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Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan
Published by Universitas Riau
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Earth & Planetary Sciences
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Articles 2,919 Documents
 179   180   181   182   183 
Chlorophyll-a Concentration in The Sepinang Lake, Pangkalan Serik Village, Siak Hulu Sub-District, Kampar District, Riau Province. M Sinaga, Saut; Siagian, Madju; Dahril, Tengku
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbstractMany activities arround Sepinang Lake contributes the input of organic and anorganic matter that influence the water quality, especially nutrient concentration in the water. This research was conducted of March – April 2018 in the Sepinang Lake and aims to understand the concentration of chlorophyll-a in the lake. Chlorophyll-a samples were collected from 3 stastions. In each stations there were two sampling sites, in the surface and 2 secchidepth. Sampling was done three times, once a week. Result shown that the chlorophyll-a content ranged from 4.32 µg/L – 9.24 µg/L. Based on the chlorophyll-a concentration, the Sepinang Lake can be categorized as mesotrophic to eutrophic. Water quality parameters values were temperature  30.6 0C - 31.50C, transparency 49.3 cm – 62.8 cm, depth 211 cm – 223.6 cm, DO 4.22 – 5.58 mg/L, CO2 9.32 – 15.98 mg/L  nitrate 0.065 -  0.231 mg/L, phosphate 0.089 – 0.135 mg/L and pH 5.2 – 5.6.Keywords : mesotrophic, water quality, oxbow lake
Type and Density of Zooplankton in The Sepinang Lake Pangkalan Serik Village, Siak Hulu Sub District, Kampar District, Riau Province D Kusumawati, Yuliana; Siagian, Madju; Simarmata, Asmika Harnalin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Abstract There were several human activities around the Sepinang Lake that contribute the input of organic and anorganic matter and thus influence the type and density of zooplankton. To understand the types and density of zooplankton in the Sepinang Lake, a research has been carried out in March-April 2018. There were three sampling points, namely in the inlet, in the middle of the lake, and in the end of the lake. In each sampling point, the water was sampled from the surface and 2 Secchi depth. Sampling were conducted 3 times, once/week. Water quality parameters measured were temperature, transparency, dissolved oxygen, pH,nitrate and phosphate. Results shown that there were 19 species of zooplankton present and they were belonged to 7 classes, namely Cladocera (2 species), Monogononta (9 species), Crustacea (3 species), Copepod (1 species), Ciliate (2 species), Sarcodina (1 species) and Eurotatoria (1 species). The zooplankton density in the Sepinang Lake was 2,448-3,808organisms/L.The most commontype of zooplankton present in the Sepinang Lake was Ciliate.Water quality parameter values are as follow,  temperature was 30.7-32.0oC, transparency was 49.3-62.8 cm, dissolved oxygen was 4.22-5.58 mg/L, pH was 5.33-5.60, CO2was 9.32-15.98 mg/L, nitrate was 0.07-0.23 mg/L and phosphate was 0.09-0.28 mg/L. Based on the type and density of zooplankton present, it can be concluded thatthe Sepinang Lake can be categorized as oligothropic. Keywords : Kampar River, Oxbow Lake, Eutrophic, Ciliate.
