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Unstain N. W. J. Rembet, Unstain N. W. J.
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Economic Analysis of Coral Reefs in Bahoi Village, North Minahasa District Rembet, Unstain N. W. J.; Wantasen, Adnan S.
Jurnal Ilmiah PLATAX Vol 3, No 2 (2015): EDISI JULI - DESEMBER 2015
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.3.2.2015.13226

Abstract

For the management activity of coastal area, especially coral reefs, need basic data about economic condition of the coral reefs. Therefore, to manage the ecosystem of coral reefs in Bahoi Village, need an analysis act of economic condition. Whereas, for the economic values, analyze base on direct use of the society. Total economic values of the coral reefs in Bahoi Village, analyze only from the direct use. At the moment its about Rp.2.420.130.000/year. This values is the acumulation from the direct use of fisheries (coral fish) about Rp.2.368.980.000/year and the direct use of the tourism about Rp.51.150.000/year. The relation of ecological and economic condition, base on the result of the coefficient values is 0.0887 for coral and 0.2470 for algae, indicated that 1% growth of the coral coverage unit, will raise 8.87% unit of the total fish. Likewise, 1% growth of the algae coverage, will raise 24.70% of the total fish. In other words, every growth of the coral coverage and algae coverage, will raise the total fish. The relation of fish diversity and fishing trip to the fisherman income, the coefficient values is 2.7475 for fish diversity and 1.1693 for fishing trip, indicated that 1% growth of fish diversity fish, will raise 274.75% unit of the fisherman income. Likewise, 1% growth of fishing trip per month, will raise 116.93% unit of the fisherman income. To improve the ecological condition that finally can increase the society income, therefore activity that cause damage to the coral reefs, such as fishing with “bubu” and coral mining, need to be stopped. It’s also need to develop the other benefit of coral reefs, like tourism. Key words : analysis, ekonomic, ekological, coral reff Abstrak   Untuk suatu kegiatan pengelolaan wilayah pesisir khususnya terumbu karang, diperlukan data dasar mengenai nilai ekonomi dari terumbu karang. Oleh sebab itu guna pengelolaan ekosistem terumbu karang di Desa Bahoi perlu dilakukan pengkajian ekonomi. Nilai ekonomi total dari terumbu karang di Desa Bahoi hanya dilihat dari nilai manfaat langsung, yang saat ini memiliki nilai sebesar Rp 2.420.130.000/tahun. Nilai ini merupakan akumulasi dari manfaat langsung perikanan tangkap (ikan karang) sebesar Rp 2.368.980.000/tahun dan manfaat langsung wisata sebesar Rp 51.150.000/tahun. Hubungan kondisi ekologi dan ekonomi dilihat dari nilai koefisien yang diperoleh yaitu 0.0887 untuk karang batu dan 0.2470 untuk algae  menunjukkan bahwa setiap pertambahan 1% dari satuan tutupan karang batu akan diikuti dengan penambahan 8.87% satuan jumlah ikan. Demikian juga dengan penambahan 1% satuan tutupan algae akan dikuti dengan penambahan 24.70% satuan jumlah ikan. Dengan kata lain, setiap penambahan tutupan karang dan tutupan algae akan diikuti dengan peningkatan jumlah ikan. Dalam hubungan keanekaragaman ikan dan trip penangkapan terhadap pendapatan nelayan nilai koefisien yang diperoleh yaitu 2.7475 untuk keanekaragaman ikan dan 1.1693 untuk trip penangkapan, menunjukkan bahwa setiap pertambahan 1% dari satuan keanekaragaman ikan akan diikuti dengan penambahan 274.75% satuan pendapatan nelayan. Demikian juga dengan penambahan 1% satuan jumlah trip per bulan akan dikuti dengan penambahan 116.93% satuan pendapatan nelayan. Untuk meningkatkan kondisi ekologi, yang pada akhirnya akan meningkatkan penghasilan masyarakat, maka kegiatan yang mengakibatkan rusaknya terumbu karang seperti penangkapan ikan dengan bubu dan penambangan karang harus dihentikan, serta perlu dikembangkannya manfaat lain terumbu karang seperti pariwisata yang sangat potensial untuk dikembangkan di wilayah ini. Kata-kata kunci : kajian, ekonomi, ekologi, terumbu karang   1 Dibiayai oleh Direktorat Pendidikan Tinggi dalam program PENPRINAS MP3EI 2015-2016 2 Staf pengajar pada Fakultas Perikanan dan Ilmu Kelautan UNSRAT
Marine Sustainable Yield Analysis of Pelagic Fisheries in Sea Based on Catch Landing data From Tumumpa Fishery Harber, Manado North Sulawesi Rumambi, David Y; Rembet, Unstain N. W. J.; Sangari, Joudy R. R.
Jurnal Ilmiah PLATAX Vol 6, No 1 (2018): EDISI JANUARI-JUNI 2018
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.6.1.2018.17866

