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Elizal, Elizal
Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Public Health Social Sciences Other

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Analysis of Microplastics on Sediments in the Waters of Selat Panjang of Tebing Tinggi Subdistrict, Meranti Islands Regency, Riau Province Pasaribu, Ridwan Saiful Basri; Nedi, Syahril; Elizal, Elizal
Jurnal Natur Indonesia Vol. 19 No. 2 (2021): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.19.2.51-56

Abstract

The study was conducted from March to May 2021 which aims to identify the types, abundance of microplastics and compare the abundance of microplastics between stations in the waters of the Long Strait of High Cliff Subdistrict. Survey methods are applied and PVC pipes are used to collect sediment samples from three different stations with three sampling points at each station. The types of microplastics found are fragments with the most jumblah with film and fiber. The most widely found types are fragments, followed by film and fiber. The abundance of microplastics at Tanjung Harapan Port (5900.00 partkels /kg of dry sediment) is higher than the mouth of the Dorak coastal river (5306.67 partkels/kg of dry sediment) and Banglas Village Mangrove Ecotourism (4120.00 partikels/kg of dry sediment). The results showed that the abundance of microplastics between stations differed significantly. Microplastic differences based on further independent test samples t-test showed that each station compared to mangrove ecotourism area will be significantly different, while between Tanjung Harapan Port and the mouth of the Dorak coastal river showed no significant difference
The Relationship of Nitrate, Phosphate, and Silicate Concentrations to The Abundance of Planctonic Diatoms in Carocok Tarusan Waters, Pesisir Selatan District Yandra, Yoli; Nedi, Syahril; Elizal, Elizal
Journal of Coastal and Ocean Sciences Vol. 3 No. 1 (2022): January
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was carried out from December 2020 to January 2021 in Carocok Tarusan Waters, Pesisir Selatan Regency, West Sumatra, which aims to analyze the concentration of nitrate, phosphate and silicate, calculate the abundance of planktonic diatoms and analyze the relationship between the content of nitrate, phosphate and silicate to the abundance of planktonic diatoms present. in the waters of Carocok Tarusan, Pesisir Selatan Regency. The research method used in this study is a survey method while the determination of research stations is carried out by purposive sampling. The results showed that the average nitrate concentration was 0.7792– 0.8757 mg/L, the average phosphate concentration was 1.7220– 2.0833 mg/L and the silicate concentration was 0.6287 - 0.6835 mg/L. Planktonic diatoms found in Carocok Tarusan waters contained 13 species from 3 classes, namely Bacillariophyceae, Chaetoceraceae and Coscinodiscophyceae. The results of the calculation of the abundance of planktonic diatoms are 17.82 – 20.72 Ind/L. The test conducted to determine the relationship of nitrate, phosphate and silicate to the abundance of planktonic diatoms was a simple linear regression test. Based on the results of the linear regression test, it is known that the effect of nitrate concentration on the abundance of planktonic diatoms in Carocok Tarusan waters is 00.81%, while the remaining 99.19% is influenced by other factors, for the effect of phosphate concentration on the abundance of planktonic diatoms in Carocok waters. Tarusan is 8.81%, while the remaining 91.19% is influenced by other factors and for the effect of silicate concentration on the abundance of planktonic diatoms in Carocok Tarusan waters as much as 2.97%, while the remaining 97.03% is influenced by other factors.
Water Brightness Profile Based on Tidal Current in Dumai River Estuary, Dumai City, Riau Province Aristi, Fiona; Rifardi, Rifardi; Elizal, Elizal
Journal of Coastal and Ocean Sciences Vol. 2 No. 3 (2021): September
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was conducted in August 2020 in the Dumai River Estuary, West Dumai District, Dumai City, Riau Province. The purpose of this study was to determine the brightness of the waters and its distribution in the waters of the Dumai River estuary. The research method used is a survey method with the determination of the sampling point using purposive sampling method at tide towards low tide and low tide towards the tide. The map is heavy using ArcMap 10.4 software and interpolated using IDW (Spatial Analyst) tools. The results showed the brightness at tide to low tide, which is around 23.5-129 cm with an average brightness of 84.3 cm. Brightness at at low tide to high tide is around 35-127.5 cm with an average brightness of 88.15 cm. Based on the map, the brightness of the waters of the Dumai River Estuary is low at the mouth of the estuary and high in the part that leads to the sea.
Analisis Kerentanan Pesisir di Kabupaten Pesisir Selatan Provinsi Sumatera Barat Novriadi, Yoga; Mubarak, Mubarak; Elizal, Elizal
Ilmu Perairan (Aquatic Science) Vol. 10 No. 1 (2022): Maret
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Penelitian dilakukan di Kabupaten Pesisir Selatan Provinsi Sumatera barat pada bulan Oktober – November 2019. Tujuan dari penelitian ini adalah untuk mengetahui perubahan garis pantai dan tingkat kerentanan pesisir. Data primer diperoleh dari pengamatan lapangan dan data sekunder dari sumber terkait. Hasil penelitian menunjukkan wilayah ini mengalami akresi yang berkisar (1->2,1m/th) dan erosi (-1-<-2 m/th). Indeks kerentanan pesisir umumnya sangat rendah, namun di beberapa titik mengalami kerentanan sangat tinggi karena sangat terpapar terhadap gelombang dan adanya aktivitas antropogenik yang tinggi, sehingga mengakibatkan terjadinya erosi hingga 65% selama 10 tahun terakhir.
Analisis Perubahan Abrasi dan Akresi serta Karateristik Sedimen di Pantai Apar Pariaman Romauli, Junita; Rifardi, Rifardi; Elizal, Elizal
Ilmu Perairan (Aquatic Science) Vol. 13 No. 2 (2025): Juli
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jipas.13.2.267-276

