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All Journal International Journal of Science and Engineering (IJSE) JURNAL ENGGANO Jurnal Ilmu Kelautan Kepulauan BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Jurnal Perikanan Jurnal Abdi Insani Jurnal Inovasi Pendidikan dan Sains Ilmu Perikanan Tropis Nusantara Jurnal Pengabdian Pada Masyarakat Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan

Irwan Ramadhan Ritonga

Program Studi Ilmu Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, Universitas Mulawarman

Author-ID : 361910

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Distribution of Coral Reef and Seagrass Ecosystems’s Inorganic Carbon in the Waters of Beras Basah Bontang, East Kalimantan Irwan Ramadhan Ritonga; S. Supriharyono; Boedi Hendrarto
International Journal of Science and Engineering Vol 5, No 1 (2013)
Publisher : Chemical Engineering Diponegoro University

Inorganic carbon is closely related to the calcification process (CaCO3), which is the main constituent of coral reefs or microorganisms that exist in the oceans such as foraminifera and cocolitoporit. Inorganic carbon is also closely linked to the chemical processes that occur when carbon dioxide gas (CO2) dissolved in water. The research of inorganic carbon in the waters of Beras Basah was carried out in January, February and March 2012. The purpose of this study was to understand the distribution and concentration of total inorganic carbon (CT) in coral reef and seagrass ecosystems as well as the correlation of Beras Basah. The results showed that the concentration of total inorganic carbon (CT) in January average 1166.503 μmol/kgSW, February average 1115.599 μmol/kgSW, and then in March the average 987.443 μmol/kgSW. Distribution patterns of total inorganic carbon (CT) is vectoral, where in January, the concentration of total inorganic carbon (CT) was highest in the Southeast region, was in February in the South and Southeast, while in March shifted to North region of Beras Basah Island. The concentration difference is thought to be influenced by pH and the seasons, tides, biochemical processes, and biological activity. Doi: 10.12777/ijse.5.1.1-5 [How to cite this article: Ritonga, I.R., Supriharyono, and Henderarto, B. (2013). Distribution of Coral Reef and Seagrass Ecosystems’s Inorganic Carbon in the Waters of Beras Basah Bontang, East Kalimantan. International Journal of Science and Engineering, 5(1),1-6. Doi: 10.12777/ijse.5.1.1-5]

ANALISIS RESIKO KESEHATAN PENCEMARAN LOGAM BERAT PADA TIRAM (Saccostrea cucullata) DI PESISIR SALO PALAI, PROPINSI KALIMANTAN TIMUR Irwan Ramadhan Ritonga; Muchlis Effendi; Hamdhani Hamdhani
JURNAL ENGGANO Vol 3, No 2
Publisher : Universitas Bengkulu

Tiram di pesisir Salo Palai, Muara Badak sangat rentan terkontaminasi oleh logam berat yang disebabkan oleh berbagai faktor lingkungan seperti terjadi secara alami, aktivitas antropogenik, perubahan iklim, dan bioakumulasi pencemaran lingkungan. Tiram (Saccostrea cucullata) dipilih untuk deteksi logam berat, dikarenakan tiram merupakan salah satu makanan laut yang dikonsumsi oleh penduduk di Salo Palai. Konsentrasi kadar Pb, Cd, dan Cu pada tiram ditentukan dengan metode destruksi asam dan AAS (Atomic Absorption Spectrophotometer). Penilaian resiko dilakukan untuk menentukan total paparan logam berat di masyarakat pesisir Salo Palai. Berdasarkan hasil analisis, konsentrasi rata-rata Pb dan Cd pada tiram lebih rendah dari Uni Eropa (2006), BSN (2009), dan China (2013), sedangkan rata –rata konsentrasi Cu rata-rata lebih tinggi dari standar Dirjen POM (1989). Kisaran nilai perkiraan asupan harian (EDI) oleh masyarakat untuk masing masing Pb (0.0000 – 0.0001) g/hari/kg, Cd (0.0000 – 0.0001) ?g/hari/ kg, dan Cu (0.0013 - 0,0213) ?g/hari/kg. Kemudian, kisaran nilai bahaya target (THQ) untuk Pb (0.0015 – 0.0249), Cd (0.0055 – 0.0913), dan Cu (0.0319 – 0.5321). Secara umum, semua nilai THQ pada tiram lebih rendah dari 1.0. Berdasarkan penelitian ini, disimpulkan bahwa tiram yang berasal dari pesisir Salo Palai, Kalimantan Timur masih layak untuk dikonsumsi, dan tidak ada efek buruk yang terjadi bagi masyarakat yang terpapar Pb, Cd, dan Cu.

