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All Journal Journal of Oceanography Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Ilmu Kelautan Lesser Sunda
Tezar Rafandi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Social Sciences

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Analisis Refraksi dan Efek Pendangkalan (Shoaling) Gelombang terhadap penambahan Panjang Pemecah Gelombang pada Mulut Pelabuhan Tanjung Adikarta Glagah Yogyakarta Rafandi, Tezar; Widada, Sugeng; Atmodjo, Warsito
Journal of Oceanography Vol 2, No 2 (2013)
Publisher : Program Studi Oseanografi, Jurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (886.495 KB)

Abstract

AbstrakDalam pembangunan pelabuhan harus memperhatikan aspek fisika perairan atau aspek oseanografi yang meliputi pasang surut, arus dan gelombang. Gelombang merupakan salah satu aspek oseanografi yang penting dalam pembangunan. Proses penjalaran gelombang di sekitar pantai akan mengalami beberapa transformasi. Tujuan dari penelitian ini adalah untuk mengetahui proses refraksi dan efek pendangkalan (shoaling) gelombang dan kondisi gelombang ketika menuju mulut pelabuhan pada lokasi penelitian. Penelitian dilakukan dalam dua tahap yaitu pengambilan data primer/lapangan (gelombang) dan pengolahan data sekunder (angin) yang hasilnya digunakan untuk verifikasi dengan data primer gelombang. Pengambilan data primer gelombang dilakukan pada tanggal 22 sampai 24 Februari 2012. Metode yang digunakan untuk analisis hasil penelitian adalah metode kuantitatif dengan bantuan software SMS (Surface Water Modeling System). Dari hasil pengamatan gelombang diketahui gelombang di perairan pelabuhan Tanjung Adikarta, D.I Yogyakarta yang terjadi pada tanggal 22 sampai 24 Februari 2012, tinggi gelombang maksimum sebesar 1,475 meter dengan periode sebesar 15,8 detik. Tinggi gelombang signifikan (Hs) sebesar 1,021 meter dengan periode (Ts) sebesar 12,8 detik. Tinggi gelombang minimum 0,84 meter dengan periode sebesar 10,3 detik. Sedangkan hasil peramalan gelombang dengan metode SMB didapatkan untuk musim barat tinggi gelombang signifikan sebesar 0,978 meter dengan periode 8,276 detik, pada musim peralihan tinggi gelombang signifikan sebesar 0,9 meter dengan periode 7,936 detik dan pada musim timur tinggi gelombang signifikan sebesar 0,826 meter dengan periode 7,654 detik Dari hasil model didapatkan tinggi gelombang dimulut pelabuhan sampai daerah terlindung pemecah gelombang pada musim barat sebesar 1,43 meter sampai 0,52 meter, musim peralihan sebesar 1,96 meter sampai 0,46 meter, musim timur sebesar  1,54 meter sampai 0,37 meter, skenario 1 sebesar  1,3 meter sampai 0,26 meter dan skenario 2 sebesar 1,24 meter sampai 0,26 meter. 
Merancang Kawasan Konservasi Perairan Berorientasi Perikanan: Studi Kasus Kawasan Konservasi Perairan Pulau Liang dan Pulau Ngali di Nusa Tenggara Barat Aulia, Sukmaraharja; Pingkan, Jessica; Hernawati; Rafandi, Tezar; Muttaqin, Azhar; Muhidin; Retnoningtyas, Heidi
Jurnal Ilmu Kelautan Lesser Sunda Vol. 1 No. 2 (2021): Jurnal Ilmu Kelautan - Lesser Sunda
Publisher : Program Studi Ilmu Kelautan, Jurusan Perikanan dan Ilmu Kelautan, Fakultas Pertanian, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jikls.v1i2.37

