Efriyeldi Efriyeldi
Unknown Affiliation

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

Karakteristik Biologi Populasi Kerang Sepetang (Pharella acutidens) di Ekosistem Mangrove Dumai, Riau Efriyeldi Efriyeldi; Dietriech G Bengen; Ridwan Affandi; Tri Prartono
Berkala Perikanan Terubuk Vol 40, No 1 (2012): Februari 2012
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (833.315 KB) | DOI: 10.31258/terubuk.40.1.%p

Abstract

Characteristic of population biology of the “sepetang” clam has been studied inDumai mangrove ecosystem from November 2010 to October 2011. This researchwas to study the patterns of the population growth, mortality and recruitment ofthe clam P. acutidens. Sampling was monthlyfrom plot 1 m x 1 m quadratictransects. The result showed that growth pattern of P. acutidens was negativeallometric with asymptotic length (L∞) 92.71 mm.The annual growth coefficient(K) and total mortalitywere 0.59 and 1.87 per year, respectively. The naturalmortality was probably related to environmental condition. The recruitmentoccurred every month, the peaks occurred on April (15.93%) and August(13.16%).
THE RELATIONSHIP OF SEAWEED DENSITY WITH MACRO EPIZOOBENTHOS ABUNDANCE IN NIRWANA BEACH PADANG CITY OF WEST SUMATERA PROVINCE Santi Maya Sari; Zulkifli Zulkifli; Efriyeldi Efriyeldi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

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
THE CONDITION OF VEGETATION MANGROVE IN BUNSUR VILLAGE SUNGAI APIT DISTRICT OF SIAK REGENCY RIAU PROVINCE Muhammad Rafsan Zain; Efriyeldi Efriyeldi; Aras Mulyadi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abtrac Mangroves are one of the important ecosystems in coastal areas that grow in places that are still affected by tides. This research was conducted in April 2018 in Bunsur Village, Sungai Apit District, Siak Regency. The purpose of this study is to determine the condition of the mangrove ecosystem in Bunsur Village which is seen from the density of mangroves, environmental quality indicators and the ecological index of the mangrove community. The method used in this research is survey method and the research used 3 stations. Environmental physics parameters were measured in situ, the results obtained in the research location were temperature 30-32 ° C, salinity 8-29 ‰, and pH 5-6. Data analysis was described in the form of tables and graphs of the environment including Avicennia alba, Bruguiera sp., Lumnitzera racemosa, Nypa fruticans, Rhizophora apiculata, Sonneratia alba, Xylocarpus granatum, and the density of mangrove farm 1 was 52566.67trees / hectare, station 2 was 55655.56 trees / hectare, station 3 was 22244.44 trees / hectare from the results of these densities on all mangrove stations classified as good (very dense) criteria. Indicator value of mangrove environmental quality at stations 1.2, and 3 ranged from 62.81 to 80.31% classified as high environmental quality.The value of the community ecological index sought includes diversity in which the results obtained in the three stations are 1.14-1.42 classified as low species. Uniformity index values ranged from 0.49 to 0.78, where at stations 1 and 3 are classified as balanced individual distributions and station 2 is classified as unbalanced individual distribution. Dominance index values ranged from 0.45 to 0.89, where station 1 was classified as low species dominance, station 2 was classified as medium species dominance, station 3 was classified as high species dominance. Keyword: Mangrove Vegetation Conditions, Sungai Apit
COMUNITY STRUCTURE OF GASTROPODS ON MANGROVE AREAS OFSUNGAI RAWA VILLAGE SUBDISTRICT SIAK REGENCY OF RIAU PROVINCE Mukhlis Alfarys; Efriyeldi Efriyeldi; Syafruddin Nasution
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract The class of gastropods is the largest class in Phylum Molluska. One of the habitat that is inhabited 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 Sungai Rawa Village Subdistrict Siak Regency, in October 2018. The purpose of this research is to know the structure of gastropod community which includes: type, density, diversity, uniformity, dominance, distribution pattern. The characteristics of environmental as sediment type and water quality is considered important for support the research data. The research method used is the survey method where sampling using line transect method was done on 3 stations. 15 gastropods species found in mangrove areas with the value of gastropod density obtained at each research station ranged from6.333-10.667 ind/ha. The value of its diversity index ranges from 2,44-3,07. while the value of uniformity obtained is 0,81-0,86 and the dominance value ranged from 1,29 to 1,95. Characteristics of mangrove area in Sungai Rawa village is good.Kata Kunci:Gastropoda, Community structure, Characteristics
ANALYZE RELATIONSHIPS MANGROVE DENSITY AND GASTROPOD ABUNDANCE IN KAYU ARA PERMAI VILLAGE SUNGAI APIT SUBDISTRICT SIAK DISTRICT RIAU PROVINCE Wanda Syahrian; Zulkifli Zulkifli; Efriyeldi Efriyeldi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACT The research was conducted on August 2017 in mangove ecosystem of Kayu Ara Permai Village Sungai Apit Sub-district Riau Province. This research aims to analyze mangrove density, the type and abundance of gastropod and relationships between mangrove density, organic content in sediment and gastropod abundance. The method used in this research was survey method. Sampling mangrove species was conducted with line transect plot and sampling organic content and gastropods  by using 1 x 1 m2 quadrant plot. The result showed that mangrove density in Kayu Ara Permai varied from 1733-3533 ind/ha. The gastropod abundance varied from 3.67-13 ind/m2, organic content in sediment varied from 0.20-0.13%, diversity index (H’) 0.5-1.12, dominance index (C) 0.52-0.69  and evenness index (E) 0.24-0.52. Relationships between mangrove density and gastropod abundance were 43.20%, relationships mangrove density and organic content in sediment were 18.65%. While relationships between organic content and gastropod abundance were 15.79%.Key Words: Kayu Ara Permai, mangrove density, organic content  and gastropod abundance
THE RELATHIONSHIP OF NITRATE, PHOSPHATE AND SILICATE CONCENTRATION WITH PLANKTONIC DIATOMS ABUNDANCE IN TELUK BUO WATERS BUNGUS TELUK KABUNG DISTRICT PADANGCITY WEST SUMATERA Syawfy Luthfiandra; Irvina Nurrachmi; Efriyeldi Efriyeldi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

