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All Journal AQUATIC SCIENCE & MANAGEMENT JURNAL PESISIR DAN LAUT TROPIS JURNAL ILMIAH PLATAX JURNAL PERIKANAN DAN KELAUTAN TROPIS Jurnal Kebijakan Sosial Ekonomi Kelautan dan Perikanan
Ridwan Lasabuda
Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science

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Study on Ecological Economic Benefits of Mangrove in Sauk Village, Lolak Sub-district, Bolaang Mongondow District Muhammad Yusran Boynauw; Ridwan Lasabuda; Unstain N. W. J. Rembet
Jurnal Ilmiah PLATAX Vol. 5 No. 2 (2017): ISSUE JULY - DECEMBER 2017
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.5.2.2017.15911

Abstract

This study was carried out in Sauk village,  Lolak district, Bolaang Mongondow regency on June 10th – August 11th, 2016, around mangrove ecosystem at the geographic position of 00 50’ 10’’ N and 1230 56’ 40’’E. It was aimed to a) assess the ecological condition of the mangrove ecosystem of Sauk village based upon the community structure and (b) estimate the economic value of the mangrove ecosystem from direct and indirect benefit. Results found that the ecological value of the mangrove ecosystem was categorized as “rare” (<1000 trees/Ha), with low diversity index (< 2), and Sonneratia alba had very important role with the highest IVI. Total economic value was IDR. 1,116,830,000 per year based upon the benefit value.Keywords : economic benefit, ecology, mangrove ecosystem, Sauk village. ABSTRAKPenelitian ini dilakukan di Desa Sauk Kec, Lolak Kab. Bolaang Mongondow pada tanggal 10 juni–11 Agustus 2016, di sekitaran kawasan ekosistem mangrove Desa Sauk yang terletak pada posisi geografis N 00 50’ 10’’ dan E 1230 56’ 40’’. Tujuan penelitian ini adalah : (a) Menilai kondisi ekologi ekosistem mangrove di Desa Sauk berdasarkan struktur komunitas. (b) Menghitung nilai ekonomi ekosistem mangrove berdasarkan nilai guna langsung dan tidak langsung. Nilai ekologi  ekosistem mangrove di Desa Sauk dikategorikan “jarang” (<1000 pohon per Ha), dengan indeks keanekaragaman  rendah (< 2) dan jenis yang yang sangat berperan adalah Sonneratia alba yang memliki INP tertinggi. Sedangkan nilai ekonomi total berdasarkan nilai manfaat sebesar Rp.1.116.830.000 per tahun.Kata Kunci : Manfaat ekonomi, ekologi ekosistem mangrove Desa Sauk
Ecosystem Protection Of Mangrove Based Society By Village Decision (Case In The Bay Of Labuan Uki, Regensi Of Bolaang Mongondow) Hariyano Hasantua; Ridwan Lasabuda; Adnan S. Wantasen
Jurnal Ilmiah PLATAX Vol. 5 No. 2 (2017): ISSUE JULY - DECEMBER 2017
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.5.2.2017.15933

