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All Journal AQUATIC SCIENCE & MANAGEMENT JURNAL PESISIR DAN LAUT TROPIS JURNAL ILMIAH PLATAX
Unstain N.W.J. Rembet
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science

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Journal : JURNAL ILMIAH PLATAX

 1 
KONDISI IKAN KARANG FAMILI CHAETODONTIDAE DI DAERAH PERLINDUNGAN LAUT DESA BAHOI KECAMATAN LIKUPANG BARAT KABUPATEN MINAHASA UTARA Jacqline Laikun; Ari B Rondonuwu; Unstain N.W.J. Rembet; Stephanus V. Mandagi
Jurnal Ilmiah PLATAX Vol. 2 No. 3 (2014): EDISI SEPTEMBER-DESEMBER 2014
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.2.3.2014.9121

Abstract

The coral reefs are a sundry of marine life. Which one is reef fish in family Chaetodontidae. This fish is  indicator of the coral reef condition. The aim from the research is : discover of spatial distribution of the reef fish family Chaetodontidae and find out of the intercourse of reef fish family Chaetodontidae with the coral reef presence based on growth of coral form. The research was do in the coral reef at Marine Protected Areas in Bahoi Village District of West Likupang North Minahasa Regency, on Tuesday, December 23rd, 2014. The research is using to do the surveying method. The data is collecting distribution of the fish Chaetodontidae (amount from species and individuals to using by technic visual census). The total of reef fish family Chaetodontidae those found in Marina Protected Areas in Bahoi Village is about 20 species, with total of the individuals at a depth of 3 meters and 10 meters is (56,66 and 57,33 individuals/150m2). Keywords : Coral reefs, Chaetodontidae, Bahoi   ABSTRAK Terumbu karang merupakan tempat berbagai macam biota laut. Salah satu Ikan karang adalah ikan famili Chaetodontidae. Ikan ini merupakan ikan indikator terumbu karang. Tujuan dari penelitian ini : mengetahui kelimpahan dari ikan karang famili Chaetodontidae. Penelitian ini dilakukan di Daerah Perlindungan Laut Desa Bahoi Kecamatan Likupang Barat Kabupaten Minahasa Utara, pada hari selasa, tanggal 23 Desember 2014. Penelitian ini menggunakan metode survey. Data yang dikumpulkan adalah kelimpahan ikan Chaetodontidae (Jumlah spesies dan individu dengan menggunakan teknik sensus visual). Jumlah ikan karang famili Chaetodontidae yang di temukan di Daerah Perlindungan Laut Desa Bahoi berjumlah 20 spesies, dengan jumlah individu pada kedalaman 3 meter dan 10 meter berjumlah (56,66 individu/150m2 dan 57,33/150m2 individu). Kata kunci : Terumbu karang, Chaetodontidae, Bahoi 1Bagian dari skripsi 2Mahasiswa Program Studi Manajemen Sumberdaya Perairan FPIK-UNSRAT 3Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi
The Distribution of Genus Favia (Oken, 1815) at the Reef Flats of Likupang Kampung Ambong Village Minahasa Utara . Reskiwati; Laurentius Th. X. Lalamentik; Unstain N.W.J. Rembet
Jurnal Ilmiah PLATAX Vol. 7 No. 1 (2019): ISSUE JANUARY-JUNE 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.1.2019.22597

