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All Journal METAMORFOSA Journal of Biological Sciences Journal of Marine and Aquatic Sciences Jurnal Biologi Udayana Bumi Lestari Ecotrophic, Journal of Environmental Science BULETIN OSEANOGRAFI MARINA Jurnal Ilmu Lingkungan Journal of Marine Research and Technology Jurnal Ilmiah Sains Jurnal Pengabdian Kepada Masyarakat Itekes Bali Journal of Fisheries & Marine Ulil Albab
Gede Surya Indrawan
Program Studi Ilmu Kelautan, Fakultas Kelautan Dan Perikanan, Universitas Udayana, Badung-Bali
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Immunology & microbiology Mathematics Nursing Physics Public Health Social Sciences

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Hubungan Antara Kelimpahan Ikan dengan Tutupan Lamun di Perairan Sanur, Bali Bertha Ayu Andhira; Gede Surya Indrawan; I Nyoman Giri Putra
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.p03

Abstract

Seagrass is aquatic ecosystems that is very beneficial for marine biota. One of the functions of seagrass fields is as a place to live, shelter, and place to find food for various types of fish. The correlation between seagrass and fish is very close, this study aims to decide the association between the abundance of the fish and the coverage of seagrass cover in Sanur, Bali. Samples were taken at two stations in Sanur which represented high seagrass cover, namely Sindhu Beach, and medium cover, namely Karang Beach. Data collection on seagrass cover and types was used in a 100 m line transect. The method that is used for taking the number and type of fish is using two methods, namely underwater visual census and beach nets. The results found eight species of seagrass, including Enhalus acoroides, Thalassia hemprichii, Syringodium isoetifolium, Cymodocea serrulata, Cymodocea rotundata, Halodule uninervis, Halodule pinifolia, and Halophila ovalis. Seagrass cover on Sindhu Beach is 72.2%, and Karang Beach is 50.2%. The fish found were 1,180 individuals, including 41 species from 18 families. The greatest abundance was in Sindhu Beach, which was dominated by Plotosus linneatus from the Plotosidae family, with a relative abundance of 30%, and the lowest abundance was on Karang Beach with the Plectorhinchus vittatus from the Haemulidae family, with a relative abundance of 0,2%. Diversity is worth 2.83, Variety is 0.80, and Dominance is 0.13. The correlation between fish abundance and seagrass cover is categorized as positive with a value of 0.8924 which indicated that a high seagrass cover has a high fish abundance and vice versa.
Pengaruh Warna Lampu yang Berbeda terhadap Laju Pertumbuhan Chaetoceros calcitrans Rijal Rahmatullah; I Wayan Nuarsa; Gede Surya Indrawan
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.p08

Abstract

Chaetoceros calcitrans is one of the diatoms commonly used as a natural feed for cultivated fish larvae. The cultivation of C. calcitrans as natural feed is influenced by various factors, including light as a source for photosynthesis. This research aimed to determine the effect of different light colors on the growth rate and identify the optimal color for the growth rate of C. calcitrans. The research was conducted at the BPIU2K Karangasem laboratory. The experimental method with a Completely Randomized Design (CRD) was employed, consisting of three treatments and one control. Treatment A used yellow-colored lights, treatment B used blue-colored lights, treatment C used green-colored lights, and treatment D served as the control using white-colored lights. The observed parameters included population density, specific growth rate, and doubling time. The results were analyzed using ANOVA. The findings indicated that the light color significantly affected the population density, specific growth rate, and doubling time with a value of (Sig.<0.05). The best treatment was the use of white-colored lights, followed by yellow-colored lights, which resulted in the highest density on the 5th day, reaching 1.238,88 x 104 cells/ml and 1.040,55 x 104 cells/ml, respectively. The specific growth rate for white and yellow lights was 8.51%/hour and 7.53%/hour, respectively. The doubling time for white and yellow lights was 14.93 hours and 15.75 hours, respectively. White and yellow light irradiation exhibited wavelengths suitable for the cultivation of C. calcitrans.
Edukasi Mengenai Nilai Gizi Dan Kesehatan Mengkonsumsi Ikan Di Sekolah Dasar Indrawan, Gede Surya; Padmiswari, A.A. Istri Mas; Antari, Ni Wayan Sukma; Damayanti, Ida Ayu Manik; Wulansari, Nadya Treesna; Adiana, I Nengah; Sutrisna, Putu Gede; Wicaksana, IGA Tresna
Jurnal Abdimas ITEKES Vol 3 No 2 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Institute Teknologi dan Kesehatan (ITEKES) Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37294/jai.v3i2.581

