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All Journal JURNAL HUKUM Maspari Journal Jurnal Veteriner Jurnal Natur Indonesia Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Lingkungan Jurnal Kajian Lingkungan Bulletin of Electrical Engineering and Informatics Jurnal Ilmu Perairan (Aquatic Science) Maspari Journal Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan JURNAL BIOLOGI INDONESIA Science and Technology Indonesia IJEBA (International Journal of Economic, Business & Applications) JURNAL PHOTON Jurnal Ilmu Kedokteran dan Kesehatan Asian Journal of Aquatic Sciences ECOTONE SIMBIOSA Jurnal Zona Journal of Coastal and Ocean Sciences Devotion: Journal of Research and Community Service Journal of Rural and Urban Community Empowerment SEHATI: Jurnal Kesehatan Dinamika Lingkungan Indonesia CANANG: Jurnal Pengabdian Masyarakat Jurnal Ilmiah Multidisiplin (JUKIM) Jurnal Ilmu-Ilmu Kehutanan EcoNews Jurnal Manusia dan Lingkungan South East Asian Marine Sciences Journal Jurnal Perikanan dan Kelautan Jurnal Senpling Multidisiplin Indonesia Tropical Marine Environmental Sciences Jurnal Natur Indonesia
Yusni Ikhwan Siregar
Universitas Riau
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary Other

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THE EFFECT OF THE INDIAN OCEAN DIPOLE (IOD) PHENOMENON ON OCEANOGRAPHIC PARAMETERS IN THE MALACCA STRAIT Sania Glory Claudya; Yusni Ikhwan Siregar; Mubarak Mubarak
Asian Journal of Aquatic Sciences Vol 6 No 2 (2023): August
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.6.2.210-223

Abstract

The Indian Ocean Dipole (IOD) phenomenon is a phenomenon that occurs in the Indian Ocean due to differences in sea surface temperature anomalies between the Western Indian Ocean and Eastern Indian Ocean regions. This interaction produces high pressure in the Eastern Indian Ocean (South of Java and West of Sumatra) which causes the flow of air masses to blow westward. The IOD phenomenon affects oceanographic parameters such as sea surface temperature, salinity, currents, and sea level rise in Indonesian waters. The Malacca Strait is a very important waterway because it connects the Indian Ocean and the South China Sea (Pacific Ocean) so it is strongly influenced by the IOD phenomenon. This research was conducted from November 2022 - February 2023. Global data collection in this study was located in the waters of the Strait of Melaka and data collection for validation was carried out in the waters of North Rupat. This study uses data analysis using secondary data and primary data to validate the secondary data used so that it can prove that the global data in this study are accurate. The results of this study found that in the period 2013 - 2022, the range of sea surface temperature of the Malacca Strait is 27 - 32°C. The salinity of the Malacca Strait waters ranges from 32.54 - 33.49 ppt. The current speed in the Malacca Strait is classified as weak to strong with the direction of movement of the Malacca Strait ocean currents back and forth. The Malacca Strait waters have a mixed tidal type of double daily inclination with an F value of 0.6 cm. The sea level rise in the Malacca Strait ranges from 0.50 - 0.76 cm. The IOD phenomenon affects sea surface temperature, salinity, sea level rise, and current velocity depending on the IOD phase
Ocean current circulation modeling in the Bengkalis Strait in the east spring Fajar Fajar; Elizal Elizal; Yusni Ikhwan Siregar
South East Asian Marine Sciences Journal Vol. 1 No. 1 (2023): September
Publisher : Science, Technology, and Education Care

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61761/seamas.1.1.15-21

Abstract

The waters of the Bengkalis Strait are geographically very strategic, directly connected to the waters of the Malacca Strait and a strategic water transportation route. One of the complex phenomena that appears in the waters of the Bengkalis Strait is the phenomenon of current movement. This survey was conducted from June to August 2022. The survey location was in the Bengkalis Strait, Bengkalis Regency, Riau Province. The research aims to determine current patterns and sea level height during the highest tides and lowest low tides each month during the east season in the waters of the Bengkalis Strait. The method used is a Survey and a quantitative descriptive method. All data is processed using MIKE 21 software. First, Google Earth was used to create bathymetry data, and then the boundaries of the survey area were determined using MIKE 21. After obtaining the bathymetry, we continued with the flow model using MIKE 21 and then displayed the results. Obtained results: the highest tide occurred on 13/06/2022 at 13:00 WIB with an average current discharge of 0.14-0.16 m/s, and the lowest wave occurred on 13/06/2022 at 20.00 WIB with an average flow rate of 0.60-0.75 m/s
Faktor-Faktor Yang Berhubungan Dengan Kepatuhan Masyarakat Dalam Menjalankan Protokol Kesehatan COVID-19 Di Tempat Kerja Ristiani, Neni; Siregar, Yusni Ikhwan; Suyanto, Suyanto
Jurnal Ilmu Kedokteran dan Kesehatan Vol 11, No 8 (2024): Volume 11 Nomor 8
Publisher : Prodi Kedokteran Fakultas Kedokteran Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jikk.v11i8.13545

