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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 Potential and Marine Ecotourism Development at Pasir Jambak Beach Padang City Putri Hanryani; Syafruddin Nasution; Dessy Yoswaty
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.15-20

Abstract

Marine tourism is a tourism activity based on marine aspects in coastal and marine waters Pasir Jambak Beach is one of the areas that have the potential to be developed into a marine ecotourism object in Padang City. The purpose of this research was to find out the main marine ecotourism object owned by Pasir Jambak Beach, its support capability, and its development strategy. This research was conducted from July to October 2022 at Pasir Jambak Beach, Pasir Nan Tigo Village, Koto Tangah District, Padang City, West Sumatra Province. The method used was a survey method with the observation of the tourism objects that existed at Pasir Jambak beach, measuring the area large which could be utilized and interviewing the tourism businessmen. The results showed that the main marine ecotourism object of Pasir Jambak Beach is the beauty of the beach scenery with clear waters, clean, fine, and sloping sand, and the phenomenon of sunset. The total carrying capacity that can be physically accepted by Pasir Jambak beach is 26,490 people per day with different activities and times. Based on SWOT analysis, the ecotourism development strategy for Pasir Jambak beach is: (1) Development of marine tourism with the concept of ecotourism (2) Increase tourism promotion and improve the quality of human resources through education and training. (3) Form a special team to supervise marine ecotourism development activities, and develop research and conservation potential (4) Organize counseling on the importance of environmental conservation, the dangers of pollution, natural disaster management, and the development of creative industries.
Genetic Change of Pharella acutidens Influenced by Pb and Cd Metals in Rupat Strait Waters Tri Vani Bernadetha Ginting; Syafruddin Nasution; Irwan Effendi
Jurnal Natur Indonesia Vol. 19 No. 2 (2021): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.19.2.43-50

Abstract

Rupat Strait related to the Strait of Malacca is a national and international shipping lane and makes the region affected by anthropogenic activities that result in a decrease in the quality of the waters such as the increasing amount of heavy metal content. The most easily contaminated  organism of heavy metals is bivalves due to and its low mobility, bivalves being filter feeders, and the ability to accumulate contaminants,. The purpose of  this study was to look at genetic changes in bivalves  (P.acutidens) contaminated by heavy metals. The study was conducted from February to March 2021. Bivalve sample was collected from the waters of Rupat Strait and sample analysis was conducted in the Marine Biology Laboratory and Genetics Laboratory of Riau University. Bivalve DNA is isolated with Geneaid Tissue Genomic DNA Mini Kit. DNA isolation results were then carried out PCR process and sequencing process was carried out in PT. Genetika Science Indonesia. The results of study show that sequencing results obtained by samples derived from Selinsing have the most changes in the composition of nitrogen bases compared to samples from the other two stations
Heavy Metal Content in Sediment and Hora Shell (Cerithidea obtusa) in Panipahan Waters, Rokan Hilir, Riau Indra Wariski; Yusni Ikhwan Siregar; Bintal Amin
Jurnal Natur Indonesia Vol. 19 No. 2 (2021): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.19.2.29-36

Abstract

This research was carried out in March 2021 to analyze the heavy metal content of Pb and Cu in the sediment and flesh of the horn shell (Cerithidea obtusa). Sediment samples and horn shells were taken from the coastal waters of Panipahan, Panipahan Village, and Teluk Pulai Village, Rokan Hilir Regency, Riau Province. The method used in this research is a survey method. Sampling was determined by using purposive sampling at three different stations. The results of this study showed that the metal content of Pb and Cu was highest in sediments around residential areas (44.7150 g/g and 104.4200 g/g), while the horn shell was found in areas far from anthropogenic activities (2.4717 g/g and 8.6617 g/g). Differences in the metal content of Pb and Cu in the sediments were found between stations, while for horn shells there was no difference between stations. The metal content of Pb in the sediment did not show a significant effect (F < 0.05) Pb content in horn shells, as well as Cu. The results of the calculation of the PTWI (Provisional Tolerable Weekly Intake) value indicated that the horn shell in the waters is acceptable for consumption.
The Carrying of Capacity of the Pangkal Babu Mangrove Forest on the Abundance of Fish Resources and the Economy of the People of Tungkal Satu Village, Tanjung Jabung Barat Tedy Azmi Nasution; Tedjo Sukmono; Rifli Rindes; Hutwan Syarifuddin
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.21-28

