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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Journal of Marine and Aquatic Sciences Journal of Environment Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Pamator : Jurnal Ilmiah Universitas Trunojoyo Madura REKAYASA Jurnal Perikanan Universitas Gadjah Mada Journal of Marine Research and Technology Jurnal Kelautan dan Perikanan Terapan (JKPT) Jurnal Kelautan Nasional Juvenil: Jurnal Ilmiah Kelautan dan Perikanan Geosfera Indonesia Ulil Albab
Dwi Budi Wiyanto
Program Studi Ilmu Kelautan, Fakultas Kelautan Dan Perikanan, Universitas Udayana, Kampus UNUD Bukit Jimbaran, Bali 80361
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Library & Information Science Physics Social Sciences

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Struktur Komunitas Epifauna pada Ekosistem Lamun di Pantai Prapat Agung dan Pantai Segara Ayu, Bali Gusti Ayu Tiara Wisma Sari; Dwi Budi Wiyanto; Putu Satya Pratama Atmaja
Journal of Marine Research and Technology Vol 7 No 1 (2024): FEBRUARI 2024
Publisher : Department of Marine Sciences, Faculty of Marine and Fisheries, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMRT.2024.v07.i01.p06

Abstract

Seagrass, a flowering marine plant, has adapted to thrive in shallow seas where its stems grow along the substrate. Seagrass meadows offer numerous benefits due to the mutual interaction between seagrass and marine biota. The primary objective of this study was to determine the precise composition of the epifauna community and establish the relationship between epifauna abundance and seagrass density. The research was conducted between October and December 2022. Purposive random sampling was employed as the research methodology, with three stations selected at each research location. The findings revealed the presence of nine seagrass species, namely Cymodocea rotundata, C. serrulata, Enhalus acoroides, Halodule pinifolia, H. uninervis, Halophila ovalis, H. minor, Thalassia hemprichii, and Syringodium iseotifolium. The highest species density, recorded at Prapat Agung Beach, was observed in the H. uninervis type with a density of 216 ind/m2. Conversely, at Segara Ayu Beach, the highest species density was found in the C. rotundata type, with a 320/m2 density. Segara Ayu Beach exhibited the highest epifauna diversity, scoring 3.46 in the high category. Additionally, it displayed the highest epifauna uniformity, with a score of 0.92 in the high category. Prapat Agung Beach had the highest epifauna dominance index, scoring 0.19 in the low category. The correlation analysis between seagrass density and epifauna abundance yielded a correlation coefficient (r) of 0.779, indicating a strong relationship. The ANOSIM test results indicated a significant difference in the abundance of epifauna, with an R-value of 0.9657 and a ???? value of 0.0001.
Analisis Kesesuaian dan Daya Dukung Kawasan Wisata Selam dan Snorkeling di Pantai Jemeluk, Karangasem, Bali Hadiyanti, Alfi Rizki; Wiyanto, Dwi Budi; Darmendra, I Putu Yogi
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.27498

Abstract

The abundant biodiversity at Jemeluk Beach does not guarantee that all marine tourism activities and activities do not damage and have a negative impact on the environment. The tourism potential of Jemeluk Beach is the existence of coral reefs and many types of reef fish so that it is suitable to be used as marine tourism, one of which is diving and snorkeling. This research aims to analyze the suitability index and carrying capacity of diving and snorkeling tourism at Jemeluk Beach in order to become a well-managed tourist attraction and develop in the sustainability corridor. The analysis used in this research is the analysis of the suitability and carrying capacity of the area, namely by comparing the characteristics and quality of land against land use requirements for certain tourism activities while still paying attention to the capacity of the area to accommodate tourism activities in order to maintain environmental sustainability and natural preservation. The method of measuring coral reefs using the UPT (Underwater Photo Transect) method which is based on the shape of coral growth. Measurement of the type and number of reef fish was studied using the UVC (Underwater Visual Census) method by taking data along 50 meters at the same depth as the data collection of coral reef cover. The condition of the suitability of diving tourism at points I, II and III has the same value of 1.6 and is classified as unsuitable. In contrast to diving tourism, the condition of the suitability of snorkeling tourism at points I and II has the same value of 2.1 and is classified as suitable category, while point III has a value of 2.48 and is classified as suitable category to be used as an object of marine tourism development. The results of the calculation of the carrying capacity of the area for diving tourism that can be accommodated as many as 404 people/day while snorkeling tourism is 31 people/day.
The Application of Multi Temporal Satellite Data For Land Cover Mapping of Bawean Island, East Java Zainul Hidayah; Haryo Dwito Armono; Maulinna Kusumo Wardhani; Dwi Budi Wiyanto
Geosfera Indonesia Vol. 7 No. 3 (2022): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v7i3.30797

