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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.
Spacing Effect on the Percentage of Life and Growth of Rhizophora Apiculata in Mangrove Education Center Marine Station University of Riau Arifin, Taat Mujaid; ', Efriyeldi; ', Zulkifli
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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This research was conducted in March-May 2014 in central study mangrovemarine station University Riau. This study aims to determine the effect of spacingon percentage seedling survival and growth of Rhizophora apiculata. The methodused in this research were experimental methods. Spacing treatment tested in thisstudy were: (1) Planting with a distance of 25 cm x 25 cm (2) Planting with adistance of 50 cm x 50 cm (3) Planting with a distance of 75 cm x 75 cm and (4)Planting by distance planting 100 cm x 100 cm. The results of the study for 45days was observed that the percentage of survival of the seedlings of Rhizophoraapiculata in various types of treatment spacing of the percentage of live 100%.Seedling height growth of Rhizophora apiculata good are at a spacing of 75 cm x75 cm (treatment C3) with average growth height of 0.080 cm/day. Meanwhile,the best steam diameter growth is best on Rhizophora apiculata are at a spacing of25 cm x 25 cm (treatment A2), with a trunk diameter growth of 0.0030 cm / day.The highest growth the number of leaves on the seedlings reached 4.9 strandscontained in a spacing of 25 cm x 25 cm (treatment A1). The data showed thatthere was effect of spacing on height growth, diameter growth and number ofleaves on Rhizophora apiculata seedlings, while the Anova test obtained therewas no the significant effect of spacing (Sig. > 0.05). It means that the proposedhypothesis (Ho) is accepted and (Ha) was rejected, which indicates that theprovision of spacing did not significantly affect height growth, diameter growthand number of leaves on Rhizophora apiculata seedlings during the observation.Keywords: Marine station, Rhizophora apiculata, The Effect of Spacing.1). Student
ABUNDANCE AND DISTRIBUTION PATTERN OF MANGROVE SNAIL Telescopium telescopium IN THE DARUL AMAN COASTAL OF RUPAT, BENGKALIS DISTRICT, RIAU Andita, Hardianto; Mulyadi, Aras; ', Efriyeldi
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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ABSTRACTThe research was conducted on September to October 2014. The study aims were to determine the abundance, size distribution and distribution pattern of mangrove snail (T. telescopium) in the Darul Aman Coastal Bengkalis Regency. The method used was a survey method. Samples of snail population and sediment were collected by a single visit during low tide. Location of study was divided into 3 stations. Station I have grow rare mangrove, residential community and coastal abrasion, station II have dense and closely mangrove, station III have close with river estuary, rarely struck high tide because higher dan mangrove grow rarely than. The sample analysis carried out in Marine Biologi Laboratory of Fishery and Marine Science Faculty of Riau University.The results of the study show that the highest abundance of snail was at the station III (2,05 ind/m2) and the lowest was at the station I (0,6 ind/m2). The most dominant of size distribution is 81 – 90 mm. Distribution pattern in this area is uniform with Id between 0,88 – 0,98.Keywords: Telescopium telescopium. abundance. distribution. Darul Aman coastal
Vegetation Community Structure of Mangroves in Sekilak Coastal Batam Riau Islands Mukhti, Febrianto Roby; ', Efriyeldi; ', Elizal
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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A study of mangrove forests in Sekilak Coastal Batam Riau Islands was conducted in February 2014. The aim of this study was to determine the species composition, dominant species of mangrove and conditions in Batam Sekilak Beach. The survey method was used in this reaserch, where the observations were made with the belt transect method / belt transects. In the mangrove ecosystem was found 5 species of mangrove, included 3 families : Rhizophora apiculata, Rhizophora mucronata, Bruguiera gymnorrhiza, Xylocarpus granatum, and Lumnitzera littorea. Importance values was highest on the group tree Rhizophora mucronata 136,79% (Station 1), the highest importance values at station 2 was 103,37% and station 3 was 95,81%. In the group of seedling the highest INP was Rhizophora apiculata (163.68%) at Station 1, at station 2 on Rhizophora mucronata with INP 120,60%, and the highest INP at station 3, Rhizophora apiculata was 110,95%. Conditions of mangrove ecosystem at Station 1 can be categorized damaged by the criteria rarely. Station 2 and Station 3 in good condition with moderate criteria.Keywords: Mangrove, Sekilak Beach, Batam
