Article Per Year (5 Year)
p-Index From 2021 - 2026
1.383
P-Index
This Author published in this journals
All Journal Naturalis : Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan OCTOPUS : Jurnal Ilmu Perikanan Elkawnie JURNAL ENGGANO PENDIPA Journal of Science Education Jurnal Perikanan
Yar Johan, Yar
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Engineering Mathematics Other

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
Efektivitas Keberlanjutan Pukat Cincin (Purse Seine) di Pelabuhan Perikanan Pantai Pulau Baai Bengkulu Futra, Febby Dwi; Yuwana, Yuwana; Johan, Yar; Brata, Bieng; Bakhtiar, Deddy
Naturalis: Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan Vol. 13 No. 1 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/naturalis.13.1.33373

Abstract

The effectiveness of the sustainability of purse seines at the Baai Island Bengkulu Coastal Fishing Harbor must pay attention to all aspects, namely ecology, economics, technology, social and institutional. The aims of this research are 1) identifying Purse seine fishing gear, 2) analyzing the sustainability effectiveness of Purse seine, and 3) formulating strategies for the sustainability effectiveness of Purse seine. This research was carried out from March to September 2021 located at the Baai Island Coastal Fishing Harbor, Bengkulu. The research method used is a survey method. The data used are primary and secondary data. Respondents as sources of information came from government elements, fishermen and academic elements who used purposive sampling techniques. Data analysis used the Rapid Appraisal For Fisheries (RAPFISH) method. From the research results, it was found that the sustainability effectiveness of purse seines at the Baai Island Bengkulu Coastal Fishing Harbor was at a value of 65.31 (quite sustainable). The sensitive attributes that influence the effectiveness of sustainability are the application of environmentally friendly fishing technology, counseling for fishermen, employment status as a fisherman, and the use of destructive fishing tools. The policy strategy to increase the effectiveness status of the sustainability of Purse seine is carried out by means of the need to implement environmentally friendly fishing technology for Purse seine fishermen, outreach to fishermen who can provide good education to Purse seine fishermen. in the form of science and technology that can be applied by Purse seine fishermen, the welfare of Purse seine fishermen can be achieved if fishermen have employment status as full fishermen, and outreach to Purse seine fishermen regarding the prohibition on the use of fishing gear destructive Keywords: Aspects of soil, climate, land suitability, ponds, water quality and resources
Screening and Identification of Mangrove Plant Sonneratia alba Sm. Endophytic Bacteria From Enggano Island, Bengkulu Province Fatimatuzzahra, Fatimatuzzahra; Wibowo, Risky Hadi; Sipriyadi, Sipriyadi; Simanjuntak, Putri Hezekiel Claracia; Johan, Yar
Elkawnie: Journal of Islamic Science and Technology Vol 10, No 2 (2024)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v10i2.19120