Abstract

Land cover dynamics in a small island can be determined using Geographic Information System (GIS) approach based on multitemporal image analysis. This study aimed to classify major land cover types and to map land cover changes of Bawean Island. Two sets of 10 meter resolution satellite data ALOS AVNIR (2010) and Sentinel-2A (2020) were used in this study. Satellite image analysis was carried out through several stages namely image pre-processing including radiometric and geometric correction, supervised image classification and accuracy test. Image classification results from 2010 to 2020 showed a significant change in land cover on Bawean Island. The forest vegetation land cover declined significantly from 13,470.5 Ha in 2010 to 8,543.4 Ha in 2020. Most of the area have been converted into paddy fields and built-up areas. The accuracy test and validation were determined by comparing the 2020 Sentinel image classification results with field observation conducted in 2021. The analysis showed good results with 82.52% overall accuracy and 79.66 Kappa coefficient. Further investigation found that changes in land cover on Bawean Island occured due to the agriculture and infrastucture development. Keywords : Geographic Information System (GIS); land cover; satellite images; small island Copyright (c) 2022 Geosfera Indonesia and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License
Analisis Struktur Komunitas Ikan Karang di Teluk Penerusan, Sumber Kima, Buleleng, Bali Muhammad Fakhri Ramadhani; Dwi Budi Wiyanto; I Gusti Ngurah Putra Dirgayusa
ULIL ALBAB : Jurnal Ilmiah Multidisiplin Vol. 2 No. 8: Juli 2023
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jim.v2i8.2046

Abstract

Keberadaan komunitas ikan karang menjadi dapat menjadi cerminan dari kondisi kesehatan ekosistem terumbu karang. Demografi terumbukarang cenderung berbeda terhadap kondisi tempat hidupnya dimana salah satunya dipengaruhi oleh kedalaman perairan, yang dapat berimplikasi terhadap perbedaan komunitas ikan karang yang berasosiasi. Penelitian ini memiliki tujuan untuk menentukan perbedaan komunitas ikan karang yang dilihat berdasarkan nilai kelimpahan, indeks struktur komunitas (keanekaragaman, keseragaman dan dominansi), serta biomassanya yang disandingkan dengan kondisi lingkungan perairan. Metode pengamatan visual sensus digunakan dalam pengamatan ikan karang pada 8 stasiun, dengan luas area pengamatan 350 m2 per stasiun. Hasil pengamatan menunjukkan jumlah spesies ikan karang sebanyak 45 spesies, dengan tiga keluarga dominan: Pomacentridae, Achanturidae dan Chaetodonidae. Terdapat satu spesies ikan karang yang sangat jarang ditemukan Chrysiptera tricincta. Nilai indeks struktur komunitas juga tidak berbeda jauh antar stasiun pengamatan dan masih tergolong baik. Biomassa ikan karang memiliki interval nilai yang cukup berbeda dengan kisaran nilai 87-446 kg/ha. Banyaknya ikan dari keluarga acanthuridae yang ditemukan menjadi kontributor utama terhadap tingginya nilai biomassa ikan karang. Kondisi perairan masih mendukung kehidupan dari komunitas ikan karang. Hasil riset memberikan gambaran terkait kondisi komunitas ikan karang, sehingga dapat dijadikan pedoman dalam pengelolaan sumberdaya perikanan, khususnya pada ekosistem terkait.
Estimation of Total Suspended Solids in the Ujung Pangkah Estuary Using Multi-Temporal Sentinel-2 Satellite Imagery: Estimasi Total Padatan Tersuspensi di Muara Ujung Pangkah Menggunakan Citra Satelit Sentinel-2 Multitemporal Istriyani, Ika Kurnia; Hidayah, Zainul; Wiyanto, Dwi Budi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 16 No. 3 (2024): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v16i3.53244

Abstract

Kehadiran bahan terlarut dalam air berupa TSS berdampak pada sifat optik air laut. Fenomena ini dapat terukur dan bisa diamati dengan menggunakan teknik penginderaan jauh. Untuk memperkirakan konsentrasi TSS menggunakan metode penginderaan jauh, harus digunakan berbagai algoritma untuk mengubah nilai reflektansi piksel menjadi konsentrasi TSS. Tujuan dari penelitian adalah untuk mengestimasi dan memetakan konsentrasi TSS menggunakan data citra satelit multitemporal Sentinel-2 dan membandingkan beberapa algoritma TSS berdasarkan analisis citra dengan pengukuran lapang. Citra satelit multi temporal Sentinel-2 dari tahun 2020-2022 digunakan untuk penelitian ini. Hasil TSS dari pengolahan citra dibandingkan dengan pengukuran lapangan dari 25 titik pengambilan sampel. Pengukuran di lapangan menunjukkan bahwa rata-rata konsentrasi TSS di wilayah studi berkisar antara 24 dan 127 mg/l. Algoritma Liu dan Budiman menghasilkan estimasi TSS dengan standar deviasi tertinggi, sedangkan data algoritma LEL menunjukkan deviasi lebih kecil. Dalam penelitian ini, algoritma LEL lebih valid untuk memperkirakan TSS in-situ (RMSE = 10.75, MAPE = 3.97% dan R2 model regresi = 0.85).
Pemetaan Habitat Bentik di Perairan Sanur dengan Citra Sentinel-2B Level 2A Annadiyah, Mia; Wiyanto, Dwi Budi; Asyakur, Abdurachman
ULIL ALBAB : Jurnal Ilmiah Multidisiplin Vol. 4 No. 6: Mei 2025
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jim.v4i6.8906