Abstract

Pandemi COVID-19 telah menjadi tantangan global yang mempengaruhi berbagai aspek kehidupan, termasuk di tempat kerja. Untuk mencegah penyebaran virus, berbagai protokol kesehatan telah diterapkan, seperti penggunaan masker, menjaga jarak fisik, cuci tangan secara teratur, dan penggunaan hand sanitizer. Kepatuhan terhadap protokol kesehatan di tempat kerja menjadi kunci untuk meminimalkan risiko penularan dan memastikan keberlangsungan operasional perusahaan. Namun, dalam praktiknya, tingkat kepatuhan terhadap protokol kesehatan di tempat kerja bervariasi. Oleh karena itu tujuan utama dari penelitian ini adalah untuk mendeskripsikan kepatuhan masyarakat terhadap protokol kesehatan COVID-19 dan faktor-faktor terkait. Penelitian ini merupakan penelitian kuantitatif dengan rancangan studi cross-sectional pada 300 karyawan dari 6 instansi di Pekanbaru. Data dikumpulkan dengan kuesioner kemudian dianalisis dengan menggunakan uji Chi-Square. Hasil penelitian menunjukkan tingkat kepatuhan masyarakat di tempat kerja dalam mematuhi protokol kesehatan 53,3%. Hasil analisis faktor-faktor yang berhubungan dengan kepatuhan masyarakat menunjukkan hasil jenis kelamin (p = 0,003), usia (p = 0,021), dan profesi (p = 0,014). Dari penelitian ini dapat disimpulkan faktor-faktor yang mempengaruhi kepatuhan masyarakat dalam menjalankan protokol kesehatan di tempat kerja adalah jenis kelamin, usia, dan pekerjaan.
Blue Economy Approachtoward Sustainability Of Riau Marine And Coastal Ecosystem Siregar, Yusni Ikhwan; Joneri, Romi
International Journal of Economic, Business & Applications Vol. 1 No. 1 (2016): International Journal of Economic, Business and Applications
Publisher : Program Pascasarjana, Universitas Riau

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

Abstract

The increase pressure on marine capture fisheries due to rising demand for seafood, growing population, and a rapid increase in fisheries exploitation, brought about a decline in productivity of many fisheries.Last issues of ocean degradation were related to; overfishing, pollution, habitat destruction (coral reef). FAO (2008) reported that 32% of fish stocks are ove-rexploitated, depleted or recovering from depletion, and this figure is rising every year.This unsustainability of marine and coastal ecosystem were related to overfishing, pollution and waste, habitat destruction (coral reef), climate change, and loss of habitat and biodiversity. Aware of those issues and threats the productive and valuable ocean area lies at risk. Therefore, a concept of Ecosystem Based-Management (EBM) was introduced. The approach lays out a series of principles to guide management toward long-term sustainability of marine and coastal management. Further beyond the sustainability,the term “blue economy” has been used by the Pacific Small Island Developing States Perspective (PSIDS). in effort to highlight the importance of conservation and sustainable use of marine resources.
Studi Komparatif Pola Pertumbuhan Ikan Endemik Depik (Rasbora tawarensis Weber & de Beaufort, 1916) Menggunakan Linear Allometric Model (LAM) Berdasarkan Musim di Danau Laut Tawar, Aceh Tengah Harahap, Syaiful Ramadhan; Sukendi, Sukendi; Siregar, Yusni Ikhwan; Nofrizal, Nofrizal; Hairussalam, Hairussalam; Syafriansyah, Syafriansyah; Yusapri, Andi; B, Arief Rachman; Ramses, Ramses
SIMBIOSA Vol 13, No 1 (2024): SIMBIOSA
Publisher : Program Studi Pendidikan Biologi, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/simbiosa.v13i1.6700

