| Kualitas Air Sungai Cisadane, Jawa Barat-Banten R Siahaan, A Indrawan, D Soedharma, LB Prasetyo Jurnal Ilmiah Sains, 268-273, 2011 | 91 | 2011 |
| Populasi Kupu-kupu (Lepidoptera) di Pulau Mantehage, Sulawesi Utara DC Lamatoa, R Koneri, R Siahaan, PV Maabuat Jurnal Ilmiah Sains, 52-56, 2013 | 58 | 2013 |
| Keanekaragaman Makrozoobentos sebagai Indikator Kualitas Air Sungai Cisadane, Jawa Barat –Banten (Macrozoobenthos diversity as indicator of water quality of Cisadane River) R Siahaan Jurnal Bios Logos 2 (1), 2012 | 36 | 2012 |
| Jenis-jenis vegetasi riparian sungai ranoyapo, minahasa selatan R Siahaan, NS Ai Jurnal LPPM Bidang Sains dan Teknologi 1 (1), 7-12, 2014 | 34 | 2014 |
| Keanekaragaman Vegetasi Riparian Di Sungai Tewalen, Minahasa Selatan-Sulawesi Utara AH Bando, R Siahaan, MD Langoy Jurnal Ilmiah Sains, 7-11, 2016 | 18 | 2016 |
| Biologi Konservasi S Sumarto, HEI Simbala, R Koneri, R Siahaan, P Siahaan CV. Patra Media Gravindo, 2012 | 18 | 2012 |
| Kehadiran Logam-Logam Berat (Pb, Cd, Cu, Zn) Pada Air dan Sedimen Sungai Lowatag, Minahasa Tenggara-Sulawesi Utara (The Occurrence of Heavy Metals (Pb, Cd, Cu, Zn) on Water and … JO Patty, R Siahaan, PV Maabuat Jurnal Bios Logos 8 (1), 2018 | 17 | 2018 |
| Keanekaragaman vegetasi riparian sungai polimaan, minahasa selatan–sulawesi utara (riparian vegetation diversity of polimaan river, south minahasa-sulawesi utara) WP Bental, R Siahaan, PV Maabuat Jurnal Bios Logos 7 (1), 2017 | 14 | 2017 |
| Analisis Kualitatif Residu Pestisida Profenofos Pada Tanaman Tomat Di Kecamatan Langowan Barat Sulawesi Utara WC Wariki, R Siahaan, M Rumondor Jurnal Ilmiah Sains, 48-51, 2015 | 12 | 2015 |
| Makrozoobentos sebagai Indikator Biologis dalam Menentukan Kualitas Air Sungai Ranoyapo, Minahasa Selatan, Sulawesi Utara R Marmita, R Siahaan, R Koneri, ML Langoy Jurnal Ilmiah Sains 13 (1), 57-61, 2013 | 11 | 2013 |
| Kepadatan Cacing Tanah pada Lahan Pertanian Tomat Terpapar Pestisida di Desa Ampreng, Kecamatan Langowan Barat-Provinsi Sulawesi Utara (Earthworm Density in Tomato Farming … Y Tribrata, R Siahaan, JJ Pelealu, SM Mambu Jurnal Bios Logos 5 (1), 2015 | 10 | 2015 |
| Water quality of cisadane river, West Java-Banten R Siahaan, A Indrawan, D Soedharma, LB Prasetyo Jurnal Ilmiah Sains 11 (2), 268-273, 2011 | 10 | 2011 |
| Pentingnya mempertahankan vegetasi riparian R Siahaan Makalah Pribadi, 1-8, 2004 | 10 | 2004 |
| Population of butterflies (Lepidoptera) in Mantheage Island, North Sulawesi DC Lamatoa, R Koneri, R Siahaan, PC Maabuat Jurnal Ilmiah Sains 13 (1), 52-56, 2013 | 9 | 2013 |
| Partial Submergence Tolerance in Rice (Oryza sativa L.) Cultivated in North Sulawesi at the Vegetative Phase. A Nio, R Siahaan Pakistan Journal of Biological Sciences: PJBS 22 (2), 95-102, 2019 | 8 | 2019 |
| Kekayaan Dan Potensi Senyawa Bioaktif Makroalga Di Pesisir Atep Oki, Kabupaten Minahasa, Sulawesi Utara SD Winowoda, MFO Singkoh, R Siahaan Jurnal Pesisir Dan Laut Tropis 8 (3), 7-16, 2020 | 6 | 2020 |
| Anatomical characteristics of stomata, mesophyll and petiole of six varieties sweet potatoes (Ipomoea batatas L.) after organic fertilizer induction HL Rampe, SD Umboh, R Siahaan, PV Maabuat IOP Conference Series: Materials Science and Engineering 567 (1), 012044, 2019 | 5 | 2019 |
| Kualitas Air Sungai Cisadane, Jawa Barat-Banten (Water Quality of Cisadane River, West Java-Banten) Water Quality Of Cisadane River, West Java-Banten R Siahaan, A Indrawan, D Soedharma, LB Prasetyo Jurnal Imliah Sains 11 (9), 2, 2011 | 5 | 2011 |
| The effect of Kepok Banana (Musa Paradisiaca L.) on immunoglobulin, vitamins, and cholesterol content of eggs in laying hens JR Leke, E Wantasen, R Siahaan, F Sompie, C Kaunang, T Widjastuti, ... Journal of World's Poultry Research 12 (1), 46-51, 2022 | 4 | 2022 |
| Peranan Vegetasi Riparian dalam Mempertahankan Kualitas Air Sungai Cisadane (Disertasi) R Siahaan Bogor: Sekolah Pascasarjana, Institut Pertanian Bogor, 2012 | 4 | 2012 |