Addition of Probiotic Dosages in Artificial Feed for Growth and Survival Rate of Green Catfish (Hemibagrus nemurus) Saruksuk, Lucia Noralita; Alawi, Hamdan; Aryani, Netti
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT                             Artificial feed is one of the alternative diet to replace natural foodfor fish larvae.  The addition of probiotics to paste feed could  improve the digestibility of larvae. Probiotics are cultured products or live microbial feed suplements, which beneficially affect the host by improving the intestinal microbial balance. The aim of the research was to evaluate the addition of probiotic dosages to artificial feed on growth and survival rate of green catfish larvae. This research was conducted from July until September 2018 at the Fish Hatchery and Breeding Laboratory, Fisheries and Marine Faculty Riau University. The treatments in this research wereP0 (0 ml/kg feed), P1 (2 ml/kg feed), P2 (4 ml/kg feed), P3 (6ml/kg feed). The 8 days old larvae were rearing in 15 litreaquarium at stocking density 2 larvae/l for 40 days. Feeding was given 3 times/day at the rate 30% of biomass. Result showed  that the larvae fed 4 ml probiotic / kg  feed was the highest growth (1,7 g, 5,18 cm and 12,8 %/day), the best feed efficiency was 40,2% and the highest survival rate was 70%.Keywords :Green Catfish Larvae; Paste Feed; Probiotic; Growth;Survival Rate
Morphometric, meristic, and growth patterns of Anabas testudineusin the swamp area in the Sawah Village, Kampar District, Riau Province. Winda Lestari; Ridwan Manda Putra; Windarti Windarti
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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AbstractAnabas testudineus is a typeof freshwater fish that living inswamp area.Information on biological, including morphometric, meristic, and growth patterns of the fish is rare. To understand the morphometrical andmeristicalcharacteristics, and growth patterns of the fish, a research had been conducted from April to May 2018. There were 100 fishes (62.54-133.08 mm TL and 10.66-95.45 gr BW). There were 26 morphological characteristics measured and 11 meristical characteristics counted. The meristical characteristics were as follows: D. XV-XVIII, 10-14 P.10-14, V.I, 1-5 A. VII-X). The number of scale in the pre-dorsal fin was 5-18, in the cheek was 5-7, around the body was 11-18,  in the caudal peduncle was 24-30, above lateral line was 8-12  and under lateral line was 11-15. There were 4 morphometrical characteristic differences between male and female A. testudineus. In male fish, distance between eye and mouth, anal fin length and eye diameter are longer than those of the female, but female has wider body width than male. The length-weight relationship shown that the growth of male and female was allometric positive. Keywords:climbing perch, allometric, morphological characteristic, meristical characteristic 
Bivalve Community Structure on Mangrove Ecosystem in the Mengkapan Village, Sungai Apit Subdistrict, Siak Regency, Riau Province Yollanda Defira; Adriman Adriman; Muhammad Fauzi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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AbstrackMangrove ecosystem in the Mengkapan Village degraded due to illegal logging, settlements and ecotourism. Condition of   the mangrove  affects the community structure of bivalvesin general.This study was carried out on February - March 2018,  in the Mengkapan Village. The purpose of the study was to determine the structure of bivalves community in the mangrove ecosystem.There were 3 stations and in each stasion  there was 1 transect line with 3 plots (1x1 m). The bivalves present in the plots were collected manually every two weeks.Data were analyzed descriptively. Results shown that there were 4 bivalves species present, there wereGeloina expansa, Polymesoda erosa, Polymesoda bengalensis, and Anadara granosa. Bivalve density range from 10 - 30organism/m2, diversity index H' 0.987 - 1.956, dominance index C 0.264 - 0.509 and similarity index E is 0.017 – 0.132. Temperatures was 25-28°C, with sandy mud substrate, organic material 32.320% - 36.353%, water pH 6-7, soil pH 6 - 7 and salinity 24-26 0/00. The bivalve community structure in Mengkapan Village is classified as medium with the dominant species isP. bengalensis. Keywords: Diversity index H’, Dominance index C, Similarity index E,Pelecypoda, Organicmaterial
