Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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HUBUNGAN SUBSTRAT DASAR DENGAN KELIMPAHAN MAKROZOOBENTHOS DI PANTAI PELAWAN PULAU KARIMUN BESAR KABUPATEN KARIMUN PROVINSI KEPULAUAN RIAU Fadly, Muhammad Rizki; Rifardi, Rifardi; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstrak Penelitian ini bertujuan untuk menganalisis hubungan antara ukuran partikel substrat dasar dan bahan organik dengan kelimpahan makrozoobenthos di Pantai Pelawan. Penelitian ini dilaksanakan di perairan Pantai Pelawan Pulau Karimun Besar Kabupaten Karimun Provinsi Kepulauan Riau. Metode yang digunakan adalah survey. Penentuan titik sampling menggunakan metode purposive sampling. Pengambilan sampel di lapangan telah dilaksanakan pada bulan Februari 2017 dan analisis fraksi sedimen di Laboratorium Kimia Laut serta identifikasi makrozoobenthos dilakukan di Laboratorium Biologi Laut pada bulan Maret 2017. Hasil penelitian menunjukkan bahwa fraksi sand mendominasi pada lokasi penelitian, dengan persentase antara 45.64-95.69%. Kandungan bahan organik di perairan pantai Pelawan tergolong rendah yakni  berkisar 0.42-5.07 %. Jenis makrozoobenthos dari pengamatan penelitian diperoleh 1 kelas yaitu dari kelas Gastropoda yang terdiri dari 17 spesies dengan nilai kelimpahan antara 8.3-112.5 Ind/m2. Hubungan antara ukuran partikel substrat dasar dan bahan organik dengan kelimpahan makrozoobenthos masing-masing menunjukkan hubungan kuat dan sangat kuat. Kata Kunci : Substrat Dasar, Bahan Organik, Makrozoobenthos , Pantai Pelawan Kabupaten Karimun.
COMUNITY STRUCTURE OF GASTROPOD ON MANGROVE FORESTS DESA LALANG KECAMATAN SUNGAI APIT KABUPATEN SIAK Susanti, Rahmi; Efriyeldi, Efriyeldi; Nasution, Syafruddin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
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 AbstractThe class of gastropods is the largest class in Phylum Molluska. One of the habitat that is controlled by gastropod is mangrove forest. The structure of the gastropod community of phylum molluska is influenced by changes in environmental factors. This research was conducted in Lalang Village Sungai Apit Subdistrict Siak Regency, in March 2018. The purpose of this research is to know the structure of gastropod community which includes: type, density, diversity, uniformity, dominance, distribution pattern.To support the research data, also observed mangrove density and  water quality in Lalang Village in Sungai Apit Subdistrict Siak Regency. Sampling using line transect method was done on 3 stations. 6 gastropod species found in mangrove forest area with the value of gastropod density obtained at each research station is 3.57-4.84 ind / m2. the value of its diversity ranges from 1.02-1.11. while the value of uniformity obtained is 0.48-0.62 and the dominance value ranged from 0.14 to 0.17. Gastropod distribution pattern is uniform, type of mangrove that is found  is 6 species.Kata Kunci:Gastropoda, Comunity structure, Mangrove
POPULATION STRUCTURE Nerita lineata (GASTROPODS) IN MANGROVE FOREST OF SUNGAI CINGAM VILLAGE OF RUPAT SUB DISTRICT OF BENGKALIS REGENCY Jauharah, Nabilah; Nasution, Syafruddin; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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AbstractNerita lineata is one type of mollusc from the family Neritidae which has economic value. This research was conducted in Maret 2018 located at the mangrove forest of Sungai Cingam Village, Rupat Sub District, Bengkalis Regency. This research was aimed to determine the population structure N. lineata which cover density, distribution patterns and size distribution. This research used survey method and sampling location determined by purposive sampling. Measurement of water quality was done by in situ and ex situ which consist of physics and chemical parameters. Condition of N. lineata habitat was muddy sand, sandy mud and sandy. Sediment organic matter was medium and very high 2.97-30.58 %. The water quality parameters are still support for the life of the gastropods. The average density was 3.45 ind/m2. The highest density was in station II and the lowest in station I. The distribution pattern was grouping. The size of the gastropods found has a length 10-26 mm.Keyword: Population Structure, Density, Distribution Patterns, Nerita lineata.