Abstract

This research activity took place in Manado City, North Sulawesi Province with activities centered on the Tumumpa Fishery Harbor (PPP). The data were recorded from capture fisheries activity conducted in the Sulawesi Sea and its surroundings landed in the Tumumpa Fishery Harbor. The purpose of this study was to analyze the stock value and Maximum Sustainable Yield (MSY) of pelagic fish in the Sulawesi Sea based on the approach of the surplus production model (Model Schaefer). This research is expected to be used as a consideration in the management of pelagic fish stocks in the Sulawesi Sea, and can be used as a basis for further research. This research uses secondary data collection method in the form of statistical document and record available. The data taken, including fish catch and fishing effort or effort (trip), from 2012 to 2016 (5 years). The results show that production value is inversely proportional to the value of effort, where the value of production from 2012 to 2016 has decreased every year, while the value of effort from 2012 to 2016 has increased. This condition indicates that the presence of pelagic fish stocks in the Sulawesi Sea and surrounding areas has been and is experiencing a decline that impacts on the decrease of production every year with a large percentage and this condition also indicates the occurrence of potentially overfishing. The value of MSY utilization of capture fishery resources in the Sulawesi Sea based on Tumumpa Fishery Harbor data were 16,305.45 tons / year for HMSY and 1,664,59 trips / year for EMSY, with TAC of 13,044.36 tons / year.Keywords :  Capture fishery, MSY, Pelagic, Surplus Production Model, Tumumpa ABSTRAK Kegiatan penelitian ini berlangsung di Kota Manado, Provinsi Sulawesi Utara dengan kegiatan berpusat di Pelabuhan Perikanan Pantai (PPP) Tumumpa Manado. Aktivitas perikanan tangkap yang ditelaah berlangsung di kawasan perairan Laut Sulawesi dan sekitarnya berdasarkan data PPP Tumumpa Manado. Tujuan dari penelitian ini adalah untuk menganalisis nilai stok dan Maximum Sustainable Yield (MSY) ikan pelagis di Laut Sulawesi berdasarkan pendekatan model produksi surplus (Model Schaefer). Penelitan ini diharapkan dapat digunakan sebagai bahan pertimbangan dalam pengelolaan stok ikan pelagis di Laut Sulawesi dan sekitarnya, serta dapat digunakan sebagai dasar untuk penelitian selanjutnya. Penelitian ini menggunakan metode pengumpulan data sekunder berbentuk dokumen. Data yang diambil adalah data tangkapan ikan dan upaya penangkapan ikan atau effort (trip), dari tahun 2012 sampai dengan 2016 (5 Tahun). Hasil penelitian menunjukkan nilai produksi berbanding terbalik dengan nilai effort, di mana nilai produksi dari tahun 2012 sampai 2016 mengalami penurunan setiap tahunnya, sedangkan nilai effort dari tahun 2012 sampai tahun 2016 mengalami peningkatan. Kondisi yang terjadi ini mengindikasikan bahwa keberadaan stok ikan pelagis di Laut Sulawesi dan sekitarnya telah dan sedang mengalami penurunan yang berdampak pada penurunan produksi setiap tahun dengan persentase yang cukup besar di mana kondisi ini mengindikasikan terjadinya overfishing. Nilai MSY pemanfaatan sumber daya perikanan tangkap di Laut Sulawesi berdasarkan data PPP Tumumpa Manado sebesar 16.305,45 ton/tahun untuk HMSY, dan 1.664,59 trip/tahun untuk EMSY, dengan TAC sebesar 13.044,36 ton/tahun.Kata Kunci: Perikanan Tangkap, MSY, Pelagis, Model Produksi Surplus, Tumumpa
Structure Of Mangrove Community In Palaes Village Coastal West Likupang District, North Minahasa Tulenan, Maryand M.; Wantasen, Adnan S.; Rembet, Unstain N. W. J.
Jurnal Ilmiah PLATAX Vol 6, No 1 (2018): EDISI JANUARI-JUNI 2018
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.6.1.2018.18902

