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Pengaruh Geomorfologi terhadap Pola Arus dan Pasang Surut Desa Putik Kecamatan Palmatak Kabupaten Kepulauan Anambas Provinsi Kepulauan Riau Zurma, Intan Alsyahkina; Mubarak, Mubarak; Elizal, Elizal
Jurnal Perikanan dan Kelautan Vol 22, No 2 (2017)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.22.2.40-48

Abstract

Penelitian ini dilaksanakan pada bulan Januari - Februari tahun 2017, di Desa PutikKecamatan Palmatak Kabupaten Kepulauan Anambas Provinsi Kepulauan Riau. Tujuanpenelitian ini adalah melihat pola arus dan pasang surut yang ditinjau dari fisikaoseanografi dan geomorfologi pantai, mengetahui pengaruh geomarfologi terhadaparus pantai daerah penelitian dan mendeskripsikan pola arus permukaan dipada saat airsedang naik pasang dan menuju surut. Metode yang digunakan adalah metode deskriptifyang bersifat eksploratif, metode purposive sampling yaitu penentuan lokasi untukpengambilan data, metode langrangian Pengukuran arus air. Hasil yang dapat disimpulkandari penelitian ini yaitu analisis bilangan formzahl diketahui bahwa tipe pasangsurut diperairan Desa Putik merupakan tipe pasang surut harian tungggal (diurnal tide)yang berarti dalam satu hari terjadi satu kali pasang dan satu kali surut dalam rentangwaktu 12 jam. Di perairan Desa Putik, pergerakan arus yang terjadi dipengaruhi olehpasang surut. Pola arus yang terjadi mengikuti perubahan pasang surut setiap harinya.Hutan mangrove yang berada dipulau mempengaruhi cepat dan lambat laju arus yangmasuk dan keluar. Kedalaman juga mengambil peran penting dalam pengaruh terhadapkecepatan arus daerah penelitian dimana semakin dangkal perairan maka arus yangmelewatinya semakin lambat, dan arus yang melewati perairan dalam dipengaruhi olehdensitas Berdasarkan analisis data dan Morfologi perairan daerah penelitian memberipengaruh yang sangat besar terhadap pola dan kecepatan arus.
Sebaran Klorofil-a Menggunakan Citra Satelit Landasat 8 di Kawasan Perairan Sungaitohor Kabupaten Kepulauan Meranti Mifdhol Hafli, Raja Diddin; Samiaji, Joko; Elizal, Elizal
Jurnal Perikanan dan Kelautan Vol 22, No 1 (2017)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.22.1.44-50

Abstract

Klorofil-a merupakan salah satu parameter oseanografi penting yang menentukan kelimpahandan sebaran populasi ikan. Penelititian ini bertujuan untuk mengetahuidaerah penangkapan ikan dan kesesuaiannya dengan sebaran klorofil-a di perairan.Penelitian telah dilaksanakan di perairan Sungaitohor, Kabupaten Kepulauan Meranti.Metode yang digunakan adalah survey. Penentuan titik sampling menggunakan metodepurposive sampling. Pengambilan sampel di lapangan telah dilaksanakan pada bulanFebruari 2017 dan analisis klorofil-a di laboratorium pada bulan Maret 2017. Hasilpenelitian menunjukkan terdapat 4 titik daerah penangkapan ikan (DPI) di perairanSungaitohor. Konsentrasi klorofil-a di perairan berdasarkan analisis laboratorium berkisar0,878 - 7,356 μg/l dan berdasarkan analisis citra satelit Landsat 8 berkisar 0,806 –9,541 μg/l. Validasi terhadap kedua data menunjukkan hubungan yang sangat kuatdengan koefisien korelasi (r) = 0,8634 dan tidak berbeda secara siginifikan. Hasilpenelitian menunjukkan tingkat kesesuaian DPI terhadap sebaran klorofil-a adalahsebesar 75 %.
Analisis Foraminifera Bentik pada Sedimen Terumbu Karang di Pulau Pandan Kota Padang Sumatera Barat Arinalhaq, Aminah; Rifardi, Rifardi; Elizal, Elizal
Jurnal Perikanan dan Kelautan Vol 22, No 1 (2017)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.22.1.1-8