PENANAMAN Rizophora mucronata SEBAGAI KEPEDULIAN LINGKUNGAN PESISIR DI DESA KUALA SAMBOJA, KALIMANTAN TIMUR Irwan Ramadhan Ritonga; Iwan Suyatna; Ristiana Eryati; Dewi Embong Bulan; Mohammad Sumiran Paputungan; Irma Suryana; Widya Kusumaningrum; Nurfadilah Nurfadilah; Rani Novia; Ahmad Ahmad
Jurnal Abdi Insani Vol 9 No 3 (2022): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v9i3.678

The condition of the Mahakam Delta area, especially the coastal region of Kuala Samboja, Kutai Kartanegara Regency has been decreased due to coastal abrasion and several human activities. As a result, several ecological and economic functions of the mangrove ecosystem on the coast of Kuala Samboja have been dropped. One of the alternative activities carried out by individuals and groups to protect and improve the coastal environment of Kuala Samboja due to the impact of coastal abrasion and human activities is to plant mangrove seedlings. The purpose of this community service activity was to increase knowledge, awareness and concern by academics and students towards the preservation of the coastal environment in Kutai Kartanegara Regency by planting Rizophora mucronata seeds. The mangrove seedling planting activity was carried out on May 30, 2022 in Kuala Samboja Village, Kutai Kartanegara Regency after the student practical course activities were completed. The method used in this activity is a lecture followed by demonstration activities for planting mangrove seedlings for the participants. The result of this community service activity was the planting of 400 seeds of Rizophora mucronata in areas affected by human exploitation and abrasion in the village of Kuala Samboja. The beach clean-up activities have been carried out by the participants around the planting of mangrove seedlings in order to maintain the cleanliness of the coastal environment by collecting various types of garbage scattered around the beach. Several evaluations of activities from the participants were found from the results of mangrove seedling activities, such as the maintenance process, data collection, and monitoring of mangrove seedlings that may need to be carried out by the participants. Therefore, an evaluation of this activity should be carried out by the activity participants to make the successful planting of mangrove seedlings. In general, the planting of mangrove seedlings may increase the knowledge, awareness and concern of the participants for the mangrove ecosystem in Kuala Samboja village. In addition, the collaboration between lecturers, local government and local communities during the planting of mangrove seedlings on the coast of Kuala Samboja village might preserve the mangrove ecosystem in a sustainable manner.

DETEKSI FORMALIN PADA IKAN DAN SEAFOOD ASIN DARI BEBERAPA PASAR LOKAL DI KOTA SAMARINDA, KALIMANTAN TIMUR Irwan Ramadhan Ritonga; Ristiana Eryati; Akhmad Rafii
JURNAL INOVASI PENDIDIKAN DAN SAINS Vol 3 No 3 (2022): Desember
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v3i3.1181

