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All Journal Jurnal Natur Indonesia Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Lingkungan Jurnal Kajian Lingkungan Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Asian Journal of Aquatic Sciences Jurnal Zona Journal of Coastal and Ocean Sciences Journal of Rural and Urban Community Empowerment Dinamika Lingkungan Indonesia Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) EcoNews Jurnal Perikanan dan Kelautan Tropical Marine Environmental Sciences Jurnal Natur Indonesia

Sofyan Husein Siregar

Universitas Riau

Author-ID : 381975

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences Other

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BIOEKOLOGI Nerita costata (GASTROPODA) IN MANGROVE REGION KUALA KAMPAR DISTRICT DISTRICT INVITATION OF RIAU PROVINCE M. Hambali M. Hambali; Sofyan Husein Sireger; Syafruddin Nasution
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 The study was conducted in March 2018. Sampling was conducted in the territorial waters of Kuala Kampar Sub-district, Pelalawan District. The purpose of this research is to know the ecology of N.costata, covering environmental condition, organic matter, population density, frequency of size and relationship of organic matter content in mangrove forest of Kuala Kampar Subdistrict. The method used in this research is survey method. The sampling station is determined purposively, by considering the condition of the sampling region. Each station has 3 transects and each transect consists of 3 plots so that there are 9 stations plot. Based on the research result, it can be concluded that Kuala Kampar water environment condition is still good, the highest organic material is at station II that is 14,89% and the lowest is at station I that is 6,77%. Population density between stations and between zones in Kuala Kampar Sub-district on N. costata ranges ranges up to 4.33-8.67 ind / m2. The class-size distribution of this dominating species found in the study sites was a size class (2.1-3.0 cm). The effect of organic content of sediment with N. costata density in research area was moderate with correlation coefficient value (r) = 0,30. Keywords: Density, N. costata, Organic Sediment

ANALYSIS OF BIOMASS AND CARBON RESERVES IN THE SOUTH PART OF RUPAT ISLAND MANGROVE ECOSYSTEM Eddy Handoko; Bintal Amin; Sofyan Husein Siregar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The research was conducted in December 2015-February 2016 on mangrove ecosystems in the coastal area of South part of Rupat Island, Riau Province. The aim of research was to analyze the content of biomass and carbon in mangrove ecosystems as well as the ability to store carbon in the forest area. The survey method was applied in this research and carbon analysis was carried out in the Marine Chemistry Laboratory of Faculty of Fisheries and Marine Science of University of Riau. The results showed that the potential mangrove biomass was directly proportional to mangrove carbon stocks. The average yield of carbon stocks of biomass and organic carbon reserves of soil amounted to 58.8 tons/ha and 920.12 tons/ha, while the average yield of total carbon stocks was 978,92 tons/ha.Keyword : Mangrove, Biomass, Carbon Stocks, Rupat Island1)

THE COMUNITYSTRUCTURE OF EPIPHYTIC DIATOMS ON SEAGRASS LEAVES OF (Thalassia hemprichii) IN NIRWANA BEACH WATERS OF PADANG CITY,WEST SUMATERA PROVINCE Riski Hambali; Zulkifli Zulkifli; Sofyan Husein Siregar
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 This research was conducted in March 2018. The purpose of this research was to determine the water quality, the structure of epiphytic diatoms community in Nirwana Beach Padang City, West Sumatra Province. The method used were consisting of field survey.Identification and analysis of epiphytic diatoms was conducted at Marine. Biology Laboratory Faculty of Fisheries and Marine University of Riau.Based on the results of the study,the abundance of epiphytic diatoms ranged between 7.077 ind/cm2 - 22.155 ind/cm2, diversity index (H ') ranged from 1,4325 - 1,8315 (medium category), uniformity index (E) ranged from 0,6482 - 0,7110 means the uniformity of organisms in the waters of Nirwana Beach is in a stable state, and dominance index (C) ranged from 0,4042 - 0,5111 . it can be said that there are types that dominate at station III. The identification found 9spesies of epiphytic diatoms i.e.: Melosirasp., Coscinodiscussp., Cocconeissp., Diploneissp., Gyrosigmasp., Naviculasp., Pleurosigmasp., Nitzschiasp. danRhizosoleniasp. The most common type and has the highest abundance is Cocconeis sp. and Nitzschi sp.Keywords: Community Structure, Epiphytic Diatoms, Thalassia hemprichii,Nirwana Beach

