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All Journal Indonesian Journal of Geography Bumi Lestari JOURNAL OF COASTAL DEVELOPMENT ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Natur Indonesia Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Lingkungan Jurnal Ilmu Perairan (Aquatic Science) Jurnal Online Mahasiswa (JOM) Bidang Ilmu Sosial dan Ilmu Politik Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Journal of Education, Humaniora and Social Sciences (JEHSS) Asian Journal of Aquatic Sciences Unri Conference Series: Community Engagement Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Jurnal Zona Journal of Coastal and Ocean Sciences Journal of Rural and Urban Community Empowerment Jurnal Riset Kelautan Tropis (J-Tropimar) EcoNews Jurnal Manusia dan Lingkungan Jurnal Perikanan dan Kelautan Jurnal Natur Indonesia
Rifardi
Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Physics Public Health Social Sciences

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Journal : JOURNAL OF COASTAL DEVELOPMENT

 1 
DISTRIBUTION OF SEDIMENT, BENTHIC FORAMINIFERA AND MERCURY IN THE SOUTH YATSUSHIRO SEA, KYUSHU, JAPAN R. Rifardi
JOURNAL OF COASTAL DEVELOPMENT Vol 11, No 3 (2008): Volume 11, Number 1, Year 2008
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Bottom sediment samples were collected at 74 stations in the South Yatsushiro Sea, off the west coast of central Kyushu Island, Japan using gravity corer. 62 core samples were used for bottom sediments analysis and for determination of mercury content. Among these samples, only 5 core samples were used for this study in an attempt to clarify the relationship between the vertical distributions of benthic foraminiferal assemblages (Bulimina denudata) and mercury contents in core sediments. The distribution pattern of sediment median diameter and of the maximum mercury content at some layers of each core show that the fine-grained sediment polluted by mercury were transported both northeastward and southward by weak longshore currents and spread toward north and west across the northern and souhtern part of the South Yatsushiro Sea. Bulimina denudata shows the highest frequency at every layer which has high mercury content ranging from 0.14 to 3.46 ppm, and is comparatively low at all unpolluted layers. The frequency of Bulimina denudata slightly decreased at the layers showing more than 3 ppm. All these signals suggest that Bulimina denudata does not prefer the bottom sediments showing high mercury contents but tolerates mercury pollution.
ECOLOGICAL ANALYSIS OF LIVING BENTHIC FORAMINIFERA IN SURFACE SEDIMENTS FROM THE SOUTH YATSUSHIRO KAI (SEA), SOUTHWEST KYUSHU, JAPAN Rifardi ,
JOURNAL OF COASTAL DEVELOPMENT Vol 5, No 3 (2002): Volume 5, Number 3, Year 2002
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Bottom sediments were collected from 74 stations in the South Yatsushiro Kai (Sea), Japan using gravity corer in March 1996. Aimed at clarifying the relation between living benthic foraminiferal assemblage and environmental conditions, the Q-mode cluster analysis was carried out based on the predominant species of living benthic foraminifera recognized at the topmost one centimeter of 73 core samples. The results of this study show a trend of a large number of living benthic foraminifera is found in central part of the sea, on the other hand, a small number is seen in the northern and southern part. The study area is characterized by 469 species of living benthic foraminifera belonging to 114 genera. In relation to the five divisions of the marine environment based on oceanographic data, mechanical analysis data and sedimentation rates, the foraminiferal assemblages in the South Yatsushiro Kai were grouped into five populations. Population I occupies the areas near the straits under the influence of strong tidal and bottom currents. Population II occupies the areas surrounding the straits (Gannoshiri Seto and Kurono Seto) influenced by water masses flowing through the straits. Population III occupies the areas of rather stagnant water masses in the northern and southern parts of the sea. Population IV occupies the areas located in the northeastern and southeastern parts of the sea, and influenced by river waters. Population V occupies the nearshore area located in the northeastern, and influenced by the water masses which flow southward from the North Yatsushiro Kai.
STUDY ON SEDIMENTOLOGY FROM THE MESJID RIVER ESTUARY AND ITS ENVIRONS IN THE RUPAT STRAIT, THE EAST COAST OF SUMATERA ISLAND Rifardi .
JOURNAL OF COASTAL DEVELOPMENT Vol 4, No 2 (2001): Volume 4, Number 2, Year 2001
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

