JURNAL PESISIR DAN LAUT TROPIS
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KEKAYAAN JENIS VEGETASI MANGROVE DI PANTAI MINANGA, KECAMATAN BINTAUNA, KABUPATEN BOLAANG MONGONDOW UTARA, SULAWESI UTARA
Get PDFMangrove merupakan suatu tipe vegetasi yang khas terdapat di daerah pantai tropis dan umumnya tumbuh subur di daerah pantai dekat muara sungai dan pantai yang terlindung dan terlindung dari kekuatan ombak. Fungsi mangrove secara ekologis yaitu sebagai tempat pemijahan (spawing), pengasuhan (nursey) dan tempat mencari makanan (feeding) bagi biota tertentu. Penelitian ini bertujuan untuk dapat menganalisis kekayaan jenis vegetasi mangrove di Pantai Minanga, Kecamatan Bintauna, Kabupaten Mangondow Utara, Sulawesi Utara. Metode jelajah dilakukan di ekosistem mangrove dimulai dari batas daratan (teresterial) hingga ke muara. Sebanyak dua petak di bagian belakang yang berbatasan dengan teresterial, tiga petak di bagian tengah dan tiga petak di bagian depan yang berbatasan dengan muara. Sebanyak 18 jenis mangrove ditemukan di Pantai Minanga, Kecamatan Bintauna. Ancaman yang dapat menyebabkan penurunan populasi mangrove yaitu konversi lahan dan penebangan kayu mangrov
KERAGAMAN SUBSTRAT BAGI NUDIBRANCH DI SELAT LEMBEH
Get PDFResearch on the diversity of nudibranch substrates was carried out in Lembeh Strait at 3 locations, at Nudifall, Makawide, and Nudiritrit. The purpose of the researchs 1) to discover the nudibranch species at Nudifall, Makawide, Nudiritrit in the Lembeh Strait. 2) to knowing the substrate occupied by nudibranchs in the Lembeh Strait. 3) to knowing the overlapping substrate that was occupied by the nudibranch. Subtrates can to be used by nudibranches to get food sources, shelter from predators, and as a place to live. Nudibranch species found in the Lembeh Strait were 19 species in this study. Dead Coral with Algae (DCA), sponges, algae, hard coral, and tunicates were the types of substrate where nudibranches live in the Lembeh Strait The most dominant or overlapping substrate between types of nudibranchs was Dead Coral with Algae. Keywords : Nudibranch, Substrate, Lembeh Substrate diversity of nudibranch at Lembeh Strait           Penelitian mengenai keragaman substrat nudibranch dilakukan di Selat Lembeh pada 3 lokasi yaitu Nudifall, Makawide, dan Nudiritrit. Tujuannya yaitu 1) mengetahui jen nudibranch di Nudifall, Makawide, Nudiritrit di Selat Lembeh. 2) mengetahui substrat yang ditempati nudibranch di Selat Lembeh. 3) mengetahui substrat yang tumpang tindih (overlap) yang ditempati oleh nudibranch. Subtrat dapat dimanfaatkan oleh nudibranch untuk mendapatkan sumber makanan, tempat berlindung dari predator, dan sebagai tempat tinggal. Jenis nudibranch yang ditemukan di Selat Lembeh ada 19 spesies dalam penelitian ini. Dead Coral with Algae (DCA), spons, alga, hard coral, dan tunikata merupakan substrat-substrat tempat hidup nudibranch di Selat Lembeh. Substrat yang paling dominan atau tumpang tindih antar jenis dari nudibranch adalah DCA. Kata kunci : Nudibranch, Substrat, Lembeh
Struktur komunitas ekosistem mangrove dan kepiting bakau di Desa Lamanggo dan Desa Tope, Kecamatan Biaro, Kabupaten Kepulauan Siau, Tagulandang, Biaro
Get PDFTujuan dari penelitian yaitu untuk mengetahui struktur komunitas mangrove di Desa Lamanggo dan Desa Tope, untuk mengetahui kelimpahan kepiting bakau di hutan mangrove, dan untuk mengetahui hubungan antara kerapatan mangrove dengan kepadatan kepiting.Penelitian dilakukan dengan menggunakan metode line transek kuadran dengan menentukan lima lokasi titik pengamatan pengambilan sampel, dan untuk mengetahui kondisi mangrove maka dilakukan perhitungan kerapatan jenis, frekuensi jenis, penutupan jenis, dominasi, indeks nilai penting dan keanekaragaman serta analisis kelimpahan kepiting bakau yang berhubungan dengan kerapatan mangrove dengan rumus