JURNAL PESISIR DAN LAUT TROPIS
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KONDISI KARANG SCLERACTINIA DI PERAIRAN BULUTUI KECAMATAN LIKUPANG BARAT KABUPATEN MINAHASA UTARA
Get PDFHard coral is one of the main components of this forming coral reef ecosystem. Bulutui waters have coral reef ecosystems that have a direct role as a source of livelihood for people around these waters. However, there are non-environmentally friendly human activities such as fishing using explosives or chemical solutions that cause coral reef damage. The aimed of this research was to find out the condition of hard coral’s percentage cover and to described the frequency of hard coral’s occurance therefore it’s could be representative data at this location. Coral data was collected by using PIT (Point Intercept Transect) method. The value of percentage cover of hard corals at Bulutui waters are 20.58% and the value is categorized damaged. The total frequency of hard coral’s occurance at station 1 are 66 and dominated by Coral Submassive (CS), at station 2 are 23 and dominated by Coral Massive (CM), at station 3 are 18 and dominated by Coral Foliose (CF) and then at station 4 are 140 and dominated by Coral Foliose (CF).Keywords: Percentage Cover, Scleractinia Coral, Bulutui Waters, PIT Methods
UJI AKTIVITAS ANTIBAKTERI DAN ANTI-UV DARI EKSTRAK ETIL ASETAT ISOLAT JAMUR AFBK 5c YANG BERSIMBION DENGAN ASCIDIA Sigilina sp. DARI PERAIRAN PULAU BANGKA
Get PDFBioactive compounds are toxic compounds produced by organisms for use in self-defense from a wide variety of predators residing in their environment. The aim of the study was to test antibacterial activity and prove the UV-preventing effectiveness of the AFBK 5c mushroom isolate ethyl acetate extract that is in conjunction with ascidia. This research was conducted for 1 month in two locations, namely for antibacterial testing conducted in the Laboratory of Molecular Biology and Marine Pharmaceuticals, FPIK and for anti-UV testing conducted at the Pharmaceutical Laboratory, FMIPA, UNSRAT. The results showed that; This type of fungus that has been extracted and used is a fungus with the isolate code AFBK 5c This mushroom is a fungus that is connected with sigilina sp type ascidia. The rough extract of ascidia symbiont mushrooms is obtained from the process of meseration using ethyl acetate, then antibacterial testing of S. aureus and E. coli test bacteria and showing results such as antibacterial activity with an average value in S. aureus 09.00 and E. coli 11.05 mm which shows that there is antibacterial activity of AFBK 5c fungus isolate against E. coli and S. aureus test bacteria so that it can be said that the symbiont fungus has the potential as an ingredient. manufacture of antibacterial drugs. Furthermore, anti-UV testing, and the results of testing anti-UV compounds using rough extracts of AFBK 5c fungus isolates can produce absorption in UV-B (λ 290-320 nm) and UV-A (λ 320-400 nm) so that it has the potential to be used as an anti-UV material.Keywords: Bioactive Compound, Ascidia, Meceration, Antibacterial, Anti-U
KARAKTERISTIK MORFOLOGI DAN AKTIVITAS ENZIM PROTEASE BAKTERI SIMBION NUDIBRANCH
Get PDFOne type of enzyme whose application is very widespread is protease enzymes. Microorganisms that have not been widely explored as a source of protease enzymes are bacteria that are in conjunction with Nudibranch. The study aims to identify the morphological characteristics of bacteria, then determine the hydrolysis ability of protease enzymes from bacteria symbiont Nudibranch. Identification of morphological characteristics is done macroscopic, and microscopic with gram staining. Proteolytic activity tests are performed qualitatively by measuring the proteolytic index of bacteria grown on Skim Milk Agar medium. The results of macroscopic identification of symbiotic bacteria with Nudibranch are dominated by irregular colony shapes, undulated edges, growth of the entire colony has a flat height, milky white colony color, buttery texture and opaque bacterial colonies. Based on microscopic identification, two gram-negative isolates are obtained, namely RL.S14, S1.1.1, and gram positive isolates, namely AK.S00, AK.S01, AK.S02, AK.S03, S.PP1, RL.S6, S2.1.5, S2.2.1, S3.3.1, S3.3.4, RL.S10. Nudibranch symbiont Bacterial has colony cells were dominated by the diplobacillus form. The results of the protease activity test of Nudibranch symbiont bacteria showed that 12 positive isolates had proteolytic activity with the highest proteolytic index produced by isolate AK.S00, which was 2.5 mm. Keywords: Nudibranch, symbiotic bacteria, characteristics, proteas
STRUKTUR KOMUNITAS DAN PERSENTASE TUTUPAN LAMUN DI MARINE FIELD STATION UNIVERSITAS SAM RATULANGI