Effect of Biofertilizer Dosage on Formulasion and Biomass of Azolla microphylla on Zooplankton Abudance in Peat Soil Containers Irsal simbolon; Syafriadiman Syafriadiman; Saberina Hasibuan
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Abtrack This research was conducted from October 1th to December 31st, 2017 in the Kualu Nenas Village, Tambang District, Kampar regency, Riau Province. The purpose of this study was to determine the effect of formulation biofertilizer doses, and Azolla microphylla biomass on zooplankton abundance in each treatment. This research method uses experimental design with factorial experiments with Randomized Block Design (RBD). The first treatment used a formulation (P) biofertilizer dose without formulation biofertilizer dose (P0), 300 g/m2 (P1) formulation biofertilizer dose, formulation 450 g / m2 (P2) biofertilizer dosage, 600 g/m2 (P3) formulation biofertilizer dose, the biofertilizerdosage formulation is 750 g/m2 (P4). And the second treatment is the biomass of Azolla microphylla (B) without the biomass of Azolla microphylla (B0), biomass of Azolla microphylla 20 g/m2 (B1), biomass of Azolla microphylla 40 g/m2 (B2), biomass of Azolla microphylla 60 g/m2 (B3) . The results of this study showed that the biofertilizer dosage formulation had an effect on the abundance of zooplankton. The best treatment for formulation biofertilizer doses was P2 (450 g/m2) with an abundance of zooplankton 496 ind/l. The biomass Azolla microphylla had an effect on the abundance of zooplankton in the best treatment for biomass Azolla microphylla is B1 (20 g/m2) with an abundance of zooplankton 489 ind/l. Then the best of the combination factors used in this study was P2B1 (450 g/m2 and 20 g/m2) with an abundance of zooplankton 10,500 ind/l. Measurements of water quality parameters such as Temperature, pH, DO, CO2, Nitrate, and Orthoposfat, are categorized as good and supportive for cultivation on peatlands. Keyword: Formulation Biofertilizer, Biomass Azolla microphylla, Zooplankton, Peatland
STUDY OF UTILIZATION OF FACILITIESFISHING PORT TANJUNG TIRAM KABUPATEN BATUBARA PROVINCE SUMATERA UTARA Karlina, Noni; Syaifuddin, Syaifuddin; Bustari, Bustari
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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ABSTRAK This research was conducted in May 2018 at Fishing Port TanjungTiram by using a survey method. Data analysis used facility requirements analysis and facility utilization analysis. The facilities available at PP TanjungTiram are basic facilities, functional facilities, and supporting facilities. Of the 10 facilities available at PP TanjungTiram, 3 facilities are calculated for utilization, namely the loading dock length at pier II because loading and unloading activities of fishing boats are only carried out at dock II, port pool area, and the depth of the port pool. It was obtained that PP TanjungTiram dock utilization rate of fisheries activities amounted to 81,46%, meaning that the facilities in the category were utilized, the utilization rate of the port pond area was 57.72%, it could be said that the utilization rate was classified as underutilized while the depth of the port pool had a utilization rate of 114,28% so it can be concluded that the utilization rate for the port pool is included in the highly utilized category. Keywords:Fishing Port, Tanjung Tiram, utilization of facilities
Types and Abundance of Peripyhton in the Pipe Placed in The Air Hitam River, Pekanbaru City, Riau Province Naziruddin Naziruddin; Tengku Dahril; Madju Siagian
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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AbstractPeriphyton is a sessile microscopic organism that attach on certain substrate. Research aims to determine the type and abundance of periphyton on Pipe substrate has been carried out in April-May 2018 in the Air Hitam River. There were three sampling stations, namely S1 (in the upstream), S2 (in the middle) and S3 (in the downstream). Samplings were conducted once/week for a 3 weeks period. The periphyton samples are brushed from the pipe substrates (8 x 6) cm2. The number of substrates in S1, S2 and S3 were 5, 4, and 3 pieces respectively. Water quality parameter measured were water