Y = a + b X.. Dari hasil penelitian yang dilakukan, diketahui bahwa jenis mangrove yang memiliki nilai kerapatan tertinggi yaitu Rhizophora apiculata, dan untuk nilai frekuensi tertinggi juga yaitu jenis Rhizophora apiculata, sedangkan untuk nilai dominasi tertinggi dimiliki oleh jenis Sonneratia alba.Berdasarkan uji korelasi antara kerapatan pohon mangrove (X) terhadap kepadatan kepiting (Y) sebagaimana terlihat diperoleh r sebesar = 0,814 dengan Fhitung sebesar 1.94 < Ftabel 10.12. Hal ini berarti tidak terdapat hubungan yang signifikan antara kerapatan mangrove dengan kepadatan kepiting bakau. Selanjutnya untuk melihat besarnya kontribusi kerapatan mangrove terhadap kepadatan kepiting dicari melalui koefisien determinasi R² = 0.66 yang berarti variabel kerapatan pohon mangrove tidak memberikan kontribusi terhadap kepadatan kepiting. Karena jika setiap penambahan variabel X, maka variabel Y akan berkurang sebesar 67.54937 - 0.110 X
Kajian Kesesuaian Lahan Ekowisata Mangrove Di Desa Arakan Kabupaten Minahasa Selatan Sulawesi Utara
Get PDFStudy Of Land Suitability For Mangrove Ecotourism In Arakan Village, Minahasa Selatan District, North Sulawesi The purpose of this study was to determine community structure, mangrove canopy cover and land suitability of mangrove ecotourism. This study used the line transect method for mangrove community structure, interviews for questionnaires and hemispherical photography for the percentage of mangrove cover. The results of the study on mangrove community structure showed that The highest important value index is found in transect 3, namely R. stylosa with value of 292,935 and the lowest on transect 3 is A. officinalis with a value of 7.065. For the suitability of mangrove ecotourism land shows that all transects belong to the suitable category with value of 55.74% on transect 1, 65.57% on transect 2, 68.85% on transect 3, 63.93% on transect 4 and 68.85% on transect 5.Keywords: Mangrove, Ecotourism, Arakan Village Tujuan dari penelitian ini adalah untuk mengetahui struktur komunitas, tutupan kanopi mangrove dan kesesuaian lahan ekowisata mangrove. Penelitian ini menggunakan metode line transek terhadap struktur komunitas mangrove, wawancara untuk kuisioner dan hemispherical photography untuk persentase tutupan mangrove. Hasil penelitian struktur komunitas mangrove yaitu indeks nilai penting tertinggi terdapat pada transek 3 jenis R.stylosa 292.935 dan terendah pada transek 3 jenis A.officinalis 7.065. Untuk kesesuaian lahan ekowisata mangrove bahwa pada semua transek masuk kategori sesuai dengan nilai kesesuaian transek 1 55.74%, transek 2 nilai 65.57%, transek 3 nilai 68.85%, transek 4 nilai 63.93% dan transek 5 nilai 68.85%.Kata kunci: Mangrove, Ekowisata, Desa Arakan
IKAN YANG BERUAYA DI DAERAH MANGROVE PANTAI TASIK RIA
Get PDFThis study is intended to find out the fish that are cultured into the mangrove area of Tasik Ria beach, Mokupa, Minahasa Regency. Fish is obtained through gill jarring at high tide. The fish that were identified were Archamia fucata, Lutjanus fulvus, Lutjanus eherenbergii, Lethrinus ornatus, Scolopsis lineate, Sargocentron diadema, Epinephelus merra and Scorpaenopsis oxycephala. The fish are generally carnivorous, and are nocturnal.Key words: Tasik Ria Beach, the fishes, carnivorous, mangrove
POTENSI ANTIBAKTERI BINTANG LAUT DARI PERAIRAN PANTAI KELURAHAN TONGKAINA MANADO
