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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan
Published by Universitas Riau
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Core Subject : Science,
Earth & Planetary Sciences
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Articles 2,919 Documents
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Analisis kandungan minyak pada saat pasang dan Surut di perairan sekitar pelabuhan Gunungsitoli kabupaten nias Damai S Harefa; Syahril Nedi; Bintal Amin
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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Abstract

This study was carried out in February 2014, with the aim to analyze the oilcontent during high and low tide in the different area in coastal waters aroundGunungsitoli Port of Nias Regency. This study was expected to serve as the initialinformation about the content and distribution of oil in the water and can be used as areference in reviewing the environmental conditions in the waters of GunungsitoliPort of Nias Regency. The results showed that the average oil content was 0.256 ppmat high tide and 0.193 ppm at low tide. The average oil content was not significant bydefferent (p > 0.05) betweel high and low tide. The oil content during high tide basedon the distance from the beach were as follow : 0.281 ppm near the beach, 0.273 ppmin te middle and 0.214 ppm in auter coastal. Meanwhile during the low tide the oilcontent were 0.0234 ppm at the beach, 0.174 ppm in the middle, and 0.172 ppm inthe auter coastal, respectively. Based on the distance from shore oil content showedno significant difference (p > 0.05). Oil content in the port / area was 0.288 ppm, intourist areas / settlement, 0.237 ppm, and in the Depo Pertamina was 0.244 ppm andthey showed no significant diffrence (p > 0.05).Keywords: Oil Content, Tidal, Gunungsitoli Port.
Analysis of Oil Content and Diatom Abundance in Coastal Waters of Medan Kota Belawan North Sumatera Situmorang, Herlin Margaretha; Amin, Bintal; Nedi, Syahril
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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Abstract

The research was conducted in May 2014 in Medan Kota Belawan coastal waters. The aim of this research was to analyze the oil contents and diatom abundance as well as their correlation during high and low tide. Samples of sea water for oil and diatom analysis were collected from 4 stations. The analysis of oil content as well as identification and quantification of diatom were carried out in Marine Chemistry Laboratory, Faculty of Fisheries and Marine Sciences, University of Riau in Pekanbaru. The results of the study showed that the highest oil content was found during the high tide in Station 1 (0.322 ppm) and the lowest was at Station 4 (0.040 ppm). Diatoms that were found in the surface waters of Medan Kota Belawan coastal water comprising of 18 species. Nitzschia scrianata was the species with the highest abundance (3640.73 cells/l). The diatom abundance was found to be highest during high tide in Station 4 (1213.58 cells/l) and the lowest was during low tide in Station 1 (360.80 cells/l). Oil content with diatom abundance showed a weak negative correlation (Y = 639,7-971,1x ; R2 = 0.146 ; r = 0.382) at high tide while at low tide Y = 520.7-1370.0x ; R2 = 0.115 ; r = 0.339 which mean that increasing oil content will decrease the abundance of diatoms in Medan Kota Belawan coastal waters.Keywords : Belawan Coastal Waters, oil, diatoms and tide
The diversity of gastropods at intertidal zone cingkuak island and pasumpahan island West sumatra Manurung, Cici Lestari; Tanjung, Afrizal; ', 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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Abstract

This study was conducted in June 2013. The study aim was to the determine the diversityof gastropods in the intertidal zone of Cingkuak Island and Pasumpahan Island. Survey methodwas used to collect information related to the purpose of the study. There were 2 stations chosenalong Cingkuak Island and Pasumpahan Island. For each station there were 3 transects, whichhave 5 plot for every transect, were employed. Sample of gastropods were transported to thelaboratory for identification, counting of the individual number, and calculation of the value ofdiversity index, dominance index and equibility index.The results showed that there were 164 individual gastropods at Cingkuak Island and 90individual gastropods at Pasumpahan Island. The gastropods were comprised of 4 orders, 4families and 16 species. The most dominant species founded in Cingkuak Island andPasumpahan Island were Littoraria intermedia and Littorina vespacea. The value of diversityindex at Cingkuak Island was high and at Pasumpahan Island was medium. Value of equabilityindex was medium. Value of dominance index at Cingkuak Island and Pasumpahan Island waslow. The habitat of gastropods still supported and considered safe for macrozoobhenticorganism.Keywords: Diversity, Gastropods, Cingkuak Island, Pasumpahan Island
Effect of Stocking Density on Seaweed Production (Kappaphycus alvarezii) Rearing With Hanging Rope Method Rosdiana '; Usman Muhammad Tang; Mulyadi '
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Abstract

This study was conducted from 17 March until 28 April 2014 in the waters of Hamlet Village Sugie Subdistrict Moro Karimun District of Riau Islands province. The method used is an experimental with 1 factors and five level of treatment and 3 replications. 1 meter rope tied with 100 g of seaweed seed with different space of 10 cm, 15 cm, 20 cm, 25 cm and 30 cm respectively. Data were analyzed using ANAVA (P<0.05). Based on the findings that the was best of (Kappaphycus alvarezii) on density with the specific growth rate highest of 30 cm was (766.67 g/clump; 4.99%) and the lowest density of 10 cm with an average weight (212 g/clump; 1.80%). while the highest dried seaweed production was in the treatment of 15 cm with a dry weight of 370.42 g/ hanging rope and the lowest of 10 cm with a weight of dry production 265 g/ hanging rope.Keyword : K. alvarezii, Seaweed Production, Hanging Rope Method, Growth, Karimun
The Abundance of Toxic Dinoflagellate Gambierdiscus sp, Ostereopsis sp and Prorocentrum sp on Seagrass Leaf Thalassia sp from the Nirwana Beach West Sumatera Province Rawati Irmaida Sitorus; Thamrin &#039;; Syafruddin Nasution
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Abstract