DETERMINATION OF WATER QUALITY IN PHYSIC AND CHEMICAL USE STORET INDEX AND POLLUTION INDEX IN COASTAL WATERS DUMAI RIAU PROVINCE Nur Arifin; Sofyan Husein Siregar; Syafrudin Nasution
AQUASAINS Vol 8, No 1 (2019)
Publisher : Jurusan Perikanan dan Kelautan

The condition of good water quality is essential to support the survival of organisms that live in it. Determination of the status of water quality needs to be done as a reference in monitoring the water quality pollution.The purpose of this study to analyze and determine the status of water quality physically and chemically in the coastal waters Dumai. The method used in this research is survey method was conducted in December 2018 - April 2019 in the Coastal Water Dumai in Riau province. Sampling sites physical and chemical parameters determined by purposive sampling. Based on consideration of environmental conditions and Dumai City Regulation No. 11 In 2002, it was determined sampling consisted of four stations, with each station there are 5 sampling points were used as replicates. Determining the status of water quality using storet index and the index of pollution. Water quality measurement results About Coastal Dumai use Storet index and the pollution index shows that the coastal waters of Dumai categorized as Heavy Polluted waters.

The Diversity and Abundance of Planktonic Diatoms Vertically in Nareh Coastal Waters Manggung Village North Pariaman Sub-District Pariaman City West Sumatera Province Yulia Prasiska; Thamrin Thamrin; Sofyan Husein Siregar
Journal of Coastal and Ocean Sciences Vol. 1 No. 1 (2020): September
Publisher : Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.1.1.60-67

This research was conducted in March 2020 to find out the difference in planktonic diatoms abundance vertically at each station in the waters of Nareh Beach, Manggung Village, North Pariaman Sub-District, Pariaman City, West Sumatra Province. The method used is a survey method that consists of three depths at three observation stations. The water quality measured in this study were temperature, brightness, pH, salinity, current velocity, and depth. Based on the research results, there are 11 types of planktonic diatoms found in the waters of Nareh Beach, namely Gyrosigma sp., Chaetoceros sp., Odontella sp., Rhizosolenia sp., Pleurosigma sp., Thalassionema sp., Leptocylindrica sp., Coscinodiscus sp., Nitzschia sp., Guinardia sp, and Skeletonema sp. the most dominant one. The highest total value of planktonic diatom abundance ranges (9779.65-12867.96 ind/L) is found in the surface layer and the lowest ranges (2573.59-10294.37 ind/L) is at 5 m depth. There is no difference in the total value of planktonic diatom abundance between depths

Epipelic Diatom Community Structure in the Intertidal Zone Mengkapan Waters, Sungai Apit District, Siak Regency Adam Dionfriski; Sofyan Husein Siregar; Irvina Nurrachmi
Journal of Coastal and Ocean Sciences Vol. 2 No. 3 (2021): September
Publisher : Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.2.3.207-216

This research was conducted in December 2020 in Mengkapan Waters, Sungai Apit District, Siak Regency. The aims of this research was to analyze the composition, abundance, diversity index, uniformity index, and dominance index of epipelic diatom species in the intertidal zone. The method used is a survey method and the determination of the sampling location by purposive sampling based on anthropogenic activities around the waters. The water quality measured in this study were brightness, temperature, current velocity, salinity, pH, nitrate, and phosphate. Based on the research results, there are 19 species epipelic diatoms found in Mengkapan Waters, namely Coscinodiscus sp., Navicula sp., Gyrosigma sp., Thalassiosira sp., Pleurosigma sp., Synedra sp., Pinnularia sp., Surirella sp., Nitzchia sp., Triceratium sp., Melosira sp., Skeletonema sp., Stephanodiscus sp., Oscillatoria sp., Cocconeis sp., Epithemia sp., Diadesmis sp., Cymbella sp., and Amphipleura sp. The average value of abundance ranged from 29,245.37 – 35,744.33 ind/cm2, the diversity index value ranged from 2.5909 to 2.8014, the uniformity index value ranged from 0.6736 – 0.7755, and the dominance index ranged from 0.1684 - 0.2064. Based on one-way Anova test, concluded that abundance of epipelic diatoms between each stations weren’t significant.

