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All Journal AQUATIC SCIENCE & MANAGEMENT e-Journal BUDIDAYA PERAIRAN JURNAL ILMIAH PLATAX JURNAL PERIKANAN DAN KELAUTAN TROPIS
Adnan Wantasen
Fakultas Perikanan Dan Ilmu Kelautan Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Environmental Science

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Journal : JURNAL ILMIAH PLATAX

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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
Mapping of Mangrove Diversity in Kelurahan Tongkaina, Bunaken Sub-District, Manado Puasa, Rio N.; Wantasen, Adnan S.; Mandagi, Stephanus V.
Jurnal Ilmiah PLATAX Vol 6, No 1 (2018): ISSUE JANUARY-JUNE 2018
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.6.1.2018.19542

Abstract

This research was conducted in coastal area of Tongkaina Village, Bunaken Sub-district, Manado City, North Sulawesi Province. The purpose of this study was to calculate the diversity of mangrove plants and map the zoning of mangrove species distribution in three research sites. The data collected are categorized as primary and secondary data. Primary data collection related to biophysical condition of mangrove ecosystem, including vegetation structure and area of mangrove cover in study site and further analyzed. Secondary data were collected from various literature studies, documentation and scientific papers and related legislation. Based on  the obtained results, it was known that the diversity index of mangrove in Tongkaina is 1.71 which is categorized as medium in term of its diversity, because the value of H 'is greater than 1 and smaller than 3. This value means also that there was enough productivity, ecosystem condition is quite balanced, and moderate ecological pressures. The highest species diversity index was found in Sonneratia alba with an index of 0.37 and the lowest was in the Bruguiera gymnorrhiza species with index of 0.06. Mapping of mangrove species is done by taking coordinate points within quadrant at three research sites. Color degradation with rounded symbols are used to distinguish each species. The aims are designed to be able to easily distinguish between species visually and can be used as one method of mapping study on the diversity of mangroves. This study reveals the known levels of mangrove diversity are moderate. The existence of fishing activities and mooring boat by the local community contribute to mangrove land degradation. Indispensable protection or conservation through knowledge transfer and building awareness to the community, as well as providing an economic alternative for those utilizing mangrove for both household and commercial needs, in order to maintain better conditions are equally important.Keywords: Mapping, Mangrove, Diversity, TongkainaAbstrakPenelitian ini berlokasi di kawasan pesisir pantai Kelurahan Tongkaina, Kecamatan Bunaken Kota Manado Provinsi Sulawesi Utara. Tujuan dari penelitian ini yaitu untuk menghitung keanekaragaman hutan mangrove serta memetakan zonasi pembagian jenis mangrove di tiga stasiun penelitian. Data yang dikumpulkan adalah data primer dan data sekunder. Pengumpulan data primer berkaitan dengan kondisi biofisik ekosistem mangrove yaitu, struktur vegetasi dan luasan mangrove di daerah penelitian dan selanjutnya dianalisis. Kemudian data sekunder dikumpulkan dari berbagai kajian literature, dokumentasi dan tulisan-tulisan ilmiah serta peraturan perundang-undangan terkait. Pada hasil yang diperoleh diketahui nilai indeks keanekaragaman mangrove di Tongkaina adalah 1,71 dimana nilai indeks ini tergolong dalam kategori keanekaragaman sedang, karena nilai H’ lebih besar dari 1 dan lebih kecil dari 3, yang berarti produktivitas cukup, kondisi ekosistem cukup seimbang, dan tekanan ekologis sedang. Indeks Keanekaragaman spesies tertinggi didapati pada Sonneratia alba dengan nilai indeks 0,37 dan terendah ada pada spesies Bruguiera gymnorrhiza yang memiliki nilai indeks yaitu 0,06. Pemetaan jenis mangrove dilakukan dengan cara pengambilan titik koordinat pada kuadran di tiga stasiun penelitian. Degradasi warna dengan simbol bulat di pakai untuk membedakan tiap spesies. Hal ini bertujuan agar dapat dengan mudah membedakan antar spesies secara visual serta dapat dijadikan salah satu metode kajian untuk memetakan keanekaragaman mangrove. Diketahui tingkat keanekaragaman mangrove tergolong sedang. Adanya kegiatan pertambakan dan tambatan perahu masyarakat membuat lahan mangrove semakin berkurang. Sangat diperlukan adanya perlindungan atau pelestarian melalui pengetahuan dan penyadaran kepada masyarakat, serta memberikan alternatif ekonomi bagi yang memanfaatkan mangrove baik untuk kebutuhan rumah tangga ataupun komersial, demi menjaga perkembangan kondisi yang lebih baik.Kata kunci:      Pemetaan, Mangrove, Keanekaragaman, Tongkaina
Community Structure and Percent Cover of Mangrove in Gamtala Village, Jailolo District, West Halmahera Regency Nity, Elroi; Darwisito, Suria; Schaduw, Joshian N.W.; Wantasen, Adnan S.; Sumilat, Deiske A.; Onibala, Hens
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.7.1.2019.23377