Dinoflagellate is a group of monocelullar microalga prossesing of double flagel. This organism can be found in a subtropic and also in a tropic marine water. Some potentially toxic epibentic dinoflagellate assemblage with macroalgae and potentially to cause blooming such as Gambierdiscus sp, Ostereopsis sp and Prorocentrum sp. Blooming of this population can generate "Red Tide". This reaserch was aimed to understand about dinoflagellate abundance of Gambierdiscus sp, Ostereopsis sp and Prorocentrum sp at Nirwana Beach, West Sumatera. The method used was a survey method. Sampling was done by cutting the seagrass stands, and from the stand taken three leaves and then stored in plastic bags containing clean sea waters. The dinoflagellates were separated from seagrass leaves by shaking in a plastic bags. And then filtered with 135μm and 20 μm respectively. Dinoflagellate then observed on a Sedgewick Rafter Cell under a microscope. The results showed that the highest abundance of dinoflagellate on Thalassia sp found at station 1 (132 cell/g leaf). The lowest abundance occurred at station 3 (69 cell/g leaf), which close to mangrove area. The most abundance of all species was Prorocentrum sp, while the lowest abundance cell was Gambierdiscus sp.Key word: Dinoflagellate, Abundance, Seagrass, West Sumatera
Analisis Perkembangan Produksi Perikanan Budidaya Di Kabupaten Rokan Hulu Provinsi Riau ', Rinaldi; Bathara, Lamun; Hamid, Hamdi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Abstract

The Research on Analysis of Aquaculture Production Development wasconducted in 31 May – 16 June 2014 at Rokan Hulu Regency of Riau Province.The aims of the study were to determine the aquaculture resource potentialthrough the production development analysis, includes the effect of theaquaculture production and also production estimate for the next five years. Themethod used in this study is a Survey Research Development to view theproduction progress each year to support district development.The result showed that the progress of aquaculture production increasedannually with average of 25% per year, and the impact of aquaculture toproduction about 80,8 %, as well as production estimate for 5 years.Keywords : Development, Production, Rokan Hulu district
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
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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
Pemeliharaan Benih Ikan Baung (Mystus Nemurus C.V) Dengan Sistem Bioflok Pada Sistem Resirkulasi Akuaponik Tiya Sari Harahap; Mulyadi &#039;; Rusliadi &#039;
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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This research was conducted from July to August 2014, for 35 days in Breeding Laboratory Unit of Fisheries Faculty and Marine Sciences, University of Riau Pekanbaru. The aims of the research was to investigate rearing of river catfish (Mystus nemurus C.V) with biofloc system in aquaponic recirculation system. The method used was experiment with 3 treatments and 3 replications. The treatments were P1 = 20 ml/L of probiotic bacteria inoculant, P2 = 25 ml/L of probiotic bacterial inoculant, and P3 = 30 ml/L of probiotic bacteria inoculant. The best treatment was achieved by P3 with absolute growth weights (3.79 g), absolute growth length (6.10 cm), daily growth rate (6.54%) and survival rate 90%. The best water quality parameters recorded during in the research period was achieved by P3 ammonia (NH3) 0.33-0.72 mg/L, nitrit (NO2) 0.07-0.55 mg/L, nitrat (NO3) 0.13-1.23 mg/L, temperature 27-30 0C, pH 5-6, dissolved oxygen (DO) 3-4.5 mg/L and (CO2) 7.99-11.98 mg/L.Keywords: River catfish seed (Mystus nemurus) biofloc, Aquaponic recirculation
Effect of Thyroxine Hormone (T4) Addition in Feed to the Growth Rate Trachinotus Blochii, Lacepede Tanthowi, Muhammad Imam; Tang, Usman M; Putra, Iskandar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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The aim of this research was to investigate the dose of Thyroxine (T4) hormone in fish meal on the growth of Bawal bintang fish (Trachinotus blochii, Lacepede). The research method used was experimental method and Complete Random Device (CRD) with four treatments and three replications. The treatments in this study were control (without thyroxine hormone), 0,3 mg Thyroxine hormone / kg of feed, 0,6 mg Thyroxine hormone / kg of feed and 0,9 mg Thyroxine hormone / kg of feed. The best result was treatment on 0,9 mg Thyroxine hormone / kg of feed with absolute growth weights (1,42 g), absolute growth length (2,34 cm), specific growth rate (6,07 %), feed efficiency (69,34 %) and survival rate (99,83 %).Keywords : Survival rate, Feed efficiency, Bawal bintang
REARING OF GREEN CATFISH (Mystus nemurus C.V) ECO-FRIENDLY WITH BIOFLOCS TECHNIQUES Ringgi Desra Denesta; Iskandar Putra; Mulyadi &#039;
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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This research was conducted from June until July 2014 at LaboratoryAquaculture of Technology University of Riau. The purpose of this research wasto investigate growth of the green catfish with high stocking density in bioflocstechniques. This research using experimental method and completely randomdesign (RAL) with three treatment and three replications, three are P1 : stockingdensity of green catfish 300 fish/m3, P2 : stocking density of green catfish 400fish/m3, P3 : stocking density of green catfish 500 fish/m3. The result showed thatgreen catfish with high density in bioflocs techniques was not effectedsignificantly on absolute growth weight, absolute growth length, daily growthrate, survival rate and feed efficiency. But the best treatments in this research wasstocking density of fish 500 fish/m3, with high growth weight rate 5,06 g, lengthgrowth rate 3,65 cm, daily growth rate 4,40 %, survival rate 100 %, and feedefficiency lowers 17,48 %.Keyword : Green catfish, High density, Bioflocs technology

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