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Efriyeldi, Efriyeldi
Universitas Riau
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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
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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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
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
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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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 
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
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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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
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
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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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
SEASONAL DISTRIBUTION TOTAL SUSPENDED SOLID IN RANGSANG BARAT COASTAL WATERS MERANTI ISLAND REGENCY RIAU PROVINCE Nadida, Putri; Mubarak, Mubarak; 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

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AbtracTSS (Total Suspended Solid) is suspended materials has a negative impact on water quality because it reduces the penetration of sunlight into the water body, the turbidity of the water increases which causes growth disruption for the producer organism. This research was conducted in April 2018 in the West Rangsang waters of Meranti island regency. Aimed to determine the distribution of the concentration of TSS during the West and East season by using Landsat 8 Acquisition image analysis in March 2018 and Landsat 8 Acquisition june 2017. The research method is a survey and determination of sampling points by means of purposive sampling. TSS in situ analysis was carried out in the sea chemistry laboratory by gravimetric method, and analysis of image data using ER Mapper 7.0 and Notepad++ applications. Analiysis of insitu TSS data at each station was obtained with a range of 65.4 – 115.8 mg/l, from the results of image processing in the western season obtained TSS values of 0 – 109 mg/l and the results of image processing in the East season obtained TSS values of 0 – 120 mg/l. In general, the TSS distribution patterns generated by the image in the West seasen spread of TSS which leads close to the coast tends to be higher than the TSS distribution in the East season and vice versa the more towards the sea the TSS concentration is lower.The result of TSS data in situ with the result of image analysis in the West and East seasons of the stations in the West season in higher than in the East season.The result of current velocity measurement is 0.22 – 0.55 m/s, visibility 6.5 – 38 cm, turbidity 43.23 – 225 NTU, salinity 25.01 – 28 ppt and depth of 3.5 – 5.11 m. Keyword: TSS, Rangsang Barat, ER Mapper, Notepad++,Landsat.
ANALYSIS DISTRIBUTION OF MANGROVES IN THE BANTAN DISTRICT, RIAU PROVINCE USING SATELLITE IMAGE DATA LANDSAT 8 S. Pane, Rolis; Mubarak, Mubarak; 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

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ABSTRACTThis study aims to determine the distribution of mangroves and map the mangrove using satellite image data in the district of Bantan, Riau Province. Determination of the sampling location with purposive sampling with 3 station point, namely Jangkang Village, Selat Baru Village and Bantan Tengah Village, Bantan District. This research was carried out in April 2018 in Bantan District. Then analyzed in the Oceanographic Physics Laboratory Department of Marine Sciences, Riau University. The results of analysis of February 2018 landsat 8 image recording were 184.251 ha. The highest tree density in3 station points, namely Rhizophora apiculata, namely 500 ind/ha and the lowest tree density, Bruguiera gymnorrhizaand Xylocarpus granatum with 33.33 ind/ha. The highest seedling density wasRhizophora apiculata, wich is 2.000 ind/ha and the lowest density Bruguiera gymnorrhizawith 133.33 ind/ha. The number of mangrove species found were Rhizophora apiculata, Avicennia alba, Sonneratia ovata, Rhizophora mucronata, Xylocarpus granatum, and Bruguiera gymnorrhiza.      Keyword: image data, mangrove, Bantan District