The sedimentological aspects of the Mesjid River Estuary and its neighboring seas are revealed by various analytical approaches; i.e. mechanical grain size analysis, ignition loss method, metallic element analysis and sand grain composition analysis. The estuary area is characterized by fine sediments (very fine sand to very fine silt). Based on the relation between the character of bottom sediments and the environmental condition, the the Mesjid River Estuary and its Environs is divided into the following three areas: 1) The western part of the study area characterized by rather coarse-grained sediments and low mud content　under the influence of longshore current and poorly sorted sediments supplied by the Mesjid River, 2) The southern part of the study area characterized by coarse-grained sediments under the influence of strong tidal currents, 3) The northern and eastern parts of  the study area characterized by fine-grained sediments and high mud content under conditions of sea water masses. The texture and organic matter content of the sediments play important role on the growth of the mangrove which thrive along the coast of the study area.
Co-Authors ', Mubarak ', Rosshalia ', Zulkifli Achmad Hidir Aditya Dharma Putra Afrizal Tanjung Afrizal Tanjung Afrizal Tanjung Afrizam ' Agusti, Dinda Roanna Ahmad Nurhuda Ahmad, Alianisa Alan Nuari Sipahutar Ambosa Hidayat Aminuyati Andre Rangga Andri Hendrizal Andrian, Fikri Andriani, Fikri Anggie Agustian Anna Lilian Annisa Al-Qhoshashi Aras Mulyadi Arif Hidayatullah Arif Teguh Satria Arinalhaq, Aminah Aristi, Fiona Arnes, Arnes Aslim Rasyad Asrori ' Athhary, Dhiva Danaya Basiluddin, Fadhlan Bima Wahyu Nugroho Bintal Amin Chairunisa Rachmani, Chairunisa Dedek Susanto Dendy Ariandi Dessy Yoswaty Dimas Sochi Satya Mendrofa Dinda Trie K Hayati Dinda Trie K Hayati Edwar Rufli Edy J Girsang Efriyeldi, Efriyeldi Elisa Paramita Elizal Elizal Elizal, Elizal Eryandi sitanggang Etty Riani Fairuzia, Putri Marwah Fajri, Ferli Falsabila Widuri Fatchur Rochman Fathurrahman, Febri Fauzi, Manyuk Feliatra Fertikasari, Indah Fifi Sanora Firmansyah Firmansyah Gita Purnama Sari Gita Purnama Sari, Gita Purnama Hafiza Tartila Isty Hamidah Dasno Vera Harahap, Anugerah Ramadhan Hayen, Nabilla Syima Putri Nur Hendra Yosep Siburian Heru Purnomo Hutapea, Yeru Daniel Octryan Ilham Ilahi Imron Imron Indah Fertikasari Irvina Nurachmi Jamhari Jamhari Jannata Rahmad Putra Jasman ' Joko Samiaji Julyana Julyana Kevin Anandika Dwi Putra Khaira, Annisa Ulfa Lydia Anna Oliza M Lubis M. Iqbal A Maatitawaer, Natasya Debora C Marganda Simamora Maulana, Fariz Melas, Febi Betania Monalisa Hasibuan Mubarak ' Mubarak Mubarak Mubarak Mubarak Mubarak Mubarak Mubarak Mubarak Mubarok, Ihsan Dwi Muhammad Aditya Pradana Muhammad Fadhli Muhammad Hidayatuddin Muhammad Rizki Fadly Musrifin Galib Musrifin Ghalib Musrifin, Musrifin Nabilla Syima Putri Nur Hayen Nanci Aulia Safitri Naomi Simanjuntak Paramita, Elisa Pohan, Rizal Suardiman Pradana, Muhammad Aditya Pranata, Eryc Prastya Bayu Afrian Putra, Kevin Anandika Dwi Rahmi Relva Rambe, Pahala Roy Ramot S Hutasoit, Ramot S Rasoel Hamidy Reza Ambar Wati Rica Purnama Sari Rina D'rita Sibagariang Rina Susanti Rinu Maido Rio Syahputra Robileo Agus Romauli, Junita Romel Kefriansa Putra Romi Fadli Syahputra Sampe Harahap Sanora, Fifi Siburian, Hendra Yosep Sidabalok, Westy Yulia Sihombing, Tumpal Simanjuntak, Naomi Sipahutar, Alan Nuari Siregar, Rafly Fadiansyah Siti Ramlah Hasibuan Sitorus, Gideon Dody Tama Situmorang, Nesi Silvia Sofyan Husein Siregar Sri Aslinda, Sri Sri Fitria Retnawaty Sri Wulandari Suardi Tarumun Suci Monika Putri Sutikno, Sigit suwondo suwondo Syafruddin Nasution Syahminan Syahminan Syahril Nedi Syaiful Anwar Syaputra, Eldy Syofyan Siregar Thamrin Thamrin Thamrin Thamrin Tri Radiko Felik Usman Muhammad Tang Visius Uracha Sisochi Wau Wahyu Novra Wanda Wardana, Rangga Wati, Reza Ambar Widuri, Falsabila Windarti Windarti Yeeri Badrun Yenica Roza Yogie Novri Yusda Yoskar Kadarisman Yudho Harjoyudanto Yusmarini Yusmarini Yusni Ikhwan Siregar Zulkifli Zulkifli Zulkifli Zulkifli Zulkifli Zulkifli Zulkifli Zulkifli Zulkifli