| Comparison of competitive ability between native and introduced salmonids: evidence from pairwise contests Hasegawa, K., Yamamoto, T., Murakami, M. & Maekawa Ichthyological Research 51, 191-194, 2004 | 82 | 2004 |
| The effects of introduced salmonids on two native stream-dwelling salmonids through interspecific competition KHK Maekawa Journal of Fish Biology 68, 1123－1132, 2006 | 77 | 2006 |
| Genetic evaluation of translocation in artificially isolated populations of white-spotted charr (Salvelinus leucomaenis). H Yamamoto, S., Maekawa, K., Tamate, T., Koizumi, I Fisheries Research 78, 352－358, 2006 | 64 | 2006 |
| Invasions of rainbow trout and brown trout in Japan: A comparison of invasiveness and impact on native species K Hasegawa Ecology of Freshwater Fish 29 (3), 419-428, 2020 | 51 | 2020 |
| Potential of habitat complexity for mitigating interference competition between native and nonnative salmonid species. K Hasegawa, K. & Maekawa Canadian Journal of Zoology 86, 386－393, 2008 | 40 | 2008 |
| Evidence for interspecific hybridization between native white‐spotted charr Salvelinus leucomaenis and non‐native brown trout Salmo trutta on Hokkaido Island … S Kitano, K Hasegawa, K Maekawa Journal of Fish Biology 74 (2), 467-473, 2009 | 38* | 2009 |
| Different longitudinal distribution patterns of native white-spotted charr and nonnative brown trout in Monbetsu stream, Hokkaido, northern Japan. K Hasegawa, K. & Maekawa Ecology of Freshwater Fish. 17, 189-192, 2008 | 34 | 2008 |
| Role of visual barriers on mitigation of interspecific interference competition between native and nonnative salmonids. K Hasegawa, K. & Maekawa Canadian Journal of Zoology 87, 781－786., 2009 | 30 | 2009 |
| Effects of hatchery chum salmon fry on density-dependent intra-and interspecific competition between wild chum and masu salmon fry K Hasegawa, K Morita, K Ohkuma, T Ohnuki, Y Okamoto Canadian Journal of Fisheries and Aquatic Sciences 71 (10), 1475-1482, 2014 | 29 | 2014 |
| Temperature‐dependent competition between juvenile salmonids in small streams J Watz, Y Otsuki, K Nagatsuka, K Hasegawa, I Koizumi Freshwater Biology 64 (8), 1534-1541, 2019 | 28 | 2019 |
| Hybridization between native white-spotted charr and nonnative brook trout in the upper Sorachi River, Hokkaido, Japan S Kitano, S Ohdachi, I Koizumi, K Hasegawa Ichthyological Research 61, 1-8, 2014 | 26 | 2014 |
| Small biased body size of salmon fry preyed upon by piscivorous fish in riverine and marine habitats K Hasegawa, K Honda, T Yoshiyama, K Suzuki, S Fukui Canadian Journal of Fisheries and Aquatic Sciences 78 (5), 631-638, 2021 | 24 | 2021 |
| The density dependent interspecific competition between nonnative salmonids, rainbow trout and brown trout K Hasegawa Environmental Biology of Fishes 99 (4), 433-438, 2016 | 24 | 2016 |
| Food habits of introduced brown trout and native masu salmon are influenced by seasonal and locational prey availability K Hasegawa, K., Yamazaki, C., Ohta, T. & Ohkuma Fisheries Science 78, 1163－1171, 2012 | 24 | 2012 |
| The relationship between the snowmelt flood and the establishment of non-native brown trout (Salmo trutta) in streams of the Chitose River, Hokkaido, northern Japan. F Kawai, H., Ishiyama, N., Hasegawa, K. & Nakamura Ecology of Freshwater Fish 22, 645－653, 2013 | 23 | 2013 |
| Evidence that an ontogenetic niche shift by native masu salmon facilitates invasion by nonnative brown trout. M Hasegawa, K., Yamazaki, C., Ohkuma, K. & Ban Biological Invasions 14, 2049－2056, 2012 | 23 | 2012 |
| Habitat niche separation of the nonnative rainbow trout and native masu salmon in the Atsuta River, Hokkaido, Japan. S Hasegawa, K., Yamamoto, T. & Kitanishi Fisheries Science 76, 251－256, 2010 | 23 | 2010 |
| Effect of habitat components on competitive interaction between native white-spotted charr and introduced brown trout K Hasegawa, K. & Maekawa Journal of Freshwater Ecology 21, 475－480, 2006 | 23 | 2006 |
| Effects of competitor density and physical habitat structure on the competitive intensity of territorial white-spotted charr (Salvelinus leucomaenis). S Hasegawa, K. & Yamamoto Journal of Fish Biology. 74, 213－219, 2009 | 21 | 2009 |
| The effect of flow regime on the occurrence of interference and exploitative competition in a salmonid species, white-spotted char (Salvelinus leucomaenis) K Hasegawa, S Yamamoto Canadian Journal of Fisheries and Aquatic Sciences 67 (11), 1776-1781, 2010 | 19 | 2010 |
Maekawa Koji北海道大学名誉教授Verified email at apost.plala.or.jp