Abstract

Secara ekologi terumbu karang berfungsi sebagai daerah pakan, berkembang biak, asuhan, dan tempat berlindung bagi berbagai jenis ikan. Pentingnya habitat terumbu karang menuntut dilakukannya identifikasi sekaligus monitoring terhadap keberadaan dan status kondisi habitat tersebut. Teknologi penginderaan jauh dapat menjadi solusi akan keterbatasan metode konvensional seperti waktu yang relatif lama, biaya yang besar dan sulit menjangkau area terpencil dan beresiko. Pemilihan wahana penginderaan jauh mempertimbangkan kebutuhan dan kualitas yang diinginkan karena sensor yang dibawa untuk mendeteksi habitat bentik memiliki kemampuan yang berbeda. Citra Sentinel-2A merupakan citra satelit open source dengan kemampuan resolusi spasial 10 m dimana masuk kedalam citra resolusi tinggi. Tujuan penelitian ini adalah untuk mengetahui tingkat akurasi dan kondisi sebaran terumbu karang menggunakan citra Sentinel-2B dalam memetakan habitat bentik di perairan dangkal Sanur. Klasifikasi kedua citra tersebut menggunakan klasifikasi berbasis piksel dan uji akurasi menggunakan metode matriks konfusi. Berdasarkan pengamatan lapangan, ditemukan emat jenis komposisi habitat dengan luas karang hidup, karang mati, lamun, dan pasir adalah 56.14 ha, 190.3 ha, 518.79 ha, 764.21 ha. Kemampuan citra Sentinel-2 dalam memetakan habitat bentik mendapat overall accuracy sebesar 81.15%. Nilai akurasi yang di dapat pada penelitian ini menunjukkan bahwa pemanfaatan data penginderaan jauh menggunakan citra Sentinel-2 dapat digunakan untuk pemetaan terumbu karang.
Coral Fish Biodiversity Assessment on Different Locations (Case Study of the North Bali ICRG Area). Potje, Emilian Ivarlyano; Wiyanto, Dwi Budi; Giri Putra, I Nyoman; Demianus Hukom, Frensly
Rekayasa Vol 17, No 1: April, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i1.24171

Abstract

Reef fish associated with artificial reefs are one indicator of success for artificial reef applications. This research was carried out in February 2023. Reef fish data was collected in three tidal conditions. Data of Coral fish was collected using the Underwater Visual Census (UVC) method. The data that collected includes abundance of species, individual abundance and fish size from 3 categories namely major, indicators and targets. From the results, the community structure at each location obtained the same diversity index and uniformity index which were classified as moderate to high and the dominance index was classified as low. For each tidal condition the diversity index obtained was classified as medium to high, the uniformity index is relatively high and the dominance index is low. The total abundance of species at each point ranges from 26 species represented by 13 families to 63 species represented by 19 families, and for each tidal condition it ranges from 11 species represented by 7 families to 42 species represented by 16 families. The total abundance of individuals at each point overall ranged from 1333-20,048 Ind/Ha, each tidal condition it ranges from 20- 980 individuals. The total biomass at each point overall ranged from 102,844- 1353,119 Kg/Ha, each tidal condition ranges from 2,154 to 63,780 kg. Based on the results, the species similarity index values at each point were categorized as medium, except for Les II and Galeri, which were classified as high, while the test results for each tidal condition ranged from medium to high at each point. Test results (Mann-Whitney) for each point based on individual abundance values and coral reef fish biomass generally showed significant differences except between the Gallery and Les II points, whereas for each tidal condition there were no significant differences. Based on the results of the Correspondence Analysis, it was found that there was a relationship between several types of fish with each research point and at each tidal condition, this shows that the artificial reef structure at each point and each tidal condition was successful in attracting fish populations.
Co-Authors Abd. Rahman As-syakur Akhmad Farid Alindya Eka Puspita Dewi Annadiyah, Mia Asyakur, Abdurachman Basyaasyah Rahmaningrum Pettalolo Demianus Hukom, Frensly Elok Faiqoh Gusti Ayu Tiara Wisma Sari Hadiyanti, Alfi Rizki Haryo Dwito Armono I Gede Budi Astrawan I Gusti Ngurah Putra Dirgayusa I Putu Sugiana I Putu Yogi Darmendra I Wayan Gede Astawa Karang Indah Nurainie Istriyani, Ika Kurnia Maulinna Kusumo Wardhani Muhammad Fakhri Ramadhani Ni Wayan Loviasari Nuzula, Nike Ika Parmadi Parmadi Potje, Emilian Ivarlyano Putra, I Nyoman Giri Putu Adi Prawira Putu Satya Pratama Putu Satya Pratama Atmaja Sastra Ardi Agamis Ilhami Sulistiorini, Dyah Ayu Tiara Permata Sari Wirayuhanto, Harish Yulianto Suteja Zainul Hidayah