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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Journal of Environmental Engineering and Sustainable Technology JFMR (Journal of Fisheries and Marine Research) JURNAL EDUCATION AND DEVELOPMENT Journal of Marine and Coastal Science
Tumulyadi, Agus
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Mechanical Engineering

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Rancang Bangun Kapal Klasik Untuk Ekowisata di Perairan Terbatas Sunardi, Sunardi; Sambah, Abu Bakar; sukandar, sukandar; sulkhani, eko; Tumulyadi, Agus
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 15, No 3 (2018): Oktober
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1199.65 KB) | DOI: 10.14710/kapal.v15i3.20735

Abstract

Perkembangan ekowisata bahari mengalami kemajuan yang sangat pesat selama beberapa tahun terakhir dan memberikan manfaat yang besar untuk masyarakat pesisir dan nelayan. Kebutuhan sarana transportasi berupa kapal wisata untuk menunjang kegiatan wisata bahari masih sangat besar dan sangat berpotensi untuk ditingkatkan. Kapal wisata untuk kebutuhan wisata yang ada saat ini adalah kapal nelayan yang masih terkesan kurang menarik dan tidak dilengkapai dengan sarana keselamatan ataupun akomodasi yang memadahi. Penelitian ini mencoba untuk mengembangkan desain kapal kayu klasik yang sesuai untuk wisata di perairan terbatas dengan penumpang sampai dengan 5 penumpang. Penelitian ini menerapkan pendekatan perbandingan dengan kapal pembanding sebagai sebagai pengujian desainnya, serta menerapkan parametric design, yaitu  suatu metode yang digunakan untuk mengotimalkan desain suatu kapal dengan mempertimbangkan semua variabel seperti ukuran kapal, kecepatan kapal, kemampuan mesin dan power mesin yang dibutuhkan untuk menggerakkan kapal. Batasan desain yang digunakan adalah kapal harus dapat diproduksi oleh galangan kapal tradisional dengan biaya produksi yang murah. Hasil penelitian ini menghasilkan desain kapan serta fisik kapal klasik secara utuh dengan materail kayu dan mampu melaju dengan kecepatan 5 knot dengan menggunakan mesin 4HP (Horse Power). Hasil desain dan uji coba berlayar terhadap kapal yang dibuat menunjukkan stabilitas yang sangat bagus untuk beroperasi di perairan bebas
Alat Tangkap yang Ditinggalkan, Hilang, dan Dibuang: Studi Kasus Alat Tangkap Jaring Rajungan dan Bubu Rajungan pada Perikanan Rajungandi Demak Jawa Tengah: Abandoned, Lost, and Discarded Fishing Gear: A Case Study of Swimming Crab Fisheries Tumulyadi, Agus; Setyanto, Arief; Bintoro, Gatut; Lelono, Tri Djoko; Isdianto, Andik; Setyohadi, Daduk; Amanda Rifan Fathoni; Rafif Zul Fahmi
JFMR (Journal of Fisheries and Marine Research) Vol. 8 No. 2 (2024): JFMR on July
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2024.008.02.6