Abstract

Six species of Favia were found in this study i.e, Favia pallida (Dana, 1846), Favia speciosa (Dana, 1846), Favia favus (Forskål, 1775), Favia truncatus (Veron, 2000), Favia rotundata (Veron and Pichon, 1977) and Favia matthaii (Vaughan, 1918). The species with the highest percentage of coral cover was Favia pallida (0,386 %). The values of Dominance Index showed that there were no dominant Favia species on Kampung Ambong coral reef flats. Diversity Index (H’) of Favia was 1,47. There are two distribution patterns shown by Favia on Kampung Ambong coral reef flats area, which are clumped and uniformed.Keywords: Favia, Distribution  ABSTRAKDalam penelitian ini ditemukan 6 spesies karang genus Favia, yaitu Favia pallida (Dana, 1846), Favia speciosa (Dana, 1846), Favia favus (Forskål, 1775), Favia truncatus (Veron, 2000), Favia rotundata (Veron and Pichon, 1977) dan Favia matthaii (Vaughan, 1918). Spesies dengan persentase tutupan karang tertinggi adalah Favia pallida (0,37 %). Nilai Indeks Dominasi menunjukkan tidak ada spesies karang genus Favia yang dominan pada rataan terumbu Kampung Ambong. Indeks keanekaragaman karang genus Favia menunjukkan nilai H’ = 1,47. Terdapat dua Pola distribusi yang diperoleh dari karang genus Favia di rataan terumbu Kampung Ambong, yaitu mengelompok dan seragam.Kata Kunci : Favia, Distribusi
Coral Reef Conditions of Hogow and Dakokayu Islands Southeast Minahasa Regency Billy N. Ompi; Unstain N.W.J. Rembet; Ari B. Rondonuwu
Jurnal Ilmiah PLATAX Vol. 7 No. 1 (2019): ISSUE JANUARY-JUNE 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.1.2019.22743

Abstract

This research objective was to determine the condition of Coral Reef ecosystems in Dakokayu and Hogow Islands, Southeast Minahasa Regency. The method that has been used in this studies that is Line Intercept Transect (LIT) by diving activities at 5 meter and 10 meters depth with 50 meters transect length. Each biota passed by the line transect recorded according based on shape of growth.Coral Reefs conditon in Hogow Island in 5 meters and 10 meters depth were categorized as a “Good” where the percentage of live coral cover in 5 meters depth is 70.12% and in 10 meters depth  is 55.78%. The condition of Coral Reefs on Dokokayu Island at a depth of 5 meters is categorized “Good” with the percentage of live coral cover is 56.32% while in the 10 meters depth it is categorized as “Medium” with the percentage of live coral cover is 48.10%. Water quality parameters such as temperature, salinity, brightness, pH, and dissolved oxygen (DO) are within the range of tolerance for Coral Reefs to survive.Keywords: Condition, Coral Reef, Hogow, DokokayuABSTRAKTujuan penelitian untuk mengetahui kondisi ekosistem terumbu karang di Pulau Dakokayu dan Pulau Hogow, Kabupaten Minahasa Tenggara.  Metode yang telah digunakan dalam penelitian ini yaitu Line Intercept Transek (LIT) dengan melakukan penyelaman pada kedalaman 5 dan 10 meter dengan panjang transek 50 meter.  Setiap biota yang dilewati transek akan dicatat menurut bentuk pertumbuhannya. Secara umum, kondisi terumbu karang di Pulau Hogow pada kedalaman 5 meter dan 10 meter, dikategorikan Baik dimana persentasi tutupan karang hidup pada kedalaman 5 meter sebesar 70,12% dan pada kedalaman 10 meter sebesar 55,78%.  Kondisi terumbu karang di Pulau Dokokayu pada kedalaman 5 meter dikategorikan Baik  dengan persentase tutupan karang hidup 56,32% sedangkan di kedalaman 10 meter dikategorikan  Sedang  dengan persentase tutupan karang hidup 48,10 %. Parameter kualitas perairan seperti suhu, salinitas, kecerahan, pH, dan oksigen terlarut (DO) berada dalam kisaran toleransi bagi terumbu karang untuk dapat bertahan hidup.Kata Kunci : Kondisi, Terumbu Karang, Hogow, Dokokayu
Coral Fishes the Famili Chaetodontidae in Coral Reef Waters of Para Island Sub District Tatoareng, Sangihe Kepulauan Regency Ari B. Rondonuwu; Unstain N.W.J. Rembet; Ruddy Dj. Moningkey; John L. Tombokan; Alex D. Kambey; Adnan S. Wantasen
Jurnal Ilmiah PLATAX Vol. 1 No. 4 (2013): Edisi September - Desember 2013
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.1.4.2013.3705