Abstract

Indonesia is a tropical archipelago shaped (13,664 Island) with an estimated coastline along (95,181 km) get hold of a good area for the growth of mangrove plants. ). The area thrives in mangrove estuaries or estuaries which is the ultimate goal of the organic particles or sediment mud washed from upstream akibar the presence of erosion. The fertility of the region is also determined by the presence of the nutrient mentransportasi of ups and downs. According to the Directorate General of Rehabilitas Social Forestry land and extensive Mangrove Forests in Indonesia in 1999 was estimated at 8.60 million hectares will be but around 5.30 million hectares in a State of disrepair. While FAO data (2007) extensive Mangrove Forests in Indonesia in 2005 only reaches 3,062,300 haor 19% of the vast Mangrove Forests in the world and the largest in the world surpassing Australia (10%) and Brazil (7%). Mangrove forest condition in the village of Palaes still good enough, this is because the villagers very Palaes keep the existence of mangrove forests. Additionally the utilization of mangrove forests for household needs Palaes's village community is relatively small and yet still giving effect to the environment of mangrove ecosystems. This funded research activities in the area of the coastal village of Palaes Sub-districtLikupang Barat Regency North Minahasa in North Sulawesi province, in may 2016. Use the quadrant method followed by the analysis of the community structure. Quadrant method undertaken by the way pull line transek daro land into the ocean then put the quadrant line 10. After quadrant is laid do data retrieval of vegetation after it conducted an analysis of the data by using the structure of the community. Based on the types of mangroves found in the village of Palaes Sub-district Likupang Barat Regency North Minahasa mangrove species found 6 different family and Rizhopora apiculata is a species of the most influential in the mangrove community in the area of such. And found the value of diversity index 1.73. The identification of the types of mangroves found in the village of Palaes Sub-district Likupang Barat Regency North Minahasa found as many as 501 individuals from 6 species in 4 families namely Rizophoraceae, Lytraceae, Meliaceae and Avicenniaceae as for species found namely Rizhopora mucronata, Sonneratia caseolaris, Rizhopora apiculata and Bruguiera gymnorrhiza, Xylocarpus granatum,and Avicennia officinalis.­­Keys: Mangrove, environment, vegetation, komonitas. AbstrakIndonesia merupakan daerah tropis berbentuk kepulauan (13.664 pulau) dengan garis pantai yang diperkirakan sepanjang (95.181 km) meenjadi kawasan yang baik bagi pertumbuhan tanaman mangrove. ). Mangrove tumbuh subur di daerah muara sungai atau estuari yang merupakan daerah tujuan akhir dari partikel-partikel organik ataupun endapan lumpur yang terbawa dari daerah hulu akibar adanya erosi. Kesuburan daerah ini juga ditentukan oleh adanya pasang surut yang mentransportasi nutrient.Berdasarkan data Direktorat Jendral Rehabilitas Lahan dan Perhutanan Sosial luas hutan Mangrove di Indonesia pada tahun 1999 diperkirakan mencapai 8.60 juta hektar akan tetapi sekitar 5.30 juta hektar dalam keadaan rusak. Sedangkan data FAO (2007) luas hutan Mangrove di Indonesia pada tahun 2005 hanya mencapai 3,062,300 ha atau 19% dari luas hutan Mangrove di dunia dan yang terbesar di dunia melebihi Australia (10%) dan Brazil (7%).Kondisi hutan mangrove di Desa Palaes masih cukup baik, hal ini dikarenakan masyarakat Desa Palaes sangat menjaga keberadaan hutan mangrove. Selain itu pemanfaatan hutan mangrove untuk kebutuhan rumah tangga masyarakat Desa Palaes relatif masih kecil dan belum menimbulkan dampak terhadap lingkungan ekosistem mangrove.Kegiatan Penelitian ini di laksanakan di kawasan pesisir pantai Desa Palaes Kecamatan Likupang Barat Kabupaten Minahasa Utara Provinsi Sulawesi Utara, pada bulan Mei 2016. Menggunakan metode kuadran yang dilanjutkan dengan analisis struktur komunitas.Metode kuadran dilakukan dengan cara menarik line transek daro darat ke laut kemudian meletakkan sebanyak 10 line kuadran tersebut. Setelah kuadran diletakkan dilakukan pengambilan data vegetasi setelah itu dilakukan analisis data dengan menggunakan struktur komunitas.Berdasarkan jenis mangrove  yang ditemukan di Desa Palaes Kecamatan Likupang Barat Kabupaten Minahasa Utara ditemukan  6 spesies mangrove dari famili yang berbeda dan Rizhopora apiculata  merupakan spesies yang paling berperan dalam komunitas mangrove di daerah tersebut. Dan didapati nilai indeks keanekaragaman 1,73.Identifikasi jenis mangrove yang ditemukan di Desa Palaes Kecamatan Likupang Barat Kabupaten Minahasa Utara ditemukan sebanyak 501 individu dari 6 spesies yang termasuk dalam 4 famili yaitu Rizophoraceae, Lytraceae, Meliaceae dan Avicenniaceae Adapun spesies yang ditemukan yaitu  Rizhopora mucronata, Rizhopora apiculata, Sonneratia caseolaris dan Xylocarpus granatum, Bruguiera gymnorrhiza,dan Avicennia officinalisKeys : Mangrove,Lingkungan, Vegetasi, komonitas.  
Economic Value of Tourism in Bunaken Island based on Travel Cost Method Lalenoh, Anna Maria; Pratasik, Silverter B.; Rembet, Unstain N. W. J.; Suhaeni, Siti; Moningkey, Ruddy D.
Jurnal Ilmiah Platax Vol. 9 No. 1 (2021): ISSUE JANUARY - JUNE 2021
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.9.1.2021.32466