Toxicity of Eucheuma cottonii seaweed extract with Methanol and N-Hexane solvents for Artemia salina larvae Kaharudin, Zakaria; Nurrachmi, Irvina; 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

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Abstract Seaweeds are very popular in the world of commerce, in science known as algae. Algae consists of four classes: Rhodophyceae (Red Algae), Phaeophyceae (Brown Algae), Chlorophyceae (Green Algae), and Cyanophyceae (Green-blue algae). Seaweed contains secondary metabolite compounds in the form of alkaloids or flavonoids that are useful as medicines and other purposes such as cosmetics and other industries. Seaweed is known to be rich in essential nutrients, such as enzymes, nucleic acids, amino acids, minerals, trace elements and vitamins A, B, C, D, E and K so it is also known as traditional medicine for cough, asthma, bronchitis, tuberculosis, abdominal pain, fever and rheumatism. This research was conducted in February - March 2018 in Sugie Village, Karimun Regency, Riau Islands Province, which aims to produce seaweed extract E. cottonii using Methanol and N-Hexane solvent and knowing LC50 value of Seaweed extract E. cottonii. Data were obtained by using BSLT (Brine Shrimp Lethality Test) method. The results of the study showed that the extract obtained from 5 kg of seaweed (wet weight) as much as 513 mL of concentrated extract. Seaweed extract with type E. cottonii was toxic to test animal A. salina. The LC50 value of E. cottonii extract dissolved in methanol was 40.2438 ppm.Keywords: toxicity, Extract of Seaweed, Desa Sugi 
ANALYSIS OF OIL CONTENT IN SEDIMENTS AND RELATIONSHIP WITH MAKROZOOBENTHOS ABUNDANCE IN SUNGAI PAKNING WATERS OF BENGKALIS REGENCY RIAU PROVINCE Rosiana, Kenny; Amin, Bintal; Efriyeldi, Efriyeldi
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           This research was conducted in January - February 2019. The purpose of this research was to analyze the oil consentration in sediments, species and abundance of macrozoobenthos, the relationship between the oil content in sediments and the abundance of macrozoobenthos. Four sampling stations with three replications in each station were surveyed. The results showed that the average oil consentration in sediments in the Stasions 1, 2 and 3 has exceeded the threshold level of the Department of Water Resources Quality Assurance / Quality Control Program which is> 1000 ppm which means that these stasions have been polluted by oil. Whilst at station 4 is still within safe limits.The types of macrozoobentos found in Sungai Pakning waters were Coenobita cavipes, Telescopium telescopium, Strigatella litterata, Cyclograpsus, Nassarius echinatus, Anadara granosa, Antoctodea, Littoraria scabra, Strigatella paupercula, Ancila, Cerithidea obtusa, and Nassarius olivaceus. The highest abundance was at Sei Selari port while the lowest abundance is around the tourist area of Pangkalan Jambi Mangrove Forest. Based on simple linear regression, the relationship between the oil content in sediment with the abundance of macrozoobentos y = 22.541-0.0191x with the coefficient of determination (R²) = 0.2437 and the value of the correlation coefficient (r) = 0.49. The value of r states a moderate relationship with a constant value b which is negative which indicated that the higher the oil content, the lower the macrozoobenthos abundance in sediment. Keyword: Sungai Pakning, Oil, Sediment, Macrozoobenthos