Abstract

Ikan merupakan salah satu sumber protein hewani yang banyak dikonsumsi masyarakat, mudah didapat, dan harganya murah. Nilai gizi dari ikan meliputi protein, karbohidrat, vitamin, mineral, dan asam lemak omega 3 yang memiliki manfaat baik untuk tubuh. Kandungan asam amino dan omega 3 pada ikan juga jauh lebih baik jika dibandingkan dengan bahan pangan yang bersumber dari protein lainnya. Tujuan dari kegiatan ini adalah untuk meningkatkan pengetahuan siswa mengenai nilai gizi dan kesehatan mengkonsumsi ikan. Kegiatan edukasi mengenai nilai gizi dan Kesehatan mengkonsumsi sangat penting dilakukan di SDN 1 Cemagi. Kegiatan diikuti oleh 50 orang siswa kelas IV sampai kelas VI dimana mereka diberikan edukasi atau penyuluhan mengenai hal tersebut. Untuk mengukur keberhasilan kegiatan, siswa diminta untuk mengisi pretest dan posttest yang terdiri dari 10 pertanyaan yang berkaitan dengan nilai gizi dan kesehatan ikan. Kegiatan ini berhasil dilakukan karena terdapat peningkatan pengetahuan siswa yang signifikan mengenai nilai gizi dan kesehatan mengkonsumsi ikan. Adanya dukungan dari guru dan orang tua dalam kegiatan seperti ini perlu dilakukan berkelanjutan dalam upaya peningkatan pengetahuan gizi anak di sekolah dasar. Kata Kunci: pengetahuan, nilai gizi, kesehatan ikan
Kondisi Makrozoobentos Kaitannya dengan Ekosistem Mangrove di Kawasan Mangrove Estuari Perancak, Jembrana, Bali Purba, Sindi Krisanti; Indrawan, Gede Surya; Suteja, Yulianto
Buletin Oseanografi Marina Vol 14, No 1 (2025): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v14i1.64699

Abstract

Ekosistem mangrove memainkan peran penting dalam mendukung kehidupan akuatik, sebagai sumber makanan, tempat pembesaran dan tempat pemijahan bagi berbagai organisme akuatik. Kondisi lingkungan mangrove sangat memengaruhi keberadaan biota perairan, terutama makrozoobentos. Penelitian ini dilakukan untuk mengetahui kelimpahan makrozoobentos, kondisi kerapatan mangrove, serta hubungan parameter lingkungan dan kerapatan mangrove dengan kelimpahan makrozoobentos menggunakan pendekatan Principal Component Analysis (PCA). Penelitian ini dilakukan pada bulan Oktober 2023 di ekosistem mangrove Perancak, Jembrana, Bali dengan pengambilan sampel di tiga jenis habitat mangrove: mangrove alami, restorasi, dan campuran. Data mangrove dikumpulkan menggunakan transek berukuran 10x10m2, adapun pengambilan data makrozoobentos menggunakan transek 1x1m2.. Hasil pengukuran kualitas air menunjukkan suhu berkisar antara 28,67-30,87OC, pH 6,25-6,45, salinitas 27,78-30,89‰, oksigen terlarut 2,15-2,81 mg/L dan kadar nitrat 0,49-0,97 mg/L. Nilai tersebut menunjukkan bahwa kondisi kualitas air pada lokasi penelitian dalam kondisi baik dan mendukung pertumbuhan makrozoobentos. Selain itu, tekstur sedimen didominasi oleh substrat lempung liat berdebu. Makrozoobentos yang ditemukan terdiri dari 15 spesies dari 10 famili dan 3 kelas yaitu Gastropoda, Polychaeta, dan Malacostraca. Kelimpahan makrozoobentos berkisar antara 12,87-16,3ind/m2, sedangkan kerapatan mangrove berada pada kategori sangat padat dengan nilai antara 2300-3566 ind/ha. Indeks keanekaragaman 1,52-2,31, indeks keseragaman 0,78-0,9, dan indeks dominansi 0,12-0,29. Nilai indeks ekologi ini menunjukkan bahwa makrozoobentos berada dalam kondisi seimbang. Berdasarkan hasil analisis PCA, kelimpahan memiliki korelasi positif dengan variabel kerapatan mangrove, suhu, oksigen terlarut (DO), dan pH. 
Kandungan Nitrogen (N) dan Fosfor (P) Pada Sedimen Mangrove Di Taman Hutan Raya Bali Harifah, Zahwa Aulia Nurul; Gede Surya Indrawan; I Putu Yogi Darmendra
ULIL ALBAB : Jurnal Ilmiah Multidisiplin Vol. 4 No. 5: April 2025
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jim.v4i5.8876