THE RELATIONSHIP OF SEAWEED DENSITY WITH MACRO EPIZOOBENTHOS ABUNDANCE IN NIRWANA BEACH PADANG CITY OF WEST SUMATERA PROVINCE Sari, Santi Maya; Zulkifli, Zulkifli; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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ABSTRACTSeaweed community is ecologically refuge, foraging and orphanage for marine life, including macro epizoobenthos. The existence of a food source will affect the density of macro epizoobenthos in the aquatic ecosystem and important its influence on the structure of the food chain in the community of seaweed. This study was conducted in March 2018-April 2018 in Nirwana Beach of Padang City West Sumatra. The aims of research to find out : the density of each type of seaweed, the abundance of a macro epizoobenthos that lives on seaweed community and the relationship between the density of seaweed with a abundance of macro epizoobenthos. Sampling and measurement of water quality was done by using quadratic transect at 3 stations. The results of the study showed that the highest seaweed density has a value 451.4 tegakan/m2 and thehighest macro epizoobenthos abundance has a value 244 ind/m2in the area of seaweed that minimal activity and the lowestseaweedabundance has a value 169 tegakan/m2 and the lowestmacro epizoobenthos abundance has a value 27 ind/m2 in the area of seaweed around the population and settlement activities. The relationship of the density of seaweeds with the macro epizoobenthosdensity very strong i.e. y = 6.371 –0.553x; R² = 0.678; r = 0.82.Keywords: Seaweed Density, Macro Epizobenthos, Abundance, Nirwana Beach
GASTROPODS (MOLLUSCS) IN MANGROVE ECOSYSTEM AT CINGAM VILLAGE, RUPAT SUBDISTRICT, BENGKALIS REGENCY Situmorang, Noel GM; Nasution, Syafruddin; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract             The gastropods play an important role as bioindicators of environmental quality due to its living habits is relatively sedentary in one area for a long period and pass the impact of environmental changing. This research aims to recognise types, abundance, distribution of gastropods and the relationship organic content of sediment to the gastropods abundance. This research was held atn November 2017 in mangrove ecosystem Sungai Cingam Village, Rupat Subdistrict, Bengkalis Regency. The method used was survey method, meanwhile the determination of research points were measured by purposive sampling method. The research area was devided into 3 (three) stations where each station consists of 3 (three) transects. Each transect has 3 (three) plots measuring 3m x 3m. The results of research on mangrove ecosystem of Cingam River Village found 18 species of gastropods. Abundance of gastropods ranged from 13.44 to 16.19 individuals / m² with the highest abundance found in Station II with good mangrove forest condition Grouping is distribution formula of gastropods in mangrove ecosystem at Cingam Village. Organic content of sediment is around 6.96% to 8.98%.The highest organic content in Station II and the lowest in station III. The result of simple regression test obtained the equation y = 5.2158 + 1.2555x with correlation value (r) = 0.812 indicates strong connection between organic content of sediment and abundance of gastropods. Keywords : Abundance, Gastropods, Mangrove Ecosystem, Bengkalis
CORRELATION BETWEEN SEAGRASS DENSITY WITH GASTROPOD DENSITY IN THE WATERS OF PONCAN GADANG ISLAND SIBOLGACITY OFNORTH SUMATERA PROVINCE Yulinda, Emelda; Efriyeldi, Efriyeldi; Yoswaty, Dessy
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
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                                            Abstract                This research was conducted inSeptember 2017 inthe waters of Poncan Gadang Island, Sibolga City, North Sumatera Province. The purpose of this research was to analyze seagrass density, gastropod density and correlation between seagrass density with gastropod density.The method used was survey method. Water qualities  measured were salinity, temperature, transparancy, water pH and current velocity. A research was found 4 species of seagrass with highest density was found at station II(103 ind/m2) and lowest density was found at station III  (69.44 ind/m2).Gastropod consist of 9 species with highest density was found at station II(32.11ind/m2) and lowest density was found at station III(21.33ind/m2). The average value of diversity index was 1.65, the average value of uniformity index was 0.36 and the average value of dominance index was 0.44. That showed the diversity index was moderate, uniformity index was low and none of species that has dominance. Correlation between seagrass density with gastropod density showed strength relationship positive with r value was 0.709. Key Words : Gastropod, Seaggrass, Correlation, Poncan Gadang Island 
CHARACTERISTICS OF HABITAT AND BIVALVE DENSITY IN INTERTIDAL ZONE OF SUNGAI CINGAM VILLAGE OF RUPAT SUB DISTRICT OF BENGKALIS REGENCY OF RIAU PROVINCE Jamila, Nadratul; Nasution, Syafruddin; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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ABSTRACTBivalves are biota that live in the bottomof waters that can be used as bioindicators to predict water quality. This research was conducted in March-April 2018 which is located in intertidal zone of Sungai Cingam Village of Rupat Sub-district. Thisresearch aims to know the characteristics of habitat, species and density bivalvia. The method used in this research was survey method and determination of sampling location by purposive sampling. Measurement of water quality parameters was done in situ ie temperature, salinity and pH. Substrate type there are2 types of muddy sand and sandy mud. Organic matter is very low and very high. Suspended solids are low and high. Water quality parameters are still favorable for the life aquaticorganisms. Type of bivalves found there are 5 species of Meretrix meretrix, Polymesoda expasa, Pharella acutidens, Pilsbryoconcha exilis, Corbicula javanica. The highest density is at station 3 that is 5.89 ind/m2. The lowest density is at station 1 that is 4.89 ind/m2.Keywords: Habitat Characteristics, Species, Density, Bivalves.