Abstract

The decrease of mangrove ecosystem in the coast Labuan Uki bay loak subdistrict, bolaang mongondow province caused by conversion land on each parts of mangrove become industry area and people residance. It’s  has effect to fish production, when there has low area of mangrove aqual to fisherman income. It means that, mangrove has no fungsion as development facility of marine biota will give the effect to the organism in that area.To make protection to mangrove ecosystem area in the bay of Labuan Uki. The researcher do the research of mangrove ecosystem based society by village decision. To know the wide and the study case of useless in labuan uki area. The result of this research to analys using qualitatife description method.The result of this research to give information to the researcer about the village regulation able to accept by villager with one hundred percent (30 persons total respondents). Than in the village regulation is kinds of mangrove ecosystem protection  based society that purpose to the cuntinue basic development in the bay of labuan uki and have been to apply solid system and partnerships. And the wide of mangrove about ± 241.75 ha. In there has genus Rhizophora, genus Sonneratia, Genus Bruiguera and genus Avicennia. But the most genus in Labuan Uki is dominate of  genus Rhizphora. In this case has to identificate effect of this problem that is to find out location of it. For the first in Sauk village dusun 1 the wide about ± 7.500 m2 as a talung conversion area. Secondly batubara II village dusun 3 the wide about ± 204 m2 and ± 3 ha. To conversion as location to make residance and fishpond area. And the last Labuan Uki village dusun IV the wide about ± 3 ha and about ± 3 ha. To conversion as fishpond area and PT. BETAGAS factory area.The key : defect case, mangrove, joint village regulation ABSTRAK Berkurangnya ekosistem hutan mangrove di pesisir Teluk Labuan Uki Kecamatan Lolak, Kabupaten Bolaang Mongondow dikarenakan oleh konversi lahan pada beberapa daerah dari hutan mangrove menjadi daerah perindustrian dan pemukiman penduduk. Hal tersebut berpengaruh pada produksi perikanan, dimana penurunan areal hutan mangrove berbanding lurus dengan tingkat pendapatan nelayan. Artinya, hilangnya fungsi hutan mangrove sebagai fasilitas perkembangbiakan biota laut akan dapat mempengerahui keberadaan organisme laut disekitanya.Untuk mendekati upaya perlindungan di sekitar ekosistem hutan mangrove di kawasan teluk Labuan Uki, maka dilakukan penelitian ekosistem hutan mangrove berbasis masyarakat melalui penetapan peraturan desa bersama. Guna mengetahui luasan dan kasus kegiatan pemanfaatan yang terjadi di kawasan teluk Labuan uki. Hasil penelitian selanjutnya di analisis menggunakan metode deskriptif kualitatif.Hasil penelitian menunjukkan bahwa peraturan desa bersama dapat disetujui masyrakat desa dengan nilai 100 % (dari total responden 30 orang). Sedangkan penulisan peraturan desa bersama adalah bentuk upaya perlindungan ekosistem hutan mangrove berbasis masyarakat yang mengarah pada prinsip-prinsip pembangunan berkelanjutan teluk Labuan Uki dan telah menerapkan sistem keterpaduan dan kemitraan. Dan ekosistem hutan mangrove terdapat luas ± 241.75 ha. Serta banyak ditumbuhi oleh genus Rhizophora, genus Sonneratia, Genus Bruiguera dan genus Avicennia. Namun yang mendominasi kawasan teluk Labuan Uki adalah genus Rhizphora. Di samping itu, indentifikasi pemangku kepentingan dan permasalahan dari kasus kegiatan kerusakan hutan mangrove ditemukan beberapa titik, Desa Sauk dusun I luasan ± 7.500 m2 yang di konversi sebagai lahan talung (pemecah ombak) dan ± 1.500 m2 untuk  jalan perahu. Desa Baturapa II dusun 3 luasan ± 204 m2 dan ± 3 ha yang dikonversi sebagai lahan pembuatan rumah dan tambak. Dan Desa Labuan Uki dusun IV luasan ± 3 ha dan luasan ± 3 ha yang dikonversi sabagai lahan tambak dan perusahaan pabrik PT. BETAGAS.Kata kunci:      Kasus kerusakan, hutan mangrove, peraturan desa bersama.
Mangrove Community Characteristics and Local Fishermen’s Utilization in North Sulawesi Province: Case study on boat raft fishermen in Sauk village, Labuan Uki bay, Bolaang Mongondow regency Ridwan Lasabuda; Lawrence J. L. Lumingas; Rose O. S. E. Mantiri
Jurnal Ilmiah PLATAX Vol. 4 No. 2 (2016): EDISI JULI-DESEMBER 2016
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.4.2.2016.19011