Distribution Pattern and Sex Ratio of Lokan Shellsfish (Batissa violacea) in the waters of the Padang Birik-birik Village, North Pariaman District, Pariaman City Adila, Melin; Tanjung, Afrizal; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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ABSTRACT This research was conducted in January 2019 at the Padang Birik Village, North Pariaman.The purpose of this research was to determine the pattern of distribution, abundance, sex ratio and frequency of lokan shellfish (B. violacea) size. The methods of this research was the survey methods,where the research station consists of 3 stations that werestation 1 in the mangrove area of Padang Birik-birik Village, station 2 was located in the estuary area close to the beach of Padang Birik -birik Village, station 3 was located adjacent to the coastal residential area in the village of Padang Birik –birik.Analysis was carried out in the Marine Biology Laboratory, University of Riau. The results of this study are the distribution pattern in the mangrove ecosystem clustered and the distribution pattern in the residential area were evenly distributed. The highest abundance was found in the mangrove ecosystem and the lowest was in residential areas. Sex ratio are generally male and female are balanced (1: 1.02). The most commonly found class of shellfish size 38,5-49,5 mm.Keywords: Lokan shells (B. Violacea), distribution patterns, abundance, sex ratio, frequency of size
Perkembangan Gonad dan Musim Pemijahan Kerang Sepetang (Pharella acutidens) di Ekosistem Mangrove Dumai, Riau ., Efriyeldi; Bengen, Dietriech G; Affandi, Ridwan
Maspari Journal : Marine Science Research Vol 4, No 2 (2012): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

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Abstract

ABSTRACTThis research aims to study the gonadal development and spawning seasonof “sepetang” clam (Pharella acutidens).The study was carried out  over 12 month period from November 2010 to October 2011 at  Dumai mangrove ecosystem.“Sepetang” clam samples were obtained from the Dumai mangrove ecosystem monthly at three station. The clam collected from plot 1 x 1 m2on quadrat  transect. Reproductive aspects such as sex ratio, gonadal development,gonadosomatic index (GSI), and oocytes diameter were studied.The result showed that “sepetang” clam can be sexed at the size more than 35 mm. No specimens hermaphroditism was observed. The male to female ratio was  1 : 1.12. Histological analysis indicated that P. acutidenshadfour distinguishable gonad development in male and female clam, namely early active, late active, ripe and partially spawned. Mean  oocyte diameter did not showed pattern monthly, except onMay to July, mean oocyte diameter small. Based on gonadal development, GSI and mean oocytes diameter, “sepetang” clam spawning continued throughout the year   and  peak spawning season my be on May-July. Keywords : “sepetang” clam, histological, sex ratio, gonadosomatic index ABSTRAKPenelitian yang bertujuan mengkaji perkembangan gonad dan musim pemijahan kerang sepetang (P. acutidens) telah dilakukan selama 12 bulan, mulai bulan November 2010 sampai Oktober 2011 di ekosistem mangrove Dumai.  Kerang sepetang diperoleh dari ekosistem  mangrove Dumai Barat pada tiga stasiun setiap bulan. Kerang dikumpulkan dari plot 1 x 1 m2 pada transek kuadrat. Pada penelitian ini dikaji nisbah kelamin, tahap perkembangan gonad, indeks kematangan gonad,  dan diameter oosit. Hasil penelitian menunjukkan bahwa kerang sepetang bersifat dioecious. Empat tahapan kematangan gonad ditemukan pada penelitian ini, meliputi aktif awal, aktif akhir, matang dan dikeluarkan sebagian. Rata-rata diameter oosit tidak menunjukkan adanya pola setiap bulan, namun pada bulan Mei-Juli diameter oosit lebih kecil. Berdasarkan tahap perkembangan gonad, indeks kematangan gonad, dan diameter oosit kerang sepetang memijah sepanjang tahun dan puncak pemijahan pada bulan Mei.Kata Kunci : kerang sepetang, histologi, nisbah kelamin, indeks kematangan gonad