Get PDFIn the world there are 60 species of seagrass, and 12 types are found in Indonesia. This study aims to determine the results of the description of the community structure and the percentage cover of seagrass in the waters of the Marine Fields Station, observations were made at 2 (ST.1 & ST.2) stations using themethod seagrass watch and the results of data analysis of the community structure using the equation formula from Cox, 1967. In the waters of the Marine Fields Station, there are 6 species, namely Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, Halodule pinifolia, and Halophile ovalis. The results of the percentage of seagrass cover at ST.1 were 58.85% and ST.2 53.13% and the average value obtained from these 2 stations was 55.99%. Overall, the community structure of ST.1 species Thalassia hemprichii has the highest important value index of 80.66%. And in ST.2 Syringodium isoetifolium which has the highest important value index is 93.27%. Parameters in the waters of Maine Field Station, namely pH, salinity, temperature, substrate are good. Keywords: Seagrass, Percentage Cover, Community StructureÂ
STRUKTUR KOMUNITAS MANGROVE GAMLAMO, KECAMATAN JAILOLO, HALMAHERA BARAT, PROVINSI MALUKU UTARA
Get PDFMangrove is one of coastal plants that have many benefits both to the environment and society. Mangroves can be found growalong the coast and influenced by tides. This research conducted in Gamlamo Village, Jailolo Sub-district, West Halmahera Regency, North Maluku Province. The purposes of this study were to determine the mangrove community structure and identify mangroves species in Gamlamo Village. The method used in this research was line transect method. There are 3 stations established onthis research area and each station has two line transects, so the total line transect are six. Moreover, within each line transect five quadrants (10 x 10 cm2) were laid. This study found that at three stations in the research area, there were three mangrove species Rhizophora mucronata, Sonneratia alba and Bruguiera gymnorrhiza. The highest density value was found at station 2 of R. mucronata 0,36 ind/m2 and the relative density value was 60%. The highest frequency was found at station 2, belong to R. mucronata 1 ind/m2 and the relative value was 41,67%. The highest dominance wasfound at station 1 of S. alba 52,89 m2 and dominance relative 53,31%. For the highest important value index was at station 2, of R. mucronata with a value of 136,57% and the found at station 3 B. gymnnorrhiza. The highest diversity index (H’) 1,03 was found at station 1 while the lowest 0,95 was at station 2.Keywords: Gamlamo Village, Mangrove, Community Structur
STRUKTUR KOMUNITAS IKAN FAMILY CHAETODONTIDAE SEBAGAI INDIKATOR KONDISI KESEHATAN LINGKUNGAN EKOSISTEM TERUMBU KARANG DI ZONA TRADISIONAL PULAU BUNAKEN TAMAN NASIONAL BUNAKEN
Get PDFThe presence of coral reef fishes, especially family Chaetodontidae is one of bioindicators to environment health condition of coral reef. Fish indicator research in Bunaken Island waters aims to find out the community structure, such as the composition, abundance, density, equality, diversity and dominance. Data collection was conducted at 5 (five) locations in the Bunaken Island Traditional Zone where there are 5 (five) observation points respectively, namely TP-1 Mandolin, TP-2 Alung Banua, TP-3 Sachiko, TP-4 Muka Kampung, and TP-5 Bunaken Timur. Data collection by underwater visual census (UVC) techniques using SCUBA. The results showed there were 23 species of indicator fish from family Chaetodontidae, total individuals number of each species in 5 research sites as many as 97 individuals. The highest fish density is 0.06 at TP-5 while the lowest value in TP-2 with density value 0.02. Through indicator fish community structure indicates that the coral reef quality conditions is stable indicated by diversity values (H') in all locations were moderate category and inversely proportional by low dominance values, high leveling values (E). The similarity rate (IS) of indicator fish species in all locations differs from each other indicating the condition of coral reefs in each location grows independently without being influenced by other locations.Keywords: Reef Fish, Coral Reef, Indicator Fish
KARAKTERISTIK GELOMBANG DI BEBERAPA KAWASAN PERAIRAN SEKITAR SEMENANJUNG MINAHASA
Get PDFThe waters surrounding the Minahasa Peninsula are important areas of various activities by use of coastal and marine space. This research aims, firstly to describe direction, period and height of waves at several water areas around the Minahasa Peninsula in various season. Secondly to analyze the characteristic of daily and seasonal waves. The wave parameter, which reanalysis by ECMWF for 5 years (September 2014 to august 2019) were used in this research.  By the analysis spasial-temporal, the results are presented by the rose grapich waves direction and stock chart. The wave propagation in the north season and transition season I, is dominated by the northeasterly wave. While the wave propagation in the southern season and the transitional season II, is more diverse directions. The characteristics of the waves formed in the southeast Minahasa waters in the north season and transitional season I, show that the wave period is greater than in the waters of Manado Bay and Bitung waters. Furthermore, the wave characteristics formed in the waters of the Minahasa Peninsula show a significant wave height in Bitung waters which is higher than the waters of Manado Bay and Southeast Minahasa waters.Keywords: Waves, ECMWF, Minahasa Peninsula Waters Perairan sekitar Semenanjung Minahasa merupakan kawasan penting dalam berbagai aktivitas pemanfaatan ruang pantai dan laut. Penelitian ini bertujuan, pertama untuk mendeskripsikan arah, periode, dan tinggi gelombang di beberapa kawasan perairan sekitar Semenanjung Minahasa dalam berbagai musim yang berlangsung. Kedua adalah menganalisis karakteristik gelombang harian dan musiman pada perairan sekitar Semenanjung Minahasa.  