Abstract

This study aims to analyze the characteristics of mangrove vegetation in Sauk village, Labuan Uki bay, and to know the exploitation activities and the community’s perception on mangrove ecosystem. Mangrove vegetation characteristic data were collected using transect line method in 3 stations, while mangrove utilization and community’s perception data were obtained through field observation, questioners, and structured interviews. Respondent sampling used purposive sampling, and the respondents were representatively selected based on profession background as boat raft fishermen.Results showed that mangroves in Sauk village consisted of 8 species, Avicennia officinalis Aegiceras floridum, Rhizophora apiculata, R. mucronata, R. stylosa, Bruguiera gymnorrhiza, Sonneratia alba, and S. casiolari. The density level was 689 trees.ha-1 (categorized as rare according to the decree of Living Evironment Minister Numbered 201/2004) and the mean vegetation spread was 95.16 M widely available from 22.70 Ha.People used the mangrove for firewood, building materials, boat frame, fish drying place, net dye material (tree skin), dahannya dibuat wadah bunga buatan, and fishing ground. Some people of the village clear cut the mangroves for boat sailing route, despite violating Indonesian Law numbered 27/ 2007 jo Low numbered 1/2014 concerning coastal area and small islands management.Sixty percent of the respondents understood that mangroves can be cut for various benefits, 40% knew that mangrove area is source of income, 40% as source of firewood, 10% as place where fish lay their eggs, and 10% as coast protection from abrasion.Keyword : mangrove, boat raft fishermen, Sauk village, Labuan Uki bay.ABSTRAKPenelitian ini bertujuan untuk   menganalisis karaktersitik vegetasi mangrove yang ada di desa Sauk Teluk Labuan Uki dan  mengetahui aktivitas pemanfaatan serta  persepsi masyarakat tentang ekosistem mangrove. Data karakteristik vegetasi  mangrove diambil menggunakan metode transek line  di 3  stasiun. Sedangkan data pemanfaatan mangrove dan persepsi masyarakat dikumpulkan melalui teknik observasi lapangan, pengisian kuesioner dan wawancara terstruktur. Pengambilan sampel responden menggunakan metode purposive sampling. Responden dipilih secara representatif berdasarkan latar belakang profesi sebagai nelayan bagan perahuHasil penelitian menggambarkan bahwa mangrove yang ada di  desa Sauk terdiri dari 8  spesies : Avicennia officinalis (api-api), Aegiceras floridum (api-api), Rhizophora apiculata (lolaro), Rhizophora mucronata(lolaro), Rhizophora stylosa (lolaro), Bruguiera gymnorrhiza (ting), Sonneratia alba (lolaro)  dan Sonneratia casiolari (posi-posi). Tingkat kerapatan 689 pohon/ha (kategori jarang sesuai Kepmen Lingkungan Hidup No 201 Tahun 2004). Ketebalan vegetasi mangrove rata2 95,16 meter dari luas yang tersedia 22,70 Ha.Masyarakat memanfaatkan mangrove untuk : sumber kayu bakar, dibuat bahan bangunan, dibuat rangka kapal, tempat menjemur ikan, kulitnya sebagai pewarna jaring, dahannya dibuat wadah bunga buatan, tempat menangkap ikan dan biota air lainnya. Selain itu ada oknum masyarakat desa Sauk yang menebang mangrove untuk membuat lintasan perahu,  dimana kegiatan ini bertentangan dengan UU No.27 Tahun 2007 jo UU No.1 Tahun 2014 tentang Pengelolaan Wilayah Pesisir dan Pulau2 Kecil. 60 % responden memahami bahwa mangrove adalah tumbuhan yang bebas ditebang untuk dimanfaatkan berbagai kepentingan. 40 % responden memahami kawasan mangrove adalah sumber pencaharian masyarakat lokal, 40 % responden memahami sebagai sumber untuk mencari kayu bakar, 10 % responden memahami sebagai tempat bertelur ikan, dan 10 % responden memahami sebagai penahan abrasi pantai.Keyword : mangrove, nelayan bagan perahu, desa Sauk, Teluk Labuan Uki
KEANEKARAGAMAN DAN KELIMPAHAN ECHINODERMATA DI PANTAI PANCURAN PULAU LEMBEH Yudith A. Christianti; Farnis B. Boneka; Erly Y. Kaligis; Chatrien A.L. Sinjal; Billy Th. Wagey; Ridwan Lasabuda
JURNAL PESISIR DAN LAUT TROPIS Vol. 11 No. 2 (2023): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.11.2.2023.53344