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
PENGARUH ENVIRONMENTALISME DAN PERILAKU MASYARAKAT TERHADAP TINGKAT KESEHATAN DI WILAYAH KERJA PUSKESMAS PUJUD Dessyka Febria; Dedi Afandi; Efriyeldi Efriyeldi
Jurnal Ilmu Lingkungan Vol 10, No 1 (2016): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.10.1.p.15-20

Abstract

The lack of the enviromentalism, the behavior of clean and the healthy life can lead to health problems such as desease based on the environment is ISPA and diarrhea. This study is aimed to analyze the effect of the environmentalism and the public behavior on the level of health in Puskesmas Pujud area. This study is quantitative analysis in of Cross Sectional. This study was conducted on may 2015, data is taken using a questionnaire. Analysis of data used on this study is statistical analysis of corelation Rank Spearman and F test with level of significant 0,05. The result of the study is showed the environmentalism with r-value = 0.864 which the environmentalism is positively correlated very strongly on the level of health. Than, the public behavior with r-value = 0.873 which the public behavior is positivley correlated very strongly on the level of health. For statistical hypothesis testing is showed F count is hinger than F tables. The environmentalism and the public behavior is affect of the level of health in Puskesmas Pujud area.
ABUNDANCE AND DISTRIBUTION PATTERNS OF GASTROPODA ON MANGROVE FORESTIN THE AREA OF DESA ANAK SETATAHDISTRICTS RANGSANG BARAT KEPUALAUAN MERANTI REGENCY RIAU PROVINCE Inka Wahyuni; Aras Mulyadi; Efriyeldi Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACT             This research was conducted in April 2019 with the aim of finding out the abundance and distribution patterns of gastropods in the mangroves of Anak Setatah Village.Determination of the sampling location is done by purposive sampling, which is to determine the sampling point intentionally based on certain objectives.Sampling was carried out in the mangrove area of Anak Setatah Village with different mangrove forest conditions and gastropod identification was carried out at the Marine Biology Laboratory, Faculty of Fisheries and Maritime Affairs, Riau University.The results showed that the total number of species found were 8 gastropod species.In the mangrove mono species 4 gastropod species were found and the mangrove multi species species were found 8 gastropod species, while the highest gastropod abundance was found in the mangrove mono species at observation station IV, which was 23.16 ind/m2 and the lowest was in the multi species mangrove area. at observation station 1 which is 5.36 ind/m2. Key word :Abundance, Distribution Patterns, Anak Setatah Village
ABUDANCE AND DISTRIBUSION PATTERN OF GASTROPOD AT INTERTIDAL ZONE KALANGAN COAST TAPANULI TENGAH SUMATERA UTARA PROVINCE Judika Nursiani Sipahutar; Efriyeldi Efriyeldi; Aras Mulyadi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACTCoastal ecosystems are the confluence of land and sea that are still influenced by sea characteristics such as tides, sea breezes and salt intrusion and sedimentation processes.The intertidal zone is part of a coastal ecosystem in which many marine biota live such as the gastropods of the mollusk phylum. The purpose of this study was to determine the type and abundance as well as the distribution pattern of gastropods in the intertidal zone of Kalangan Beach in Central Tapanuli, North Sumatra. This research was conducted in April 2019. From the results of the study it was found that in the intertidal zone of the Kalangan Beach 10 gastropods were found, namely Clypeomorus sp, Littorina sp, Polinices, Clypeomorus bifascita, Nassa francolinus, Morula granulata, Phasianella solida, Clypeomorus batillariaeformis, Cerithiium sp,and Faunus ater. At station I with an abundance of 5 ind / m2 which is relatively low. At station II with an abundance value of 2 ind / m2 classified as very low, and at station III with an abundance value of 43 ind / m2 classified as abundant. The distribution pattern of gastropods in the intertidal zone of Kalangan Beach at each station is clustered. Keywords:gastropods, abundance, distribution pattern 
SHORELINE CHANGEBY USING SATELLITELANDSAT IMAGEATRANGSANG BARAT DISTRICT OF MERANTI REGENCY RIAU PROVINCE Putri Rifdayati; Musrifin Galib; Efriyeldi Efriyeldi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

                                                 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