Abstract

Penelitian ini bertujuan mengetahui kandungan nitrogen (N), kandungan fosfor (P), kerapatan jenis, serta keanekaragaman mangrove di Taman Hutan Raya Bali. Pada penelitian terdapat 3 stasiun dan masing-masing terdapat 3 plot di setiap stasiun. Mengunakan metode purposive sampling pada tiap stasiun. Berdasarkan hasil penelitian menunjukan ditemukan sebanyak 4 jenis yaitu: Rhizophora apiculata, Rhizophora mucronata, Bruguiera gymnorrhiza, dan Sonneratia alba dengan jumlah spesies yang paling banyak yaitu Soneratia alba dengan jumlah 210 individu dan jumlah yang paling sedikit ialah Bruguiera gymnorrhiza dengan jumlah 23 individu. Nilai kadar kandungan nitrogen terbesar berada pada stasiun I plot ke-3 sebesar 0,39% dan nilai kadar kandungan nitrogen terkecil berada pada pada stasiun III plot ke-3 sebesar 0,03%. Serta nilai kadar kandungan fosfor terbesar berada pada stasiun I plot ke-1 sebesar 81,08 ppm dan nilai kadar kandungan fosfor terkecil berada pada pada Stasiun II plot ke-2 sebesar 4,51 ppm. Nilai kerapatan mangrove termasuk kriteria sangat rapat dengan nilai antara 3133- 5067 (pohon/ha). dengan nilai keanekaragaman sebesar 0,86 dengan kategori keanekaragaman rendah, keseragaman 0,77 dengak kategori keseragaman tinggi, dan dominansi 0,74 yang menandakan terdapat dominansi. Parameter lingkungan rata rata seperti suhu sekitar 29,55℃, sedangkan nilai rata rata dari salinitas adalah 30,06 ppt dan pH rata-rata adalah 5,98.
Asosiasi Gastropoda dengan Padang Lamun di Pantai Geger, Nusa Dua, Bali Sidik, Awalul Rizal Rohman; Indrawan, Gede Surya; Atmaja, Putu Satya Pratama
ULIL ALBAB : Jurnal Ilmiah Multidisiplin Vol. 3 No. 3: Februari 2024
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jim.v3i3.2916

Abstract

The Nusa Dua coast is an area that has a diverse ecosystem, ranging from coral reefs, mangrove forests and seagrass beds. Seagrass beds themselves play an important role in marine ecosystems and are used as shelter, foraging areas and spawning grounds for animals that live in seagrass habitats, one of which is gastropods. Gastropods have an important role in aquatic ecosystems, namely helping in the process of mechanical decomposition of organic material through their feeding activity, which will then be used by seagrass plants to carry out photosynthesis to support the growth of seagrass. The aim of this research is to analyze the community structure of Gastropods and to analyze the association between Gastropods and seagrass in the waters of Geger Beach, Nusa Dua, Bali. Samples were taken from 3 stations, station 1 was in a location next to a rocky road, station 2 was in a location where there were many fishing boats, and station 3 was in a location where there were no fishing boats. In the waters of Geger Beach, 5 types of seagrass species were found consisting of Thalassia hemprichii, Enhalus acoroides, Cymodocea rotundata, Halophilla ovalis, and Syringodium isoetifolium. At Geger Beach, 25 families, 76 species and 276 individuals were obtained of gastropods, with a diversity (H') value of 2.10, uniformity (E) of 0.59, and dominance (D) of 0.19. These results indicate that the Gastropod structure at Geger Beach is in a stable condition. The association between Gastropods and seagrass beds is dominated by associations with a very low category, which has an association value of <0.22 for 295 species. This is thought to be due to the low number of species appearing and the existence of competition between the two species at the observation location.
Estimasi Kandungan Karbon Pada Sedimen di Hutan Mangrove Karangsewu, Bali Dzaki Adilla Razaan; Gede Surya Indrawan; I Dewa Nyoman Nurweda Putra
ULIL ALBAB : Jurnal Ilmiah Multidisiplin Vol. 3 No. 5: April 2024
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jim.v3i5.3277