Abstract

Abstract: The mangrove plants from Enggano Island are found in a well-preserved ecosystem. Mangroves contain secondary metabolite compounds that result from the interaction between plants and endophytic bacteria. This study aims to obtain endophytic bacterial isolates from the mangrove plant Sonneratia alba Sm. from Enggano Island and to assess bacterial diversity. Endophytic bacteria were isolated using grinding and then diluted with serial dilutions of 10-1, 10-3, and 10-5. The growing bacteria were purified using the quadrant streak method. They were then identified by observing colony morphology, Gram staining, and biochemical tests including catalase, motility, citrate, urea, and sugar fermentation tests. Bacterial identification was carried out using Bergey's Manual of Determinative Bacteriology. A total of 22 endophytic bacterial isolates were collected from the mangrove plant Sonneratia alba from Enggano Island, consisting of 4 genera: Bacillus, Marinococcus, Micrococcus, and Pseudomonas. There were 17 isolates closely related to the genus of Bacillus, 1 isolate closely related to the Marinococcus, 2 isolates closely related to the Micrococcus, and 2 isolates closely related to the Pseudomonas.Abstrak: Tumbuhan mangrove asal Pulau Enggano berada pada ekosistem yang masih terjaga. Mangrove memiliki kandungan senyawa metabolit sekunder yang merupakan hasil interaksi antara tumbuhan dan bakteri endofit. Penelitian ini bertujuan untuk memperoleh isolat bakteri endofit tumbuhan mangrove Sonneratia alba Sm. asal Pulau Enggano dan mendapatkan keanekaragaman bakteri. Isolasi bakteri endofit dilakukan dengan metode gerus, kemudian diencerkan dengan pengenceran berseri dari 10-1, 10-3, dan 10-5. Bakteri yang tumbuh dimurnikan dengan metode gores kuadran. Kemudian diidentifikasi dengan mengamati morfologi koloni, pewarnaan Gram, dan uji biokimia meliputi uji katalase, uji motilitas, uji sitrat, uji urea, uji gula-gula. Kemudian dilakukan identifikasi bakteri dengan buku Bergey’s Manual of Determinative Bacteriology. Total isolat bakteri endofit yang berhasil dikoleksi dari tumbuhan mangrove Sonneratia alba asal Pulau Enggano adalah sebanyak 22 isolat dengan keanekaragaman bakteri endofit yang terdiri dari 4 genus yaitu Bacillus, Marinococcus, Micrococcus, dan Pseudomonas. Isolat yang memiliki kedekatan dengan genus Bacilus adalah sebanyak 17, yang memiliki kedekatan genus Marinococcus hanya 1 isolat, yang memiliki kedekatan dengan genus Micrococcus adalah 2 isolat, dan 2 isolat memiliki kedekatan dengan genus Pseudomonas.
Strategi Pengelolaan Ekowisata Di Taman Wisata Alam Danau Tes Kabupaten Lebong Aptawan, Hendrivan; Cahyadinata, Indra; Johan, Yar; Yurike; Brata, Bieng; Saputra, Rizki
Naturalis: Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan Vol. 13 No. 2 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/naturalis.13.2.37197

Abstract

This study aims to analyze the management strategy of the ecotourism area in the Tes Lake Nature Tourism Park in an integrated and sustainable manner. This study was conducted from August to December 2021 at the Tes Lake Nature Tourism Park, Lebong Regency, Bengkulu Province. The study was conducted using a non-experimental method, namely descriptive exploratory. Community perceptions and participation in the management of the ecotourism area in the Tes Lake Nature Tourism Park were analyzed descriptively. Furthermore, the analysis of the management strategy for the Tes Lake Nature Tourism Park ecotourism area was carried out using a SWOT analysis. The results of the study showed that most respondents had good perceptions and participation in the natural ecosystem of Tes Lake, Lebong Regency. The position of the Tes Lake ecotourism management strategy is in quadrant I, namely the position with an aggressive strategy (S-O). In this case, the recommended strategy is to utilize the strengths of the Tes Lake ecotourism, namely beautiful natural scenery, cool and beautiful air, support from the Regional Government and the Balai Management, the friendliness of the surrounding community and the richness of local wisdom and customs. Keywords: Participation, Perception, Strategy, Tes Lake Ecotourism  
Analisis Dampak Usaha Tambak Udang Vanname (Litopenaeus Vannamei) Di Desa Selubuk Kecamatan Air Napal Kabupaten Bengkulu Ertanto, Bobby; Utama, Satria Putra; Bakhtiar, Deddy; Reflis; Johan, Yar
Naturalis: Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan Vol. 13 No. 2 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/naturalis.13.2.37188

Abstract

The existence of a new business will have an impact on the physical environment, social, economic and cultural. The purpose of this research is to evaluate the impact of vannamei shrimp farming business on environmental conditions physical and socio-economic conditions of the community. This research was conducted through a survey directly to the research location with stages including literature study, observation, interviews, documentation and data analysis. Water quality tetsing is carried out at UPTD Bengkulu Province DLHK Laboratory and adjusted to the quality standars of PP 22 year 2021. The test results of pH, NH, DO, salinity and odor at the outlet of the sewage pond are not meet quality standards. COD, BOD and color test results at location 1 (one) does not meet the quality standards. Shonnon-Winner Diversity Index Results biological parameters indicate that the water in location 1 (one) was in highly polluted condition and location 2 (two) is in a semi-heavy condition. Factor that cause it to happen the difference in the test results from the two locations is the remaining livestock manure and residual pesticides from plantations/farms around the site. Analysis the socio-economic impact of the community is carried out by Random Sampling through questionnaire to 40 families. The results of analysis of Rank Spearman’s economic impact shows a sufficient relationship. This is evidenced by the existence of a pond business vannamei shrimp there is an increase in the welfare of the community and the development of community-owned businesses. Spearman Rank analysis results social impact shows a strong relationship. Vannamei shrimp farming business is supported by the community because it opens up job opportunities, there is not cultural change socio-cultural community, and there has never been a conflict from community to community company side.
Pengembangan Sistem Digital Image Colorimetry (DIC) Untuk Pemantauan Polutan Nitrogen Di Perairan Mulia Ramadhani, Adella; Dono Wilopo, Mukti; Johan, Yar; Iresta Wardani, Firdha; Firdaus, M. Lutfi
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.794-800