Shellfish abundance relationship sipetang (pharella Acutidens) and other macrozoobenthos in mangrove Forest dumai riau university marine station Juandi, Bona; Tanjung, Afrizal; ', Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The experiment was conducted in December 2013 in the mangroves ofDumai Riau University Marine Station. The method used in this study is a surveymethod, to make observations and field sampling. This study aims to determinethe relationship of the abundance of shellfish sipetang (Pharella acutidens) withother macrozoobenthos abundance in mangrove forests Dumai Riau UniversityMarine Station. Sampling was carried out sipetang and other macrozoobenthos inplace - a place that is found sipetang, the plot (plot) measuring 1m x 1m2,amounting to 12 and sediment samples were taken at each station.Macrozoobenthos species were found in mangroves of Dumai RiauUniversity Marine Station is Telescopium telescopium, Chicoreus capucinus,Geloina coaxans, Pitar manillae, Parasesarma cf. pictum, Uca coarctata andArenicola marina. Results for the four stations sipetang abundance in mangroveforests ranged from 6.67 to 9.67 ind/m2 while other macrozoobenthos abundanceranged from 7.00 to 9.67 ind/m2. Macrozoobenthos abundance relationships andother sipetang positive and very strong where the higher the higher the abundanceof macrozoobenthos abundance of shells sipetang.Keywords: Pariaman, macrozoobenthos, Distribution
Analisis Kandungan Logam Berat Pb, Cu Dan Zn Pada Daging Dan Cangkang Kerang Kepah (Meretrix Meretrix) Di Perairan Bagan Asahan Kecamatan Tanjung Balai Asahan Silalahi, Herrys V; Amin, Bintal; ', Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This study was conducted in January 2014 in the waters of Tanjung Balai Asahan Subdistrict Bagan Asahan. The purpose of this study was to determine the content of heavy metals Pb, Cu and Zn that are present in flesh and shells by size, to determine the relationship of heavy metal content in the meat and shells of different sizes and to determine the feasibility of shellfish (M. meretrix)consumption. Content of heavy metals Pb, Cu dan Zn in shellfish (M. meretrix) was analyzed by the dry method used by et all. (2003) The results showed that Pb content in the shell was higher than in the flesh(sig.<0.05), while Cu and Zn higher in the flesh than in the shell(sig.<0.05). Based on body size, Pb in flesh washigher in medium size (1.16 mg/g) and for the other metals were higher in largersize, namely Cu (24.57 mg/g) and Zn (1619.17 mg/g). In the shell, for Pb and Cu were higher in largersize, namely Pb (5.50 mg/g) and Cu (12.33 mg/g), while Zn was higher in small size (434.58 mg/g).Keywords: Pb, CuandZn; M.meretrix; Bagan Asahan
NITRATES AND PHOSPHATES CONTENT IN THE WATER AND SEDIMENT IN SEAGRASS ECOSYSTEM IN THE NORTH OF COASTAL AREA OF RUPAT SUB DISTRIC BENGKALIS RIAU Sitorus, Tiroy; ', Zulkifli; ', Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This research was take place in north Rupat island beach, Bengkalis regency Riau province on January 2016. The purpose of this research is to find out the contents of nitrate and phosphate in the water of seagrass ecosystem in north Rupat island and to find out the contents of nitrate and phosphate in the sediment of seagrass ecosystem in north Rupat island as well as to find out the difference of nitrate and phosphate contents in the water and sediment between station. The parameter that have been observed is the physics and chemist of water parameter. Transect squares device was use to calculated the density. While to determine nitrate and phosphate in the water leads to Saeni and Latifah in Sanggam, 2008 and to determine nitrate and phosphate in sediment leads to Siaka et al., 1998. Base on research result the average content of nitrate in the