Abstract

This study aimed to compare the growth pattern of depik (Rasbora tawarensis Weber & de Beaufort, 1916) using a Linear Allometric Model (LAM) in different seasons in Lake Laut Tawar (LLT), Aceh Tengah. The results showed that seasonal differences affected the length-frequency size distribution, length-weight relationship, and condition factors but did not affect the growth pattern of depik in LLT. A comparison of growth patterns using LAM showed no significant differences, with a tendency for negative allometric patterns (b
Length-Weight Relationship and Sex Ratio Blood Clam (Anadara granosa) in Rangsang Barat Waters  Kepulauan Meranti District, Riau Province Efriyeldi Efriyeldi; Yusni Ikhwan Siregar; Sofyan Husein Siregar
Jurnal Perikanan dan Kelautan Vol. 27 No. 2 (2022): June
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.27.2.158-163

Abstract

Anadara granosa is one of the bivalves that are often found in public markets. This study aimed to study the relationship between length-weight and sex ratio of blood clams (A. granosa) in the coastal waters of West Rangsang. Sampling was carried out every month at three stations. Shells were collected from a 1 x 1 m2 plot on a quadratic transect. The relationship between length and weight was analyzed by regression analysis. The sex ratio between the number of female and male blood clams in each month of sampling was calculated and followed by the Chi square test to test the similarity. The results showed that the relationship between length and weight of A. granosa was positive allometric. The sex ratio of female and male blood clams in the waters of West Rangsang is not balanced. The number of male blood clams is more than the female
UPAYA PENGENDALIAN GAS HIDROGEN SULFIDA (H2S) DI INSTALASI BIOGAS PABRIK KELAPA SAWIT PT. RAMA JAYA PRAMUKTI KECAMATAN TAPUNG Jhon Prengky; Yusni Ikhwan Siregar; Bayhakki Bayhakki
JURNAL SENPLING MULTIDISIPLIN INDONESIA Vol 2, No 1 (2024)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/senpling.v2i1.15