Abstract

The objective of the study was to obtain the economic value of tourism in Bunaken Island. It employed Travel Cost Method (TCM), the expenses spent by the visitors from their house to Bunaken Island and during their stay on the island. Questioneers were used as a data collection tool. There were 100 respodents selected using accidental sampling and purposssive sampling. Data analysis applied travel costs of the visitors to Bunaken Island. Results revealed that total economic value based on the total travel costs of IDR. 147.875.000 with an average of IDR. 1.478.750/pers. was IDR. 257.262.425.875. This value is expected to be able to give significant contribution to the social-economic development to Bunaken Island communities, Manado, North Sulawesi.Keywords:  Tourism; expense; economic contribution; community. AbstrakTujuan penelitian adalah untuk mendapatkan nilai ekonomi wisata di Pulau Bunaken. Penelitian ini menggunakan Travel Cost Method (TCM), yaitu biaya yang dikeluarkan oleh pengunjung dari tempat tinggal dan selama berada di Pulau Buanken. Kuesioner digunakan sebagai alat pengumpul. Data 100 orang responden yang dipilih menggunakan accidental sampling dan purpossive sampling. Pengolahan data menggunakan biaya perjalanan responden ke Pulau Bunaken. Hasil menujukkan bahwa total nilai ekonomi berdasarkan total biaya perjalanan sebesar Rp. 147.875.000 dengan rata-rata biaya perjalanan sebesar Rp. 1.478.750/orang, sehingga total nilai ekonomi Pulau Bunaken adalah sebesar Rp. 257.262.425.875. Nilai ini diharapkan akan memberikan efek yang signifikan bagi pertumbuhan sosial ekonomi khususnya masyarakat Pulau Bunaken, masyarakat Kota Manado dan provinsi Sulawesi Utara.Kata kunci: Pariwisata; biaya; kontribusi ekonomi; masyarakat.
Antibacterial Activity of Stylissa carteri Sponge Extract from Manado Bay, North Sulawesi Palungan, Irpan; Bara, Robert Antonius; Mangindaan, Remy Emile Petrus; Kemer, Kurniati; Wullur, Stenly; Rembet, Unstain N. W. J.
Jurnal Ilmiah Platax Vol. 10 No. 1 (2022): ISSUE JANUARY-JUNE 2022
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v10i1.36020