Abstract

This study aims to know the percent cover of mangrove and to assess the community structure. It was carried out in Gamtala village, Jailolo district, and west Halmahera regency, using line transect method with 10x10 m plot.. Data analysis covered the community structure and percent cover of mangrove canopy. This study found seven mangrove species, Bruguiera gymnorrhiza, Rhizophora apiculata, Sonneratia alba, Rhizophora mucronata, Avicennia alba, Bruguiera sexangula, dan  Xylocarpus granatum. Based on Importance Value Index (IVI), Bruguiera gymnorhiza had the highest, 149.06, and Avcsennia alba did the lowest, 9.3507. In addition, Gamtala village had manrove percent cover of 72.11 %.Keywords: canopy, community structure, mangrove, Gamtala.ABSTRAKTujuan dari penelitian ini adalah untuk mengetahui persentasi tutupan mangrove dan menghitung struktur. Penelitian ini dilakukan di Desa Gamtala Kecamatan Jailolo Kabupaten Halmahera Barat. Penelitian ini menggunakan metode transek garis dengan 10x10 m plot. Penelitian ini menemukan tujuh spesies mangrove, yaitu Bruguiera gymnorrhiza, Rhizophora apiculata, Sonneratia alba, Rhizophora mucronata, Avicennia alba, Bruguiera sexangula, dan  Xylocarpus granatum. Berdasarkan Indeks Nilai Penting, Bruguiera gymnorhiza memiliki nilai tertinggi, 149,06, dan Avcsennia alba memiliki nilai terendah 9,3507. Sebagai tambahan, desa Gamtala memiliki tutupan mangrove sebesar 72,11 %.Kata Kunci: kanopi, struktur komunitas, mangrove, Gamtala
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.  
Spatial Distribution of Marine Debris on Northern Coastal Waters of Minahasa Moningka, Ivana Trixie Louisa; Sangari, Joudy R. R.; Wantasen, Adnan S.; Lumingas, Lawrence J. L.; Moningkey, Ruddy D.; Pelle, Wilmy E.
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.9.1.2021.34021