Data yang digunakan dalam penelitian adalah data reanalysis ECMWF (European Centre for Medium-Range Weather Forecasts) parameter gelombang selama 5 tahun mulai bulan September 2014 sampai Agustus 2019. Dengan metode analisis spasial-temporal hasilnya disajikan dalam bentuk grafik mawar arah datang gelombang dan grafik kotak (stock chart). Rambatan gelombang pada musim Utara dan musim Peralihan I, arah datangnya didominasi dari arah Timur Laut.  Sedangkan rambatan gelombang pada musim Selatan dan musim Peralihan II, arah datangnya lebih beragam. Karakteristik gelombang yang terbentuk di perairan Minahasa Tenggara pada musim Utara dan musim Peralihan I memperlihatkan periode gelombangnya lebih besar dari pada perairan Teluk Manado dan Perairan Bitung. Selanjutnya karakteristik gelombang yang terbentuk di perairan Semenanjung Minahasa memperlihatkan tinggi gelombang signifikan di perairan Bitung lebih tinggi dari pada perairan Teluk Manado dan perairan Minahasa Tenggara.Kata kunci: Gelombang, ECMWF, Perairan Semenanjung Minahas
AKTIVITAS SITOTOKSIK EKSTRAK KARANG LUNAK Xenia sp. DARI TELUK MANADO, PROVINSI SULAWESI UTARA
Get PDFBioactive compounds from the sea which are generally in the form of secondary metabolites have the potential to be developed as medicinal ingredients. Marine life can be used as an object of research and development, considering the many benefits that can be taken from the secondary metabolite compounds contained in it, especially compounds that have bioactivity. Soft corals are marine biota that have bioactivity, extracts from sost coral contain bioactive compounds that have cytotoxic, anti-tumor, anti-viral, anti-inflammatory, anti-fungal, anti-leukemic, and enzyme activity inhibitory properties. Some of the research results show that marine soft corals have a variety of structures and biological activities including antioxidant substances. Soft corals were extracted by maceration method and then evaporated. The cytotoxic activity of soft coral extract was tested using the BLSA method and then analyzed the data to find the concentration of mortality (LC50). The purpose of this study was to test the cytotoxic activity of soft coral Xenia sp. The results of this study were testing the cytotoxic activity of the sample Xenia sp., amounting to 20.89 ppm, and having strong toxic properties. Key words: BLSA, Soft coral Xenia sp., LC50, Cytotoxi
BIOINDEKS ZOOPLANKTON DI PERAIRAN PULAU BUNAKEN
Get PDFThe city of Manado has several islands which are strategic places with the development of marine potential. One that is so potential is the waters of Bunaken Island and the forms of activity in Bunaken Island waters vary widely. The purpose of this study is to determine the abundance value and biological index and to analyze the condition of the waters in the waters and to see the comparison at each research station. The results of zooplankton identification consisted of 7 genera including all research stations. The results of the analysis of the highest abundance data were at the third station (8.4822 ind / l) and the lowest abundance value was at the first station (7.4220 ind / l). The results of the biological index analysis obtained are as follows: the average diversity value at three stations is 1.08, the uniformity is 0.98 and the dominance is 0.20. The results of the Morisita index for each station are: stations. Which means the value of the distribution pattern is three groups, and the others are uniform in each research genus, the overall distribution is uniform.Keywords:Â Zooplankton, Bunaken Island waters, Abundance, Bioinde
MORFOMETRI GISIK KAWASAN PANTAI WISATA BAHARI SARIO KOTA MANADO
Get PDFBeach formation has an important role in protecting land from the action of the sea and it is useful for recreation, conservation and other uses. In “Wisata Bahari Sario†Kota Manado coastal area there is still a particular area of beach that is used for various purposes, so it is important to study its morphology. This research was conducted with the aim of describing morphology and analyzing oceanographic factors that affected the dynamic process of beach morphology. The results showed that the beach had an area of 422.69 m2, with the criteria for short slopes in the Northeast and long slopes in the Southwest. The shapes of the beach surface were in the form of gutters and shoots, their appearance was more visible towards the Southwest. In general, the deposition process took place more intensively in the Southwestern part of the beach. Keywords: Beach, Morphology, Slope, Depositio