Abstract

Echinodermata are found quite commonly in the tidal areas of Lembeh Island but their diversityand abundance have not been well documented. The purpose of this study was to determine the typesof Echinoderms and their abundance at Pancuran Beach, Lembeh Island, Bitung City. Samples weretaken at two stations using the Lincoln-Smith Transect method 2 x 50 m which was stretchedperpendicular to the beach with three replications. Samples were identified in situ and the number ofindividuals of each species was noted. The results showed that in Pancuran Beach there were 18species of phylum Echinodermata; with details of 7 species from the Asteroidea class, 5 species ofEchinoidea, 4 species of Ophiuroidea, 2 species of Holothuroidea. The results of the analysis using thediversity index show that the diversity of Echinodermata at both stations is in the medium category,characterized by the value of H' = 2.06 for station I and H'= 2.35 for station II. At station 1, the type ofOphiocoma erinaceus has the highest density of 15 ind/100m2 and a relative abundance of 23.68%. Atstation II Echinothrix diadema has the highest abundance of 12 ind/100m2 with a relative abundance of17.14%. Common species found in both stations are Diadema setosum, Echinometra mathaei,Echinothrix diadema, Holothuria atra, Ophiocoma erinaceus, and Ophiocoma scolopendrina.Keywords: Lembeh Island, Diversity, Abundance, Echinoderms ABSTRAKEchinodermata ditemukan cukup umum di daerah pasang surut Pulau Lembeh namunkeanekaragaman dan kelimpahannya belum sepenuhnya didokumentasikan dengan baik. Tujuanpenelitian ini adalah untuk mengetahui jenis-jenis Echinodermata dan kelimpahannya di PantaiPancuran, Pulau Lembeh Kota Bitung. Sampel diambil pada dua stasiun dengan menggunakan metodeLincoln-Smith Transect 2 x 50 m yang dibentangkan tegak lurus ke arah pantai dengan tiga replikasi.Sampel diidentifikasi secara insitu dan jumlah individu tiap spesies dicatat. Hasil menunjukkan bahwadi Pantai Pancuran terdapat 18 spesies filum Echinodermata; dengan rincian 7 spesies dari kelasAsteroidea, 5 spesies Echinoidea, 4 spesies Ophiuroidea, 2 spesies Holothuroidea. Hasil analisamenggunakan indeks keanekaragaman menunjukkan bahwa diversitas Echinodermata pada keduastasiun dalam kategori sedang, ditandai dengan nilai H' = 2,06 untuk stasiun I dan H'= 2,35 untukstasiun II. Pada stasiun 1, jenis Ophiocoma erinaceus paling tinggi densitasnya yakni 15 ind/100m2dan kelimpahan relatif 23,68%, Pada stasiun II Echinothrix diadema memiliki kelimpahan tertinggi yakni12 ind/100m2 dengan kelimpahan relatif 17,14%. Jenis yang umum terdapat pada kedua stasiun adalahDiadema setosum, Echinometra mathaei, Echinothrix diadema, Holothuria atra, Ophiocoma erinaceus,dan Ophiocoma scolopendrina. Kata kunci: Pulau Lembeh, Keanekaragaman, Kelimpahan, Echinodermata
Macroalgae Biodiversity in Ondong Coastal Waters. Kandati, Feibe R. S.; Kepel, Rene Charles; Rangan, Jety Kornela; Gerung, Grevo S.; Salaki, Meiske Sofie; Lasabuda, Ridwan
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.9.1.2021.34136

Abstract

This research was conducted in the coastal waters of Ondong, West Siau District, Siau Islands Regency Tagulandang Biaro with the aim of knowing the composition of macroalgae taxa through a morphological approach. Data retrieval is done by using the Line Transect quadratic method. The results of the study found 15 species consisting of 3 divisions, 3 classes, 10 orders, 12 families, and 12 genera.AbstrakPenelitian ini dilakukan di perairan pesisir pantai Ondong, Kecamatan Siau Barat, Kabupaten Kepulauan Siau Tagulandang Biaro dengan tujuan untuk mengetahui komposisi taksa makroalga melalui pendekatan morfologi. Pengambilan data dilakukan dengan menggunakan metode Line Transect kuadrat. Hasil penelitian menemukan 15 spesies yang terdiri dari 3 divisi, 3 kelas, 10 ordo, 12 famili, dan 12 genera.
Structure Of The Mangrove Community In Meras Beach, Bunaken District, Manado City, North Sulawesi Situmorang, Ezra Monika; Kambey, Alex D.; Salaki, Meiske Sofie; Lasabuda, Ridwan; Sangari, Joudy R. R.; Djamaluddin, Rignolda
Jurnal Ilmiah Platax Vol. 9 No. 2 (2021): ISSUE JULY-DECEMBER 2021
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.9.2.2021.35323