Get PDFStarfish is one of the species of the asteroidean class, and is grouped into phylum echinoderms. Echinoderms consist of approximately 6000 species and all live in sea water. Starfish is one source bioactive compounds. Active compounds from starfish have been known to have activities antioxidant, antibacterial, anti-inflammatory, antifungal and immunostimulatory, there are also blue starfish that are potential as antitumor and antibacterial agents. This study aims to obtain crude extracts from several types of starfish, and testing the antibacterial activity of crude starfish extracts against bacteria Streptococcus agalactiae, Escherichia coli and Staphylococcus aureus. Test the antibacterial activity of crude starfish extracs Protoreaster nodosus, Achaster tipycus, dan Linckia laevigata against bacteria E. coli, S. aureus, dan S. agalactiae use the agar diffusion method by means of a well. L. l extract can inhibit bacteria e. coli at an extract concentration of 1000 mg/ml with a diameter of inhibitory zone 11.0 mm, whereas at a concentration of 750 mg/ml the test bacteria can still grow on the bacteria S. agalactiae and S. aureus can still grow even though the extract has be given L. l Keywords: Potential Starfish, Antibacterial Activity, Staphylococcus aureus, Escherichia coli, and Streptococcus agalactiae Bintang laut merupakan salah satu spesies dari kelas Asteroidea, dan dikelompokkan kedalam filum Echinodermata. Filum Echinodermata terdiri atas kurang lebih 6000 spesies dan semuanya hidup di air laut. Bintang laut merupakan salah satu sumber penghasil senyawa bioaktif. Senyawa aktif dari bintang laut telah diketahui memiliki aktivitas antioksidan, antibakteri, antiinflamasi, antifungi dan imunostimulator, ada juga bintang laut biru yang potensial sebagai antitumor dan agen antibakteri. Penelitian ini bertujuan untuk mendapatkan ekstrak kasar dari beberapa jenis bintang laut, dan menguji aktivitas antibakteri ekstrak kasar bintang laut terhadap bakteri Streptococcus agalactiae, Escherichia coli dan Staphylococcus aureus. Uji aktivitas antibakteri dari ekstrak kasar bintang laut Protoreaster nodosus, Achaster tipycus, dan Linckia laevigata terhadap bakteri E. coli, S. aureus, dan S. agalactiae mengggunakan metode difusi agar dengan cara sumur. Ekstrak L. l mampu menghambat bakteri E.coli pada konsentrasi ekstrak 1.000 mg/ml dengan diameter zona hambat 11.0 mm, sedangkan pada konsentrasi 750 mg/ml bakteri uji masih bisa bertumbuh pada bakteri S. agalactiae dan S. aureus masih dapat bertumbuh walaupun telah diberikan ekstrak L. l.Kata Kunci : Potensi Bintang Laut, Aktivitas Antibakteri, Streptococcus agalactiae, Escherichia coli and Staphylococcus aureu
DIMENSI DAN KOMPOSISI NEMATOSIT PADA KARANG SCLERACTINIA, Acropora florida DAN Acropora divaricata DI PANTAI MOTANDOI SELATAN KABUPATEN BOLAANG MONGONDOW SELATAN
Get PDFThe purpose of this study was to determine the type, dimensions and composition of nematocytes in Scleractinia, Acropora florida and Acropora divaricata. This research was conducted in South Motandoi Beach, East Pinolosian District, South Bolaang Mongondow Regency, North Sulawesi for five (5) months; from February to June 2019. The method of this research was observation using student-t statistical data analysis. Microbasic p-Mastigophore type-II (MpM-II) and Holotricous isorhiza (HI), while A. divaricata only has type-II Microbasic p-Mastigophore (MpM-II) nematocytes. The nematocytes dimension showed an average capsule length of MpM II in A. florida of was 262.32 µm and A. divaricata was 125.15 µm, mean capsule width of MPM II in A. florida was 67.01 µm and A. divaricata was 31.95 µm, and the average length of mpM II on A. florida was 154.44 µm, and A. divaricata was 70.97 µm. Nematocytes composition showed that MPM II in A. florida was 95.56% and HI was 4.44%, while the composition of MPM II nematocytes in A. divaricata was 100% and HI was 0%. Student t-test showed that the ratio of 2 average values of capsule length, capsule width, and MPM II stem length from two populations of A. florida and A. divaricata were not significantly different (P> 0.05).  It can be concluded that both types of A. florida and A. divaricata corals have different types and composition of nematocytes however their size dimensions are not significantly different. Further studies are important to examine genetic and environmental factors to find out how much the kinship relationship between the two types of those coral.Keywords: Acropora florida, Acropora divaricata, HI, Scleractinia coral, MpM II, nematocyte