Abstract

Hydrogen Sulfide or H2S is a gas that is toxic and dangerous, especially for human health. The biogas processing process produces several gases, namely CH4,CO2, NH3 and H2S gas which are not utilized, so that H2S gas will be disposed of together with the waste.. This study aims to determine the concentration of H2S in the ambient air around the work biogas area, to describe the level of knowledge and compliance of workers in the use of personal protective equipment (PPE), and to determine the H2S gas control efforts carried out in biogas installations. This research was conducted by taking ambient air samples to determine the concentration of H2S in the air. Descriptive analysis is used to describe the level of knowledge and compliance of workers in the use of PPE and to determine the H2S control efforts carried out. The results showed that the concentration of H2S in the air was 0.032 ppm at the biogas erea and lesser 0.003 ppm at the waste poll area. The air quality around the biogas area still exceeds the standard limit so it is not safe for the environment but according to OSHA regulations the H2S concentration of 0.01 ppm to 1 ppm still has no health impact so that the air quality around the biogas is safe for workers. The level of knowledge in use obtained a good knowledge value of 60% and a bad knowledge value of 40%. The level of compliance in the use of PPE obtained compliance results of 67.3% while the non-compliance value was 33.3%. Efforts to control H2S gas are carried out based on the implementation of Government Regulation Number 50 of 2012 concerning the OHS Management system which includes technical control, administrative control in the form of periodic monitoring and socialization to workers.
Distribution of Microplastic at Sediments in the Coast of Bungus Bay Padang West Sumatera Province Islami, Muhammad Dinul; Elizal; Siregar, Yusni Ikhwan
Journal of Coastal and Ocean Sciences Vol. 1 No. 1 (2020): 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 carried out in July to August 2019. It aimed to learn the shape and the abundance of microplastics in the coastal area of Bungus Bay, West Sumatra Province. Survey method was applied and PVC pipe was used to collect sediment samples from three different stations with three sampling points on each station. The results showed that the abundance of microplastics were significantly different between stations, except at different sediment depths and tidal zones (it ranged from 191.11 - 301.11; 221.48 - 236.30; and 226.67 - 231.11 particles per kg of dry sediments consecutively). In addition, the microplastic with fiber type was higher than the two other types, such as films and fragments
Analysis of  Carbon Stock in Seagrass Enhalus acoroides in Benan Island, Lingga Regency Zulfahmi, Sayid; Siregar, Yusni Ikhwan; Zulkifli, Zulkifli
Journal of Coastal and Ocean Sciences Vol. 1 No. 1 (2020): 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 Benan Island, Katang Bidara Subdistrict, Lingga Regency, Riau Islands Province in February 2020. This study aimed to determine the value of density, biomass and carbon stock in seagrass E. acoroides. The method used in this study is a survey method, where the data collected is considered to represent the waters of Benan Island. The density of seagrass E.acoroides in the study location ranged from 22.67 to 31.22 individuals/m2. E.acoroides seagrass is divided into two parts, namely the top of the substrate or above ground biomass (Agb) and the bottom of the substrate or bellows biomass (Bgb). The average value of biomass seagrass ranged from 1,113.27-4,412.24 g/m2. The highest carbon stock was in the rhizoma section at Station I (2,134.46 gC/m2) and the lowest was in the leaf section at Station II (363.08 gC/ m2). Biomass and carbon stock in the Bgb section is higher than the Agb portion
Analysis of Total Suspended Solid Distribution and Its Effect to the Fertility of Marine Waters Around Fish Auction Place (TPI) Dumai Situmorang, Nesi Silvia; Rifardi, Rifardi; Siregar, Yusni Ikhwan
Journal of Coastal and Ocean Sciences Vol. 2 No. 1 (2021): 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 study aims to determine the distribution of total suspended solid concentration (TSS) in the waters around TPI Dumai. Water samples were taken from 12 sampling point from the waters during high and low tides to determine TSS concentration. The concentration of total suspended solids ranges from 60-130 mg/l. The concentration is relatively higher (>80 mg/l) in the area that is close to residential areas and TPI. The highest concentration of total suspended solids was 117 mg/l found in waters with a depth of 1-3 m, while the lowest was 81 mg/l found at the sampling point of 5,9. The distribution of chlorophyll-a concentration is relatively higher around the coast which is around 0.476-0.178 mg/l, and it's lower off the shore which is around 0.080-0.090 mg/l. The chlorophyll-a concentration is lower in waters far from the coast because there is no direct nutrient supply from the land. The regression analysis indicate that Tss and chlorophyll-a has a weak relationship between the two variables relatively weak but they are still affecting each other