Abstract

The presence of ammonia in waters needs to be monitored because of its toxic nature, especially in the form of free ammonia (NH₃). High concentrations of free ammonia can disrupt the balance of aquatic ecosystems, reduce dissolved oxygen levels, inhibit the growth of aquatic organisms, and even cause mass mortality in fish and other biota. The purpose of this study is to build the Digital Image Colorimetry system for detecting ammonia and assess the accuracy of the DIC method compared to the well-known established spectrophotometric method. Analysis from 5 locations of saline water, salinity and pH levels were still within normal limits, ranging from 33-34 ppt for salinity, while pH is 7.5-7.9. The ammonia content at the sampling point was still considered safe, in accordance with the quality standard (0.3 ppm). The results of ammonia concentration measurements using the DIC method and the spectrophotometric method show a neglegible level of difference and have an accuracy value above 90%. These findings indicate that DIC can be used as an alternative method for measuring ammonia, especially for rapid analysis in the field.
Analisis Kesesuaian dan Daya Dukung Kawasan Ekowisata Pantai Kategori Rekreasi di Pantai Sekunyit Kabupaten Kaur Agustin, Nara; Johan, Yar; Dono Wilopo, Mukti
JURNAL ENGGANO Vol. 10 No. 1 (2025)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Beach ecotourism is an ecotourism activity conducted in coastal areas in general by utilizing coastal resources and water levels. Sekunyit Beach is one of the beaches located in South Kaur District which is directly adjacent to the Indian Ocean. South Kaur district has an area of land area reaching 92.75 km2. This study aims to analyze the carrying capacity of recreational category coastal ecotourism area in Sekunyit Beach, Kaur Regency. The method performed in this study is the survey method. The results of the research on recreational category beach ecotourism in Sekunyit Beach obtained the results of the appropriate category (S2) and very appropriate (S1) with the Ecotourism Conformity Index (IKE) of 80,86% - 85,15%. While the value of the carrying capacity of sekunyit beach area ranges from 97 - 124 (people / day). Keywords: Area support capacity, Coastal ecotourism, Regional suitability, Scenic Beauty Estimation, Sekunyit Beach
Analisis Sampah Makroplastik di Pantai Pekik Nyaring Bengkulu Tengah Herliany, Nurlaila Ervina; Kadarisman, Kadarisman; Johan, Yar
OCTOPUS: JURNAL ILMU PERIKANAN Vol. 14 No. 2 (2025): OCTOPUS
Publisher : Universitas Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26618/p5kc0095