Abstract

Rajungan merupakan salah satu komoditas unggulan sektor perikanan tangkap di perairan yang ditangkap menggunakan jaring insang dan bubu / bubu lipat. Potensi hilangnya kedua alat tangkap tersebut saat dioperasikan sangat tinggi, baik disebabkan oleh faktor cuaca, kondisi dasar perairan maupun interaksi dengan alat tangkap lain. Tertinggalnya alat tangkap di perairan yang lebih dikenal dengan istilah Abandoned, Lost or Discarded Fishing Gear (ALDFG) memberikan kontribusi signifikan terhadap melimpahnya marine debris (sampah laut) di laut yang memberikan dampak negatif terhadap kelestarian sumberdaya ikan, kualitas perairan dan membahayakan keselamatan pelayaran. Meskipun demikian, belum ada upaya mitigasi dan pengurangan ALDFG di perairan laut. Penelitian ini bertujuan untuk melakukan identifikasi penyebab tertinggalnya alat tangkap pada perikanan rajungan di perairan laut.  Pengumpulan data dilakukan di kabupaten Demak, Jawa Tengah pada bulan Agustus dan September 2023 dengan metode wawancara terhadap responden yang dipilih secara sengaja di sekitar pendaratan nelayan rajungan, yang hasilnya kemudian dianalisis secara deskriptif. Studi ini menemukan bahwa sumber sampah laut yang berasal dari alat tangkap rajungan khususnya adalah disebabkan oleh alat tangkap yang hilang bukan karena sengaja dibuang ke laut. Alat tangkap yang hilang terjadi karena faktor alam (23%) dan atau diterjang oleh pengoperasian alat tangkap jenis lainnya (27%).   Blue swimming crab is one of the leading commodities in the capture fisheries sector in waters which are caught using gill nets and traps/bubu lipat. The potential for loss of these two fishing gears during operation is very high, both due to weather factors, bottom conditions of the waters and interactions with other fishing gears. Leftover fishing gear in the waters known as Abandoned, Lost or Discarded Fishing Gear (ALDFG) contributes significantly to the abundance of marine debris in the sea which has a negative impact on the preservation of fish resources, water quality and endangers shipping safety. Even so, there have been little efforts to mitigate and reduce ALDFG in marine waters. This study conducted at Demak of Central Java from August to September 2023 which aims to identify the causes of fishing gear debris in crab fisheries in marine waters. Data collection was carried out by in-depth interviews with respondents who were deliberately selected around the crab fishermen's landings, the results of which were then analyzed descriptively. This study found that the source of marine debris originating from swimming crab fishing gear was caused by lost fishing gear, not because it was intentionally thrown into the sea. Lost fishing gear occurs due to natural factors and is affected by the operation of other types of fishing gear by 23% and 27% respectively.
BIOLOGICAL ASPECTS OF FOURFINGER THREADFIN, ELEUTHERONEMA TETRADACTYLUM (SHAW, 1804) CAUGHT IN LEKOK WATERS, PASURUAN, EAST JAVA Lelono, Tri Djoko; Tumulyadi, Agus; Sari, Wahida Kartika; Ismaningsih, Indri Sari
Journal of Environmental Engineering and Sustainable Technology Vol 8, No 2 (2021)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2021.008.02.1

Abstract

Fourfinger threadfin Eleutheronema tetradactylum has a local name, namely laosan fish by the coastal community of Lekok Pasuruan District, a type of demersal fish that can swim in brackish waters. This research aimed to determine the biological aspects, namely the relationship of Length to Weight, sex ratio, and to determine the feasibility of catching based on the measurement results of the length of the first caught (Lc) and the length of the gonads first ripened (Lm). This research was conducted based on catches during Januari - March 2020 for total samples of as much as 450 fish, based on the catch of gill nets. The result informed that the length and weight relationship was negative allometric. The sex ratio between male and female was 1.00: 0.00. During the study, no female gonads were found because the fourfinger threadfin had spawned protandrous hermaphrodites. The value of length at first maturity (Lm) and length at first capture (Lc) was 20.99 ± 0.13 cm and 24.66 ± 0.046 cm. Lc > Lm's value proves that the fish caught is dominant gonad ripe fish so that the fish is suitable for catching and the fishing gear used selectively.
HARVEST CONTROL RULES OF DEMERSAL FISHERIES IN BRONDONG WATER, LAMONGAN, EAST JAVA Harlyan, Ledhyane Ika; Lianingrum, Yulis Dwi; Setyohadi, Daduk; Tumulyadi, Agus; Muntaha, Ali
Journal of Environmental Engineering and Sustainable Technology Vol 8, No 2 (2021)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2021.008.02.3

Abstract

Multispecies demersal fisheries management in Brondong waters have been managed by conventional single-species approach for determining catch quota or annual allowable biological catch (ABC). This might be impractical since a multispecies fishery should be managed by a multispecies fisheries management approach. The feedback harvest control rule (HCR) is a harvest control rule that has been validated and might be applied for a multispecies fishery. The aim of this study is to compare the conventional single-species approach and the feedback HCR in order to estimate the annual ABC. In this study, the annual ABC was calculated by applying two HCRs, the conventional single-species approach that applying the Schaefer surplus production model into the catch and effort of the dominant demersal fisheries data series of 2011 – 2020. The results showed that the Schaefer model provided the annual ABC higher than the feedback HCR estimation. Therefore, it was safe to apply the feedback HCR than the Schaefer model to determine the annual ABC. Under data-limited conditions, the feedback HCR might be an option to manage multispecies fisheries.
Community Structure of Fishes the Association with Seagrasses at Bama Beach, Baluran National Park, Situbondo, East Java Setyanto, Arif; Andriani, Dina; Sulkhani Yulianto, Eko; Tumulyadi, Agus; Bintoro, Gatut; Djoko Lelono, Tri; Adhihapsari, Wirastika; Nur Hidayah, Lisa; Isdianto, Andik; Zakiyah, Umi; Lanudia Fathah, Aulia; Kurnia Wardana, Novar; Mahardika Putri, Berlania
Journal of Marine and Coastal Science Vol. 13 No. 3 (2024): SEPTEMBER
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v13i3.61211