water is 0.2264-0.2417 mg/L, and in the sediment 0.1347-0,.5319 mg/L. While the average content of phosphate in the water was 0.1991-0.2433 mg/L, and in the sediment 0.2507-0.3872 mg/L. The density of seagrass on each station in north Rupat island beach was about 23.66-154.66 stands/m2. From the result of this research we found from the t test result, the significant differences of content of nitrate and phosphate in water an cediment show that the differences is not significant, show that the condition of north coatsal of Rupat island is water that has midlle level of pressure and polution.Keywords: density of seagrass, Nitrate, Phosphate, Water, Sediment, Seagrass Ecosystems, North Shore Rupat Island, Riau Province
Potential Marine Ecotourism Development Poncan Island Tower Sibolga in North Sumatra Province Adawiyah, Rabiatul; Yosswaty, Dessy; ', Efriyeldi
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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AbstractByRabiatul Adawiyah 1), Dessy Yosswaty dan Efriyeldi 2)The research was conducted on the Moon from October-November 2014 of Poncan Island Tower Sibolga in North Sumatra Province. Order to determine the potential for marine ecotourism of Poncan Island Tower to serve as a marine tourism area. The method used in this study is a survey method, ie by observing, collecting data and samples directly into the field and collect the necessary data qualitatively and quantitatively. Data were taken and observed consist of primary data and secondary data. The results showed that the potential of the object and appeal Poncan Island ecologically Tower is yellowish white sand with crystal clear waters and coral reefs which have magnificent beauty, as well as activities that can be done such as: fishing, snorkeling and enjoy activities such as driving around the island . The calculation of the potential economic value obtained is Rp. 16.614.713.500 billion. This suggests that the Pulai Poncan Tower decent and has a fascination for visitors to come.Keywords: Marine Ecotourism, Development, Poncan Island Tower
STRUCTURE COMMUNITY OF MANGROVE FOREST IN NORTH COASTAL RUPAT ISLAND DISTRICT OF BENGKALIS RIAU PROVINCE Nasution, Muhammad Rasid; Samiaji, Joko; ', Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This research was conducted in January 2017 in north coastal rupat island district of bengkalis riau province. The purpose of this researches is to determine the structure community of mangroves in rupat island. The method used in the research was transect line method and plot. The result of observation in North Rupat Island showed the existence of mangrove vegetation that comes the 17 species and 7 families. The species of most dominating growth was Rhizophora apiculata has important values and high density than other species was value 288.9 ind/ha. The second of high density was Rhizophora mucronata with value 144.4 ind/ha. So, the species of Rhizophora apiculata and Rhizophora mucronata is the species capable of grow well on each environment in north coastal rupat island district of bengkalis riau province. Researchers also identify zoning mangrove vegetation.Keywords : Rupat Island, Structure Community, Mangroves, Rhizophora1Student of
Distribusi dan Nisbah Kelamin Kerang Lokan (Polymesoda expansa) di Perairan Pantai Desa Sungai Bela Kecamatan Kuala Indragiri Kabupaten Indragiri Hilir ', Zefendra; ', Efriyeldi; ', Elizal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Penelitian ini dilaksanakan pada bulan Mei 2014. Eksploitasi kerang lokan (P.expansa) yang dilakukan nelayan selama ini tanpa memperhatikan ukuran yangditangkap mulai dari yang besar sampai yang relatif kecil. Tujuannya untukmengetahui distribusi dan nisbah kelamin kerang lokan. Metode survey digunakanpada 3 zona intertidal, selanjutnya dilakukan analisis sampel dilaboratorium.Kelimpahan kerang lokan tertinggi ditemukan pada zona upper sedangkankelimpahan yang terendah ditemukan pada zona lower. Nisbah kelamin pada zonalower seimbang, sementara zona middle dan upper sebaliknya, namun rata-ratanyaseimbang. Pola distribusi mengelompok pada zona upper dan merata pada zona lowerdan middle (Indeks morisita 1,052 dan 0,643) Analisis Chi – square memperlihatkansebaran yang tidak acak (χ2 hitung ˂ χ2 tabel).Kata kunci: Kerang Lokan (P. expansa), Distribusi, Nisbah Kelamin