SHORELINE CHANGEBY USING SATELLITELANDSAT IMAGEATRANGSANG BARAT DISTRICT OF MERANTI REGENCY RIAU PROVINCE Rifdayati, Putri; Galib, Musrifin; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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                                                 AbstrakShoreline changes isprocesses of accretion and abration, triggered due to natural and human activities factors in coastal areas.This research wasconductedat April 2018 in the coastal district of West Rangsang District of Meranti Islands.This research was aimed to determinewide and rate of shoreline changeby using satellite landsat imageat 2002 until 2018 with DSAS 4.3 (Digital Shoreline Analysis System). The research used surveymethod  and determination of sampling location by purposive sampling. Measurement of physical parameters is done in situ. The analysis of shoreline changes using 4 Landsat images (2002, 2007, 2015 and 2018) at DSAS approachs with the NSM (Net Shoreline Movement) for distance change and EPR (End Point Rate)for the rate of change. Shoreline changes in West Rangsang district are influenced by strong wave of Malacca Strait, during the last 16 years there has been accretion in seigomeng, melai, part of bantar andanak setatah village, with the highest average accretion rate of 8.88 m / year, mean distance change 138.1 m and the area of change 108 Hecktar and abrasion in the village of Permai, part of Bantar village and children setatah with average highest abrasion rate 4,93 m / year with mean distance change 76,6 m and area 1101 Hecktar. The wave energy is 2.94 until 4.9 Nm / m2 and the current velocity is 0.40 until 0.50 m/s with the flat beach tipe.Keyword: Shoreline Changes, Rangsang Barat, Accretion, Abration, Landsat image, DSAS
THE RELATHIONSHIP OF NITRATE, PHOSPHATE AND SILICATE CONCENTRATION WITH PLANKTONIC DIATOMS ABUNDANCE IN TELUK BUO WATERS BUNGUS TELUK KABUNG DISTRICT PADANGCITY WEST SUMATERA Luthfiandra, Syawfy; Nurrachmi, Irvina; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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ABSTRACT                The aims of study was to analyze the relationship of planktonic diatoms  abundance with the concentration of nitrate, phosphate and silicate from the Teluk Buoof waters. Placement of sampling location using purposive sampling that was by dividing the research location into four station with 3 point of sampling at each station in Teluk Buo waters which serve as research location. Field sampling was conducted in March 2018 and the observation and identification of planktonic diatoms were conducted in Marine Biology Laboratory of the Fisheries and Marine Faculty of Riau University. The results showed that nitrate concentration in Teluk Buo waters ranged from 0.0125 - 0.0333 mg/l, phosphate concentration ranged from 0.0413 - 0.0841 mg/l,and  silicate concentrations ranged from 0.0228 - 0.0354 mg/l. Nine species of plantonic diatoms were finded in Teluk Buo of waterswasBiddulphia sp, Isthimisp, Coscinodiscus sp, Flagilaria sp, Nitzschia sp, Navicula sp, Aulacoseira sp, Bacillaria sp, dan Cymbella sp. The average abundance of diatoms in these waters 181-250 ind/l. Regression test results, nitrate correlation value with diatomic abundance shows a relationshipwas positive, while the value of phosphate and silicate correlation with diatomic abundance shows a relationshipwas negative.           Key word : Planktonic Diatoms, Nitrate, Phosphate and Silicate, Teluk Buo Waters
SHORELINE CHANGEBY USING SATELLITELANDSAT IMAGEATRANGSANG BARAT DISTRICT OF MERANTI REGENCY RIAU PROVINCE Rifdayati, Putri; Galib, Musrifin; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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                                                 AbstrakShoreline changes isprocesses of accretion and abration, triggered due to natural and human activities factors in coastal areas.This research wasconductedat April 2018 in the coastal district of West Rangsang District of Meranti Islands.This research was aimed to determinewide and rate of shoreline changeby using satellite landsat imageat 2002 until 2018 with DSAS 4.3 (Digital Shoreline Analysis System). The research used surveymethod  and determination of sampling location by purposive sampling. Measurement of physical parameters is done in situ. The analysis of shoreline changes using 4 Landsat images (2002, 2007, 2015 and 2018) at DSAS approachs with the NSM (Net Shoreline Movement) for distance change and EPR (End Point Rate)for the rate of change. Shoreline changes in West Rangsang district are influenced by strong wave of Malacca Strait, during the last 16 years there has been accretion in seigomeng, melai, part of bantar andanak setatah village, with the highest average accretion rate of 8.88 m / year, mean distance change 138.1 m and the area of change 108 Hecktar and abrasion in the village of Permai, part of Bantar village and children setatah with average highest abrasion rate 4,93 m / year with mean distance change 76,6 m and area 1101 Hecktar. The wave energy is 2.94 until 4.9 Nm / m2 and the current velocity is 0.40 until 0.50 m/s with the flat beach tipe.Keyword: Shoreline Changes, Rangsang Barat, Accretion, Abration, Landsat image, DSAS