Abstract

Marine sponges contain secondary metabolites with unique chemical structures and very interesting pharmacological activities, such as antibacterial, anticancer, antiviral and others to be developed as candidate drugs. The presence of bioactive metabolites in sessile nature such as sponges also reflects the ecological adaptation formed during a long evolutionary process as a defense mechanism of this organism with its environment in the form of resistance to predation, competition and infection factors against pathogenic bacteria, so this study aims to examine the antibacterial activity of extracts and fractions of Stylissa carteri sponge fractions as well as testing the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) values. The method used in testing the antibacterial activity is the agar diffusion method (Disc Diffusion Kirby Bauer Method). The presence of antibacterial activity was indicated by the formation of a clear zone around the paper disc after incubation for 24 hours. The results showed that antibacterial activity of S. carteri sponge extract tested on Bacillus megaterium DSM32T bacteria revealed to be the strongest inhibition zone of 21 mm. Further testing on the extract fraction of S. carteri showed that the semipolar fractions showed strong activity against the B. megaterium while the polar fraction was categorized as moderate action, the non-polar fraction showed no activity against the bacteria. The determination of the MIC and MBC values was obtained at 500 ppm and 1000 ppm respectively.
Food Habits of Lencam Lethrinu Food Habits of Lencam Lethrinus rubrioperculatus Sato, 1978 (Fish: Lethrinidae) Tampi, Aprillia A.; Bataragoa, Nego E.; Rangan, Jety K.; Rembet, Unstain N. W. J.; Mandagi, Stephanus V.; Boneka, Farnis B.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.43931

Abstract

This study was conducted to determine the type and composition of food contained in the stomach of the Spotchheek emperor Lethrinus rubrioperculatus in Napo Keluar Nain Likupang waters based on sex and body size. Samples were taken from the catch of fishermen and then the fish samples were then taken to the laboratory for data collection. The method used to determine the composition of fish food used the Index of preponderance (IP). The results showed that the food habits of Spotchheek emperor in Napo Luar Nain Likupang waters with the types of food contained in the stomach of Spotchheek emperor, namely fish, shrimp, gastropods, Polychaeta, crabs (megalopa), and octopus where the main food of Spotchheek emperor is IP fish (94,16%). While the main food based on sex and length of body size is fish, with male IP 96.98% and female 91.15% respectively, while based on body length of Spotchheek emperor where small IP 91.06%, medium IP 98.45% and large IP 82.22%. Keywords: Food, Likupang, preponderance Abstrak Penelitian ini dilakukan untuk mengetahui jenis dan komposisi makanan yang terdapat dalam lambung ikan lencam Lethrinus rubrioperculatus di Napo Keluar Nain Perairan Likupang berdasarkan jenis kelamin dan ukuran tubuh. Sampel diambil dari hasil tangkapan nelayan kemudian sampel ikan selanjutnya dibawah ke Labolatorium untuk pengambilan data. Metode yang digunakan untuk mengetahui  komposisi makanan ikan digunakan indeks bagian terbesar (IBT). Metode ini  digunakan untuk menilai bermacam-macam jenis makanan ikan. Hasil penelitian menunjukan bahwa kebiasaan makanan ikan lencam di Napo Keluar Nain Perairan Likupang dengan jenis makanan yang terdapat dalam lambung ikan lencam yaitu ikan, udang, gastropoda, polychaeta, kepiting (megalopa) dan octopus di mana makanan utama dari ikan lencam adalah ikan IBT (94,16%). Sedangkan makanan utama berdasarkan jenis kelamin dan panjang ukuran tubuh yaitu ikan, dengan masing-masing IBT  jantan 96,07% dan betina 91,15% sedangkan berdasarkan panjang ukuran tubuh ikan lencam IBT kecil 91,98%, sedang 98,45% dan besar 82,22%. Kata kunci: Makanan, Likupang, Indeks Bagian Terbesar.
Condition of Coral Reefs in the Waters of Kalasey Satu Village, Minahasa Regency, North Sulawesi Pitoy, Israel; Rembet, Unstain N. W. J.; Rondonuwu, Ari B.; Wantasen, Adnan S.; Kambey, Alex D.; Manu, Gaspar; Tombokan, John L.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.45892

