranges from 366.67 ind/ha to 1050.00 ind/ha, which is classified as good.
Utilization of Sesai as an Environmentally Friendly Planting Media: Case Study of Buruk Bakul Village, Bukit Batu Subdistrict, Bengkalis Regency, Riau Fadliyati, Refo; Sumiarsih, Eni; Budijono, Budijono
Jurnal Natur Indonesia Vol. 23 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.1.63-67

Abstract

Indonesia has abundant natural resources, including the Bengkalis coastal area. Bengkalis waters are the largest in Riau Province, with a water area of 677,472.44 km2. One of the coastal areas is Buruk Bakul Village in Bukit Batu District, Bengkalis Regency, which has an area of about 68.05 km2. However, when viewed from the condition of the waters, marine debris poses a threat. Organic waste or sesai inhibits the growth of mangrove saplings and even causes death in mangrove saplings. The location of the research object is the coast of Buruk Bakul Village. The research objectives are to determine the potential of sesai to be used as an organic planting medium and to know the community's social perceptions and economic perceptions towards sesai as a planting medium. The research method used in this research is the survey method. Primary data included the results of NPK analysis on sesai, questionnaires, interviews, and observations in the field. Purposive sampling was carried out using the Geographic Information System (ArcGIS) along the coast of Buruk Bakul Village to measure sesai potential. The analysis results show the abundant potential of sesai, which can increase utilization into environmentally friendly planting media with the availability of a total volume of sesai of 39,029.5 m³ with an average volume per location of 2,295.8 m³. NPK content analysis (0.41%, 19.44 mg/100g, and 21.84 mg/100g) can be used as planting media. Social perception showed community initiative through survey results, which showed that 64% of respondents responded well. Economic perception by utilizing sesai as a planting medium can provide a profit of IDR.3,000 per unit, opening up opportunities for increased income for the people of Buruk Bakul Village
Induction of Organogenesis and Regeneration Species Tagetes erecta In Vitro Apriliani, Elisa; Sukma, Dewi; Sudarsono, Sudarsono; Syukur, Muhammad
Jurnal Natur Indonesia Vol. 23 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.1.58-62

Abstract

Marigold (Tagetes erecta) from the Asteraceae family is well-known for its various uses as cut flowers, potted plants, ornamental plants, medicines, dyes, and biopesticides. Micropropagation and optimization of in vitro regeneration of T.erecta species provide opportunities for plant propagation and utilization of biotechnology in plant breeding. This study evaluated the regeneration efficiency of in vitro plantlet leaf explants with different combinations of IAA and BAP concentrations in organogenesis induction media. IAA concentration affects the growth of adventitious shoots on explants. Decreasing IAA concentration affects the percentage of shoot growth, roots, and average number of roots in organogenesis induction media. Meanwhile, adding cytokinins to the induction media will modulate auxin movement during organogenesis and plant cell regeneration. Leaf explants on Murashige and Skoog (MS) media supplemented with 2.8 µM IAA + 31.0 µM BAP showed shoot growth reaching 58%, with root growth reaching 32%. Meanwhile, using lower BAP 2.8 µM IAA + 13.3 µM BAP resulted in 63% of explants forming shoots with a lower percentage of root growth. Increasing the concentration of IAA (5.7 µM + 13.3 µM BAP) showed a root formation response reaching 61% with a smaller number of shoots (48%). The explant response began with the explant part differentiating to form a callus with a growing point that would form yellowish-green shoots (RHS / Fan3-N144-C) at 28 days of induction
The Effect of Developmental Stages on the Photosynthetic Parameters of the Melon Nifi, Agayev Faxraddin; İlham, Allahverdiyev Elmar; Hajı, Mammadova Khurshid; Agil, Yolchueva Emina
Jurnal Natur Indonesia Vol. 23 No. 2 (2025): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.2.68-73