Abstract

Marine debris is one of the biggest pollution problems in the world. There are various potentials of marine and beach tourism to attract tourists, but in turn, cause a waste disposal accumulation and coupled with the built-in garbage that comes from the sea. The research was conducted at Tasik Ria Beach, Tombariri, and Marine Field Station of the Faculty of Fisheries and Marine Sciences, Sam Ratulangi University in Likupang. The aims of this study were (1) to identify the types of marine debris, and (2) to determine and compare the spatial distribution pattern of marine debris in the two designed locations. The sampling technique adapted from the shoreline survey methodology designed by NOAA was used in the study. Data were then statistically processed and analyzed using data mining software (MS Excel and Orange). This study found that the category of plastic and rubber waste is the most common category with the total amount on Tasik Ria Beach 54.39% and 97.55% in the Marine Field Station of Faculty of Fisheries and Marine Sciences in Likupang respectively. The correlation coefficient between the composition of the amount and mass of marine debris is 0.89 which indicates a close relationship between the amount and mass composition. There are many factors that cause the distribution of various types of marine debris, one of which is the activities of the people around the coastal area.Keywords: Marine debris; Category; Type; CompositionAbstrakSampah laut merupakan salah satu masalah polusi yang besar di dunia. Beragam potensi wisata bahari dan pantai menjadi daya tarik wisatawan namun aktivitas wisata dapat mengakibatkan adanya buangan sampah oleh masyarakat dan wisatawan, ditambah lagi dengan sampah bawaan yang berasal dari laut. Penelitian ini dilakukan di Pantai Tasik Ria, Tombariri dan Laboratorium Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi untuk mengidentifikasi jenis sampah laut di perairan pantai Minahasa bagian utara dan mengetahui persebaran dan perbandingan distribusi sampah laut dua lokasi penelitian. Berdasarkan hasil pengambilan sampel dengan mengadaptasi metode Shoreline Survey Methodology berdasarkan NOAA yang kemudian diolah dan dianalisis secara statistik dengan menggunakan beberapa perangkat lunak (MS Excel dan Orange) diperoleh kategori sampah plastik dan karet sebagai kategori yang paling banyak ditemukan dengan komposisi jumlahnya di Pantai Tasik Ria sebesar 54,39% dan 97,55% di Laboratorium Fakultas Perikanan dan Ilmu Kelautan. Nilai koefisien korelasi antara komposisi jumlah dan massa sampah laut sebesar 0.89 yang menyatakan hubungan yang erat antara komposisi jumlah dan massa. Banyaknya faktor yang menyebabkan terdistribusinya beragam jenis sampah laut, salah satunya adalah aktivitas masyarakat di sekitar wilayah pesisir.Kata kunci: Sampah Laut; Kategori; Jenis; Komposisi
Structure of the Seagrass Community in Meras Beach, Bunaken District, Manado City, North Sulawesi Manurung, Nia Dopa; Kondoy, Khristin; Rondonuwu, Ari B.; Wantasen, Adnan; Mantiri, Rose O. S. E.; Manengkey, Hermanto
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.v10i1.37826

Abstract

Seagrass is a flowering plant (Angiospermae) that grows and breeds on the bottom of shallow sea waters, from tidal areas (intertidal zone) to sublittoral areas. The role of seagrass in shallow marine waters is as a primary producer, as a habitat for biota, catching sediments, and a nutrient recycler. The existence of seagrass is influenced by several factors, namely: temperature, salinity, depth, brightness, nutrients, and salinity. The purpose of this study was to determine the Relative Density, Relative Abundance, Relative Dominance, Frequency, Relative Frequency, Important Value Index, Diversity Index, and Dominance Index, to determine the types of seagrass and to determine the condition of the aquatic environment. This research uses the quadratic methods and line transect. This research was conducted on May 28, 2021, at Meras Beach, Bunaken District, Manado City, North Sulawesi. The number of stands of seagrass species in the study area ranged from 23-320 individuals, species density (8.36-116.36 individuals/m2), relative density (3.62-50.47%), frequency of presence (0.037- 0.50 ), relative frequency (3.62- 50.47%), dominance index (0.072-1.009), the diversity index (1.236), index of the importance of seagrass in Meras Coastal Waters showed that Cymodocea rotundata had the highest important value index among the 5 seagrass species, namely 151.41%. There are 5 species of seagrass found in Meras Coastal Waters, namely, Enhalus acoroides, Syringodium isoetifolium, Halophila ovalis, Cymodocea rotundata, Thalassia hemprichii. The environmental conditions in Meras Beach are temperature 29°C, salinity 35‰, the brightness is quite clear and has a substrate of sand, muddy, sand mixed with mud, muddy mixed with sand, and coral fragments.Keywords: Meras Beach; Seagrass; Community Structure.AbstrakLamun (seagrass) adalah tumbuhan berbunga (Angiospermae) yang tumbuh dan berkembang biak pada dasar perairan laut dangkal, mulai daerah pasang surut (zona intertidal) sampai dengan daerah sublitoral. Peranan lamun di lingkungan perairan laut dangkal sebagai produsen primer, sebagai habitat biota, penangkapan sedimen dan sebagai pendaur zat hara. Keberadaan lamun dipengaruhi oleh beberapa faktor yaitu: suhu, salinitas, kedalaman, kecerahan, nutrient dan salinitas. Tujuan penelitian ini adalah untuk mengetahui Kepadatan Relatif, Kelimpahan Relatif, Dominasi Relatif, frekuensi, Frekuensi Relatif, Indeks Nilai Penting, Indeks Keanekaragaman, dan Indeks Dominasi, untuk mengetahui jenis-jenis lamun dan untuk mengetahui bagaimana kondisi lingkungan perairan. Adapun penelitian ini menggunakan metode kuadrat dan line transek. Penelitian ini dilaksanakan pada tanggal 28 Mei 2021, dilakukan di Pantai Meras, Kecamatan Bunaken, Kota Manado, Sulawesi Utara. Jumlah tegakan spesies lamun di lokasi penelitian berkisar dari 23-320 individu, kepadatan spesies (8,36-116,36 individu/m2), kepadatan relatif (3,62- 50,47%), frekuensi kehadiran (0,037- 0,50) , frekuensi relatif (3,62- 50,47%), indeks dominasi (0,072-1,009), indeks keanekaragaman (1,236), indeks nilai penting lamun di Perairan Pantai Meras menunjukkan bahwa Cymodocea rotundata memiliki indeks nilai penting paling tinggi diantara ke 5 spesies lamun yakni 151, 41 %). Spesies lamun yang ditemukan di Perairan Pantai Meras berjumlah 5 yaitu, Enhalus acoroides, Syringodium isoetifolium, Halophila ovalis, Cymodocea rotundata, Thalassia hemprichii. Kondisi lingkungan di Perairan Pantai Meras yakni suhu 29°C, salinitas 35‰, kecerahan cukup jernih dan memiliki substrat pasir, berlumpur, pasir bercampur lumpur, berlumpur campur pasir dan pecahan karang. Kata kunci: Pantai Meras; Lamun; Struktur Komunitas.
Composition and Condition Of Coral Reefs In Dudepo Cape, South Bolaang Mongondow Regency, North Sulawesi Ali, Fajri Nurul; Rondonuwu, Ari B.; Pratasik, Silvester B.; Wantasen, Adnan S.; Bataragoa, Nego E.; Kusen, Janny D.
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.v10i1.38203