Abstract

Foraminifera merupakan salah satu ordo dari protozoa yang bersel tunggal, hidup padalingkungan perairan terutama laut yang dapat dijadikan bioindikator kondisi lingkunganterumbu karang melalui indeks sederhana bernama FORAM Index. Penelitian inibertujuan untuk mengetahui tingkat kelayakan lingkungan terumbu karang berdasarkanforaminifera bentik dilihat dari nilai FORAM Index, Penelitian ini menggunakan metodesurvei pada pengambilan sampel sedimen dan pengukuran parameter lingkunganyang telah dilakukan pada bulan November 2016. Analisis foraminifera meliputi tahappreparasi sampel, kemudian sampel di jentik maksimal 300 individu, dengan dua kalipengulangan, sampel hasil penjentikan dikoleksi untuk identifikasi dengan melihatstruktur morfologi cangkang foraminifera. Hasil dari penelitian ini ditemukan 4 genusforaminifera bentik bioindikator kondisi perairan terumbu karang. Kondisi perairanterumbu karang di gugusan Pulau Pandan berdasarkan FORAM Index (FI) nilainyaberkisar antara 5,31 - 5,98, nilai ini memberi indikasi bahwa perairan sangat kondusifuntuk lingkungan pertumbuhan terumbu karang dicirikan oleh kehadiran Amphisteginanamun memperlihatkan kondisi lingkungan yang mulai menurun dan dicirikan olehkehadiran Quinqueloculina
FRACTION ANALYSIS OF SEDIMENT IN SELAT PADANG OF SUNGAI PAKNING RIAU PROVINCE Vera, Hamidah Dasno; Rifardi, Rifardi; Elizal, Elizal
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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AbstractThis research was conducted in January-February 2019. To determine the types of sediment constituents material and the environmental conditions of the Selat Padang waters based on the texture of surface sediment. The sediment was taken using grab sampler from three station, in which each station consists of three sampling point. The results showed that sediment types were in the waters of the Selat Padang indomination by sandy mud.Sediment parameters in the Selat Padang have an average diameter (Mz) of 5.2-5.33 Ø with the classification of medium silt, sortingthat is2.16-2.93 Ø with the classification is the disaggregated very bad, skewness (-0.12)-(- 0.48) Ø with classification very rough, kurtosis is 4.80 - 25 Ø with the classification very sharp once classified into platikurtik .The sediment compositions found were lithogeneous and biogeneous dominated bylithogenous, indicate the sediment comes from coastal erosion carried by ocean currents and then deposited in the bottom of the watersThe highest average value of organic materials contained in the station 1 (12.76%) located in Sei Selari port which is included in the classification of the medium organic matter indicate little supply of organic material from the sea to the coast. Keywords: Selat Padang, Sediment, Sediment Composition, Organic Material
Relation of Accumulated Sediment with Coral Reef Cover in the Lagoi Waters Bintan Regency Kepulauan Riau Province Sidabalok, Westy Yulia; Rifardi, Rifardi; Elizal, Elizal
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

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ABSTRACT This research was conducted in Lagoi Waters Banyan Tree Bintan Region to observe  effect accumulated sediment on coral. Three stations were selected forthe measurement of accumulated sediment was conducted using sediment traps which is apllied in the station of coral observation for 21 days. Point Intercept Transect (PIT) was used for the observation of coral reef. Regression analyses was applied clarify the correlation between accumulated sediment  and coral reef. The result of this study showed that the rate of accumulated sediment  in all observation stations ranged from 1.49 – 2.90 mg/cm2/day. The effect can be categorized as low to medium. The condition of coral reef in Lagoi Waters Banyan Tree Bintan Region is classified in good, indicated by  percentage of coral cover in observation stations ranged between 50-74%. The result of regression analysis showed that the accumulated has negative impact of life coral reef in Lagoi Waters Banyan Tree Bintan Region.Keywords : Accumulated sediment, Coral reef, Lagoi Waters.
RELATIONSHIP CONCENTRATION NITRATE, PHOSPHATE AND SILICATE WITH ABUNDANCE OF PLANKTONIC DIATOM IN THE WATERS OF PANGKALAN SESAI VILLAGE,DUMAI ,RIAU PROVINCE Putri, Zulherija; Nurrachmi, Irvina; Elizal, Elizal
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

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ABSTRACT Diatom is the most primary producer in marine waters and is abundant in surface areas that have sufficient light intensity and are rich in nutrients. This research was held on 12-24 May 2018 in the waters of Pangkalan Sesai village, Riau province. The study aims to analyze the concentration of nitrates, phosphate, silicate and analyze the abundance of planktonic diatoms as well as see the relationship of nitrate, phosphate and silicate against diatomic abundance of planktonic. The method used in this research is a survey method that is to perform observations and sampling directly, then proceed with the identification of planktonic diatoms samples in the laboratory. Water quality measurements are done in situ and ex situ consisting of parameters, physical biology, and chemistry. The concentration of nitrate ranged from 0.0367 – 0.0506 mg/l, phosphate concentrations ranged from 0.0840 – 0.1397 mg/l and silicate concentration of 0.0502 – 0.0692 mg/L. Diatom planktonic was found in the waters of Pangkalan Sesai village as many as 9 (nine) genera. Based on the results of multiple linear regression analyses obtained the value of the physical correlation (R) with the value 0.667 indicates that the relationship between nitric concentration, phosphate and silicate in diatoms is moderate. Then the value of R Square (R2) is worth 0.444 meaning the percentage of donations from the variable nitrate, phosphate and silicate against diatoms is 44.4% and the remaining 55.6% is influenced by other factors.Keyword: The abundance, nitrate, phosphate and silicate, Diatom, Pangkalan Sesai
ANALYSIS OF COAST LINE CHANGES USING LANDSAT IMAGERY AT TAPIAN NAULI DISTRICTCENTRAL TAPANULIREGENCYNORTH SUMATERA PROVINCE Amari, Tomi; Galib, Musrifin; Elizal, Elizal
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

