JURNAL PESISIR DAN LAUT TROPIS
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KONDISI TERUMBU KARANG PADA KAWASAN WISATA PANTAI MALALAYANG KOTA MANADO PROVINSI SULAWESI UTARA DENGAN MENGGUNAKAN METODE UNDERWATER PHOTO TRANSECT
Get PDFCoral reefs are coastal ecosystems with the highest level of diversity with around one million species worldwide. Corals are invertebrates belonging to the Phylum Coelenterate (hollow animals) or Cnidaria. The Underwater Photo Transect (UPT) method is a method that utilizes technological developments, both digital camera technology and computer software technology. Capturing data in the field in the form of underwater photos carried out by shooting using a Canon G-16 camera equipped with a waterproof protector (housing). In this study it can be seen that the percentage of hard corals at point 1 is in the medium category, point 2 is in the medium category, and point 3 is in the bad category with the percentage of hard coral cover as follows: point 1 (one) 29.75%, point 2 (two) 31.16%, and point 3 (three) 24.26%, of the three points can represent the overall condition of the coral reefs in Malalayang Beach which is in moderate condition with a percentage of 28.39%.Keywords: Malalayang Beach, Coral Reef, UPT, CPC
BAKTERI RESISTEN MERKURI PADA ALGA COKLAT Padina australis DARI PERAIRAN KIMA BAJO SULAWESI UTARA
Get PDFAlga laut jenis Padina australis merupakan spesies alga coklat divisi Phaeophyta (alga cokelat) yang umumnya tersebar di perairan laut. Spesies ini mampu bertahan hidup di perairan yang mempunyai kualitas air rendah. Tujuan penelitian ini adalah untuk mengisolasi bakteri resisten merkuri pada alga P. australis, mengetahui bentuk sel dan karakteristik bakteri. Metode yang digunakan adalah isolasi bakteri secara konvensional dan diuji pada senyawa merkuri klorida (HgCl2.) Hasil uji morfologi bakteri dari alga P. australis adalah Gram positif berbentuk monobasil dan streptobasil serta mempunyai kemampuan resisten terhadap merkuri pada konsentrasi 250, 500 dan 1000 ppm. Uji antibiotik dari bakteri resisten merkuri tersebut dilakukan terhadap antibiotik amoxicillin, cefixime dan doxycycline. Hasil menunjukan bahwa antibiotik amoxicillin mempunyai zona hambat 0,4 mm, antibiotik cefixime dengan zona hambat 0,1 mm. dan doxycycline mempunyai zona hambat tertinggi yaitu 1,8 mm, terlihat bahwa bakteri dapat mengurangi efektifitas suatu obat. Kata Kunci : Alga coklat, bakteri Gram positif, bakteri resisten merkuri, antibioti
NEMATOSIT KARANG Montipora undata (SCLERACTINIA) DARI PANTAI MALALAYANG TELUK MANADO
Get PDFThe aim of this study was to know the nematocysts composition of Montipora undata (Scleractinia) which was collected in the Malalayang coastal coral reef, Manado Bay. This research was conducted for three months, from October to December 2020. Observation of nematocysts was done under an Olympus CX41 microscope with a magnification of x100 objective lens connected to a computer equipped with the application of Optica view 7 at the Laboratory of Fish Health, Environment and Toxicology, Faculty of Fisheries and Marine Sciences, UNSRAT. The results showed that M. undata had the main nematocyst composition, namely microbasic b-mastigophore (MbM) of 60.0 %, small microbasic p-mastigophore type II (sMpM-II) 26.67 %, small holotrichous isorhiza (sHI) 6 ,67 %, large holotrichous isorhiza (lHI) 4.44 %, and large microbasic p-mastigophore type II (lMpM-II) 2.22 %. MbM is the dominant type of nematocyst for this coral species. Further studies are suggested to investigate the function of MbM and morphology of nematocysts of various types of corals in the genus Montipora.Keywords: Composition, Manado Bay, Montipora undata, nematocyst, Scleractini
KEANEKARAGAMAN DAN KELIMPAHAN FILUM ECHINODERMATA PADA ZONA INTERTIDAL MOLAS KECAMATAN BUNAKEN KOTA MANADO