Abstract

This study aims to determine the distribution and abundance of reef fish families chaetodontidae in coral reef waters of Para Island Sub District Tatoareng. This study was conducted at 4 stations. Data collected was done using visual census on the 50-meter transect line at 5 meters depth. In addition to revealing the number of species and abundance of individuals chaetodontidae, data analysis aimed to determine number of species, individual abundance, and the community index. Based on the identification, obtained 27 species from 3 genera and 217 number of individuals.  The highest number of species found at station Para 1.  7 species are always found in all observation stations, Chaetodon kleinii, C. punctatofasciatus, C. lunulatus, C. trifascialis, C. vagabundus, Heniochus varius, H. chrysostomus. The species with the largest number of individuals that is Chaetodon kleinii (45 individuals). Chaetodontidae fish species diversity index ranged between 2.207-2.866. Dominance Index are categorized low in the range of 0.078-0.122.  Similarity index are categorized high in the range of 0.922-0.971. Keywords : coral fishes, chaetodontidae, coral reef, Para Island
Optimasi Berat Awal dan Kedalaman pada Vertikultur Caulerpa lentillifera Menggunakan Tali Nilon Monofilamen Ngangi, M.Si, Edwin L. A.; Wantasen, Adnan S.; Longdong, Sammy N. J.; Rembet, Unstain N.W.J.; Mudeng, Joppy D.
Jurnal Ilmiah PLATAX Vol. 14 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v14i1.66721

Abstract

This study aimed to analyze the effects of initial seed weight and cultivation depth on the growth of Caulerpa lentillifera in a vertical culture system using monofilament nylon rope as the planting medium in the coastal waters of Bahoi Village, North Minahasa. A 3×3 factorial design was applied, consisting of three initial weights (50 g, 100 g, and 150 g) and three depths (20 cm, 70 cm, and 120 cm), each with three replications. Observed parameters included absolute growth and specific growth rate (SGR) over a 28-day cultivation period. The results indicated that initial weight significantly affected growth, whereas depth had no significant effect and no interaction was detected between the two factors. The 50 g treatment produced the highest growth performance with an SGR of 1.39 ± 0.08% day⁻¹, which falls within the productivity range of tropical open-sea farming systems. These findings highlight that optimizing seed weight plays a more critical role than shallow depth variation in improving the cultivation efficiency of C. lentillifera under a monofilament nylon-based vertical culture system. Keywords: initial weight; marine aquaculture; C. lentillifera; monofilament nylon; vertical culture system. Abstrak.  Penelitian ini bertujuan menganalisis pengaruh berat awal bibit dan kedalaman pemeliharaan terhadap pertumbuhan Caulerpa lentillifera pada sistem vertikultur menggunakan tali nilon monofilamen sebagai media tanam di perairan Desa Bahoi, Minahasa Utara. Percobaan menggunakan rancangan faktorial 3×3 dengan tiga taraf berat awal (50 g, 100 g, dan 150 g) serta tiga taraf kedalaman (20 cm, 70 cm, dan 120 cm), masing-masing tiga ulangan. Parameter yang diamati meliputi pertumbuhan mutlak dan laju pertumbuhan harian (SGR) selama 28 hari. Hasil analisis menunjukkan bahwa berat awal berpengaruh signifikan terhadap pertumbuhan, sedangkan kedalaman tidak berpengaruh nyata dan tidak terdapat interaksi antara kedua faktor. Perlakuan 50 g menghasilkan pertumbuhan tertinggi dengan nilai SGR 1,39 ± 0,08% per hari. Nilai tersebut berada dalam kisaran produktivitas sistem budidaya laut terbuka tropis. Hasil penelitian ini menegaskan bahwa optimasi ukuran bibit lebih menentukan dibandingkan variasi kedalaman dangkal dalam meningkatkan efisiensi budidaya C. lentillifera pada sistem vertikultur berbasis tali nilon monofilamen. Kata kunci: berat bibit; budidaya laut; C. lentillifera; nilon monofilamen; sistem vertikal
Co-Authors . Reskiwati Adnan S. Wantasen Adnan Wantasen Alex D. Kambey Ari B Rondonuwu Ari B. Rondonuwu Billy N. Ompi Calvyn F. A. Sondak, Calvyn F. A. Erly Kaligis Grevo S Gerung Hartarto Sormin Indri Manembu Jacqline Laikun John L. Tombokan Joppy Mudeng Kumampung, Deslie Laurentius Th. X. Lalamentik Ngangi, M.Si, Edwin L. A. Ruddy Dj. Moningkey Sammy N. J. Longdong Stephanus V. Mandagi Takarendehang, Roberto