Abstract

This study aims to determine the composition and condition of coral reefs in Dudepo Cape, South Bolaang Mongondow Regency. The method used is Line Intercept Transect (LIT). Data were collected by SCUBA diving at 3 meters and 10 meters depths. In 3 meters depth was found biotic components such as Acropora and non-Acropora with 6 growth forms, and five other biotic components, while abiotic components were only found in coral rubbles (R). In 10 meter depth was found biotic components live coral with 7 growth forms, and five other biotic components, while the abiotic components as sand and coral rubbles. In two depths, the coral reef component dominant were Acropora digitate (ACD) and Acropora branching (ACB). The condition of coral reefs at 3-meter depth and 10 meters were  “Fair”  with the percent cover of live corals being 35.59% and 37.30%.Keywords: Coral; Coral Reef; ConditionAbstrakPenelitian ini bertujuan untuk mengetahui komposisi dan kondisi terumbu karang di Tanjung Dudepo Kabupaten Bolaang Mongondow Selatan. Metode yang digunakan dalam penelitian ini yaitu Line Intercept Transect (LIT). Pengambilan data dilakukan dengan penyelaman SCUBA pada kedalaman 3 meter dan 10 meter. Pada kedalaman 3 meter ditemukan komponen biotik berupa karang hidup acropora dan non-acropora dengan 6 bentuk pertumbuhan, dan 5 komponen biotik lainnya, sedangkan komponen abiotik hanya ditemukan berupa pecahan karang. Pada kedalaman 10 meter ditemukan komponen biotik berupa karang hidup dengan 7 bentuk pertumbuhan, dan 5 komponen biotik lainnya, sedangkan komponen abiotik berupa pasir dan pecahan karang. Pada dua kedalaman, bentuk pertumbuhan yang mendominasi yaitu acropora digitate dan acropora branching. Kondisi terumbu karang pada lokasi penelitian khususnya pada kedalaman 3 meter dan 10 meter yaitu berada pada kategori cukup dengan persentase tutupan sebesar 35,59% dan 37,30%. Kata kunci: Karang; Terumbu Karang; Kondisi.
Benefit Value of Mangrove Forest in Sarawet Village, Likupang Timur, Minahasa Utara Tamsir, Chika Litawaty; Lasabuda, Ridwan; Wantasen, Adnan S.; Kondoy, Khristin I. F.; Kambey, Alex D.; Sondak, Calvyn
Jurnal Ilmiah Platax Vol. 10 No. 2 (2022): ISSUE JULY-DECEMBER 2022
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v10i2.41499