Abstract

Ekosistem mangrove mampu mereduksi CO2 melalui mekanisme sekuestrasi, sehingga berperan penting dalam mitigasi perubahan iklim yang disebabkan oleh pemanasan global. Hutan mangrove di Karangsewu adalah bagian dari Taman Nasional Bali Barat (TNBB) yang merupakan kawasan pelestarian alam yang mempunyai fungsi sebagai habitat flora dan fauna, perlindungan bencana tsunami, serta tempat serapan karbon dalam mencegah pemanasan global. Tujuan penelitian ini yaitu untuk mengestimasi nilai kandungan karbon pada sedimen serta menganalisis variasi secara vertikal persentase karbon organik yang tersimpan dalam sedimen di hutan mangrove Karangsewu, Bali. Kandungan karbon dari sedimen hingga kedalaman 1 m dianalisis dengan metode LOI (loss on ignition). Estimasi nilai simpanan karbon sedimen mangrove di Karangsewu, Taman Nasional Bali Barat adalah sebesar 900,48 ton/ha. Nilai kandungan karbon organik terendah berada di zona paling depan pada kedalaman 0-25 cm yaitu bernilai 4,6%. Sedangkan, nilai tertinggi berada di zona paling belakang di kedalaman 75-100 cm dengan nilai 6,1%. Dari hasil yang diperoleh konsentrasi karbon organik akan semakin meningkat seiring bertambahnya kedalaman.
DNA Barcoding of Cardinalfish (Apogonidae) in Gilimanuk Bay, Bali, Indonesia Putra, I Nyoman Giri Putra; Indrawan, Gede Surya; Faiqoh, Elok
Jurnal Ilmiah Perikanan dan Kelautan Vol. 16 No. 1 (2024): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.vi.43336

Abstract

Abstract The Apogonidae is estimated to consist of nearly 300 fish species, most of which inhabit coral reef areas. The lack of distinctive body markings and overlapping species distribution makes species assignment challenging. Therefore, this study aimed to delineate species and establish barcoding reference databases of Apogonidae in Gilimanuk Bay (Bali, Indonesia) using the Cytochrome Oxidase I (COI) gene of the mitochondrial DNA. A total of 22 fish tissue samples were extracted with 10% Chelex solution. BLAST analysis was performed and genetic differentiation between species was calculated. The phylogenetic tree was constructed using the Maximum Likelihood method and tree visualization was generated using iTOL V5. The morphology and genetic identification results based on the mitochondrial COI gene revealed eight species of seven genera, and one species was new to GenBank online database. This study was the first-ever addition of COI sequence for Ostorhinchus hartzfeldii into the GenBank database. The average K2P genetic distance within species and K2P distance between genera within the family were 0.60% and 19.10%, respectively. The mean genetic distance between genera within the family was 31.8-fold higher than the mean genetic distance within species. The phylogenetic tree showed that each sample resided in a distinct cluster, which indicates that DNA barcoding is a reliable and effective approach for species delimitation in Apogonidae fishes. Highlight Research Eight species of cardinalfish in Gilimanuk Bay were delineated using the barcoding method. This study provides the first nucleotide sequence for Ostorhinchus hartzfeldii in GenBank online database. The phylogenetic tree showed that each sample resided in a distinct cluster, indicating that the barcoding method efficiently differentiated at the species level. The mean genetic distance between genera within the family was 31.8-fold higher than the mean genetic distance within species.
Co-Authors Abd. Rahman As-syakur Adi Ariyanto Wibisono Adiana, I Nengah Anisa Setyawati Atmaja, Putu Satya Pratama Bertha Ayu Andhira Deny Suhermawan Yusup Devi Ulinuha Dewa Ayu Intan Tirta Sari Dzaki Adilla Razaan Elok Faiqoh Harifah, Zahwa Aulia Nurul I Dewa Nym. Nurweda P., I Gede Andika Wijantara I Gede Hendrawan I Gede Mita Anjas Swara I Gusti Ngurah Putra Dirgayusa I Komang Agus Parnata I Made Saka Wijaya I Made Sara Wijana I Made Sara Wijana I Made Yunarta I Putu Aditya Budi Wacika I Putu Sugiana I Putu Sugiana I Putu Sugiana I Putu Yogi Darmendra I Wayan Arthana I Wayan Arthana I Wayan Eka Dharmawan I Wayan Gede Astawa Karang I Wayan Nuarsa Ida Ayu Manik Damayanti Ida Bagus Putu Adi Gita Saputra Idam Bali Haryono Komang Kartika Indi Swari Luh Putu Diah Ananda Wijayanti M. Rheza Rizki Syahputra Muhammad Imran Zaelani Nadya Treesna Wulansari Ni Wayan Sukma Antari Padmiswari, A.A. Istri Mas Pande Ketut Cahya Krisnanta Arioka Pande Komang Egar Prihandana Purba, Sindi Krisanti Putra, I Nyoman Giri Putra, I Nyoman Giri Putra Putu Angga Wiradana Rahardja, Viryanando Evan Rijal Rahmatullah Sidik, Awalul Rizal Rohman Sutrisna, Putu Gede Viryanando Evan Rahardja Wibisono, Adi Ariyanto Wicaksana, IGA Tresna Wijaya, I Made Saka Yulianto Suteja