Get PDFEchinoderms are one of the main components of marine biodiversity that play an important role in ecosystem function. The purpose of this study to determine the diversity, abudance,dominance, frequency and important value index of the phylum Echinoderm.The method use in this research was cruising method and the quadratic transect method. The results of this study on intertidal zone of Molas obtained as a whole includes four classes, namely Asteroidea, Echinoidea, Ophiuroidea and Holothuroidea with a total of 12 species. Based on data analysis used the quadratic transect method, it was obtained: at station I H' = 1.666, the highest species abundance index is Protoreaster nodosus at 1.133 ind/m2 and relative at 40.48%, C = 0.245 and the highest relative dominance of P. nodusus was 66.90%, the highest species frequency index is P. nodusus of 0.467 and a relative of 33.33% and the highest important value index is P. nodusus of 140.71% while at station II it is obtained H' = 1,384, The highest species abundance index is Diadema setosum at 3.067 ind/m2 and relative 55.42%, C = 0.359 and the highest relative dominance is D. setosum at 85.63%, the highest species frequency index is P. nodusus at 0.4 and relative at 27. 27% and the highest important value index of D. setosum was 159.23%.Keywords: Echinoderms, Diversity, Abundance, Dominance, Frequency, Important Value Inde
MODIFIKASI SISTEM PENGELOLAAN KAWASAN MANGROVE DAN AREA ARTIFICIAL CORAL SEBAGAI LABORATORIUM ALAM DI KAMPUS EKOWISATA LAUT TATELI
Get PDFThe research, which was conducted in the Coral and Mangrove Modulation Area, Tateli Campus, Manado State Polytechnic, from January to October 2020, aimed to obtain data on the growth of mangroves in the Coral & Mangrove Modulation Area of the Tateli Campus. nature and research place for lecturers. Collecting data using a mangrove modulation area of 20 m2 and divided into four quadrants measuring 10 m2. Observations and data collection in this study included measurements of trees, saplings, seedling height, seedling leaves, and seedlings branches. As for Coral Reefs using the observation method. Observation is conducting direct observations in the field to dive and take pictures and measure the growth of corals in that location. Observations were made every month, by measuring the length of the transplanted coral using a ruler to determine coral growth. Furthermore, coral length growth data were analyzed using Microsoft Excel. From this research, it can be concluded that the existing mangrove areas and artificial coral areas are identified as very suitable to be used as natural laboratories for learning and research at the Tateli Marine Ecotourism Campus. There were several individual mangroves whose growth was observed, which was seen from the height, number of leaves and mangrove branches. Ecological and oceanographic conditions of mangrove ecosystems are temperature, salinity, pH, depth and brightness which are very good for the suitability of mangrove ecosystems and coral reefs as a natural laboratory because the measurement results show numbers that are still within the quality standard limits according to the Quality Standard of Minister of Environment Decree No. 51 of 2004.Keywords: mangrove ecosystem, coral reefs, ecological conditions, growth, natural laboratory, ecotourism Penelitian yang dilaksanakan di Area Modulasi Karang dan Mangrove Kampus Tateli Politeknik Negeri Manado, pada bulan Januari sampai Oktober tahun 2020 ini bertujuan mendapatkan data pertumbuhan mangrove yang berada di Area Modulasi Karang & Mangrove Kampus Tateli kemudian diatur dan dikembangkan untuk menjadi sarana pembelajaran mahasiswa atau sebagai laboratorium alam dan tempat penelitian bagi dosen. Pengambilan data dengan menggunakan luasan modulasi mangrove seluas 20 m2 dan dibagi menjadi empat kuadran berukuran 10 m2, Pengamatan dan pengumpulan data dalam penelitian ini meliputi pengukuran pohon, pancang, tinggi semai, daun semai, dan cabang semai. Sedangkan untuk Terumbu Karang menggunakan metode observasi. Observasi adalah mengadakan pengamatan secara langsung di lapangan untuk melakuakan penyelaman dan pengambilan gambar serta mengukur pertumbuhan karang yang ada di lokasi tersebut. Pengamatan dilakukan setiap bulan, dengan cara mengukur panjang karang yang ditransplantasi menggunakan mistar untuk mengetahui pertumbuhan karang. Selanjutnya data pertumbuhan panjang karang dianalisis menggunakan bantuan Microsoft Excel. Dari penelitian ini dapat disimpulkan bahwa daerah mangrove dan area artificial coral