Abstract

The Pangkal Babu Mangrove Forest has an important role in a fish habitat that is closely related to the livelihoods of fishermen so it has an overall economic relationship. This study aims to analyze the condition of mangrove forests, the triangulation relationship between mangrove forests and fish resources, and the community's economy as well as forms of local wisdom in protecting and preserving mangrove forests. This research was conducted in the Pangkal Babu Mangrove forest area, Tungkal Ilir District, West Tanjung Jabung Regency. The method in this study is a survey method. The sampling technique for the condition of the mangrove forest was using the Line Transect Plot method at 3 different stations. The data analyzed included the density of mangrove forests, fishery resources, the economy, and the local wisdom of the community. The results showed that at station I the condition of mangrove vegetation in Pangkal Babu was in moderate criteria with 1,467 trees/ha, station II was in very dense criteria with 3,367 trees/ha, and station III was in moderate criteria with 1,000 trees/ha. Fishery production for 5 years is 93,221 kg with many trips of 2,115 and a CPUE value of 44.13 kg/trip. Fishery production has exceeded the sustainable potential both biologically (MSY = 82,297 kg) and economically (MEY = 82,296 kg). The value of the coefficient of determination (R2) is 0.82 or 82%, which indicates that the fluctuation in fishery production is caused by the area of mangrove forests by 82%.
Utilization and Management of Demersal Fisheries in West Sumbawa Regency, West Nusa Tenggara Province Nunik Cokrowati; Haerul Jibriel; Baiq Raihanun; Erwansyah Erwansyah; Arzianingsih Arzianingsih; Rinto Basuki; Sri Ahdyanti; Budianto Budianto; Muhammad Junaidi; Nanda Diniarti; Dewi Putri Lestari; Laily Fitriani Mulyani
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.29-35

Abstract

Kabupaten Sumbawa Barat sea (KSB) is included in WPPNRI 573, including the Sawu Sea area, Indian Ocean waters, western Timor Sea, southern Java waters, and southern West Nusa Tenggara (KKP, 2014). The potential for demersal fish is in second place after pelagic fish with a total production of 103,501 tons from the potential fishery resources of WPPNRI 573 of 929,330 tons. An increase in catches that exceeds the sustainable potential value will reduce the catches of the next cycle and even have the potential for the extinction of fishery resources. So it must be overcome by making arrangements for the fishing effort to match the carrying capacity of the resource. The purpose of this study was to determine the sustainable potential of demersal fisheries and their level of utilization in West Sumbawa Regency. The methods used in the preparation of this study are field surveys and descriptive methods. The data obtained were analyzed statistically and descriptively, estimating fish stocks using the Schaefer Surplus Production Model. The results showed that the relationship between effort and CPUE obtained a linear equation y=8809-4.425x with R=0.024 which means that there is no relationship between fishing gear and catch. The catch is influenced by external factors such as seasonality and oceanographic conditions. The optimum effort value is 19,489.91 trips per year and the maximum sustainable catch is 8,584,332 kg per year. The last year's utilization rate value was 0.01% with an effort level value of 0.01%. The utilization rate is still relatively low, namely less than 100%.
Kidney Structure of Pangasianodon hypophthalmus Fed with Fermented Red Ginger and Infection by Aeromonas hydrophila Morina Riauwaty; windarti Windarti; Mariani Natalina Linggasari
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.36-41

Abstract

Red ginger contains antioxidants that can be used to enhance the immune system of fish. A study was conducted from September to December 2021 to understand the kidney structure of Pangasianodon hypophthalmus that was fed with red ginger fermented pellets. The fermented red ginger juice was obtained by juicing 500 g of red ginger in 3L water, boiled and mixed with 175 ml molasses, 65 ml yogurt, and 50 mg yeast, and then fermented for seven days. The fermented red ginger juice was obtained by juicing 500 g of red ginger for days. The fermented red ginger juice was mixed with fish feed pellets, namely T1 (150 mL/Kg), T2 (175 mL/Kg), T3 (200 mL/Kg), Cn (no red ginger juice and no infection), Cp (no red ginger juice and infection by A. hydrophila). The fish were reared in 30L aquaria. The fish sample was P. hypophthalmus fingerling (10-12 cm and 5-7 g), 10 fishes/aquarium. The fish were fed 3 times a day, adlibitum. On the 30th day, A. hydrophila was injected into the treated fish (0.1 ml of 108 cells/ml, subcutan injection). On the 14th after the infection kidney sample was collected and processed for histological study. The result has shown that there were differences in the kidney tissue of fish in each treatment. The worst condition was obtained in Cp, while the best was in T2. The renal structure of Cp showed abnormalities such as hemorrhage, cell necrosis, enlarged Bowman's cyst, and tubular degeneration, while the T2 kidney showed mild lesions specifically hemorrhagically. This fact indicates that fermented red ginger can improve fish immunity against A. hydrophila infection.
Optimization of TDZ Hormone on the Formation of Somatic Embryogenesis in Dendrobium Orchids (D.50TH Stage Beauty X D. Bobby Mesina) Didik Pudji Restanto; Iqbal Felayati; Wahyu Indra Duwi Fanata; Parawita Dewanti; Budi Kriswanto; Mohammad Nur Khozin; Mohammad Candra Prayoga
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.42-46