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ABSTRACT Beach is a geographical which is be composed of sand and is located in the coastal area. The coastal area is the restrictions between coastal and sea. Beaches can change due to natural and human influences. The research was conducted in July 2018 at Tapian Nauli I, Central Tapanuli Regency, North Sumatera Province.The aim this research is to map and analyze the rate of shoreline change using Landsat Imagery. Imagery data downloaded from USGS site and then to analyze using ER Mapper and Arc Gis application.The results show that there has been a change in the coastline (abrasion and accretion). The current velocity range 0.09 - 0.12 m/s. The lowest of wave energy is 1.568 Nm / m² and the highest is 5.096 Nm/m². The lowest of abrasion is 0.538 m/year and the highest is 3.36 m/year. Keywords: Coastline, Tapian Nauli, Landsat Imagery, Abrasion, Accretion 
MAPPING OF MANGROVES CHANGE AREA AND THE DENSITY OF MANGROVE IN ANAK SETATAH VILLAGE SUB-DISTRIC OF RANGSANG BARAT DISTRICT OF KEPULAUAN MERANTI RIAU PROVINCE Harahap, Halida Sisda; Elizal, Elizal; 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

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ABSTRACT This research was conducted in February 2019 in Anak Setatah village, Sub-distric of West Rangsang, District of Kepulauan Meranti, Riau Province and was aimed to find out the change of area and the density of mangrove this time. The research was conducted by survey method. The quantitative method was used on the change of mangrove forest area observation. The result of image data processing showed that mangroves area in Anak Setatah Village had decrease of area in 2006-2011 about 3.77 ha and there was an increase of area in 2011-2016 about 116.88 ha. The density of mangrove in Anak Setatah Village has the tight and medium density type. According to Mangrove Quality Standards, the density are still in Good category.  Key words : Mangrove, Change of Area, Density, Anak Setatah
Macrozoobenthos Community Structure in Mangrove Forest at Purnama Urban Village, Dumai City Sihotang, Yula Elawati; Nasution, Syafruddin; Elizal, Elizal
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 The structure of the macrozoobenthos community in the mangrove forest area of Purnama Village, Dumai City can be used as a basis for knowing the environmental conditions of the waters in the mangrove forest of Purnama Village, Dumai City. This research was conducted in the mangrove forest area of Purnama Village, Dumai City in April 2018. The method used was the survey method, sampling was done by purposive sampling. The research location was divided into three stations and each station was divided into three transects, with each transect placed three 1 m2plots. The results showed an abundance of macrozoobenthos ranging from 7.56-10.00 Ind / m2, obtained 3 classes namely Gastropoda, Crustacea, and Bivalva consisting of 12 species namely Cassidula aurisfelis, Cerithidea obtuse, Littorina melanostoma, Nerita lineata, Nerita violacea, Littorina scabra , Chicoreus capucinus, Indothais gradate, Nassarius candens, Uca sp, Polymesoda expansa, Indothais malayensis and the most commonly found are Nerita lineata while the diversity index ranges from 2.79 to 2.98, the uniformity index ranges from 1.09 to 1.33, index dominance ranged from 0.15 to 1.16 and distribution patterns ranged from 2.53 to 3.32. The results of measurement of environmental parameters are still within the optimal limits for the life of marine biota and the dominant type of sediment is muddy. It was concluded that moderate species diversity, balanced uniformity and no dominant species were found while the distribution pattern was grouped. Keywords: Community Structure, Macrozoobenthos, Mangrove, Dumai City
THE INFLUENCE OF WIND, TEMPERATUR AND RAINFALL ON THE CATCH OF FISHERMEN IN FISHING PORTOF BATAM CITY Sihotang, Nico Darminto; Galib, Musrifin; Elizal, Elizal
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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ABSTRACTThe fish catches of fishermen was strongly influenced by wind, temperature and rainfall. This research was conducted in December 2018 – February 2019 in the Barelang Fishing Port Batam City. The purpose of this research are to know the patterns of changes in wind, temperature and rainfall that occur in Batam City and the influenced on fishermen fish catches in Batam City and to determine the good time/season for fishing operations. The research used survey method, primary data obtained using questionnaires and secondary data obtained from Barelang Fishing Port, BMKG Hang Nadim amd Batam City Fisheries Service. The hypothesis was tested using a simple regression test. Wind, temperature and rainfall data were analyzed using Microsoft Excel 2010. The results showed that the relationship between wind speed with fishermen fish catches is opposite each other, temperature with fishermen fish catches is directly proportional and intensity of rainfall with fishermen fish catches is opposite each other. The good season to catch fishing is in the transisition season 2 (October to November) and transition 1 (March to May). Analysis of climate change trends in Batam City shows that the average of wind speed tends to decrease every year, the average of temperature tends to increase every year and intensity of rainfall tends to decrease every year.  Keywords :Catch, Wind Speed, Temperature, Intensity of Rainfall, Climate             Change