Abstract

Meras is one of the sub-districts with high potential for coastal areas, located in Bunaken District, is the largest sub-district in Manado city, North Sulawesi, has a variety of complete coastal ecosystems such as mangrove forests. The potential of mangrove forests along the Meras coast in the northern part of Bunaken National Park has an important role in terms of ecology and economy as well as an important asset to be maintained and preserved. This study aims to determine the structure of the mangrove community and the current mangrove area. This research was conducted on May 29, 2021, carried out using the quadratic method. The results showed that the highest species density was Sonneratia alba with a value of 900 trees/ha with a relative density of 61.4%, while the lowest species density was Rhizophora mucronata (33 ind/ha) with a relative density of 2.3%. Furthermore, the highest frequency was found in the species Sonneratia alba and Avicenia marina with the same relative frequency value of 38%. Meanwhile, the species with the highest dominance value was Nypa fruticant, with a relative dominance value of 39.9%, and the species with the lowest value, Bruguiera gymnorhiza, with a relative dominance value of 4.6%. The results of the calculation of the mangrove area on the Meras beach are 53.9 hectares.Keywords: Meras Beach; Mangrove; Community StructureAbstrakHutan mangrove merupakan tipe hutan tropika dan subtropika yang khas, tumbuh di sepanjang pantai atau muara sungai yang dipengaruhi oleh pasang surut air laut. Kelurahan Meras adalah salah satu Kelurahan dengan potensi wilayah pesisir yang tinggi, terletak di Kecamatan Bunaken, merupakan wilayah kecamatan terluas di kota Manado Sulawesi Utara yang memiliki beranekaragam ekosistem pesisir yang lengkap yang salah satunya adalah hutan mangrove. Potensi  hutan  mangrove yang terdapat  di sepanjang  pesisir pantai Meras wilayah Taman Nasional Bunaken bagian utara yang masih menyimpan hutan mangrove, memiliki peran penting baik itu dari segi ekologi maupun ekonomi yang merupakan salah satu aset yang penting untuk  dijaga dan dilestarikan. Penelitian ini bertujuan untuk mengetahui bagaimana struktur komunitas mangrove dan berapa luasan mangrove yang tersisa saat ini. Penelitian ini dilaksanakan pada tanggal 29 Mei 2021, dilakukan di kawasan mangrove Pantai Meras, Kecamatan Bunaken, Kota Manado, Sulawesi Utara. Metode yang di gunakan yaitu metode kuadrat (quadrat methods) untuk mengetahui struktur komunitas mangrove. Berdasarkan hasil dari ke-3 zona menunjukkan  bahwa kerapatan jenis tertinggi dimiliki oleh Sonneratia alba dengan nilai 900 pohon/ha dengan kerapatan relatif jenis 61,4%, sedangkan kerapatan spesies terendah yaitu spesies Rhizophora mucronata (33 ind/ha) dengan nilai kerapatan relatif spesies yaitu 2,3%. Selanjutnya frekuensi tertinggi terdapat pada spesies Sonneratia alba dan Avicenia marina  dengan nilai frekuensi relatif yang sama sebesar 38%. Sedangkan  spesies yang memiliki nilai dominasi paling tinggi Nypa fruticant yaitu dengan nilai dominasi relatif 39,9% dan spesies yang yang memiliki nilai paling rendah Bruguiera gymnorhiza yaitu dengan nilai dominasi relatif 4,6%. Hasil perhitungan luas mangrove di pantai Meras 53,9 hektar.Kata kunci: Pantai Meras, Mangrove, Struktur Komunitas
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.
Status of Seagrass Beds in the Waters around Bahowo, Tongkaina Village, Manado City North Sulawesi Province Togolo, Festy; Menajang, Febry S. I; Manginsela, Fransine B; Kondoy, Khristin I. F; Lasabuda, Ridwan; Schaduw, Joshian N
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.v11i1.41816