yang ada, teridentifikasi sangat layak untuk dijadikan laboratorium alam untuk pembelajaran dan penelitian di Kampus Ekowisata Laut Tateli. Ada beberapa individu mangrove yang di amati pertumbuhannya, yang dilihat dari tinggi, jumlah daun dan cabang mangrove. Kondisi ekologi dan oseanografi ekosistem mangrove adalah suhu, salinitas, pH, kedalaman dan kecerahan sangat baik untuk kesesuaian lahan ekosistem mangrove dan terumbu karang sebagai laboratorium alam karena hasil pengukuran menunjukkan angka yang masih masuk dalam batas baku mutu sesuai dengan Baku Mutu Kepmen LH No. 51 Tahun 2004. Kata kunci: Ekosistem mangrove, terumbu karang, kondisi ekologis, pertumbuhan, labarotorium alam, ekowisat
IDENTIFIKASI SAMPAH ANORGANIK PADA EKOSISTEM MANGROVE DI DESA LESAH KECAMATAN TAGULANDANG KABUPATEN SITARO
Get PDFBased on the material content, waste is grouped into two types, namely organic waste (waste derived from animal, plant and human parts) and inorganic waste (waste derived from materials such as metal, glass, styrofoam, plastic and rubber). Inorganic waste is one of the coastal pollution problems, yet information about inorganic waste in mangrove ecosystem was relatively low, especially at Lesah Village, Tagulandang Sub district, Sitaro Regency. This study aims to determine the distribution of inorganic waste by type and to analyze the characteristic of inorganic waste based on the amount of size and weight found. The method used in this research is the line transects method at 3 different stations. The results showed that the types of marine debris that found were plastic, rubber, metal, and glass waste and there were 2 characteristics, namely mega-debris and macro-debris. Of the various types of debris obtained, plastic is the most commonly found, 161 items/23.329m2 (69.099 Items/ha) with a total weight of 1357.75 gram/ha and a total size of 1938.93 cm/ha. Followed by rubber debris as many as 5 items/23.329m2 (2.146 items/ha) with a total weight of 159.309 gram/ha and a total size of 59.871 cm/ha. Then, glass debris as many as 4 items/23.329m2 (1.717 items/ha) with a total weight of 402,159 grams/ha a total size of 31.030 cm/ha. Whereas, metal debris is the lowest value found as many as 3 item/23.329m2 (1.288 items/ha) with a total weight of 67.622 gram/ha and a total size of 19.528 cm/ha.Keywords: Inorganic waste, Mangrove Ecosystem, Desa Lesa
KOMPOSISI NEMATOSIT KARANG FUNGIA, Cycloseris vaugani DARI TERUMBU KARANG PANTAI MALALAYANG, MANADO
Get PDFThe purpose of this study was to determine the composition of nematocysts in the body tissue of the coral fungia, C. vaugani.  The location for the collection of C. vaugani colonies was on the coral reefs of the Malalayang coastal area, Manado. This research was carried out in September - December 2020. The observation of nematocysts of C. vaugani was carried out using an Olympus CX41 microscope with a magnification of x100 objective lens which connected to a computer monitor equipped with an optical view 7 application at the Fish Health Environment and Toxicology Laboratory, Faculty of Fisheries and Marine Science, UNSRAT.  The present results showed that C. vaugani had a composition of nematocysts, namely type I microbasic p-mastigophore (MpM-I) of 40.00%, small type II microbasic p-mastigophore (sMpM-II) of 31.11%, small holotrichous isorhizas (sHI) of 24.44 %, large type II microbasic p-mastigophore (lMpM-II) of 2.22%, and large holotrichous isorhizas (IHI) of 2.22%.  sMpM-II is the most dominant nematocyst type of C. vaugani and this type of nematocyst is thought to be used by coral for aggression and killing prey or predator if there is disturbance from the surrounding aquatic environment where the coral lives.  Further research is recommended to study the types and morphology of nematocyst from various species of coral fungia, including C. vaugani to understand the differences in their types and dimension of the nematocyst. Keywords: Composition, Cycloseris vaugani, Fungia, Manado, nematosi
KAJIAN KONDISI KESEHATAN PADANG LAMUN DI PERAIRAN MOKUPA KECAMATAN TOMBARIRI KABUPATEN MINAHASA