Abstract

This study explores the fluctuations in key photosynthetic parameters in two high-potential melon (Cucumis melo L.) cultivars—Gunash and Sadaf—grown in open-field conditions in the Absheron region. The research analyzes a range of physiological and biochemical traits, such as leaf area, photosynthetic potential (PP), net photosynthetic productivity (NPP), specific leaf surface density (SLSD), concentrations of plastid pigments, the coefficient of economic photosynthetic efficiency (CEEP), overall economic efficiency (CEE), and the accumulation of both fresh and dry biomass. Results show a steady rise in SLSD and biomass (both crude and dry) from the vegetative phase to fruit development and full ripening. The early-ripening Gunash cultivar displayed the highest gains during early fruit formation, while the mid-ripening Sadaf cultivar reached peak values during full ripening. Significant differences in NPP, SLSD, and CEE were found throughout the plant's life cycle, with peak values observed at the mass ripening stage in both varieties. Additionally, levels of chlorophyll and carotenoids in the leaves showed a three-phase peak pattern, with each phase varying by cultivar
Analysis of Watermelon (Citrullus vulgaris Schard.) Farming Business in Amara Jaya Farmer Group in Binawidya District, Pekanbaru City Khaswarina, Shorea; Kusumawaty, Yeni; Sihombing, Andre Saputra Hasiholan
Jurnal Natur Indonesia Vol. 23 No. 2 (2025): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.2.74-78

Abstract

This study analyses watermelon farming in the Amara Jaya Farmer Group in Binawidya District, Pekanbaru City, focusing on farmer characteristics, conformity of cultivation techniques with Good Agricultural Practices (GAP), as well as analysis of costs, revenues, and farming efficiency. Watermelon is a horticultural commodity that has the potential to increase income, but management efficiency is very important. This analytical descriptive research used a case study approach with in-depth interviews with five farmers and secondary data. Results showed an average total production cost of IDR 244,646,434 per hectare per growing season, with an average total revenue of IDR 119,833,333.40 per hectare. The average net income was IDR 125,296,100.00 per growing season. The R/C ratio of 0.184 indicates that the watermelon farm has not broken even and is still losing money, despite the gross profit margin per kilogram
Analysis of Business Costs of Western Honey Bee (Apis mellifera) in Teluk Rimba Village, Koto Gasib District, Siak Regency Suhada, Nur; Sribudiani, Evi; Isma, Olla; Mohta, Gandhiko; Darlis, Viny Volcherina; Lestari, Ika
Jurnal Natur Indonesia Vol. 23 No. 2 (2025): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.2.126-135

Abstract

In Teluk Rimba Village, Koto Gasib Subdistrict, Siak Regency, there are honey bee (Apis mellifera) businesses. These consist of five owners: Depra Group and Abdullah Madu Riau, established in 2020, and Young Daffa Madu, Madu Munthe Family, and Tunas Mekar, established in 2024. The beehives are located in the Industrial Plantation Forest (HTI) area of PT. Arara Abadi, Minas-Rasau Kuning District. This study focuses on cost analysis and business feasibility. No previous research has provided information on the current condition, business overview, cultivation practices, or feasibility of the honey bee ventures. This research analyzes the production costs, revenues, income, and feasibility of the Apis mellifera honey bee business in Teluk Rimba Village, Koto Gasib Subdistrict, Siak Regency. This research uses a mixed-method approach combining both qualitative and quantitative methods. The data analysis includes descriptive analysis, cost analysis, revenue, income, and Revenue Cost Ratio (R/C ratio) analysis. The results show that the total production cost of the Apis mellifera honey bee business from January to December 2024 was IDR 492,393,331. The total revenue for the same period was IDR 1,055,775,000. The net income generated was IDR 563,381,669. The R/C ratio analysis for the five honey bee businesses, Young Daffa Madu, Madu Munthe Family, Tunas Mekar, Depra Group, and Abdullah Madu Riau, shows that the total revenue divided by total production cost yielded a value of 2.14. This indicates that the honey bee business is profitable and feasible for development, as the R/C ratio value exceeds 1
Modeling of Water Surface Elevation Using MIKE 21 Based on Rupat Strait Bathymetric Data Ahmad, Alianisa; Mubarak, Mubarak; Tanjung, Afrizal; Rifardi, Rifardi; Ilahi, Ilham
Jurnal Natur Indonesia Vol. 23 No. 2 (2025): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.2.79-84