Abstract

This research was conducted in November 2021 in the waters around Bahowo, Tongkaina Village, Manado City, North Sulawesi Province. Seagrass sampling was carried out using a random sampling method (randomly) with a quadratic transect drawn perpendicular to the shoreline. Thus, 6 species of seagrass were obtained, namely Enhalus acoroides, Halophila ovalis, Thalassodendron ciliatum, Thalassia hemprichii, Syringodium isoetifolium and Halodule pinifolia, with various aquatic environmental conditions. The results of the analysis of the status of the seagrass beds obtained that the seagrass cover value was 50.20% which was included in the "moderate" category, while the seagrass cover per species was Thalassia hemprichii species with the highest cover found was 30.08%, Enhalus acoroides was 21.49% , Halophila ovalis was 6.84%, Thalassodendron ciliatum was 17.39%, Syringodium isoetifolium was 12.31% and Halodule pinifolia was the least common type was 2.35%. The density value of Enhalus acoroides seagrass is 48.375 ind/m2, Halophila ovalis is 14.5 ind/m2, Thalassodendron ciliatum is 35,475 ind/m2, Thalassia hemprichii species with the highest density is 67.25 ind/m2, Syringodium isoetifolium is 27.875 ind/m2 and Halodule pinifolia species density is at least 5.25 ind/m2. The status of the seagrass beds was categorized as "unhealthy" with an average seagrass cover value of 50.20%.Keywords: Seagrass Status, Cover, Seagrass, Bahowo ABSTRAKPenelitian ini dilaksanakan pada bulan November 2021 di Perairan Sekitar Bahowo, Kelurahan Tongkaina, Kota Manado, Provinsi Sulawesi Utara. Pengambilan sampel lamun dilakukan menggunakan metode random sampling (secara acak) dengan transek kuadrat yang ditarik tegak lurus garis pantai. sehingga diperoleh 6 jenis lamun yaitu Enhalus acoroides, Halophila ovalis, Thalassodendron ciliatum, Thalassia hemprichii, Syringodium isoetifolium dan Halodule pinifolia, dengan kondisi lingkungan perairan yang beragam. Hasil dari analisis status padang lamun diperoleh nilai tutupan lamun adalah 50,20% termasuk ke dalam kategori “sedang”, sedangkan tutupan lamun per jenis yaitu Thalassia hemprichii jenis dengan tutupan yang tertinggi dijumpai adalah 30,08%, Enhalus acoroides adalah 21,49%, Halophila ovalis adalah 6,84%, Thalassodendron ciliatum adalah 17,39%, Syringodium isoetifolium adalah 12,31% dan Halodule pinifolia jenis yang paling sedikit ditemukan adalah 2,35%. Nilai kerapatan lamun Enhalus acoroides adalah 48,375 ind/m2, Halophila ovalis adalah 14,5 ind/m2, Thalassodendron ciliatum adalah 35,475 ind/m2, Thalassia hemprichii jenis kerapatannya paling tinggi adalah 67,25 ind/m2, Syringodium isoetifolium adalah 27,875 ind/m2 dan Halodule pinifolia jenis kerapatannya paling sedikit adalah 5,25 ind/m2. Status padang lamun dikategorikan dalam kondisi “kurang sehat” dengan nilai rata-rata penutupan lamun adalah 50,20%.  Kata kunci: Status Padang Lamun, Tutupan, Lamun, Bahowo
Identification Of Marine Debris By Focusing The Study Of Clean Coast Index On Karang Ria Tuminting Beach Poluan, Tirza I. A.; Sangari, Joudy R. R.; Tilaar, Ferdinand Frans; Lumingas, Lawrence J. L.; Pelle, Wilmy E.; Lasabuda, Ridwan
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.v11i1.44018