Formalin merupakan salah satu senyawa kimia yang sering ditambahkan kepada ikan dan seafood. Padasaat paparan formalin masuk ke dalam tubuh manusia, maka hal tersebut sangat berbahaya bagi kesehatan manusia. Tujuan dari penelitian ini adalah untuk mendeteksi kandungan formalin pada sampel ikan dan seafood yang berasal dari beberapa pasar lokal di kota Samarinda. Metode penelitian ini bersifat deskriptif observational terhadap 149 sampel uji ikan dan seafood asin. Deteksi kandungan formalin pada ikan dan seafood dilakukan dengan rapid test kit. Pada saat sampel uji mengalami perubahan warna menjadi merah dan ungu, maka sampel tersebut terindikasi positif mengandung formalin. Ditemukan bahwa dari 10 dari 13 sampel ikan dan 4 dari 4 sampel seafood positif mengandung formalin. Jenis ikan dan seafood yang mengandung formalin di penelitian ini adalah layang, sarden, teri, baronang, pedak, haruan laut, kepala batu, kaca-kaca, tenggiri, hiu cucut, cumi, udang ebi, udang papay dan baby cumi. Penelitian ini menyarankan bahwa konsumen harus lebih berhati-hati untuk membeli ikan dan seafood yang mengandung formalin.

Survei tingkat konsumsi ikan laut di Kalimantan Timur Irwan Ramadhan Ritonga; Anugrah Aditya Budiarsa
Jurnal Ilmu Kelautan Kepulauan Vol 5, No 2 (2022): Jurnal Ilmu Kelautan Kepulauan
Publisher : Fakultas Perikanan dan Kelautan. Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jikk.v5i2.5599

Produksi perikanan pelagis yang didaratkan di TPI Selili, Kota Samarinda: Landing of capture pelagic fishery at TPI Selili, Samarinda City Clara Frecilia Patiung; Irwan Ramadhan Ritonga; Ristiana Eryati
Jurnal Ilmu Perikanan Tropis Nusantara (Nusantara Tropical Fisheries Science Journal) Vol. 2 No. 1 (2023): Ilmu Perikanan Tropis Nusantara
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jipt.v2i1.372

Selili Fish Landed Place (TPI), Samarinda City has been built in 1900/1991 and served as an economic driver for fishing communities and ports in East Kalimantan Province. At TPI Selili, several types of pelagic fish have been landed based on the fish cached by the fisherman. However, some ordinary people in Samarinda city are not very familiar with pelagic fish names. Therefore, this study is needed to identification of pelagic fish landed at TPI Selili, Samarinda City. The purpose of this study was to identify the types of pelagic fish landed at TPI Selili. All data was collected at the TPI Selili, Samarinda City from September to October 2022. The methods used in this study were survey and interview methods. Identification of pelagic fish was conducted by matching the morphological forms of fish with fish identification books. All data from observations in the field were analyzed using Microsoft Windows Excel. All pictures and tables were described, described, and explained descriptively. It was found 6 species of small pelagic fish such as Indian scad fish, yellowtail scad, mackerel, gizzard shad, anchovies, sardines, and 3 species of large pelagic fish namely tuna, skipjack, and mackerel which landed in TPI Selili. In addition, the percentage of small pelagic fish that most landed at TPI Selili was Indian scad fish at 88.9%, and tuna at 96.1% for big pelagic fish.

ANALISIS KANDUNGAN TIMBAL (Pb) PADA SEDIMEN MANGROVE DI KAWASAN MANGROVE CENTER GRAHA INDAH, BALIKPAPAN, KALIMANTAN TIMUR Anindia Resty Syafira; Irwan Ramadhan Ritonga; Mohammad Sumiran Paputungan; Irma Suryana
Jurnal Perikanan Vol 13 No 1 (2023): JURNAL PERIKANAN
Publisher : Program Studi Budidaya Perairan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v13i1.465