Abstract

Perubahan garis pantai akibat abrasi dan akresi merupakan fenomena dinamis yang dipengaruhi oleh faktor oseanografi dan aktivitas manusia. Penelitian ini bertujuan untuk menganalisis perubahan abrasi dan akresi serta karakteristik sedimen di Pantai Apar, Pariaman, guna mendukung upaya pengelolaan wilayah pesisir yang berkelanjutan. Penelitian dilaksanakan pada Januari 2024 dengan menggunakan metode survei in situ untuk memperoleh data arus, gelombang, dan sedimen, serta analisis citra satelit Landsat selama 20 tahun (2004–2024) menggunakan Digital Shoreline Analysis System (DSAS) dengan pendekatan End Point Rate (EPR). Hasil menunjukkan bahwa pada periode 2004–2014, terjadi akresi tinggi di seluruh area penelitian dengan rata-rata laju 4,51 m/tahun. Namun, pada periode 2014–2024 terjadi dominasi abrasi, dengan rata-rata laju abrasi sebesar -2,38 m/tahun. Secara keseluruhan, dalam rentang 20 tahun, garis pantai mengalami akresi sedang dengan rata-rata perubahan 0,737 m/tahun. Sedimen di Pantai Apar didominasi pasir kasar dan sedang (0,23–0,9 Ø), dengan sortasi buruk hingga sedang dan skewness mengarah ke partikel halus. Kecepatan arus berkisar 0,08–0,26 m/s dan tinggi gelombang 0,25–0,51 m, termasuk kategori rendah. Kondisi oseanografi ini mendukung akumulasi sedimen dan akresi di sebagian besar wilayah pantai. Hasil penelitian ini dapat dijadikan dasar dalam perencanaan mitigasi abrasi serta pengelolaan pantai yang berkelanjutan.
Analisis Hubungan Bahan Organik dengan Kelimpahan Kepiting Uca spp pada Zona Intertidal Desa Concong Dalam Kabupaten Indragiri Hilir Irfandi, Muhammad Adri; Nasution, Syafruddin; Elizal, Elizal
Ilmu Perairan (Aquatic Science) Vol. 13 No. 2 (2025): Juli
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jipas.13.2.217-225