Abstract

Penelitian ini dilaksanakan di Pantai Pekik Nyaring Kabupaten Bengkulu Tengah, Provinsi Bengkulu. Pantai Pekik Nyaring merupakan salah satu pantai yang menjadi destinasi wisata di Kabupaten Bengkulu Tengah. Salah satu permasalahan di lokasi wisata, termasuk Pantai Pekik Nyaring adalah masalah pencemaran yang berasal dari sampah plastik. Sampah plastik dapat dikategorikan menjadi makroplastik, mesoplastik dan mikroplastik. Sampah makroplastik menjadi ancaman serius karena dapat merusak estetika dan membahayakan biota perairan. Tujuan penelitian ini adalah memperoleh informasi mengenai sampah makroplastik di kawasan Pantai Pekik Nyaring Bengkulu Tengah. Penelitian ini dilakukan dengan metode survei dan stasiun penelitian ditentukan menggunakan purposive sampling. Kriteria stasiun yaitu : Stasiun 1 merupakan area pemukiman, Stasiun 2 memiliki muara sungai, Stasiun 3 adalah perkebunan masyarakat dan Stasiun 4 adalah area wisata. Penelitian dilaksanakan selama 15 hari, dengan interval pengambilan data tiap 2 hari. Hasil penelitian menunjukkan terdapat 10 jenis sampah makroplastik yang ditemukan di Pantai Pekik Nyaring, yaitu botol minuman, peralatan plastik, gelas plastik, produk perawatan pribadi, tutup botol atau tutup wadah, pembungkus makanan, kantong plastik, sedotan, tali plastik (rafia) dan pemantik rokok. Berat sampah makroplastik yang diperoleh berkisar antara 1.068 - 4.159 gram, dengan kepadatan berkisar antara 1,25-5,23 g/m2. Komposisi sampah makroplastik yaitu 0,91% - 41,20%, yang didominasi oleh gelas plastik. Fluktuasi berat sampah makroplastik dominan mengalami penurunan yaitu sebanyak 5 kali selama penelitian, dimana kondisi cuaca hujan menyebabkan sampah makroplastik lebih sedikit ditemukan. Kata kunci: Kepadatan, Komposisi, Makroplastik, Pantai Pekik Nyaring
Pengembangan Metode Digital Image Colorimetry (DIC) Untuk Penentuan Kesegaran Ikan Berbasis Smartphone Khairunnisa, Syahra; Wilopo, Mukti Dono; Johan, Yar; M. Lutfi Firdaus; Wardani, Firdha Iresta
Jurnal Perikanan Unram Vol 16 No 1 (2026): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v16i1.1977

Abstract

Ikan merupakan komoditas perikanan yang mudah mengalami penurunan mutu setelah ditangkap, sehingga diperlukan metode deteksi kesegaran yang cepat, akurat, dan praktis. Metode konvensional seperti uji organoleptik memiliki keterbatasan karena bersifat subjektif, sehingga perlu dikembangkan metode alternatif berbasis teknologi digital. Penelitian ini bertujuan untuk mengembangkan metode Digital Image Colorimetry (DIC) berbasis smartphone dalam mendeteksi tingkat kesegaran ikan menggunakan pewarna alami ekstrak Bunga Telang (Clitoria ternatea), serta membandingkan hasilnya dengan metode uji organoleptik konvensional. Sampel yang digunakan adalah ikan belanak (Mugil cephalus) yang dipotong tanpa tulang menjadi tiga bagian dengan masing-masing berat 5 gram. Potongan ikan ditempatkan dalam botol transparan yang telah dilengkapi label indikator berbasis ekstrak Bunga Telang, kemudian diamati perubahan warnanya selama penyimpanan pada suhu. Antosianin pada ekstrak Bunga Telang berfungsi sebagai indikator pH yang peka terhadap senyawa volatil (amonia) yang terbentuk seiring penurunan mutu ikan. Hasil pengamatan menunjukkan bahwa terjadi perubahan warna label indikator dari ungu menjadi biru seiring bertambahnya waktu penyimpanan, dengan pola perubahan nilai RGB yang konsisten terhadap proses pembusukan. Berdasarkan hasil uji organoleptik, ikan mulai dikategorikan busuk pada jam ke-12 penyimpanan, yang selaras dengan hasil analisis DIC. Dengan demikian, metode Digital Image Colorimetry (DIC) berbasis smartphone terbukti cukup akurat, praktis, dan potensial digunakan sebagai alternatif metode konvensional dalam mendeteksi kesegaran ikan secara digital.
Co-Authors Agustin, Nara Aptawan, Hendrivan Bieng Brata Deddy Bakhtiar, Deddy Ertanto, Bobby Fatimatuzzahra Fatimatuzzahra Firdha Iresta Wardani Futra, Febby Dwi Indra Cahyadinata, Indra Iresta Wardani, Firdha Kadarisman Kadarisman Khairunnisa, Syahra M. Lutfi Firdaus M. Lutfi Firdaus, M. Lutfi Maya Angraini Fajar Utami, Maya Angraini Fajar Mukti Dono Wilopo Mulia Ramadhani, Adella Nurlaila Ervina Herliany Reflis Saputra, Rizki Satria Putra Utama Septiyaningrum, Ines Simanjuntak, Putri Hezekiel Claracia Sipriyadi Wibowo, Risky Hadi Yurike Yurike Yuwana Yuwana