Analisis of Total Oil Content and Planktonic Diatom (Bacillariophyceae) In the Waters of Lalang Strait, Mengkapan Village Siak Regency Octavia Lorensa Br Sinaga; Sofyan Husein Siregar; Syahril Nedi
Jurnal Perikanan dan Kelautan Vol 27, No 2 (2022): June 2022
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.27.2.129-135

Oil pollution in the waters is one of the factors that affect the abundance of phytoplankton, especially the diatom. The waters of Lalang Strait, Mengkapan Village, are used as international shipping lanes and industrial areas. The research was conducted in the Waters of Lalang Strait Mengkapan Village, Siak Regency, Riau Province. The research was conducted at 3 stations with different location characteristics. Station 1 is near Tanjung Button Port, station 2 is in the mangrove ecotourism area, and station 3 is in the fishing port and near the settlement. The result of oil content analysis obtained an average value of 0,00016 ppm. The highest oil content at station 3 is 0,00035 ppm and the lowest at station 2 is 0,00011 ppm. The results of the calculation of the abundance of planktonic diatoms ranged from 5.014 to 22.062 cells/l. The highest abundance at station 1 was 17.716 cells/l. The lowest abundance was at station 2 which was 9.694 cells/l. Simple linear regression test result, obtained equation Y= 14,2644+(-3802,27x). The coefficient of determination (R2)= 0,002 states 0,2 % of the abundance of planktonic diatoms is influenced by oil content and the rest is influenced by other environmental factors. Correlation coefficient (r) = 0,053, so the relationship of total oil content with the abundance of planktonic diatoms is very weak

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 2022
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

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

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.

Analisis Kebakaran Hutan Dan Lahan Di Provinsi Riau Ardhi Yusuf; Hapsoh Hapsoh; Sofyan Husein Siregar; Dodik Ridho Nurrochmat
Dinamika Lingkungan Indonesia Vol 6, No 2 (2019)
Publisher : Universitas Riau

Riau is one of the provinces in Indonesia that often experience forest and land fires. Forest and land fires cause enormous environmental, economic, and social losses and damages that even cause disruption of political relationship between countries. This study aims to determine the relationship between biophysical, socioeconomic, and policy factors in influencing the occurrence of forest and land fires in Riau Province Based on researh, it is known that there is a correlation between forest and land fires variables in Riau Province to distance from 15 variables, ie peatland, river, road, forest cover, plantation cover, plantation, settlement (built up area), dry land, Timber Forest Product Utilization License, plantation concession, other use areas, protected forest areas, production forests, conversion production forest and limited production forest.

Analisis Implementasi Program Corporate Social Responsibility (CSR) PT. Perawang Sukses Perkasa Industri (PT. PSPI) di Kecamatan Kampar Kabupaten Kampar Provinsi Riau Dalam Perspektif Lingkungan Belilasari Belilasari; Thamrin Thamrin; Sofyan Husein Siregar
Dinamika Lingkungan Indonesia Vol 4, No 2 (2017)
Publisher : Universitas Riau

This study was conducted from June to September 2016 and located in Kampar Sub-district, Kampar District, Riau Province. This study aims to analyze the implementation of corporate social responsibility program at PT. PSPI in public service environment and environment around the period 2013-2015, analyze the factors that influence the implementation of CSR program and analyze the most dominant factor in the implementation of CSR program in PT. PSPI period 2013-2015. The results of this study explain that PT. PSPI conducts its CSR program well, among others: sustainable development infrastructure, religious facilities, sports facilities, health facilities, community economy and education for the community around the company. So that public relations as well as the Company continues to run well and give confidence to the public that the company has a concern in the field of CSR. Based on the results of research on the implementation of public services that the Company is more focused on Economic and Social aspects when developing CSR programs because the community has an influence on the existence of the company. Each of the company's operational activities will have the potential to positively and negatively impact the communities surrounding the company. If companies pay attention to social aspects then the company will be able to achieve development and sustainable development. Companies in conducting business activities are not only oriented to profit only. Although achieving maximum profit is the main purpose of the establishment of a company, but the company can not achieve these benefits at the expense of the interests of other stakeholders ie stakeholders. Every company has responsibility for its actions and business activities that have an impact, either directly or indirectly on the stakeholders and the environment in which the company is located.