AKTIVITAS ANTIBAKTERI DAN ANTI-UV BEBERAPA ASCIDIAN DARI PERAIRAN PANGALISANG BUNAKEN
Get PDFAscidians are sesile marine invertebrates that have bioactive compounds such as antibacterial and anti-UV. The purpose of this study is to determine the antibacterial activity against Escherichia coli and Staphylococcus aureus bacteria and to test the anti-UV activity of the ascidian water fraction. Antibacterial activity test was carried out using the diffusion method (disc diffusion Kirby & Bauer) and the water fraction of ascidian that showing antibacterial activity tested in a UV spectrophotometer to see the anti-UV activity. Results of the study were obtained 4 types of ascidians extracted from partitioned into water fraction, n-hexane fraction, methanol fraction. All three fractions were tested for antibacterial activity and the result showed that there were antibacterial activities of ascidian extract Clavelina sp. against both test bacteria with inhibition of S. aureus and E. coli with strong categories. Ascidian Phlebobranch sp. showed the presence of antibacterial activity with inhibition of S. aureus and E. coli with very strong categories (16,6 mm). extract Eudistoma sp. showed the presence of antibacterial activity with inhibition S. aureus and E. coli in the medium category (9 mm). The water fraction found active in antibacterial testing is then tested using a UV spectrophotometer for anti UV testing, the result show that water fraction of the four ascidians can absorb UV-B (290-320nm) and UV-A ( 320-400nm).Keywords : Ascidian, Antibacterial, Partition, Anti- UV
INVENTARISASI JENIS DEKAPODA DI PERAIRAN PANTAI KELURAHAN TONGKAINA, KOTA MANADO
Get PDFDecapod is one of the subphylum of Arthropod which is the most dominant animal group in the waters. Various types of decapoda commonly known such as crabs, shrimp, and crabs. This research was conducted with the aim of determining the type of decapod in coastal waters of Tongkaina Village, Manado City, determining the abundance of decapods in these waters and measuring data on water quality (temperature, salinity, pH) at several observation stations. The results of the study obtained the type of decapod in the coastal waters of Tongkaina Village, Manado City. A total of 15 species were distributed in 9 different families namely Ocypodidae, Grapsidae, Portunidae, Sesarmidae, Pilumnidae, Xanthidae, Calappidae, Majidae, and Penaeidae. Of the types of crabs and shrimp found in each type of living habitat. the highest numbers were 97 individual indicated Uca lacteal, then followed by Thalamita crenata with 32 individuals, and the lowest was Penaeus kerathuruswith 2 individuals Keywords: Tongkaina, Decapoda, identification, abundance Inventory Decapoda in The Marine Waters of Tongkaina Village, Manado CityDekapoda merupakan salah satu subfilum dari Arthropoda yang merupakan kelompok hewan paling dominan di perairan. Berbagai jenis decapoda yang umum dikenal seperti kepiting, udang, dan rajungan.. Penelitian ini berujuan menentukan jenis dekapoda di perairan pantai Kelurahan Tongkaian, Kota Manado, menentukan kelimpahan dekapoda yang ada di perairan tersebut dan mengukur data tentang kualitas air (suhu, salinitas, pH) pada beberapa stasiun pengamatan. Hasil penelitian yang didapatkan jenis dekapoda di perairan pantai Kelurahan Tongkaina, Kota Manado. Sebanyak 15 spesies yang terdistribusi pada 9 famili berbeda yaitu Ocypodidae, Grapsidae, Portunidae, Sesarmidae, Pilumnidae, Xanthidae, Calappidae, Majidae, dan Penaeidae. Dari jenis kepiting dan udang yang ditemukan pada masing-masing tipe habitat hidup. spesies tertinggi yaitu 97 ditunjukkan Uca lacteal, kemudian diikuti oleh Thalamita crenata dengan 32 individu, dan spesies yang paling terendah yaitu Penaeus kerathurus dengan 2 jumlah individu.Kata kunci : Tongkaina, Dekapoda, identifikasi, kelimpaha