Distribusi mikroplastik pada sedimen di Muara Badak, Kabupaten Kutai Kartanegara Intan Sari Dewi; Anugrah Aditya Budiarsa; Irwan Ramadhan Ritonga
Depik Vol 4, No 3 (2015): DECEMBER 2015
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Abstract. The distribution of microplastic was studied in the Muara Badak districts Kutai Kartanegara regency in May 2015. Sediment samples were taken from four stations that represent residential, in mangrove, near the beach and away from residential areas. Sediment samples were taken using the pipe at a depth of 0-10 cm - 10-20 cm, then the observed and calculated abundance of microplastic. The results showed that the type microplastic found is a fragment, film and fiber. At Station 1 found fragments about 100.2-201.3 particle/kg, the film about 69.6-79.9 particles/kg and fiber about 43.1-50.9 particles/kg, the stations 2 found of fragments about 146.5-238.8 particle/kg, the film about 53.2-81.9 particles/kg and fiber about 48.8-75.5 particles/kg, stations 3 found of fragments about 204.2-207.9 particles/kg, the film about 107.7-126.5 particle/kg and fiber about 26.1-39.9 particles/kg, station 4 found of fragments about 167.6-220 particle/kg, the film about 59.7-69.5 particle/ kg and fiber about 47.5-55.3 particles/kg. Keywords: Depth; Microplastic; Muara Badak; Sediment Abstrak. Distribusi mikroplastik diteliti di Kecamatan Muara Badak Kabupaten Kutai Kartanegara pada bulan Mei 2015. Sampel sedimen diambil dari 4 stasiun yang mewakili pemukiman penduduk, dekat sungai, dekat pantai dan jauh dari pemukiman penduduk. Sampel sedimen diambil menggunakan pipa paralon pada kedalaman 0-10 cm – 10-20 cm, kemudian diamati dan dihitung kelimpahan mikroplastik. Hasil penelitian menunjukan bahwa jenis mikroplastik yang ditemukan adalah fragmen, film dan fiber. Pada stasiun 1 ditemukan fragmen berkisar 100,2-201,3 partikel/kg, film berkisar 69,6-79,9 partikel/kg dan fiber berkisar 43,1-50,9 partikel/kg, stasiun 2 ditemukan fragmen berkisar 146,5-238,8 partikel/kg, film berkisar 53,2-81,9 partikel/kg dan fiber berkisar 48,8-75,2 partikel/kg, stasiun 3 ditemukan fragmen berkisar 204,2-207,9 partikel/kg, film berkisar 107,7-126,5 partikel/kg dan fiber berkisar 26,1-39,9 partikel/kg, stasiun 4 ditemukan fragmen berkisar 167,6-220 partikel/kg, film berkisar 59,7-69,5partikel/kg dan fiber berkisar 47,5-55,3 partikel/kg.Kata kunci: Kedalaman; Mikroplastik; Muara Badak; Sedimen