Abstract

Seagrass bed has an important role for biota in waters. The existence of fish in seagrass is influenced by other ecosystems close to seagrass, such as mangroves and coral reefs. This study focuses on fish associated with seagrass in Bama Beach. The data include seagrass coverage and the number of fish for the Diversity, Uniformity, and Dominance. The study was carried out on March 15 to 20, 2018 using the Underwater Visual Census. Results show that seagrass cover was highest in seagrass stations near mangroves (62,66%), while at stations near coral reefs was 37,66. The composition of fish associated with seagrass near mangroves was 361 individuals, while near reefs was 1.454 individuals. The values of diversity, uniformity, and dominance of fish associated with seagrass near mangroves are 2,62; 0,88; and 0,09 respectively while those associated with coral reefs have values of 2,93; 0,85; and 0,06. Family Aulostomidae was dominant in the morning at the station near mangroves, and in the afternoon was dominated by Apogonidae. At the station near coral reefs, the Family Pomacentridae was dominant both in the morning and afternoon. The seagrass conditions in this study are in the healthy category with quite diverse fishes. The level of fish diversity in seagrass was influenced by habitats associated with seagrasses than seagrass cover levels. The condition of Bama Beach as a conservation area is quite good, but the activity of tourists around the coastline must be monitored to maintain the environment.
THE CHARACTERISTICS OF SHRIMP FISHERIES IN KOTABARU, SOUTH KALIMANTAN, INDONESIA Harlyan, Ledhyane Ika; Setyohadi, Daduk; Tumulyadi, Agus; Sukandar, Sukandar; Maulana, Almaas Zain; Lathif, Adib Hisyam; Fanani, Zainal
Journal of Environmental Engineering and Sustainable Technology Vol 11, No 02 (2024)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2024.011.02.5

Abstract

The shrimp fishery in Kotabaru, South Kalimantan, is a small-scale fishery that supplies raw materials to PT. Sekar Laut, Tbk, a company specializing in shrimp cracker production for the global market. Despite its significance, limited research has been conducted on the sustainability of this fishery. This study aims to analyze the key characteristics of the shrimp fishery in Kotabaru waters. Data were collected from January to August 2024 in Kotabaru, South Kalimantan, and subjected to various analyses, including species composition, length-weight relationships for several shrimp species, and identification of shrimp fishing grounds. The results reveal that banana shrimp and yellow shrimp are the predominant species within the catch, both exhibiting negative allometric growth patterns. The fishery’s most productive fishing location is identified in Pantai Village, highlighting this area as a potential focus for sustainable management initiatives. These findings underscore the need for ongoing monitoring and targeted management practices to promote the long-term sustainability of the shrimp fishery in Kotabaru.
MENGGUNAKAN METODE STATIONARY VISUAL CENSUS UNTUK MENGAMATI IKAN PADA TERUMBU KARANG BUATAN DI PANTAI DAMAS, KABUPATEN TRENGGALEK Bintoro, Gatut; Tumulyadi, Agus; Isdianto, Andik; Fathah, Aulia Lanudia; Putri, Berlania Mahardika
JURNAL EDUCATION AND DEVELOPMENT Vol 13 No 1 (2025): Vol 13 No 2 Mei 2025
Publisher : Institut Pendidikan Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37081/ed.v13i1.6733

Abstract

Penelitian ini mengevaluasi kontribusi terumbu buatan (TB) terhadap fungsi ekosistem dan kelangsungan hidup komunitas ikan di Pantai Damas, Kabupaten Trenggalek, dengan fokus pada produksi primer, siklus nutrien, dan proses pemijahan. Menggunakan metode stationary visual census selama tiga hari pada musim timur tahun 2024, penelitian ini bertujuan untuk mengidentifikasi dan menganalisis pola penyebaran serta keanekaragaman ikan yang berinteraksi dengan 22 unit TB yang telah teridentifikasi sejak penenggelaman pertama pada tahun 2017. Hasil pengamatan menunjukkan bahwa TB telah berhasil menunjukkan fungsi ekologis yang signifikan, termasuk meningkatnya kolonisasi oleh alga, spons, dan invertebrata yang menjadi sumber makanan utama bagi ikan. Selain itu, TB telah menarik kelimpahan ikan dari 8 famili berbeda, termasuk famili baru seperti Synanceia dan Epinephelus, meskipun dengan jumlah yang rendah. Kompleksitas struktur TB terbukti menjadi faktor utama yang mendukung keanekaragaman dan kelangsungan hidup ikan. Penelitian ini menunjukkan bahwa terumbu buatan dapat berperan penting sebagai habitat alternatif yang mendukung proses ekologis dan keberlanjutan biologis di ekosistem pesisir.
Identifikasi Spesies dan Estimasi Nilai Produksi Ikan Kerapu (Epinephelus spp.) di Pelabuhan Tangkahan Kandangsemangkon: Analisis Data Perikanan yang Tidak Tercatat: Identification of Species and Estimation of Production Value of Grouper Fish (Epinephelus spp.) at Tangkahan Kandangsemangkon Port: Analysis of Unreported Fisheries Data Lelono, Tri Djoko; Bintoro, Gatut; Tumulyadi, Agus; Fuad, Fuad; Yulianto, Eko Sulkhani; Sutjipto, Darmawan Okto; Waliyuddin, Achmad; Hidayah, Lisa Nur; Widodo, Anung; Mahiswara, Mahiswara
JFMR (Journal of Fisheries and Marine Research) Vol. 9 No. 2 (2025): JFMR on July
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2025.009.02.1