Co-Authors ', Thamrin ', Zulkifli AA Sudharmawan, AA Achmad Mulyadi Adam Dionfriski Ade Riccard Simatupang Adriana, Alysa Adrizal, Taufik Afrizal Tanjung Albahri Albahri Alvin Natali Andi Darlianto Anisaldi Anisaldi Anita, Sofia Antoni Antoni Aras Mulyadi Ardhi Yusuf Ardian Dwi Pratama Ardiansyah Hamid Arief Mubyarso Aslim Rasyad Asmika Harnalin Simarmata Bahri S, Aswan Bahtiar Denny Edison Belilasari Belilasari Belilasari, Belilasari Beranda, Ongki Okto Bintal Amin Bornok Silalahi Chairun Nisa Chitra Hermawan Chitra Hermawan Dalimunthe, Salmi Patima Dellarosa, Wiranda Deni Efizon Desmarina, Y. Despela, Despela Dessy Yoswati Dessy Yoswaty Devid Joehari Dewi Marni Dinda Trie K Hayati Dinda Trie K Hayati Dionfriski, Adam Dodik Ridho Nurrochmat Dudi Candra Eddy Handoko Edmond Edwar Efriyeldi, Efriyeldi Elda Nazriati Elizal, Elizal Endah Julita Eva Desy Yulina Siregar, Eva Desy Yulina Fainal Asandi Fairuzia, Putri Marwah Farid Febrianda Fathiya Hanifa Fauzan, M. Febbyolla, Selfi Anidal Febrianda, Farid Fery, Rony andes Gendraya Rohaini Ginting, T.B. Hamid, Ardiansyah Hanif, Naufal Happy Rosalina Hapsoh Hapsoh Hapzi Ali Henny Daniaty I Gusti Wayan Murjana Yasa Imam Suprayogi Ira Putra, Ira Irvina Nurachmi Jamhari Jamhari Jasril Jasril Joenathan Sarumpaet Joko Samiaji Josua Simanjuntak, Josua Lazuardi, Andika Lucky Rahman Lydia S Marpaung M. Hambali M. Hambali Manda Putra, Ridwan Marpauang, EkoRinaldi Masykur Hz Masykur HZ Megawati Hari Dwi Jayanti Mery Mery Mia Audina Mia Audina, Mia Miduk Tampubolon Mila Rosa Miswadi Miswadi Mubarak Mubarak Mubarak Mubarak Muchlis Muchlis Muchlis Muchlis Mudinillah, Adam Mufidah, Marhamah Nurul Muhammad Saroha Lubis Muhammad, Andi Syahroni Mumin Rifai Musrifin Galib Nickson Panjaitan Nila Sari Lubis Nizar Rofiki Nova Esterlita Novi Permata Sari Noviawati Riza Nugraha, Rafiq Prima Nur Arifin Nur Arifin, Nur Nurhapida Nurhapida Nurliya ' Octavia Lorensa Br Sinaga Prasiska, Yulia Puspita, Sarah Putri Wahyuni Rahmita, R. Ramadhan, A.R Rasoel Hamidy Renata, Vivien Ridwan Manda Putra Rifardi Rinaldo, Rinaldo Rinaldo, Rinaldo Rini, Yulia Sapta Riski Hambali Risqiana Dani Riza Yuliani Rizka Aprisanti Rizka Aprisanti Rizki, A. Rosa, Mila Rulen, Betty Nia Rusadi, M Dio Eigmar S.Pd. M Kes I Ketut Sudiana . Said Nazman Arif Samsir Samsir Sari, D.J. Selfi Anidal Febbyolla Selvia, Seli Shofian Nanda Adiprayoga Silaban, Santi Maria Sinaga, Octavia Lorensa Br Sirait, Juliper Parasian Sitindoan, Benni Mario K. Sofia Anita Sujianto Sujianto Sujianto Sukendi Sukendi Susiyanti. N Sutami Sutami Sutrisna Sutrisna suwondo suwondo Syafruddin Nasution Syafrudin Nasution Syahril Nedi Taufik Herman Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Trinop Sagiarti TRINOP SAGIARTI, TRINOP Trisla Warningsih Vivien Renata Wahyudi Wahyudi Wahyuni, Weni Indah Windarti Windarti Wiranda Dellarosa Yanasari, Nurry Yanti, D.H. Yosua Afrianus P Yudha Januarizki Setiawan Yulia Prasiska Yuliani, Riza Yusni Ikhwan Siregar Zahtamal Zahtamal Zientika, Zientika Zukarnaini Zukarnaini Zulfan Saam Zulkifli ' Zulkifli Zulkifli

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