Co-Authors ', Zefendra ', Zulkifli A. Rizki A.R. Ramadhan Abiyu Rohid Adila, Melin Afrizal Tanjung Ahmad Pasmuji Ahmadryadi_ahmadryadi Ahmadryadi_ahmadryadi Akmal Hawari Ali Mora Hadamean Siregar Alpian Alpian Andrean Nggara Imanuel Andreas Situmorang Andrew ST OS Andrito, Wahyudi Angelia E Bernike Zebua Ani Ani Anugrah Setiadari Harahap Aprizon Putra Aras Mulyadi Aras Mulyadi Aras Mulyadi Aras Mulyadi Arbianti, Purnama Ardhan Fadhlani Hasyim Arifin, Adani Fatahilal Arlius Arlius, Arlius Betari Erlinda Prayitno Bintal Amin Bona Juandi Bonawi Sihombing Burhan Marbun Cut Shifa Nedi D.H. Yanti D.J. Sari Dannes M. Khawarizmi David Raymond Sianturi Dea Lianov Dedi Afandi Defri Yoza Dela Haryani Delviana Dewi Despala Dessy Yosswaty Dessy Yoswaty Dessyka Febria Destriana Destriana Dietriech Geoffrey Bengen Dina Arniati Dinda Savita Doni Gunawan Tampubolon Dwi Julita Sari Elfis Suanto Elizal, Elizal Endi Setiadi Erick Palatema Ernanda Putra Dermawan Fazli Pasha Amri Febrianto Roby Mukhti Fella Ferona Fernando, Muhammad Zebi Fia Novianty Fitria Roza Friska Maulidah Gavion Roston Sitepu Gevi Meitasuri Hadi Sastranegara Halida Sisda Harahap Hardianto Andita Harry Leonardo Barutu Hendra Herrys V Silalahi Hesty Widyaningsih Iis Apriati Panggabean Ikhsan Setiawan Ilham hidayat Indra Bayu Pratama Inel Vivi Elvia Inka Wahyuni Irvina Nurrachmi Irwan Effendi Iskan Fami Jumaidi Joko Samiaji Judika Nursiani Sipahutar Jufri Jufri Jufri Jufri Junika Cecelia Putri Kaharudin, Zakaria Kartina ' Khairunnisa Khairunnisa Kristoper Aritonang Laksono Trisnantoro Langsana, Laila Lieng Lieng Lita Sari M. Fadhol Dwigantara M. Subkhan Riza Maria Erna Mela Oktari Mia Fatma R Mubarak Mubarak Mubarak Mubarak Mubarak Mubarak Muhamad Razid Muhammad Aulia Rahman Muhammad Dandy Syifa Pratama Muhammad Farhan Muhammad Rafsan Zain Muhammad Rizki Fadly Muhammad Rizky Rinaldi Muhammad Roif Alghani Muhammad Syarif Muhammad Zulkifli Mukhlis Alfarys Musrifin Galib Musrifin Galib Musrifin Galib Musrifin Galib Musrifin Ghalib Musrifin Musrifin Nababan, Sitty Mey Nabilah Jauharah Nadida, Putri Nadiyatus Sholihat Nadratul Jamila Nahdya Nasri Ananda Nasution, Muhammad Rasid Naufal Sidqi Nawari Nawari Noel GM Situmorang Nova Iman Sari Novia Suci Yanti Novri Ditama Syafni Nursyirwani, Nursyirwani Patwa Hadiyatma Paul Rozeki Sinaga Paulinus Putri Hanryani Putri Rifdayati R. Rahmita Rahmi Delima Putri Rahmi Susanti Raihan Zaki Raja Rahmita Ramadani Safitri Ramadhan, Muhammad Farizqy Rasoel Hamidy Reny Cristina Naibaho RIDWAN AFFANDI Ridwan Rafsyanjani Rifardi Rifardi Rifardi Rifardi Rifda Syofiana R Rifdayati, Putri Rizal Suardiman Pohan Romie Jhonnerie Ronal Kurniawan Rosiana, Kenny S. Pane, Rolis Safatriani Safatriani Sandy Bahari Santi Maya Sari Sihombing, Kelvin Siti Fatonah Siti Isnaini Siti Nur Sufaidah Sitorus, Tiroy Sofyan H. Siregar Sofyan Husein Siregar Sonya Marunjung P.Hsb Sri Murtin Sujianto Sujianto Sujianto Sujianto Sukendi Sukendi Suparno . Suzila ' Syafrizal Syafruddin Nasution Syahril Nedi Syawfy Luthfiandra T.B. Ginting Taat Mujaid Arifin Tania Hersa Tengku Mutia Smita Dwivayana Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Tri Prartono Vichi Apridianti Vivien Renata Wahyu Novra Wanda Wahyudi Wan Nabila Syafrhani Wanda Syahrian Wisnu Pramitha Wulan Cempaka Sari.S Y Desmerina Yahya Benardus Sihombing Yeli Hartuti Yohanna Siagian Yosua Afrianus P Yulinda, Emelda Yusni Ikhwan Siregar Zakaria Kaharudin Zientika Zulkifli ' Zulkifli Zulkifli Zulkifli Zulkifli ZULKIFLI ZULKIFLI