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Journal : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

PROFIL PARAMETER KIMIA OSEANOGRAFI PANTAI TIMUR SUMATERA Fadli, Fani; Samiaji, Joko; Amin, Bintal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This study was conducted in April-May 2013 in the inner marine waters of the eastern coast of Sumatra and the samples were analyzed in the Chemistry Laboratory of Marine Science Department of Fisheries and Marine Science Faculty of Riau University. This study was aimed to determine the chemical profile of oceanographic parameters in the coastal waters of the east coast of the Sumatra region into two parts, namely the southern and northern parts. Based on the analysis conducted on the chemical oceanographic parameters such as nitrate, nitrite, phosphate, ammonia, dissolved oxygen, and the degree of acidity. Concentration nitrate, nitrite, phosphate, and ammonia has a high concentration values with the approach of sampling stations towards the coast. While the dissolved oxygen and the degree of acidity of the sea towards the higher concentration value. The overall values of water quality parameters were as follow a). In the south section: nitrate 0.0102-0.0890 mg/l, nitrite 0.0675-0.4388 mg/l, phosphate 0.0022-0.0310 mg/l, ammonia 0.0403-0.6602 mg/l, DO 4-7 mg/l, pH 7.48-8.16. b). In the north section: nitrate 0.0025-0.0331 mg/l, nitrite 0.0738-0.1097 mg/l, phosphate 0.0044-0.0177 mg/l, ammonia 0.0333-0.9229 mg/l, DO 5-8 mg/l, pH 7.53-8.15. The physical parameters of the water was a factor in supporting this research.Keywords: East coast of Sumatra, chemical, oceanography
JENIS DAN KELIMPAHAN IKAN TEMBAKUL DI PANTAI DUMAI PROVINSI RIAU Naibaho, Reny Cristina; Samiaji, Joko; ', Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The study to observe the species composition and abundance on mudskipper fish was conducted in July 2013 in Dumai coastal waters of Riau Province, Indonesia. They study was carried out in providing the lack information on the biological aspects of the mudskipper from Indonesian seas in general, and of the riau’s coasts in particular. They study used a survey method by selecting 3 different stations as the sampling sites. Fish sampels were collected during the low tide. The quadrant were used in the field in facilitating the survey in fish abudance, whilst the identification was commenced in the Laboratory of Marine Biology of University of Riau. The resuld showed that a number of three species of the mudskipper were sucessfully recorded, i.e. Periopthalmodon schlosseri, Periopthalmus variabilis (Eggert) and Baleopthalmus boddarti (Pall). In terms of abudance, the highest, 0,1733 individuals/m2 was recorded in station I and the lowest 0,0867 individuals/m2, was found in stations III. Based on the diversity index (H’), it was reported that the Dumai coast had moderate diversity of the mudskipper. None of the fish was dominating the population since the dominance index (C) was very close to null from each station. It can be concluded that the habitats of mudskipper in Dumai coasts were in the state of unstable due to its E value in which also close to one.   Keywords : Mudskipper, species composition, abudance, Riau.
THE CONTENT ANALYSIS OF HEAVY METALS OF Pb, Cu, Zn, Ni AND ORGANIC MATTER IN THE SEDIMENT OF EAST COAST OF SUMATERA Fitria, Wahyuni; Amin, Bintal; Samiaji, Joko
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The research was conducted in August – November 2013. The purpose of this study was to determine the content of heavy metals of Pb, Cu, Zn and Ni in the sediment and its organic matter content in the east coast of Sumatera. The method used was survey method in wich the East coast of Sumatera coastal waters was used as the location of sampling.The results showed that different sediment fraction had different concentration of heavy metals. The sediment fraction of >250 μm had higher concentration than the fraction <63 μm and 63 μm – 250 μm. The concentration of Pb, Cu, Zn and Ni in the sediment were 7.29, 12.91, 8.69 and 14.57 μg/g respectively. Simple linier regression analysis showed of negative corelations for Pb, Cu, and Zn. and positive corelations for Ni with the content of organic matter in the sediment. The Pb, Cu, Zn and Ni concentrations were still below the value of ERL and ERM.Keywords : heavy metals, sediment, organic matter, east coast of Sumatera
The Abundance and Distribution Patterns of Mussel Shell (Meretrix meretrix) in Coastal Water of Tanjung Balai Asahan North Sumatra Province Nasution, Syafruddin; Samiaji, Joko; ', Marini