Co-Authors ', Arfitrah . Zulfan A.A. Ketut Agung Cahyawan W AA Sudharmawan, AA Adel Zamri Adelina, Adelina Adiana Sulistianto Afriza, Dinny Afrizal Tanjung Agnesia Jaiyani br Barus Agnesia, Yohana Agung Dhamar Syakti Agus Mandar, Agus Agus Susanto Ahmad Faisal Daulay Ahmad Kurnain ahmad rizal Alfi Puadi Alimah Alimah Alimah, Alimah Almasdi Syahza Alvin Natali Amalia Prafitra Harman Amanda, Yossie Anak Agung Istri Sri Wiadnyani Ananta, Dio Alif Andi Yusapri Andrew ST OS Andri, Rinda Juni Anhar Anhar Anisaldi Anisaldi Anita, Sofia Anton Akbar Nugraha Antoni Antoni Antonius ' Apdillah, Doni Aras Mulyadi Arief Mubyarso Arief Rachman. B Aristya Ardhitama Aritonang, Simon Hasintongan Autika, Yotta Azhari, Febbi Bahruddin Bahruddin Bahtiar Denny Edison Barnes Silitonga Batubara, Ummi Mardhiah Bayhakki Bayhakki Bayhakki Bayhakki Bayu Oktavian Benny Heltonika Bintal Amin Budi Darmawan Cik Mas Edison Claudya, Sonia Glory Dahlia Dahlia Dameria Dameria Dandi Arianto Pelly Dani Ali, Nurhalim Dariono Dariono Dariono, Dariono Dariyatmo Dariyatmo Debby Febriani Dedi Afandi Defri Yoza Deni Efizon Denny Mulianto Dermawan, Ernanda Putra Desi Ariani DESI PURNAMA SARI Desis Tri Yenti Dessy Yoswaty Dessy Yoswaty Devid Joehari Dharma Eka Putra Dianysah, Gusti Dilla Andini Doni Apdillah Dr. Nofrizal, S.Pi, M.Si Dyonisius Hutauruk Edy T S Sihombing Efendi, Musanif Effino Panji Sudewo Efriyeldi, Efriyeldi Eko Hendi Saputra Eko Sutrisno Eko Sutrisno, Eko Elda Nazriati Elfizar, Elfizar Elizal Elizal Elizal Endang Agus Damanhuri Erfana Romauli Lumbantoruan Ernawaty Ernawaty Fabri Putra Nugraha Fadel Fadel Fadli Aulia Fajar Fajar Fajriani Ananda Fakhrurrozi Fakhrurrozi FAUZIYAH Febriana Zulmi Febrina Hanum Feliatra Fepi Yulianti Fika Yulia Rachmah Fitri Agustriani Fitri, Yuliza Fransiska, Dina Fuad, M Anwar Fuadi, Indra Ginting, Daniel Paskah Hadi Sastranegara Hadinoto Hadinoto Hafidawati, Hafidawati Hairussalam, Hairussalam Hari Handika Sektiawan Harianto Harianto Hasdi Yanti HS Helmi Putra Hendra Taufik Heni Pujiastuti Henni Elyati Henni Syawal Herli, Irwan Herli, Irwan Hidayat Pratamasari Hutomo, Ragil Tribhakti I Gusti Ngurah Antaryama Iesje Lukistyowati Imam Pangestiansyah Putra Imran , Imran Imran Imran Indra Wariski Indra Wariski Irfan Yunus Irvina Nurachmi irvina Nurachmi Irwandy Syofyan Isjoni Isjoni Islami, Muhammad Dinul Isnaini Jhon Edward Jhon Prengky Jimmy Copriady Johanes Hutagaol Joneri, Romi Jonny Zain Juandi Juandi Karnila, Rahman Karnila Kevin Anandika Dwi Putra Khawarizmi, Dannes M. Khotimah, Nadila Nur Kurniawan, Rika Laura Dameshita Silalahi Lee, Seung Hun Lilis Kurnia Lilis Kurnia Lita Febriani Lubis, Abdillah Lysbetti Marpaung, Noveri M. Delpopi M. Imran Sinaga Maliki Maliki Manalu, Govinda Hendra Marpauang, EkoRinaldi Maulana Hardi Melki Meuthia Pangerani Miduk Tampubolon Mirna Ilza Miswadi Miswadi Mubarak Mubarak Mubarak Mubarak Mubarak Mubarak Mubarak Mubarak Muhammad Arif Fahrurozi Muhammad Fahrul Mulyadi Mulyadi Musrifin Galib Nabila, Amelia Nafril Yuzen Nawari Nawari Nawari Neni Ristiani Nofrizal Nofrizal Nofrizal Nofrizal Nofrizal Nofrizal Nofrizal Nofrizal Nofrizal Nofrizal Noprianda, Renza Novi Permata Sari Nugrahani Trie Ryzzky Nurafni, Melia Nurrahmi, Febi Nursyirwani, Nursyirwani Nurul Abdiah Nasution Oktama R, Dhea Oktavia Dewi Oktavia Dewi, Oktavia Olfa Riyana Prastya Bayu Afrian Purnama, Indra Dwi Putra Putra, Kevin Anandika Dwi Putri Kalbina Rahmadi Rahmadi Rahmadi Rahmadi Ramses Ramses Firdaus, Ramses Ramses Ramses Rasoel Hamidy Razai, Tengku Said Redho Yoga Nugroho Ridwan Manda Putra Rifardi Rika Kurniawan Rika Kurniawan Rika Kurniawan Rinaldo, Rinaldo Rinaldo, Rinaldo Riris Aryawati Risna Nofriani Ritonga, Agnesia Rivaldi Ananda Dwi Putra Roito, Martin Romi Joneri Rommie Jhonerie Ronal Yuriza Fithra Rosma, Iswadi Hasyim Rosyidin, Hidayatul Rozirwan . Salsabilla, Dila Azzahra Sania Glory Claudya Sanya Gautami Saputra, Muhammad Nasrul Septian Julifar Silaban, Tulus Gandra Saputra Siti Zahrah Siti Zahrah Situmorang, Nesi Silvia Sofia Anita Sofyan Husein Siregar Sri Indarti Sukendi Sukendi Sukendi Sukendi Sumanti, Susi Suwondo Suwondo Suyanto Suyanto Syafriansyah, Syafriansyah Syafruddin Nasution Syahril Nedi Syahril Syahril Syahril Syahril SYAIFUL BAHRI Syaiful Ramadhan Harahap Syarwandi David T. Edy Sabli Tengku Nurhidayah Thamrin Thamrin ' Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Tyas Handayani Uju Doi Sibarani Verid Aria Susammesin, Verid Aria Viktor Amrifo Viktor Amrivo Vivi Indriani Vivin Seygita Vivin Seygita, Vivin Wariski, Indra Wike Ayu Eka Putri Wirawan, Bayu Andrianto Yana, Tesya Desi Yani, Indah Novi Yanti Dasrita Yanti Dasrita, Yanti Yetti Elfina Yossie Amanda Yuhanda, Sabina Dwi Yulindra, Ade Yuwanda Ilham Zahtamal Zahtamal Zulfahmi, Sayid Zulfan Saam Zulfan Saam Zulfan Saam Zulfan Saam Zulfan Saam Zulfikar, Andi Zulhendri Zulhendri Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnaini Zulkarnaini Zulkifli Zulkifli