Abstract

The waters of Kalasey I Village have various resources and environmental services that are the potential to be utilized sustainably, such as tourism. The development activities in the tourism sector look so fast in this area with the establishment of several tourism infrastructures, such as diving centers, cottages, resorts,s and restaurants. These activities are thought to be able to affect the coral reef ecosystem. This study aims to determine the coral reef conditions, especially the reef flat, based on the percent cover of the live corals. Data collection was carried out at a depth of 3 meters with 3 replications using an Underwater Photo Transect (UPT) technique. Data obtained were analyzed using Coral Point Count with excel extension (CPCe) software. Based on the percent cover of live corals, the condition of coral reefs in the Kalasey 1 village waters was classified as poor with a coral cover percentage of 2.93%. Keywords: Tourism development, Underwater Photo Transect (UPT), percent cover, coral point count (CPCe) Abstrak Perairan di Desa Kalasey I memiliki berbagai sumberdaya serta jasa lingkungan yang berpotensi untuk dimanfaatkan secara berkesinambungan seperti potensi pariwisata. Kegiatan pembangunan di sektor pariwisata terlihat begitu pesat di wilayah ini dengan berdirinya sejumlah infrastruktur pariwisata seperti diving center, cottage, resort dan rumah makan, dimana aktivitas tersebut diduga dapat mempengaruhi ekosistem terumbu karang. Penelitian ini bertujuan untuk mengetahui kondisi terumbu karang, khususnya rataan terumbu (reef flat), berdasarkan persentase tutupan karang di perairan Desa Kalasey I Kecamatan Mandolang Kabupaten Minahasa. Pengambilan data dilakukan pada kedalaman 3 meter dengan 3 ulangan, menggunakan teknik Underwater Photo Transect (UPT) dan data yang diperoleh dianalisis menggunakan software Coral Point Count with excel extension (CPCe). Diperoleh hasil kondisi terumbu karang tergolong dalam kategori miskin dengan persentase tutupan karang sebesar 2.93 %. Kata kunci: Pembangunan pariwiata, Underwater Photo Transect (UPT), persen tutupan, coral point count (CPCe)
Study of Seagrass Beds Condition Nearby Waters in Mokupa Village, Tombariri District, Minahasa Regency Lasut, Nicole Theresa; Tilaar, Sandra O.; Sondak, Calvyn F. A.; Rampengan, Royke M.; Sinjal, Chatrien A. L.; Rembet, Unstain N. W. J.
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.47685