Abstract

Penelitian ini dilakukan pada bulan Januari – Februari 2024 di Desa Concong Dalam, Kecamatan Concong, Kabupaten Indragiri Hilir, Provinsi Riau. Penelitian ini bertujuan mengetahui kandungan bahan organik total sedimen, jenis kepiting Uca spp, kelimpahan kepiting Uca spp, dan hubungan kandungan bahan organik total sedimen dengan kelimpahan kepiting Uca spp. Metode yang digunakan dalam penelitian ini adalah metode survey. Penentuan stasiun dalam penelitian ini dengan teknik purposive sampling. Penelitian ini meliputi 4 stasiun pengamatan dengan masing-masing stasiun ditetapkan 3 transek garis. Hasil perhitungan kandungan bahan organik total sedimen berkisar 8,56-12,35 %. Jenis kepiting Uca sp yang didapatkan terdiri 6 (enam) spesies yaitu U. dussumieri, U. coarctata, U. coarctata flamula, U. forcipata, U. rosea, U. arcuata. Kelimpahan kepiting Uca sp berkisar berkisar 6,37-8,89 ind/ . Hubungan kandungan bahan organik total sedimen dengan kelimpahan kepiting Uca sp diperoleh persamaan Y = 1,3542 + 0,5962x, memiliki hubungan yang positif dengan koefisien korelasi (r) = 0,4052, semakin tinggi bahan organik maka semakin tinggi pula kelimpahan kepiting Uca spp
Analysis of Suitability and Supporting Capacity of Sasak Beach Tourism Pasaman Barat Andriani, Fikri; Rifaldi, Rifardi; Elizal, Elizal
Jurnal Perikanan dan Kelautan Vol. 27 No. 1 (2022): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was conducted in February 2021 at Sasak Beach, West Pasaman Regency, West Sumatra Province, aiming and the benefit of this study is to examine the suitability of beach tourism in Sasak Beach based on biophysical aspects, including the precept of the community to ecotourism activities in Sasak Beach, as well as analyze the supporting factors of its activities. The method used in the study is a method of surveying directly to the research site and measuring the necessary data qualitatively and quantitatively The goal is to get information about Sasak Beach and the perspective of tourists on the development of marine ecotourism at the research site. Sasak Beach has a specific feature with the planting program of a thousand pine trees. This beach has great potential and opportunities to be developed as a beach tourism area The highest conformity values are found in station I, and the lowest are in stations II and III. This value makes Sasak Beach can be used as a marine ecotourism.
Analysis of Shoreline Changes Period 1991 – 2001 Pasumpahan Island, Padang, West Sumatera Sanora, Fifi; Rifardi, Rifardi; Elizal, Elizal
Jurnal Perikanan dan Kelautan Vol. 28 No. 1 (2023): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Pasumpahan Island is an area that is affected by currents, waves and sedimentation processes because it is directly adjacent to the Indian Ocean and the mouth of the Pisang River, this causes changes in the coastline in the form of abrasion and accretion on the island. This study aims to determine the effect of currents, waves, and sedimentation processes on the rate of change of the shoreline for 10 years (1991-2001) on Pasumpahan Island. This research was conducted in March 2022 on Pasumpahan Island, Padang City, West Sumatra Province. The method used is a survey method to obtain primary data including current speed, heightwaves and sediments. The study method used is a quantitative method with a multi-temporal satellite imagery approachusing the Digital Shoreline Analysis System (DSAS) software with the End Point Rate (EPR) approach. The results of the analysis of current velocity values ​​ranged from 0.21-0.28 m/s, wave heights ranged from 0.24-0.55 m, the average diameter of the sediment ranged from 0.83-1 Φ. The results of image data processing show that there has been a change in the shoreline in the form of low category abrasion (0.4 m/year), stable (1.42 m/year), and accretion (3.07 m/year) on Pasumpahan Island.
Analysis of Inundation Area as an Impact of Sea Level Rise in Dumai City, Riau Province Situmorang, Ally Wibowo; Mubarak, Mubarak; Elizal, Elizal
Jurnal Perikanan dan Kelautan Vol. 28 No. 2 (2023): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was carried out in December 2021-January 2022 in Dumai City District, Riau Province. The purpose of this study is to determine the rate of sea level rise based on analysis of tide data from 2001-2021 and to predict inundation areas in the next 20 years. This research method is a descriptive survey using remote sensing as an additional tool to show the results. Acquisition needs are in the form of primary data (land use and tide data) and secondary (slope data, elevation, land use, and tide data). These parameters are processed and analysed to describe the extent of the inundation by displaying a map of the City of Dumai. The results showed that the waters of Dumai City have a Formzhal number of 0.5, which means that the water area is classified as a mixed tide, semi-diurnal prevalence, with a sea level rise of 2.003 cm/year. Then, the numbers used to predict the height of sea level rise in the next 20 years are 0.973 m each. Furthermore, sea level height was analyzed to obtain the inundation area for the next 20 years, it turns out that the inundation area each year is 11.89 ha.
Analysis of Sea Surface Temperature Distribution and Its Relation to Rainfall in Pariaman City Seven, Diko Alafchan; Mubarak, Mubarak; Elizal, Elizal
Jurnal Perikanan dan Kelautan Vol. 30 No. 2 (2025): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.30.2.245-251