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This research was conducted from September – Oktober 2014 in coastalwater of Tanjung Balai Asahan north Sumatra. In general the shell was a group ofinvertebrate animal (invertebrates) with its shape easy to be recognized. Mostshell were characterized by the presence of a shell that protected the body andonly a small part type was not shelled. The mussel shell M. meretrix was animportat fishery commodities as food from the sea and popular to Tanjung Balaicommunity. Tanjung Balai Asahan coastal was one of the mussel shell M.meretrix potential in north Sumatra. This research was aims to determine theabundance and distribution patterns of mussel shell M. meretrix in the intertidalzone Tanjung Balai Asahan. The method applied on this research was surveymethod. Location ofthe study were divided into 2; station 1 was away from thesettlements; while station 2 was near residential area. To get a description of theabundance distribution of mussel shell M. meretrix in the intertidal zone of thecoastal Tanjung Balai Asahan, the tidal area was divided into 4 zones by dividingthe tidal zone vertically, range from high tide to low tide.In each zone a sample taken 5 plot with plot size 1x1m2. Sediment samplewere taken by 3 points in each zone, and rolled into one, so that amount ofsediment sample by 4 sample at each station. Sample taken shell, sediment,measurement quality of the measured temperature, salinity, pH, brightness. Theresult showed that the average abundance ranged from 1.6 ind/m2to 7 ind/m2. Thepattern of distribution in the study area tend to cluster. Based on the calculation ofthe t test at each station and each zone F test on the abundance of mussel shell M.meretrix showed equally not significantly different.Keywords: Mussel shell, abundance, sediment, pattern distribution, TanjungBalai Asahan.
MANGROVE LITTER DECOMPOSITION SPEED IN MARINE STATION DUMAI Azizah, Nur; Samiaji, Joko; ', Nursyirwani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This study of was conducted in December 2014 - March 2015 in the area of mangrove forests Marine Station Dumai. The purpose of this study was to determine the speed of litter decomposition of mangrove and the diversity of fungi in litter of mangrove. The method used was survey method. The sampling and measurement for water quality included salinity, temperature and pH that were done directly in the field. Weighing litter carried out at the Laboratory of Marine Chemistry whereas litter decomposition data analysis and identification of fungi diversity was carried out in the Laboratory of Marine Microbiology Faculty of Fisheries and Marine Sciences University of Riau. Mangrove leaf litter decomposition was in the highest at station III with a percentage value of litter decomposition rate of 1.31% per day. The identification results in leaf litter on the mangrove areas showed that there were eight types of fungi that included two of the species Aspergillus sp., Chaetomium sp., Candida sp., Gliocladium sp., Culvularia sp., Bipolaris sp. and Exophiala sp. The most often fungi found in each observation was Gliocladium sp. The highest fungi species diversity index was at score of 2.08 on a mangrove leaf litter that was found on observation IV.Key words : mangrove , litter , decomposition rate , fungi , Dumai Marine Station
STUDY OF MARINE ECOTOURISM POTENTIAL IN BERHALA ISLAND LINGGA REGENCY RIAU ARCHIPELAGO PROVINCE Rahmad Febriyandi; Joko Samiaji; Mubarak &#039;
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The study was conducted in May-June 2015 in Berhala Island and its surrounding waters. The aim of this study was to know the marine ecotourism potential in Berhala Island as marine ecotourism destination in the future. The method used in this study was a survey method. The data observed consist of exploration results and inventory attractions, respondents of tourist representation and in situ measurement of water quality parameters. Berhala Island had huge potential of marine ecotourism and has a tremendous opportunity to be developed as a marine ecotourism region. It was shown on the suitability of marine ecotourism development, both assessed based on the criteria of supporting tour, SWOT analysis, calculation the value of WTA and WTP to the calculation of potential economic value . The potential economic value of marine tourism in Berhala Island is Rp. 52,159,000 (in the agenda of the annual holiday). This value was sufficient with still lack of facilities in the Berhala Island and potentially will grow if there are a implementation of the construction and development in Berhala Island region in the future.Key Word: Potential, Marine Ecotourism, Berhala Island
DIVERSITY OF CRAB IN Mangrove Forest Ecosystems OF SELAT BARU BENGKALIS Ahmad Saripuddin; Joko Samiaji; Syafruddin Nasution