IDENTIFIKASI SAMPAH LAUT DI PANTAI TONGKAINA DAN TALAWAAN BAJO
Get PDFMarine debris is all material in the solids form that could not be found naturally (is a product of human activities) in the territorial waters (oceans, beaches) and could threat directly to the conditions and productivity of the territorial waters. Marine debris is defined by UNEP (2009) as solid material that is difficult to decompose, plant or processed results are discarded or left in marine and coastal environments. Marine debris consists of goods used by humans and deliberately disposed to the sea. Marine debris can be transported with ocean currents and winds from one place to another, even being able to travel long distances from the source. Common waste problems encountered in urban areas in Southeast Asian countries, as populations grew, followed by increased revenues potential garbage and various types of garbage produced. Marine debris classified as Meso and Macro trash with size > 5 mm to 1 m. Marine debris observation is carried out by modifying the method of coastline survey methods based on National Oceanic and Atmospheric Administration (2013). There are some important things to be prepared before doing the observation that was stranded in coastal areas such as the selection of observation locations, materials needed for observation and time observation. Based on the results of the research of marine debris samples obtained at the research site there are 2 characteristics of marine debris namely of macro flakes collected in twelve transect as much as 341 grains, while meso-debris contains as many as 94 goods. Also the debris with a category of micro-debris as many as 46 items with a total of 481 items and total weight total 1433.38 gr/m2.Keywords: Marine debris, Tongkaina, Talawaan Bajo Sampah laut atau marine debris adalah semua material berbentuk padatan yang tidak dijumpai secara alami (merupakan produk kegiatan manusia) di wilayah perairan (lautan, pantai) dan dapat memberikan ancaman secara langsung terhadap kondisi dan produktivitas wilayah perairan. Sampah laut, didefiniskan oleh UNEP (2009) sebagai bahan padat yang sulit terurai, hasil pabrik atau olahan yang dibuang atau dibiarkan di lingkungan laut dan pesisir. Sampah lautan dapat ditransport oleh arus laut dan angin dari satu tempat ke tempat lainnya, bahkan dapat menempuh jarak yang sangat jauh dari sumbernya. Permasalahan sampah umum dihadapi pada daerah perkotaan di negara Asia Tenggara, seiring meningkatnya jumlah penduduk, diikuti peningkatan pendapatan, sehingga mengakibatkan meningkatnya potensi timbulan sampah perkapita dan beragamnya jenis sampah yang dihasilkan (Nguyen & Schnitzer, 2009). Sampah laut ditelaah adalah yang tergolong sampah meso dan makro dengan ukuran > 5 mm sampai 1 m. Pengamatan sampah dilakukan dengan modifikasi metode shoreline survey methodology berdasarkan National Oceanic and Atmospheric Administration NOAA (2013). Ada beberapa hal yang penting untuk disiapkan sebelum melakukan pengamatan sampah yang terdampar di daerah pantai seperti pemilihan lokasi pengamatan, bahan yang di perlukan untuk pengamatan dan waktu pengamatan. Berdasarkan Hasil Penelitian sampel sampah laut yang diperoleh di lokasi penelitian terdapat 2 karakteristik sampah laut yaitu makro-debris yang dikumpulkan pada dua belas transek sebanyak 341 item, sedangkan meso-debris terdapat sebanyak 94 item, serta ditemukan juga sampah dengan kategori mikro-debris sebanyak 46 item dengan total keseluruhan 481 item dan berat total keseluruhan 1433,38 gr/m2. Kata Kunci: Sampah laut, Tongkaina, Talawaan Baj