current, temperature, transparency, pH, dissolved oxygen, free carbon dioxide, nitrate, and phosphate. Results shown that there were 35 types of periphyton present and they were belonged 5 classes, namely Bacillariophyceae (17 species), Cyanophyceae (4 species), Chlorophyceae (10species), Euglenaphyceae (3 species) and Xantophyceae (1 species) . The abundance of periphyton in the pipe substrate in the S1 was 35,609 cells/cm2, in S2 was 66,989 cells/cm2and in S3 there was 140,470 cells/cm2. The water quality parameters were as follows: water current 0.08-0.46 m/s, transparency:18-29 cm, temperature 29-29,30C, dissolved oxygen 3.43-3.56 mg/L, free carbon dioxide1 6,2-7,9 mg/L, nitrate 0.302-0.529 mg/L, phosphate 0.348-0.542 mg/L. Keywords: lotic, sessileorganism, water quality,plastic substrats
ABUNDANCE OF Anabaena azollae AND NITRATE LEVELS IN Azolla microphylla BRACKISH WATER CULTURE Nursyafni Nanggola; Irwan Effendi; Nursyirwani Nursyirwani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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ABSTRACT               Azolla michrophylla is beneficial for Anabaena azollae because it can act as a host through the supply of oxygen and nitrogen that can be used. Nitrogen fixation carried out by A. Azollae is atmospheric nitrogen gas (N2) converted into ammonia (NH3). This research was conducted at the Laboratory of Marine Microbiology and Marine Chemistry, Department of Mariene Science, Faculty Of Fisheries And Marine Science, University of Riau in April to June 2018. The purpose of this research was to determine the abundance of A. azollae in the growth of A. microphylla plants and determine the levels of nitrate contained in the growth of A. microphylla in brackish water culture. Factorial randomized group design (RAK) was applied in this experimental. Temperature, salinity, and pH were water quality parameters measured. The results showed that the best growth of A. microphylla was obtained at a salinity of 0 ppt with a starter of         A. microphylla 3 gram with a value of 50.42 gram. The highest abundance of A.  azollae is found in salinity 3 ppt with a 3 gram level with the abundance of 5643 cells / ml. A. microphylla and A. azollae had sufficient nitrate levels for their growth in brackish water cultured at 0, 1, 2, and 3 ppt salinitis of in combination with  A. microphylla 1, 1.5 and 3 gram as a starters. The highest nitrate level was obtained on the 14th and 21st day with a value of 1.2625 mg / L and 1.4500 mg / L.   Keywords: Azolla microphylla, Anabaena azollae, Growth, Abundance, Nitrate.
Reproductive Biology Aspect of Freshwater Shrimp (Macrobrachium mammilodactylus) from the Terminal AKAP Lake, Payung Sekaki District, Pekanbaru City J. Wiratama, Prano; Windarti, Windarti; Efawani, Efawani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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AbstractMacrobrachium mammilodactylus is a type of freshwater shrimp that inhabits the Terminal AKAP Lake. The population of freshwater shrimp in this lake is relatively high and its indicate that reproduction of the shrimp was succeed. To understand the reproduction biology of the shrimp, a study has been carried out from February to March 2018. Sampling were conducted 4 times, once/week. Totally 107 shrimps (26 male and 81 female) were captured, they were 23.31-47.50 mm TL. and 0.1932-1.2132 gr BW. Sex ratio of males and females was 1:3.1. In each sampling time there were shrimps with 2nd, 3rd and 4th maturity level. Gonad Somatic Index (GSI) of the male was ranged from        0.80-3.19% and that the female was ranged from 0.98-4.88%. Fecundity is around 128-273 eggs/shrimp and the egg diameter was 0.43-0.73 mm. There were 27 ovigerous females that carried 13-289 eggs/female. The diameter of carried egg was 0.50-1.25 mm with embryo development in stage I (the embryo with no eye) and II (the embryo with developed eyes). The relationship of fecundity and TL toward BW are weak, r=0.39and r = 0.37respectively, while the relationship between fecundity and Gonad Weight was strong (r = 0.84). There were ovigerous females that had eggs in several developing stages inside their ovary, and it indicates that M. mammilodactylus  is a partial spawner. Keyword: Freshwater shrimp, sex ratio, maturity level,GSI, fecundity

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