Abstract

The Dendrobium variety orchid is a plant that has rare potential and growth. This requires large amounts of seeds that can be propagated in vitro. This study aims to determine the effect of TDZ on the direct induction of somatic embryogenesis. The study was conducted using a completely randomized design (CRD) with one factor, namely media consisting of basal Murashige and Skoog (MS) media with growth regulator TDZ. Each treatment out of a total of seven treatments was repeated four times. The research was carried out from March 2022 to August 2022. The results showed that leaf explants (clonal) could only be induced in 2 treatments (1 mg/L and 1.5 mg/L) out of 28 experimental media treatment units. The earliest callus appeared in the 1 mg/L treatment with a growth time of 90 days after planting (DAP) and the earliest PLB appeared in the 1.5 mg/L treatment with a growing time of 45 days after planting (DAP), the percentage of explant growth that became PLB with 1.5 mg/L treatment resulted in a percentage of 20 % and the percentage of callus growth at 1 mg/L yields a percentage of 20%.
Supplementation of Turmeric Flour on Survival of Asian Redtail Catfish (Hemibagrus Nemurus) Desi Rahmadani Siagian; Benny Heltonika
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.47-54

Abstract

Asian redtail catfish culture activities are still constrained by the low survival rate in the seeds phase, one of the causes is cannibalism behavior. Several attempts have been made to improve the survival of these fish, and several studies have shown that turmeric powder can increase survival in several species. Based on this, this study aimed to evaluate the addition of turmeric flour with the coating method on the survival rate of Asian redtail catfish (Hemibagrus nemurus) seeds. This study used a completely randomized design using four treatments and was repeated three times. The treatment used was the supplemented turmeric flour to commercial feed which had a protein of 40%., the treatments were 0.0 g kg-1 (K), 2.5 g kg-1 (TK2.5), 5.0 g kg-1 (TK5.0), and 7.5 g kg-1 feed (TK7.5). The size of the Asian redtail catfish was 2.09±0.17 cm, with a stocking density of 3 L-1, and reared in an aquarium measuring 38x25x22 cm3. The study was conducted for 30 days and fed at satiation four times a day. The parameters measured were survival, cannibalism (cannibal type, cannibal index, normal death), and growth performance (absolute weight, absolute length, specific weight growth, and specific length growth). The results showed that TK5.0 was able to increase the survival rate and decrease the cannibalism index and normal death rate. Furthermore, the supplemented turmeric flour did not have an impact on the absolute weight, absolute length, specific growth rate, and specific length.
Utilization of Sago Liquid Waste Organic Fertilizer as a Culture Medium for Chlorella sp. Irwan Effendi; Mega Novia Putri; Ulfi Laili Astika; Ronal Kurniawan
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.55-62

Abstract

Chlorella sp. is a microalga that can grow and develop in wastewater media, including sago liquid waste that is not utilized and becomes a pollution material. This study aims to determine the utilization of sago liquid waste organic fertilizer on the growth of Chlorella sp. This research was conducted in February 2023 at the Marine Biotechnology Laboratory, Faculty of Fisheries and Marine Sciences, Riau University. The method used was the experimental method, by applying a complete randomized design (CRD) with four treatments and three replicates. The treatments were as follows: T0 (control), T1 (150 ml sago liquid waste), T2 (200 ml), and T3 (250 ml). The initial density of Chlorella sp. was 250 x103 cells/ml, and cell abundance observations were made for 14 days. The parameters observed were cell abundance, specific growth rate, and water quality (temperature and pH). The results showed that the utilization of sago liquid waste affected the abundance of Chlorella sp. 150 ml concentration and gave the best results on cell abundance of 233.33 x103 cells/ml with the peak population occurring on day 9. Water quality during the study was still in the normal range and can be tolerated for the growth of Chlorella sp, namely temperature ranging from 26-31o C and pH 6.2-8.0.
Identification of Types and Abundance of Solid Waste in Pangkalan Jambi Village, Bengkalis Regency Ayu Septiani; Aras Mulyadi; Bintal Amin
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.63-68

Abstract

Various human activities fulfill their welfare by producing food, drinks, and other goods which in turn can generate solid waste and liquid waste. Solid waste often contaminates residential areas, coastal mangroves, and the aquatic environment. In addition, the mangrove coast which is used as a tourist area can also receive solid waste as a result of local activities. This study aims to identify the type and abundance of solid waste in Pangkalan Jambi Village, Bengkalis Regency. This research was conducted in Pangkalan Jambi Village, Bukit Batu District, Bengkalis Regency. The method in this study is a survey method. Sampling technique using the quadrant transects method, each station was drawn as many as 5 transect, and each transect consisted of 5 plots with a quadrant plot size of 5 x 5 m2. The data analyzed included identifying the amount of solid waste, calculating the abundance of solid waste, analyzing the differences in the type and abundance of solid waste between stations, and measuring environmental parameters. The results showed that the highest abundance of solid waste was obtained during the weekend at 3.15 units/m2. The second highest was before the weekend at 2.53 units/m2, and the lowest solid waste was obtained during the weekend at 2.36 units/m2. Meanwhile, the highest weight of solid waste was found in the tourist area of the Mangrove Education Center (MEC), the second highest came from the community settlements of Pangkalan Jambi Village and the lowest was in the Mangrove Area of Pangkalan Jambi Village. The types of solid waste at the research location are plastic, metal, glass, rubber, wood, cloth, and others.

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