Abstract

Marine debris is rapidly gaining worldwide recognition as a major anthropogenic threat to global ocean ecosystems and produces a wide range of negative environmental, economic, safety, health and cultural impacts (UNEP, 2009). East Asia is the region with the fastest growing waste production in the world. Indonesia is in second position after China which produces the most waste in the world (Jambeck et al, 2015). The Beach Hygiene Index is a scaled index in a “Clean Coast” program launched by the Israeli ministry in an effort to solve the problem of littering on Israel's beaches. This index can be used as an indicator of pollution in a marine tourism area. The purpose of this study was to identify types of marine debris in the coastal waters of Karang Ria Tuminting and determine the value of the Clean Coast Index as an indicator of pollution. The collected data was then processed and statistically analyzed using Excel, Orange and SPSS software. Sampling was done by adapting the Shoreline Survey Methodology. approximately 1 month and made 2 direct observations, the plastic and rubber waste categories were found as the most common categories with the first observation being 73.4% and the second observation being 10.1%. The activities of the surrounding community are the main factors causing the abundance of marine debris around the coastal areas. The index value obtained is 39.5 with a total of 395 waste in various categories as stated by NOAA (2016). Keywords: Marine debris, Index, Identification, Category ABSTRAK Sampah laut dengan cepat mendapatkan pengakuan dunia sebagai ancaman antropogenik utama bagi ekosistem lautan global dan menghasilkan berbagai macam dampak negatif lingkungan, ekonomi, keselamatan, kesehatan, dan budaya (UNEP, 2009). Asia Timur adalah wilayah dengan pertumbuhan produksi sampah tercepat di dunia. Indonesia berada pada posisi kedua setelah China yang memproduksi sampah terbanyak di dunia (Jambeck et al, 2015). Indeks Kebersihan Pantai adalah skala indeks dalam suatu program “Clean Coast” yang diluncurkan kementerian Israel dalam upaya untuk memecahkan permasalahan sampah di pantai-pantai Israel. Indeks ini dapat digunakan sebagai indikator polusi pada suatu kawasan wisata bahari. Tujuan penelitian ini untuk mengidentifikasi jenis sampah laut di perairan pantai Karang Ria Tuminting dan menentukan nilai Indeks Kebersihan Pantai (Clean Coast Index) sebagai indikator polusi. Data yang dikumpulkan kemudian diolah dan dianalisis secara statistik dengan menggunakan perangkat lunak Excel, Orange dan SPSS. Pengambilan sampel dilakukan dengan mengadaptasi metode Shoreline Survey Methodology. Pengamatan dilaksanakan kurang lebih 1 bulan dan dilakukan 2 kali pengamatan langsung, diperoleh kategori sampah plastik dan karet sebagai kategori yang paling banyak ditemukan dengan komposisi jumlah pada pengamatan pertama sebesar 73.4% dan pengamatan kedua sebanyak 10.1%. aktivitas masyarakat sekitar menjadi faktor utama penyebab berlimpahnya sampah laut di sekitar wilayah pesisir. Nilai indeks yang diperoleh yaitu sebanyak 39,5 dengan jumlah total 395 sampah dengan berbagai kategori sesuai dengan yang dikemukakan oleh NOAA (2016). Kata kunci : Sampah laut, Indeks, Identifikasi, Kategori
Diversity and Abundance of Echinoderms in Pancuran Beach, Lembeh Island Christianti, Yudith; Boneka, Farnis; Kaligis, Erly; Wagey, Billy Th.; Sinjal, Chatrien A. L.; Lasabuda, Ridwan
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.v11i2.47753