Abstract

The purpose of this study is to: 1) identify various types of direct and indirect benefits of mangrove forests, and 2) estimate the total economic value of the mangrove forest in Sarawet Village. This type of research is descriptive and quantitative using survey methods. Data analysis in this study uses descriptive and quantitative analysis. Descriptive analysis is used to explain the activities of utilizing natural resources of mangrove ecosystems, while quantitative analysis is used to calculate the total economic value of mangrove ecosystems. The selection of respondents used the purposive sampling method, with a total of 76 respondents. Analysis of the total economic value for the value of direct benefits using market prices, and the value of indirect benefits using replacement costs. The results showed that the people of Sarawet Village use the mangrove forest ecosystem directly in the form of mangrove wood used as firewood and fence stakes, leaves Nipah are made with roofs, and the community carries out fishing and crab activities around mangrove waters.Analysis of the total economic value of the mangrove forest in Sarawet Village amounted to Rp. 6.884.344.178,-/year. The total economic value is obtained from the value of direct benefits including utilization as firewood Rp. 4,160,000,- /year; fence pegs Rp. 87.500,-/year; roof of the house Rp. 330.000,-/year; fishing Rp. 769.174.000,-/year; crab fishing is Rp. 190.320.000,-/year, and the value of indirect benefits is as a barrier to abrasion and seawater waves Rp. 5.920.272.678,-/year. The large economic value of the total mangrove forest ecosystem in Sarawet Village shows that the mangrove ecosystem provides great benefits to the community.Keywords: direct benefit value, indirect benefit value, total economic value, MangroveAbstrakThe purpose of this study is to: 1) identify various types of direct and indirect benefits of mangrove forests, and 2) estimate the total economic value of the mangrove forest in Sarawet Village. This type of research is descriptive and quantitative using survey methods. Data analysis in this study uses descriptive and quantitative analysis. Descriptive analysis is used to explain the activities of utilizing natural resources of mangrove ecosystems, while quantitative analysis is used to calculate the total economic value of mangrove ecosystems. The selection of respondents used the purposive sampling method, with a total of 76 respondents. Analysis of the total economic value for the value of direct benefits using market prices, and the value of indirect benefits using replacement costs. The results showed that the people of Sarawet Village use the mangrove forest ecosystem directly in the form of mangrove wood used as firewood and fence stakes, leaves Nipah are made with roofs, and the community carries out fishing and crab activities around mangrove waters.Analysis of the total economic value of the mangrove forest in Sarawet Village amounted to Rp. 6.884.344.178,-/year. The total economic value is obtained from the value of direct benefits including utilization as firewood Rp. 4,160,000,- /year; fence pegs Rp. 87.500,-/year; roof of the house Rp. 330.000,-/year; fishing Rp. 769.174.000,-/year; crab fishing is Rp. 190.320.000,-/year, and the value of indirect benefits is as a barrier to abrasion and seawater waves Rp. 5.920.272.678,-/year. The large economic value of the total mangrove forest ecosystem in Sarawet Village shows that the mangrove ecosystem provides great benefits to the community.Keywords: direct benefit value, indirect benefit value, total economic value, Mangrove.
Carbon Absorption in Seagrasses in Tongkaina Coastal Waters, Bunaken District, Manado City, North Sulawesi Namoua, Dilivia J.; Wantasen, Adnan S.; Kondoy, Khristin I. F.; Kepel, Rene Ch.; Menajang, Febry S. I.; Pelle, Wilmy
Jurnal Ilmiah Platax Vol. 10 No. 2 (2022): ISSUE JULY-DECEMBER 2022
Publisher : Sam Ratulangi University