Abstract

Penelitian ini bertujuan mengidentifikasi spesies kerapu (Epinephelus spp.) serta mengestimasi volume produksi hasil tangkapan kerapu yang tidak tercatat di Tangkahan Kandangsemangkon, Lamongan. Data primer diperoleh melalui identifikasi spesies hasil tangkapan, dan pencatatan volume produksi di Tangkahan Kandangsemangkon. Data sekunder berupa data produksi resmi di Pelabuhan Perikanan Nusantara (PPN) Brondong. Analisis data menggunakan identifikasi visual spesies, kategorisasi spesies pendukung perikanan kerapu berdasarkan Unit of Assessment (UoA). Hasil penelitian menunjukkan terdapat tiga spesies target utama, yaitu Epinephelus fuscoguttatus, Plectropomus maculatus, dan Epinephelus areolatus. Volume produksi yang tidak tercatat selama periode penelitian mencapai 12,33% dari total produksi kerapu di wilayah tersebut. Spesies pendukung yang teridentifikasi terdiri dari enam spesies primer utama, empat spesies primer minor, satu spesies sekunder utama, dan lima spesies sekunder minor. Hasil ini menunjukkan bahwa keterlibatan aktif nelayan dalam   pengumpulan data spasial serta pencatatan produksi secara partisipatif berperan penting dalam memperbaiki akurasi data perikanan untuk mendukung pengelolaan sumber daya yang berkelanjutan.   This research aims to identify grouper species (Epinephelus spp.) and estimate the volume of unrecorded grouper catch production at Tangkahan Kandangsemangkon, Lamongan. Primary data were obtained through the identification of landed species and the recording of production volume at Tangkahan Kandangsemangkon. Secondary data consisted of official production data from the Brondong Fishing Port. Data analysis involved visual species identification and categorization of supporting species for the grouper fishery based on the Unit of Assessment (UoA). The research results indicate the presence of three main target species: Epinephelus fuscoguttatus, Plectropomus maculatus, and Epinephelus areolatus. The unrecorded production volume during the research period reached 12.33% of the total grouper production in the area. The supporting species identified consisted of six major primary species, four minor primary species, one major secondary species, and five minor secondary species. These findings suggest that the active involvement of fishermen in spatial data collection and participatory production recording plays a crucial role in improving the accuracy of fisheries data to support sustainable resource management.
Co-Authors Abu Bakar Sambah, Abu Bakar Ali Muntaha Amanda Rifan Fathoni Andik Isdianto Arief Setyanto Daduk Setyohadi Darmawan Okto Sutjipto Dina Andriani Djoko Lelono, Tri Eko Sulkhani Yulianto Eko Sulkhani, Eko Fathah, Aulia Lanudia Fuad Fuad Gatut Bintoro Hidayah, Lisa Nur Ismaningsih, Indri Sari Lanudia Fathah, Aulia Lathif, Adib Hisyam Ledhyane Ika Harlyan Lianingrum, Yulis Dwi Mahardika Putri, Berlania Mahiswara, Mahiswara Maulana, Almaas Zain Nur Hidayah, Lisa Putri, Berlania Mahardika Rafif Zul Fahmi Sari, Wahida Kartika Setyanto, Arif Sukandar Sukandar Sulkhani Yulianto, Eko Sunardi Sunardi Tri Djoko Lelono Umi Zakiyah, Umi Waliyuddin, Achmad Widodo, Anung Wirastika Adhihapsari Zainal Fanani