Abstract

Echinodermata are found quite commonly in the tidal areas of Lembeh Island but their diversity and abundance have not been well documented. The purpose of this study was to determine the types of Echinoderms and their abundance at Pancuran Beach, Lembeh Island, Bitung City. Samples were taken at two stations using the Lincoln-Smith Transect method 2 x 50 m which was stretched perpendicular to the beach with three replications. Samples were identified in situ and the number of individuals of each species was noted. The results showed that in Pancuran Beach there were 18 species of phylum Echinodermata; with details of 7 species from the Asteroidea class, 5 species of Echinoidea, 4 species of Ophiuroidea, 2 species of Holothuroidea. The results of the analysis using the diversity index show that the diversity of Echinodermata at both stations is in the medium category, characterized by the value of H' = 2.06 for station I and H'= 2.35 for station II.  At station 1, the type of Ophiocoma erinaceus has the highest density of 15 ind/100m2 and a relative abundance of 23.68%. At station II Echinothrix diadema has the highest abundance of 12 ind/100m2 with a relative abundance of 17.14%. Common species found in both stations are Diadema setosum, Echinometra mathaei, Echinothrix diadema, Holothuria atra, Ophiocoma erinaceus, and Ophiocoma scolopendrina. Keywords: Lembeh Island, Diversity, Abundance, Echinoderms Abstrak Echinodermata ditemukan cukup umum di daerah pasang surut Pulau Lembeh namun keanekaragaman dan kelimpahannya belum sepenuhnya didokumentasikan dengan baik. Tujuan penelitian ini adalah untuk mengetahui jenis-jenis Echinodermata dan kelimpahannya di Pantai Pancuran, Pulau Lembeh Kota Bitung. Sampel diambil pada dua stasiun dengan menggunakan metode Lincoln-Smith Transect 2 x 50 m yang dibentangkan tegak lurus ke arah pantai dengan tiga replikasi. Sampel diidentifikasi secara insitu dan jumlah individu tiap spesies dicatat. Hasil menunjukkan bahwa di Pantai Pancuran terdapat 18 spesies filum Echinodermata; dengan rincian 7 spesies dari kelas Asteroidea, 5 spesies Echinoidea, 4 spesies Ophiuroidea, 2 spesies Holothuroidea. Hasil analisa menggunakan indeks keanekaragaman menunjukkan bahwa diversitas Echinodermata pada kedua stasiun dalam kategori sedang, ditandai dengan nilai H' = 2,06 untuk stasiun I dan H'= 2,35 untuk stasiun II.  Pada stasiun 1, jenis Ophiocoma erinaceus paling tinggi densitasnya yakni 15 ind/100m2 dan kelimpahan relatif 23,68%, Pada stasiun II Echinothrix diadema memiliki kelimpahan tertinggi yakni 12 ind/100m2 dengan kelimpahan relatif 17,14%. Jenis yang umum terdapat pada kedua stasiun adalah Diadema setosum, Echinometra mathaei, Echinothrix diadema, Holothuria atra, Ophiocoma erinaceus, dan Ophiocoma scolopendrina. Kata kunci: Pulau Lembeh, Keanekaragaman, Kelimpahan, Echinodermata.
Co-Authors Adnan S. Wantasen Adnan Wantasen Aldy Adrianus Tatali Alex D. Kambey Anneke V. Lohoo Anneke V. Lohoo Aprianto Rudjubik Bet E. S. Lagarense Billy Th. Wagey Billy Theodorus Wagey Calvin Sondak Calvyn F. A. Sondak, Calvyn F. A. Chatrien A.L. Sinjal Christianti, Yudith Darmono, Oktaviano P. Darus S. Paransa Darwasito, Suria Deiske Adeliene Sumilat, Deiske Adeliene dumas, Davis Wijaksana Extrada Efraim Bulele Erly Kaligis Erly Y. Kaligis Farnis B. Boneka Farnis Boneka Ferdinand F. Tilaar Ferdinand Frans Tilaar Fransine B. Manginsela Frian Patra Gaspar Manu Grevo S Gerung Hadath, Deandra Starsha Bianca Hariyano Hasantua Hengky J Sinjal Indri Manembu Jans Lalita Jardie A Andaki Joshian N.W. Schaduw Joudy R.R. Sangari, Joudy R.R. Kandati, Feibe R. S. Khristin I. F. Kondoy, Khristin I. F. Kondoy, Khristin I. F Lawrence J. L. Lumingas Lawrence J. L. Lumingas Luasunaung, Alfrets Maartianus S. Baroleh Makapedua, Daisy M. Manginsela, Fransine B Mantiri, Rose O.S.E Menajang, Febry S. I Moh. Ikhsan Z. Runtukahu Muhammad Yusran Boynauw Nahrawai Djalal Pelle, Wilmy E. Poluan, Tirza I. A. Rangan, Jety Kornela Rene Charles Kepel, Rene Charles Rignolda Djamaluddin Rose O. S. E Mantiri Rose O. S. E. Mantiri Rustandi, Yogi Salaki, Meiske Sofie Salim, Muslim Hi Sangari, Joudy R. R. Sinjal, Chatrien A. L. Situmorang, Ezra Monika Sonny Tasidjawa Stephanus V Mandagi Tamsir, Chika Litawaty Togolo, Festy Unstain N. W. J. Rembet Yudith A. Christianti