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Abstract

This study was conducted to determine the types of seagrasses and calculate biomass and calculate how much carbon absorption in seagrasses was found in the location of Tongkaina Beach, Bunaken District, Manado City, North Sulawesi. The sampling procedure in the field is the method of cruising surveys. A cruising survey is a sample collection method that is carried out by walking through the coastal area of all seagrasses found.  After the sampling at the site is completed, the sample in the inventory is then photographed. The samples that have been obtained are analyzed in the laboratory using the loss on ignition (LOI) method. The results of the study on Tongkaina coastal waters covering an area of 25,000 meters with a coastal length of ±500 meters, in an area parallel to the coastline as wide as ±50 meters towards the sea and six types of seagrasses were obtained, namely: Enhalus acoroides, Thalassia hemprichii, Syringodium isoetifolium, Cymodocea rotundata, Halodule uninervis, and Halodule pinifolia.  The biomass in seagrasses found had an average value of 78.10% with the highest individual seagrass biomass found in seagrass type Enhalus acoroides with a biomass value of 87.23grams of dry weight (gbk)/individual and the lowest type of seagrass individual biomass value was found in seagrass type seagrass with a biomass value of 66.67grams of dry weight (gbk)/individual.  The total carbon content calculated in the entire seagrass obtained was 46,0941gCKeywords: Tongkaina Beach; seagrasses; biomass; carbon absorptionAbstrakPenelitian ini dilakukan untuk mengetahui jenis-jenis lamun dan menghitung biomassa serta menghitung berapa serapan karbon pada lamun yang ditemukan dilokasi Perairan Pantai Tongkaina Kecamatan Bunaken Kota Manado Provinsi Sulawesi Utara. Prosedur pengambilan sampel di lapangan menggunakan metode survei jelajah. Survei jelajah adalah metode pengumpulan sampel yang di lakukan dengan cara menyusuri daerah pantai terhadap semua lamun yang ditemukan. Setelah pengambilan sampel di lokasi selesai, sampel di inventarisir kemudian difoto. Sampel yang telah diperoleh dianalisa di laboratorium dengan menggunakann metode loss on ignition (LOI). Hasil penelitian pada perairan pantai Tongkaina seluas 25.000 meter dengan panjang pantai ±500 meter sejajar garis pantai dan lebar ±50 meter ke arah laut.  Ditemukan enam jenis lamun yaitu: Enhalus acoroides, Thalassia hemprichii, Syringodium isoetifolium, Cymodocea rotundata, Halodule uninervis dan Halodule pinifolia. Biomassa pada lamun yang ditemukan memiliki nilai rata-rata 78,53% dengan biomassa individu lamun tertinggi terdapat pada lamun jenis Enhalus acoroides dengan nilai biomassa mencapai 87,23gram berat kering (gbk)/individu dan nilai biomassa individu jenis lamun terendah terdapat pada lamun jenis Syringodium isoetifolium dengan nilai biomassa 66,67gram berat kering (gbk)/individu. Untuk total kandungan karbon yang dihitung pada keseluruhan lamun yang didapat sebesar 46,0941gC.Kata kunci: Pantai Tongkaina; Lamun; biomasa, serapan carbon
Morphometric and Meristic Yellowstrip Scad Selaroides leptolepis (Cuvier, 1833) Landed at TPI Tumumpa and PPI Kema Fajar Vafry; Manginsela, Fransine B.; Wantasen, Adnan S.; Mandagi, Stephanus V.; Tilaar, Ferdinand F.; Rimper, Joice R.T.S.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.v11i1.44335

