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All Journal Jurnal Natur Indonesia Jurnal Ilmu Perairan (Aquatic Science)
Elizal Elizal
Jurusan Ilmu Kelautan, Fakultas Perikanan dan Kelautan, Universitas Riau
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Immunology & microbiology

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Abundance and Distribution Patterns of Gastropods in the Intertidal Bay of Kambang Lengayang Sub-District, Southern Coastal District, West Sumatera Ichwanul Harif; Afrizal Tanjung; Elizal Elizal
Jurnal Natur Indonesia Vol. 19 No. 2 (2021): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

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

Abstract

This study aims to determine the abundance and distribution pattern of gastropods in the intertidal bay, Kambang Lengayang District, Pesisir Selatan Regency, West Sumatra. The benefits of this research are expected to be a reference or information for further research in Kambang Bay which in the end is expected to minimize the adverse effects of gastropod hunting. The research method used in this study is a survey method, namely direct observation and sampling which is divided into 3 stations where the sampling station 1 is taking in the coastal waters of the bay in an area where there is no community activity, station 2 is taking in the waters of the bay in the fishing trawl area. station 3 taking in the coastal waters of Kambang in the reclamation area. Based on the analysis of organic sedimentary material in the study area, the average value was obtained at station 1 (3.55%), station 2 (4.20%) and station 3 (3.33%). Based on the analysis, the sediment fraction that dominates each station is sand. The gastropods found at the study site were Clypeomorus bifasciata, Littoraria scabra and Cerithulata cingulata. The abundance of gastropods in the coastal waters of Kambang ranged from 2.33 to 5.00 Ind/m2. The results of the ANOVA test showed that the abundance of gastropods in the bay waters showed 0.214 beaches, indicating that the difference in abundance between stations was not significant. The gastropod pattern found at the study site is generally in groups
Analysis of Microplastics on Sediments in the Waters of Selat Panjang of Tebing Tinggi Subdistrict, Meranti Islands Regency, Riau Province Ridwan Saiful Basri Pasaribu; Syahril Nedi; Elizal Elizal
Jurnal Natur Indonesia Vol. 19 No. 2 (2021): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

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

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
Analisis Kerentanan Pesisir di Kabupaten Pesisir Selatan Provinsi Sumatera Barat Yoga Novriadi; Mubarak Mubarak; Elizal Elizal
Jurnal Ilmu Perairan (Aquatic Science) Vol. 10 No. 1 (2022): Maret
Publisher : LPPM 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.
Struktur Populasi Gastropoda Terebralia palustris pada Ekosistem Mangrove Teluk Mandeh Kabupaten Pesisir Selatan Yozi Ahmad Fadhil; Syafruddin Nasution; Elizal Elizal
Jurnal Ilmu Perairan (Aquatic Science) Vol. 9 No. 2 (2021): Juli
Publisher : LPPM Universitas Riau

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

Abstract

Penelitian ini dilaksanakan pada bulan September 2020 di Ekosistem Mangrove Teluk Mandeh Kabupaten Pesisir Selatan yang bertujuan untuk mengetahui kepadatan, pola sebaran dan ukuran sebaran Terebralia palustris. Metode yang digunakan dalam penelitian ini adalah metode survei. Ada lima stasiun yang dipilih di ekosistem mangrove Mandeh. Hasil penelitian menunjukkan bahwa densitas dari 4,47 menjadi 6,8 ind/m2. Perbedaan densitas Terebralia palustris antar stasiun dianalisis menggunakan One way ANOVA. Hasil uji ANOVA diperoleh nilai signifikansi 0,036 (p value < 0,05) yang menggambarkan bahwa terdapat perbedaan densitas yang nyata dan nyata antar stasiun. Indeks pola sebarannya adalah Id = 1 yang artinya pola sebarannya acak.
Pemetaan Sebaran Suhu Permukaan Laut Kota Sibolga, Provinsi Sumatera Utara Menggunakan Satelit NOAA/AVHRR Ogesnain Sinaga; Mubarak Mubarak; Elizal Elizal
Jurnal Ilmu Perairan (Aquatic Science) Vol. 9 No. 1 (2021): Maret
Publisher : LPPM Universitas Riau

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

Abstract

Penelitian ini bertujuan untuk memetakan sebaran suhu permukaan laut (SPL) diperairan Sibolga berdasarkan citra satelit NOAA/AVHRR selama 20 tahun. Penelitian ini menggunakan metode survey bagi kepentingan ground check untuk mendapatkan data in situ SPL dan parameter air laut lainnya seperti kecerahan, pH dan salinitas. Hasil penelitian menunjukkan bahwa kisaran SPL berubah setiap lima tahunan dengan sebaran yang berbeda; besaran SPL dimaksud berkisar antara 28,5-30oC, 30,5-31oC, 27-29oC, dan 27,5-28,5oC. Sebagai tambahan, pH air laut berkisar antara 6-7 dengan kisaran salinitas antara 27-30 ppt. Perbedaan pola SPL mungkin terkait dengan adanya perubahan suhu global dan musim selama 20 tahun.
Co-Authors Afrizal Tanjung Ichwanul Harif Mubarak Mubarak Mubarak Mubarak Ogesnain Sinaga Ridwan Saiful Basri Pasaribu Syafruddin Nasution Syahril Nedi Yoga Novriadi Yozi Ahmad Fadhil