Abstract

The Rupat Strait, a strategically crucial marine channel separating Sumatra Island from Rupat Island, exhibits complex hydrodynamic characteristics influenced by tidal propagation from the adjacent Malacca Strait. As a vital shipping corridor, the strait's navigational safety is fundamentally governed by its bathymetric profile and tidal regime. This study implements an integrated methodological framework combining in situ bathymetric surveys with MIKE 21 hydrodynamic modeling to assess morphological dynamics quantitatively. Systematic validation of model outputs against field measurements revealed significant spatial variations in seafloor topography, including pronounced shallowing (>6.6 m) and substantial deepening (≤17 m) at distinct locations. Concurrent analysis of tidal data demonstrated extreme water level fluctuations, ranging from -2.36 m during the lowest astronomical tides to +6.28 m during peak tidal surges. These geomorphological alterations appear correlated with anthropogenic pressures, particularly intensive shipping traffic and coastal zone modifications, suggesting a coupled natural-anthropogenic forcing mechanism governing the strait's evolving morphodynamics. The findings highlight the critical need for ongoing monitoring to ensure maritime safety and sustainable coastal management in this rapidly changing marine environment
Strategy for Developing Ecotourism in the Imbo Putui Customary Forest Petapahan, Tapung District, Kampar Regency, Riau Riani, Imelda; Sumiarsih, Eni; Syafii, Muhammad
Jurnal Natur Indonesia Vol. 23 No. 2 (2025): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.2.96-102

Abstract

Forests are important in human life because they have ecological, social, and economic functions. One way to utilise forest environmental services to preserve the environment and increase income is to manage them as ecotourism sites. One area with ecotourism potential that needs to be developed in Kampar Regency is the 251-hectare Imbo Putui Customary Forest. Despite its diverse potential, the development of Imbo Putui Customary Forest Ecotourism faces several challenges, such as human resources for management and tourism infrastructure facilities. The location of this study is the Imbo Putui Petapahan Customary Forest Ecotourism site. This study aims to analyse the existing ecological, social, and economic conditions of the Imbo Putui Customary Forest Ecotourism potential and formulate a development strategy for the Imbo Putui Petapahan Customary Forest Ecotourism. This study uses a mixed methods approach with a qualitative dominance. Primary data was collected directly from the field through interviews, questionnaires, and observations. The existing conditions were measured using purposive sampling and qualitative descriptive analysis. Meanwhile, the ecotourism development strategy was formulated using SWOT analysis. The analysis results show that the strategic position for implementing Imbo Putui Customary Forest Ecotourism is quadrant I, namely the S-O (Strengths-Opportunities) strategy. The strategies that can be applied are to develop integrated tourism packages based on attractions, activities, and digital promotion; utilise local wisdom and area zoning as ecotourism educational material; optimise forest legality to expand stakeholder cooperation and program support; and make tree diversity and flora and fauna protection the basis for educational tourism and research.
Impact of Climate on Soil Wind Erosion in Karabakh Plain Mammadova, Ulviyya
Jurnal Natur Indonesia Vol. 23 No. 2 (2025): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.2.103-107

Abstract

Soil wind erosion in the Karabakh Plain has become a critical environmental concern due to shifting climatic patterns and anthropogenic pressures. This study explores the influence of key climate variables, including wind intensity, rainfall, and temperature fluctuations, on soil erosion dynamics. The research identifies the most erosion-prone periods and regions by evaluating historical climate data and local soil properties. The analysis emphasizes the importance of vegetation cover, optimized land use, and adaptive practices in mitigating soil degradation. However, implementing these measures faces several obstacles, such as limited financial and technical resources, insufficient public awareness, and the intricate interaction between climate and soil systems. The study advocates for a multifaceted risk management approach integrating innovative agricultural techniques, active community participation, and supportive policy frameworks to enhance soil health and reduce erosion. The insights offered a foundation for developing targeted strategies to combat wind erosion and foster long-term environmental sustainability. Furthermore, the proposed measures are adaptable to similar challenges in other semi-arid areas, enabling a broader application of these solutions to enhance resilience against soil erosion.

Page 8 of 9 | Total Record : 84

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