Abstract

This research about morphometric and meristic character of yellow stripscad. Fish samples were selected from various sizes in order to represent the various sizes of yellow stripscad that existin nature. Samples of yellow stripscad were taken from fish landed at TPI Tumumpa as many as 60 tail and PPI Kema as many as 60 tail. The purpose of this study was to determine how the morphometric and meristic character of yellow stripscad landed in TPI Tumumpa and PPI Kema. Data analysis with K-mean cluster method using SPSS 25 and Ms. Excel 2019. Yellow stripscad landed in TPI Tumumpa and PPI Kema have different morphometric character with percentage difference of 95%. For meristic character have a fairly small lavel of difference with a difference of 29%. Keywords : yellow stripscad, morphometric, meristic, TPI Tumumpa, PPI Kema. Abstrak Penelitian ini mengenai karakter morfometrik dan meristik ikan selar kuning. Penelitian ini menggunakan metode deskriptif kuantitatif. Sampel ikan akan dipilih dari berbagai macam ukuran agar dapat mewakili berbagai macam ukuran ikan selar kuning yang ada di alam. Sampel ikan selar kuning diambil dari ikan yang didaratkan di TPI Tumumpa sebanyak 60 ekor dan di PPI Kema sebanyak 60 ekor. Tujuan dari penelitian ini untuk mengetahui bagaimana karakter morfometrik dan meristik ikan selar kuning yang didaratkan di TPI Tumumpa dan PPI Kema. Analisis data dengan metode K-mean cluster menggunakan program SPSS 25 dan Ms. Excel 2019. Ikan selar kuning yang didaratkan di TPI Tumumpa dan PPI Kema memiliki karakter morfometrik yang berbeda dengan persentase perbedaan sebesar 95%. Untuk  karakter meristiknya memiliki tingkat perbedaan yang cukup kecil dengan tingkat perbedaan sebesar 29%.  Kata- kata kunci : ikan selar kuning, morfometrik, meristik, TPI  Tumumpa, PPI Kema.  
Co-Authors . Tamrin Alex D. Kambey Alfret Luasunaung Ali Djamhuri Ali, Fajri Nurul Ari B. Rondonuwu Bataragoa, Nego Bawelle, Eunike Calvyn F. A. Sondak, Calvyn F. A. Cyska Lumenta Datunsolang, Frayogi Dei, Katrin Dowena Deiske Adeliene Sumilat, Deiske Adeliene Eddy Mantjoro Edwin D Ngangi Emil Reppie Fajar Vafry Fransine B. Manginsela Gaspar Manu Gybert E Mamuaya Hengky J. Sinjal, Hengky J. Henky Manoppo Henneke Pangkey Hens Onibala Indra R. N. Salindeho Indra Salindeho Ingrid Sembiring Janny D. Kusen Jardie A Andaki, Jardie A Jhonly Solang John L. Tombokan Joice R.T.S.L Rimper Joppy Mudeng Joshian N.W. Schaduw Juliaan Ch. Watung Kepel, Rene Ch. Khristin I. F. Kondoy, Khristin I. F. Kindangen, Rezky G. T. L Kondoy, Khiristin Ivone Fisye Kreckhoff, Reni L. Kusen, Diane J. Lalita, Jans Langi, Edwin O. Lawrence J. L. Lumingas Luasunaung, Alfrets Mamonto, Riswanto Mandagi, Stephanus Mandagi, Stephanus V. Manengkey, Hermanto Manu, Lusia Manurung, Nia Dopa Markus T. Lasut Marsaoly, Rafil Menajang, Febry S. I. Menajang, Febry Susana Ivone Mokolensang, Jeffrie F. Moningka, Ivana Trixie Louisa Moningkey, Ruddy D. Namoua, Dilivia J. Nego E. Bataragoa, Nego E. Nity, Elroi Ockstan J. Kalesaran Pangemanan, Novie P. L. Pangkey, Hanneke Pelle, Wilmy Pelle, Wilmy E. Peter Mangindaan Pitoy, Israel Puasa, Rio N. Rachim, M. Hatta Rauf, Aprianto Rembet, Unstain Rene Charles Kepel, Rene Charles Ridwan Lasabuda Rignolda Djamaluddin Roger R Tabalessy Rondonuwu, Arie B. Rose O. S. E. Mantiri, Rose O. S. E. Salindeho, Indra R. Sambali, Hariyani Sammy N. J. Longdong Sangari, Joudy R. R. Sartje Lantu Silvester B Pratasik Sipriana S. Tumembouw Srinurmahningsi, Sri Stephanus V Mandagi Suria Darwisito, Suria Suzanne L Undap Takou, Putri D. Tamsir, Chika Litawaty Tangkudung, Maureen J. N. N. Tarimakase, Yulianus Tilaar, Ferdinand F. Toar, Debby Tulenan, Maryand M. Tununu, Riky R. Unstain N. W. J. Rembet, Unstain N. W. J. Vivi A Pamikiran Wilhelmina Patty Wilmy E Pelle Winda Mercedes Mingkid Wungkana, Lucky Wungkana, Vike V. Yulianus D Dalengkade Yundari, Yundari