Hubungan parameter fisika-kimia perairan dengan kelimpahan plankton di Samudera Hindia bagian Barat Daya Rani Novia; Adnan .; Irwan Ramadhan Ritonga
Depik Vol 5, No 2 (2016): August 2016
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Abstract. The aims of this research was to examine the water quality parameters and plankton abundance and its relationships in the Southwestern of Indian Ocean. This is a quantitative descriptive research. Planktons were sampled using plankton net, and water samples were taken using Conductivity, Temperature, Depth (CTD) where the water samples colleted in the Nansen Bottle No. 1 (surface water) at seven sampling stations. The results showed that there were 25 species of planktons belonging into seven classes, i.e., Bacillariophyceae, Ciliate, Crustacea, Cyanobacteria, Dinophyceae, Flagellata, and Maxillopoda. The highest value of abundance of plankton was found at station 6 with 7255 ind. L-1, the value of diversity index of plankton was at moderate category, and there was no predominant species was occurred in the community. Bivariate correlation analysis results of Person's showed that the temperature and Dissolved Oxygen (DO) were positively correlated to the plankton abudance, while pH, conductivity, TDS, salinity were negatively correlated with abundances of plankton.Keywords: Abundance of plankton, linkages, water quality, Indian Ocean of Southwestern Abstrak. Penelitian ini bertujuan untuk mengetahui jenis dan kelimpahan plankton dan kualitas air serta hubungan antara kelimpahan plankton dengan parameter fisika-kimia perairan di Samudera Hindia bagian Barat Daya. Penelitian ini merupakan penelitian deskriptif kuantitatif, pengambilan sampel plankton menggunakan plankton net, dan sampel air menggunakan CTD (Conductivity, Temperature Depth) dimana sampel air yang diambil pada botol nansen No. 1 (sampel air permukaan) pada 7 titik stasiun. Hasil penelitian ditemukan 25 spesies plankton yang termasuk ke dalam 7 kelas, yaitu Bacillariophyceae, Ciliata, Crustacea, Cyanobacteria, Dinophyceae, Flagellata, dan Maxillopoda. Kelimpahan plankton tertinggi terdapat pada stasiun 6 dengan 7255 ind/L, indeks keragaman plankton pada kondisi sedang, dan tidak terjadi dominasi spesies dalam komunitas. Hasil analisis korelasi Bivariate Person’s menunjukkan suhu dan DO (Dissolved Oxygen) berkorelasi positif terhadap kelimpahan plankton, sedangkan pH, konduktifitas, TDS, salinitas berkorelasi negative dengan kelimpahan plankton. Kata kunci: Kelimpahan Plankton, Keterkaitan, Kualitas air, Samudera Hindia bagian Barat Daya

Identifikasi dan Perbandingan Komposisi Kepadatan Mesodebris pada Pantai Wisata Fadhila Nurhayati; Irwan Ramadhan Ritonga; Ristiana Eryati
BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains Vol 6 No 1 (2023): BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/bioedusains.v6i1.5720

This study aimed to determine the type, composition and density of mesodebris based on seasonal differences (periods I and II). Sampling was conducted using the purposive sampling method. There were 5 lanes of transects randomised to determine the sub-transect box. Mesodebris samples were taken by excavating surface sediments (± 3 cm) and filtered with 0.5 cm x 0.5 cm size at Lamaru beach, Balikpapan City. All samples were collected, grouped and counted to determine the type, number, weight and density of mesodebris. The analysis results showed that 6 types of mesodebris were found in the study site such as plastic, plastic foam, glass, cloth, wood and rubber. The highest mesodebris composition for the number category was plastic (80%) in period II, while the highest weight composition was found in period I at 51%. The density of mesodebris with the most number category was found in period II (1.64 amount/m2). From the results of the study it can be concluded that there was no significant difference in the mesodebris density between periods I and II at Lamaru Tourism Beach, Balikpapan City. The main sources of mesodebris in the study area come from tourist activities, local residents' activities on land, and water runoff from the Manggar River. Keywords: Balikpapan, Density, Mesodebris, Season

Co-Authors Adnan . Adnan Adnan Adnan Adnan Ahmad Ahmad Ahmad Ahmad Ahmad Ahmad Akhmad Rafii Andi Fitri Sakmiana Anindia Resty Syafira Antazilla Rindyani Anugrah Aditya Budiarsa Boedi Hendrarto Clara Frecilia Patiung Dewi Embong Bulan Dewi Embong Bulan Fadhila Nurhayati Firman Firman Firman Firman Hamdhani Hamdhani Intan Sari Dewi Irma Suryana Irma Suryana Iwan - Suyatna Iwan Suyatna Mohammad Sumiran Paputungan Muchlis Effendi Nurfadilah Nurfadilah Nurfadilah Nurfadilah Nurfadilah Nurfadilah Rani Novia Rani Novia Rani Novia Ristiana Eryati Ristiana Eryati Ristiana Eryati Ristiana Eryati Ristiana Eryati S. Supriharyono Tri Arwadi Widya Kusumaningrum Widya Kusumaningrum Widya Kusumaningrum

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