Abstract

This research was conducted in February 2024. The research locations of Pariaman City waters include Angso Duo Island, Tangah Island, Ujung Island, and Kasiak Island. The research objectives were to determine the distribution of sea surface temperature, average rainfall, and the relationship between sea surface temperature and rainfall. The survey method, direct observation at the research location, was used. The results of this study indicate that the sea surface temperature in the study area in the western season (December - February) ranges from 30.70- 30.430C. The sea surface temperature in the first transitional season (March-May) ranges from 30.06-31.090C. The sea surface temperature in the east season (June - August) ranges from 30.46- 30.90C. The sea surface temperature in the second transitional season (September - November) ranges from 30.08-30.120C. The maximum rainfall in Pariaman City is in the form of rainfall. The maximum rainfall in Pariaman City occurs in November, with an average rainfall of 444 mm, while the minimum rainfall occurs in February, with an average rainfall of 235 mm. The results of the correlation analysis of sea surface temperature with rainfall are weak and strong correlation categories. In March, it produces an "r" value of 0.303, a weak category, and a coefficient of determination (R2) of 0.092 or 9.2%. In October, it produces an "r" value of o.686, a strong category, and a coefficient of determination (R2) of 0.470 or 47%.
Co-Authors ', Zefendra Aditya, M Afrizal Tanjung Al-Izhar, Muhammad Amari, Tomi Andre Febriadi Zaryano, Andre Febriadi Andrian, Fikri Andriani, Fikri Anggie Agustian Apriani, Cici Aras Mulyadi Arbaeyah &#039; Ardiana, Eka Arif Teguh Satria Arinalhaq, Aminah Aristi, Fiona Armanda Armanda Armanda, Armanda Armani, Shanya Puthi Athhary, Dhiva Danaya Azmiada, Zela Azrihaironi, Azrihaironi Baruza Arrizqa Bayu Putra U Irawan Bintal Amin Cahyani Fitrah Tanjung Cici Lestari Manurung Cut Intan Zahara Darul Amin Debby Irfandinata Deddy Bahagia Manik Dedek Susanto Dedi . Dedi Muksin Pane, Dedi Muksin Desmarina, Y. Despela, Despela Dessy Yoswaty Dewita Dewita Dimas Agung Guntara Efriyeldi, Efriyeldi Elfis Suanto Fadhil, Yozi Ahmad fajar sidik Febrianto Roby Mukhti Fertikasari, Indah Fikri, Ishlahul Gaol, Amelia Risnauli br. Lumban Ginting, T.B. Giovano Aldizia Gusmanti, Afni Gustasya, Yosy Halida Sisda Harahap Hamidah Dasno Vera Handoyo, Edi Hari Mulyadi, Hari Harif, Ichwanul Hutabarat, Mona Uli Hutapea, Yeru Daniel Octryan Ibad, Rizky Nur Ide Rival Dianta Sitepu Ikhsan Setiawan Ilham Ilahi Indah Fertikasari Irfandi, Muhammad Adri Irvina Nurachmi Irwan Effendi Irwan Irwan Joko Samiaji Juliamanda, Ghina Juliando Saputra Khairil Ihsan Khoiriyah, Latifatul Lulu Mayna Nabilla Mahzwan Putra Pratama Manik, Everson Manik, Yolanda Marlan Tamba, Marlan Masyurah, Dzaitul Metry, Gita Mifdhol Hafli, Raja Diddin Moulidia, Candri Mubarak Mubarak Mubarak Mubarak Mubarak Mubarak Muhammad Sofyan Musrifin Galib Musrifin Ghalib Mutia, Safira Nababan, Bastian Vepry Odynata Nabila Afifah Azuga Nabilla, Lulu Nabilla, Lulu Mayna Ningrum, Astrid Kusuma Novhitasari Simbolon Novriadi, Yoga Nuriska, Alda Nuro, Syazliana Nursyirwani, Nursyirwani Ogesnain Sinaga Oriza, Syucitra Pambudi, Bagas Ariya Panjaitan, Sutrisno Pasaribu, Ridwan Saiful Basri Putri, Zulherija Rahdian Putra Rahmanda, Melysa Rahmi Relva Rahmita, R. Raja Yogi Prayoga Ramadhan Ramadhan Ramadhan Ramadhan Ramadhan, A.R Ramadhan, A.R. Ramadhan, Fauzi Raphita, Suci Ridwan Manda Putra Rifaldi Rifaldi, Rifaldi Rifardi Rio Aprialis Safitra Rizki, A. Romanta A. Tamba Romanta Andrianus Tamba Romauli, Junita Romel Kefriansa Putra Sanora, Fifi Saragih, Desra Agus Surya Sari, D.J. Satria Putra Anggara Seven, Diko Alafchan Sherly Ayunarita Sidabalok, Westy Yulia Sihotang, Nico Darminto Sihotang, Yula Elawati Simamora, Yohanna Beata Sinaga, Ade Ferdinus Sinaga, Ogesnain Situmorang, Ally Wibowo Sofyan H. Siregar Sofyan Husein Siregar Sri Dewi Utami Suci Monika Putri Sukendi Sukendi Syafruddin Nasution Syahril Nedi Syahwandi, Muhammad Tanjung, Cahyani Fitrah Tanjung, Cahyani Fitrah Thamrin &#039; Thamrin Thamrin Thamrin Thamrin Tiara Sri Mulawanti Tomi Suhendra Ulfa Rahmi Wahyu Novra Wanda Wahyudi Wahyudi Wendy, Lovvia Wenika Fitria Dona Yandra, Yoli Yanti, D.H. Yoga Novriadi Yozi Ahmad Fadhil Yusni Ikhwan Zani, Rahma Zientika, Zientika Zulkifli &#039; Zurma, Intan Alsyahkina