Get PDFSeagrass ecosystems services in the coastal waters are included as primary producers, nutrient recycler, bottom stabilizers, sediment traps, and erosion barriers. Gleaning fisheries in seagrass bed in Mokupa waters could cause damage on seagrass, that can be marked by changes in seagrass cover. The purposes of this study were to identify the types of seagrasses and to determine the health condition of seagrass bed ecosystem in Mokupa waters. The research method used in this study is quadrat transect method. Data collection was carried out by laid three transects (100 m) with distance between each transect was 50 m. A square frame (50×50 cm2) which is divided into 4 squares is placed on the right side of the transect, with 10 m distance between frame. This study found four types of seagrasses, namely Enhalus acoroides, Thalassia hemprichii, Halodule pinifolia and Halophila ovalis. E. acoroides have the highest percentage cover (16.19%) followed byT. hemprichii (6.91%), H. pinifolia (4.50%) and H. ovalis (1.56%) respectively. Seagrass cover in the study area is considered medium (26-50%) while the health condition was poor (29.25%)
UJI AKTIVITAS ANTIOKSIDAN PADA ASTEROIDEA (Linckia laevigata) DARI PERAIRAN TONGKAINA KECAMATAN BUNAKEN KOTA MANADO
Get PDFIndonesia has abundant biological resources that produce many potential bioactive compounds that are useful for pharmaceuticals and other materials, one of which is antioxidants. Antioxidants are substances that can prevent or slow down cell damage caused by free radicals. This study aims to analyze how strong the antioxidant activity is in the body of asteroidea (Linckia laevigata) taken in Tongkaina waters, Bunaken District, Manado City. And this study found that the inhibition value of the ethanolic extract of Linckia laevigata had strong antioxidant activity where the extract increased and the concentration was 10 mg/L with an average value of 67,3 %, a concentration of 15 mg/LÂ of 67,8 %, a concentration of 20 mg/L of 68,8 % and the highest concentration of 25 mg/L getting an average value of 69 %. The increace in the percentage of inhibition and the ethanolic extract of Linckia laevigata, showed that the concentration of the extract contributed greatly to the ability of the extract to reduce free radicals. In this study, the DPPH test was carried out by observing the decrease in absorbance wavelength of 517 nm using UV-Vis spectrophotometer,where the decrease in absorbance value as a result and a decrease in color intensity. While vitamin C as a comparison has a greater yield and sample extract of Linckia laevigata which proves that the antioxidant content and the sample has a fairly stable result.Keywords: Bioaktif compounds, Linckia laevigata, Antioxidant, Vitamin
STRUKTUR KOMUNITAS MANGROVE DI PESISIR DESA TATENGESAN, KECAMATAN POSOMAEN, KABUPATEN MINAHASA TENGGARA
Get PDFThe purpose of this study was to examine the structure of the mangrove community on the coast of Tatengesan, Posomaen District, Southeast Minahasa Regency, North Sulawesi. The data collection of the mangrove community structure used the line transect quadratic method measuring 10 m x 10 m 5 times. The research implementation period is 6 (six) months in 2021, starting from the preparation of proposals, data analysis, examination of research results, and the implementation of thesis examinations. Based on the results of the study, found 3 types of mangroves, namely: Rhizophora apiculata, Rhizophora mucronata, and Bruguiera gymnorrhiza. The value of the highest species relative density was found on transect 2 with a value of 88.33% by R. mucronata. For the value of the highest relative frequency of species on transects 1,2 and 3 by R. mucronata, namely 8.3 cm/m. The highest relative species cover was R. mucronata with a value of 76.99% on transect 2. The highest important value index was found in R. mucronata, which was 220.88 on transect 2. The highest diversity index was found on transect 3 with a value of 0.85. The highest evenness index was found on transect 1 with a value of 0.99. For further research, it is necessary to conduct an inventory of mangrove species using the roaming method to find out all the species in the research location.Keywords: Mangrove, Tatengesan, Community, Diversity and Evennes