Abstract

The shape of marine protected areas (MPAs) aimed for fisheries goals should be small enough to allow for spillover of adult fished species as well as larval and juvenile fished species. Such consideration was applied during the establishment of Liang-Ngali Island MPA in West Nusa Tenggara (WNT), Indonesia, which was mainly developed to support fisheries activities around it. In WNT, biologically diverse coastal and marine ecosystems have been utilized by local residents to support their livelihoods, mainly through fisheries and tourism activities. Aside from being a home for unique habitat such as mangrove forest, seagrass beds, and coral reef, Liang and Ngali Island also shows indication of spawning aggregation sites for reef fishes such as groupers and snappers. In 2016, the government of WNT Province designated both islands as marine protected areas under the category of marine recreational park. Following the Governor Decree, a management and zonation plan of Liang-Ngali MPA was then developed by engaging stakeholders from multiple institutions. In the framework of ecosystem approach to fisheries management, the existence of MPA provides strong instrument to support the sustainability of fish resources as well as maintaining continuous livelihood for surrounding coastal communities.
Pengaruh Kondisi Sosial Ekonomi Keluarga Nelayan Terhadap Pemahaman Aturan Pengelolaan Sumber Daya Laut di Sekitar Kawasan Konservasi Pulau Panjang Santika, Lora; Asmayadi; Rafandi, Tezar
Jurnal Ilmu Kelautan Lesser Sunda Vol. 4 No. 1 (2024): Jurnal Ilmu Kelautan - Lesser Sunda
Publisher : Program Studi Ilmu Kelautan, Jurusan Perikanan dan Ilmu Kelautan, Fakultas Pertanian, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jikls.v4i1.107

Abstract

The Pulau Panjang Marine Conservation Area is among the designated conservation zones based on the Decree of the Governor of West Nusa Tenggara No. 523-505 Year 2016. Pulau Panjang boasts a diverse marine ecosystem including mangroves, seagrasses, and coral reefs, holding significant economic value, particularly in the capture fisheries sector. This study employed a survey method utilizing both primary and secondary data. The research focused on the villages of Labuhan Mapin, Labuhan Burung, Pulau Kaung, and Pulau Bungin, with the research subjects being heads of fishermen households, considering their engagement in activities within the Pulau Panjang Conservation Area. Most of the population comprises indigenous residents over 40, representing diverse ethnicities such as the Bajo, Bugis, Mandar, and Bira, among others. The fishermen community's education level is relatively low, mostly limited to primary education. Their monthly income ranges between Rp. 1,000,000 – 7,000,000, with an average monthly income of Rp. 2,957,594.00. Monthly expenses vary between Rp. 930,000 – 3,850,000 with an average of Rp. 2,273,767. The community's knowledge regarding marine resource regulations (fisheries) is reasonably good, except for the regulation prohibiting fishing in certain areas, which remains less known among the population. Overall, socio-economic factors insignificantly influence the understanding of Marine Resources within the TWP Pulau Panjang region.
Rehabilitasi Mangrove untuk Mendukung Perikanan Berkelanjutan dan Mitigasi Iklim di Desa Labuhan Kuris Kabupaten Sumbawa Supriandi, Supriandi; Kautsari, Neri; Sapilin, Akbar; Rahmawati, Rahmawati; Syahputra, Ilham; Rhismanda, Agum; Rafandi, Tezar; Dharmawan, Teguh Dwi
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 1 (2024): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.10.1.112-124

Abstract

The mangrove ecosystems in Labuhan Kuris Village, Lape Subdistrict, Sumbawa Regency are degraded. The area of mangrove ecosystems is categorized as good; it has decreased, potentially impacting the decline in fisheries' productivity, global warming, and other effects. This community service activity aims to rehabilitate mangroves through education and mangrove planting. The stages of this activity include an initial survey of community knowledge (pre-test) regarding mangroves, education and discussion sessions (talk shows), mangrove planting, and monitoring and evaluation. Meanwhile, the target audience for this activity is adult community members. Interviews using questionnaires were conducted to assess the community's initial understanding of mangroves. An educational session on the roles of mangroves was conducted by providing materials and distributing stickers about the roles of mangroves, and sessions. An evaluation of understanding levels was performed through post-tests, while monitoring and evaluation were conducted using direct observation methods in the field. Post-test results showed that 88% of the target audience understand the function of mangroves, 96% stated that mangroves ' role is to protect fish and crabs, while only 60% answered that mangroves have roles in climate mitigation. The number of participants in the educational session was 50 people. The mangrove species planted was Rhizophora sp. On this occasion, 1000 mangrove seedlings were planted, and the number of community members involved in mangrove planting was 220. Monitoring and evaluation results indicated that some plants were damaged due to trampling by livestock. Thus, mitigation was done by fencing around the planting area. Overall, the community actively participated from the beginning to the end of the activities. This condition indicates that the community is highly concerned about mangrove management. However, community participation in mangrove management should be improved.
Co-Authors Asmayadi Aulia, Sukmaraharja Azhar Muttaqin Dharmawan, Teguh Dwi Hernawati Ilham Syahputra Jessica Pingkan, Jessica Muhidin Muhidin Neri Kautsari Rahmawati, Rahmawati Retnoningtyas, Heidi Rhismanda, Agum Santika, Lora Sapilin, Akbar Sugeng Widada Supriandi Supriandi, Supriandi Warsito Atmodjo