Abstract

The existence of seagrass beds in a shallow water environment has an important ecological role for the organisms that depend on this ecosystem. This research was conducted with the aim of knowing the types of seagrass and the condition of the seagrass beds in the waters near Mokupa Village, where the beach is between Mokupa Resort and Lotus Resort Manado. The method used is a quadrant transect (vertically to the shoreline), the coordinates point 1°24'53" N 124°42'22" E is transect 1, 1°24'54" N 124°42'22" E is transect 2,  and 1°24'56.7" N 124°42'23.5" E is transect 3. In this study, 5 species of seagrass were found, namely: Syringodium isoetifolium, Cymodocea rotundata, Thalassia hemprichii, Enhalus acoroides, and Halophila ovalis. Cymodocea rotundata had the highest average seagrass cover per species, 15.349%, and Enhalus acoroides had the lowest average seagrass cover, 0.053%. The condition of the seagrass beds at the study site was included in the unhealthy category with a seagrass cover of 31.432%. Keywords: Mokupa Waters, Seagrass conditions, Cover, Seagrass bed Abstrak Keberadaan padang lamun di lingkungan perairan dangkal memiliki peranan ekologis yang penting bagi organisme yang bergantung dalam ekosistem ini. Penelitian ini dilakukan dengan tujuan untuk mengetahui jenis-jenis lamun dan kondisi padang lamun di perairan sekitar Desa Mokupa, dimana pantai berada di antara Mokupa Resort dan Lotus Resort Manado. Penelitian ini mengikuti Pedoman Status Padang Lamun KEPMEN LH 200/2004. Metode yang digunakan yaitu transek kuadran (tegak lurus garis pantai), dengan titik koordinat Transek 1 1°24'53" N 124°42'22" E, Transek 2 1°24'54" N 124°42'22" E, Transek 3 1°24'56.7" N 124°42'23.5" E. Pada penelitian ini ditemukan 5 jenis lamun yaitu: Syringodium isoetifolium, Cymodocea rotundata, Thalassia hemprichii, Enhalus acoroides dan Halophila ovalis. Cymodocea rotundata memiliki rata-rata penutupan lamun per jenis tertinggi yaitu 15,349%, dan Enhalus acoroides memiliki rata-rata penutupan lamun terendah yaitu 0,053%. Kondisi padang lamun di lokasi penelitian termasuk dalam kategori kurang sehat dengan penutupan lamun sebesar 31,432%. Kata kunci: Perairan Mokupa, Kondisi lamun, Penutupan, Padang lamun
Seagrass Community in the Coastal Waters of Sapa Village, Tenga District, South Minahasa Regency, North Sulawesi Province Runturambi, Melinda; Menajang, Febry S. I.; Kondoy, Khristin I.F.; Rembet, Unstain N. W. J.; Manginsela, Fransine B.; Kambey, Alex D.
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.48258

Abstract

Sapa Village, Tenga District, South Minahasa Regency, North Sulawesi Province has a seagrass meadow ecosystem, but there is still a lack of information about the seagrass community in the waters of Sapa Village, which is the reason for researching the presence of seagrass in these waters. With the aim of knowing the types of seagrass, environmental conditions, species density, relative density, domination index, and species diversity index. Based on the results of observations at the location, it showed a temperature of 30OC, salinity of 30‰, pH 8, and sandy substrate and coral rubble. The results of the identification there are 4 types of seagrass namely Thalassia hemprichii, Syringodium isoetifolium, Cymodocea rotundata, and Halodule uninervis. The type with the highest number of individuals vizThalassia hemprichii with a total of 694 individuals, Halodule uninervis 557 individuals, Cymodocea rotundata358 individuals andSyringodium isoetifolium 324 individuals. Density index type (10,80 – 23,13 individuals/m2), relative density (16.76 - 35.90%) dominance index D = 0.32, and diversity H = 1.33. Keywords: seagrass, sapa village, community structure Abstrak Desa Sapa Kecamatan Tenga Kabupaten Minahasa Selatan Provinsi  Sulawesi Utara memiliki ekosistem padang lamun namun masih kurangnya informasi mengenai komunitas lamun di perairan Desa Sapa ini menjadi alasan untuk meneliti tentang keberadaan lamun di perairan tersebut. Dengan tujuan untuk mengetahui jenis-jenis lamun, kondisi lingkungan, Kepadatan spesies, Kepadatan Relatif, Indeks Dominasi, dan  Indeks Keanekaragaman Spesies. Berdasarkan hasil pengamatan di lokasi menunjukan suhu 30oC, salinitas 30‰, pH 8 dan substrat berpasir serta pecahan karang. Hasil identifikasi terdapat 4 jenis lamun yaitu Thalassia hemprichii, Syringodium isoetifolium, Cymodocea rotundata, dan Halodule uninervis. Jenis dengan jumlah individu terbanyak yaitu Thalassia hemprichii dengan jumlah  694 individu, Halodule uninervis 557 individu, Cymodocea rotundata 358 individu dan Syringodium isoetifolium 324 individu. Indeks kepadatan jenis (10,80 – 23,13 individu/m2), kepadatan relatif (16,76 - 35,90%) indeks dominasi D=0,32 dan keanekaragaman H= 1,33. Kata kunci: lamun, desa sapa, struktur komunitas
Condition of Coral Reefs in the Waters of Popareng Village, Tatapaan District, South Minahasa Regency Losu, Anggun; Rondonuwu, Ari B.; Kambey, Alex D.; Rembet, Unstain N. W. J.; Rangan, Jety K.; Manembu, Indri Shelovita
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.49488

