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Isolasi Bakteri Pendegradasi Minyak Dari Perairan Sekitar Pelabuhan Bengkalis Provinsi Riau Andhini, Nadia; Nursyirwani, Nursyirwani; Nedi, Syahril
Jurnal Perikanan dan Kelautan Vol 23, No 1 (2018)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.23.1.15-20

Abstract

Oil degradation bacteria can be found in various habitats in the marine environment including in the waters around the harbor. This study aims to isolate the oil degrading bacteria from waters around the port of Bengkalis and test its ability to degrade crude oil. Isolation of the degrading bacteria has been done from February to April 2017 at the Marine Microbiology Laboratory, Department of Marine Science, Faculty of Fish-eries and Marine University of Riau. The amount of oil degrading bacteria ranges from 0.2 x 105 to 8.9 x 105 CFU/ml. The isolation result was obtained by 10 isolates of oil degradation bacteria, ie BM1a, BM1b, BM1c, BM1d, BM7a, BM7b, BM7c, BM7d, BM14a and BM14b. Identification based on morphological, physiological and bio-chemical characteristics of each isolate, all isolates were round and elevated, six were white in color, three were yellow, one cream-colored isolate, eight isolates with slip-pery edges and two isolates with periphery waves, seven isolates were indol positive, two isolates produced H2S, four isolates were methyl red positive, all isolates were motile, capable of fermentation of glucose and sucrose in sugar test, able to ferment citrate, positive catalase and Gram negative bacteria. For degradation test only five bacterial isolates were selected of BM1a, BM1b, BM1c, BM7a and BM7d. The highest degradation at 1% concentration was indicated by isolate BM1a, the highest degrada-tion at 2% and 3% concentrations was indicated by BM1c isolate. Therefor, bacteria isolate capable of degrading the highest crude oil was BM1c.
LACUBLACUBA Lamp Innovation to Enhance Gill Net Fisheries in Central TapanuliA Lamp Innovation to Enhance Gill Net Fisheries in Central Tapanuli Fuah, Ricky Winrison; Hutagalung, Amanda Isa Putra; Rahayu, Rosi; Muna, Zakyatul; Andhini, Nadia; Khobir, Muhammad Latiful; Fazri, Kurniawan
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 2, July 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.43579

Abstract

Most of the Central Tapanuli Regency area is on the coast, which is part of the Indian Ocean waters and has great potential in the fishing industry, especially marine fisheries. One of the fishing gears widely used by fishermen in Central Tapanuli is the gill net.  Although the amount of marine fisheries resources in Central Tapanuli is quite abundant, the catch of salam net fishermen often fluctuates, so fishing aids are needed to increase catches, one of the efforts made is using LACUBA. This research was conducted from February to April 2024 in Sibolga Bay, Central Tapanuli. This study used a completely randomised design (CRD), with the first 30 metres of gill net treatment with LACUBA and the remaining 30 metres without LACUBA treatment with a total net length of 60 metres. The results showed that the catch of gill nets using LACUBA influenced the catch, the total catch was 16,845 grams, without LACUBA 8,290 grams for 14 times. Gill nets with LACUBA can increase catches compared to without LACUBA, due to the addition of attractants to the net, so that fish including positive phototaxis will be caught in the net, besides that fish that are looking for prey are also caught because they want to prey on their food in the gill net area.
Optimization of Tidal Transects and Traps for Mapping the Population of Mud Crabs (Scylla spp.) in Kalangan River, Tapanuli Tengah Khobir, Muhamad Latiful; Fazri, Kurniawan; Muna, Zakyatul; Andhini, Nadia; Fuah, Ricky Winrison
Jurnal Perikanan Terpadu Vol 6, No 1 (2025): Jurnal Perikanan Terpadu Volume 6 Nomor 1
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jpterpadu.v6i1.12006

Abstract

This study investigates the effectiveness of combining the low-tide transect method with the use of crab pots to map the spatial distribution of mangrove crabs (Scylla spp.) in the Kalangan River, Central Tapanuli. Mangrove crabs are ecologically and economically significant species in coastal environments, yet limited data exist on their spatial population dynamics. An exploratory survey was conducted over a period of one month across three transect sites using standardised 1×1 meter PVC frames and systematically placed crab pots. Observations included species composition, carapace size, and habitat substrate type. The findings revealed that Scylla olivacea dominated the catch (68%), with the highest density recorded at transect 2 (0.86 individuals/m2), characterised by fine, sandy-muddy substrate and moderate mangrove cover. Transect 1 showed the lowest density (0.63 individuals/m²), likely due to degraded mangrove vegetation and coarse sandy substrate. A positive correlation was observed between tidal depth and catch abundance. The results suggest that this integrated method offers a reliable baseline for assessing mangrove crab populations and can inform sustainable coastal resource management practices.