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This research was conducted in May-June 2015 in the mangrove forest ofSelat Baru ofBengkalis.The method used in this study was a survey method.Sampling was performed at the time of low tide. The location of sampling stations are divided into three observation stations. Station 1, located on mangrove areas adjacent to the shelter fish caught by fishermen, Station 2,was located in the mouth of theLiong rifer, station 3,was at the was mangrove forest area that was relatively still in good condition mangrove ecotourism area. Analysis of samples carried out in the Laboratory of Marine Biology, University of Riau.The study found 15 species of crab derived from 2 clases and 15 families.The results showed that the average density of crabs found in the station's highest density and lowest at station III II. Statistical analysis (ANOVA) note that abundance was not significantly different between stations on the level of confidence (F. 0.05).   Keywords: crab, Abundance, Organic Sediment, Selat Baru
Tidal Dynamics and Climate Change in Coastal Waters of Pangkalan Sesai Village, West Dumai District, Riau Province Febrian, Andi; Samiaji, Joko; Ghalib, Musrifin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The research was conducted from December 2014 to February 2015, in the coastal waters of Dumai, Riau Province. The research aimed to determine the tidal dynamics in relation to climate change. The research used survey method by performing 4 times periodically sampling. The result of measurement was then compared to Hydro-oceanographic Service Data.The results showed that tidal pattern in coastal waters of Dumai during a period of 3 months was classified into Mixed Semi-Diurnal Tides which occured 2 low tides and 2 high tides for 24 hours. Observations I-IV showed the tidal patterns were different because of different patterns of surface currents. Data of tidal pattern were compared to data obtained from Hydro-oceanographic data 3 years earlier showed a difference. Judging from the results of research that has been made known that there has been a rise in sea level if compared to data obtained from Hydro-oceanographic data 3 and 1 year before, namely an increase ranging between 19.5 to 22 cm. While the comparison of the data with the previous 2 years decreased, with a value of 45.5 cm. This means sea level in the study area has increased for 3 and 1 year. It was predicted that the existence of climate change has the effect of tidal conditions in these waters.Keyword : tidal pattern, climate change, Pangkalan Sesai, Dumai
IDENTIFICATION OF MACROFAUNAATTACHED ASSOCIATED WITH MANGROVE IN SUNGAITOHOR VILLAGE MERANTI DISTRICT RIAU Fitriansah, Heru; Samiaji, Joko; Nurrachmi, Irvina
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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                                         ABSTRACT Literatures on macrofauna organisms attached to mangrove islimited. The purpose of this research is to obtain the informationon macrofauna organism within the mangrove ecosystem. The research was conducted in December 2017. method used was direct purposive sampling. Macrofauna organisms attached and mangrove type were identified using identification books. The results obtained indicate that the most dominant organisms belonged to molluscs and crustaceans. Seven gastropod species and two crustaeans were(Cerithideacingulata, Cerithideaquadrata, Neritalineate, Chicoreuscapucinus, Cassidulaaurisfelis, Achatinellamustelina, Echinolittorinavidua, BalanusspandLlyoplaxsp). The type of mangrove vegetations were consistedof found, (Avicennia alba, Rhizopora apiculata,). Keywords:macrofauna, mangrove ecosystem, sungaitohor
TYPE AND ABUNDANCE OF PLANKTONIC DIATOMS IN RANGSANG BARAT WATERSDISTRICT MERANTI ISLAND RIAU PROVINCE Mery Mery; Joko Samiaji; Sofyan Husein Siregar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract Planktonic diatoms are plant-based microorganisms that live floating in the  water column, relatively lacking in motion and their presence is influenced by water quality and able to photosynthesize. This research was carried out in May 2018 in the waters of Rangsang Barat Meranti Islands Regency, Riau Province. This study aims to find out the type and abundance of planktonic diatomsin the waters of Rangsang Barat.The method used in this study was the survey method. Planktonic diatom sampling was using plankton net No. 25. The results of this study showed that the type and abundance of planktonic diatoms in Rangsang Barat waters at each station was different. The type most often type found at each station was the species Coscinodiscus sp.and Thalassiosira sp.The most rarely found species wereThalassionema sp. and Synedra sp. The highest abundance of planktonic diatoms was found at station II, in which reaches at 261.57 ind / l while the lowest was at station III with the value 48.61 ind / l. Based on the results of thetest One-Way, the  Anovaabundance of planktonic diatoms showed a significance value of> 0.05 i. e. 0.016, indicating the abundance of planktonic diatoms was significantly different. Keywords: Diatoms, Type, Abundance, Rangsang Barat Waters