Abstract

Bunaken National Park is known for its beautiful underwater scenery, with potential for coral reefs and tourism activities, such as diving and snorkeling. The waters of Popareng village is located in the southern part of Bunaken National Park. This study aims to determine the coral reef components and conditions based on the percent coral cover in Popareng waters, Tatapaan district, South Minahasa regency. A descriptive method was used in this study. Data collection was conducted at the depth of 7 meters with 4 replications using an Underwater Photo Transect (UPT) method. Data were analysed using the Coral Point Count with Excel Extension (CPCe) application. Results revealed that the coral reef components included 24 biotic categories and 3 abiotic categories, with the lowest percent coral cover found in the Acropora Digitate (ACD) category at 0.03%. The coral reef conditions this area is moderate with percent cover of 33.92%. Abstrak Taman Nasional Bunaken dikenal dengan keindahan bawah lautnya, memiliki potensi terumbu karang, dan potensi parawisata dengan kegiatan utama yang dapat dilakukan adalah diving dan snorkeling (Handoyo dan Johanis, 2021). Perairan Desa Popareng merupakan bagian selatan dari Kawasan Taman Nasional Bunaken. Penelitian ini bertujuan untuk mengetahui komponen bentik penyusun terumbu karang dan kondisi terumbu karang, berdasarkan persentase tutupan karang di perairan Desa Popareng Kecamatan Tatapaan Kabupaten Minahasa Selatan. Metode deskriptif digunakan dalam penelitian ini. Pengambilan data dilakukan pada kedalaman 7 meter dengan 4 ulangan, menggunakan metode Underwater Photo Transect (UPT). Data lapangan yang diperoleh dianalisis menggunakan aplikasi Coral Point Count with excel extension (CPCe). Hasil penelitian ini ditemukan komponen bentik penyusun terumbu karang meliputi 24 kategori biotik dan 3 kategori abiotik, dan persentase tutupan tertinggi ditemukan kategori yaitu Rubble (R) sebesar 21,13%, sedangkan persentase tutupan terendah berada pada kategori Acropora Digitate (ACD) sebesar 0,03%. Diperoleh hasil kondisi terumbu karang tergolong dalam kategori cukup dengan persentase tutupan karang sebesar 33,92
Co-Authors Adnan Wantasen Alex D. Kambey Ari B. Rondonuwu Calvyn F. A. Sondak, Calvyn F. A. Farnis B. Boneka Fransine B. Manginsela Gaspar Manu Indri Manembu John L. Tombokan Kindangen, Rezky G. T. L Kondoy, Khristin I.F. Kurniati Kemer Lalenoh, Anna Maria Lasut, Nicole Theresa Losu, Anggun Mandagi, Stephanus V. Mangindaan, Remy Emile Petrus Menajang, Febry S. I. Moningkey, Ruddy D. Nego E. Bataragoa, Nego E. Palungan, Irpan Pitoy, Israel Pratasik, Silverter B. Rangan, Jety K. Robert A. Bara Royke M. Rampengan Rumambi, David Y Runturambi, Melinda Sandra Tilaar Sangari, Joudy R. R. Sinjal, Chatrien A. L. Siti Suhaeni, Siti Stenly Wullur Tampi, Aprillia A. Tulenan, Maryand M.