caa a22 4500 477115640 CHVBK 20180405111621.0 cr unu---uuuuu 170330e19960401xx s 000 0 eng 10.1007/BF00005013 doi (NATIONALLICENCE)springer-10.1007/BF00005013 Comparison of fish assemblages among an artificial reef, a natural reef and a sandy-mud bottom site on the shelf off Iwate, northern Japan [Elektronische Daten] [Toshihiko Fujita, Daiji Kitagawa, Yusaku Okuyama, Yasutoshi Jin, Yoshio Ishito, Tadashi Inada] Synopsis: Fish assemblages at an artificial reef site, a natural reef site and a sandy-mud bottom site, on the shelf (depth 130 m) off Iwate Prefecture, northern Japan, were surveyed by using a bottom trammel net from May 1987 to March 1993. A total of 12 173 fishes of 48 species were recorded. Physiculus maximowiczi was dominant and comprised 69% of the total numerical abundance. Total fish number was lowest in March at all the 3 sites when P. maximowiczi migrated to deeper and warmer waters. Assemblage equitability and species diversity also varied seasonally in accordance with the abundance fluctuation of P. maximowiczi. P. maximowiczi, Alcichthys alcicornis and Hexagrammos otakii were more abundant at the artificial reef and natural reef sites, while Dexistes rikuzenius and Hemitripterus villosus were more abundant at the sandy-mud bottom site; total fish abundance was largest at the artificial reef site mainly due to the large number of P. maximowiczi. Species richness was similar among sites, but equitability, and consequently species diversity, was lowest at the artificial reef site. The main effect of the artificial reef seemed the attraction of P. maximowiczi from nearby bottoms, especially from natural rocky reefs; its large abundance determined the structure of the artificial reef fish community. Kluwer Academic Publishers, 1996 Community nationallicence Density nationallicence Species diversity nationallicence Seasonality nationallicence Physiculus maximowiczi nationallicence Fujita Toshihiko National Science Museum, Hyakunin-cho 3-23-1, Shinjuku, 169, Tokyo, Japan aut Kitagawa Daiji Tohoku National Fisheries Research Institute, Hachinohe, Shimo-mekurakubo 25-259, Same, 031, Hachinohe, Japan aut Okuyama Yusaku Iwate Prefectural Government, Uchimaru 10-1, 020, Morioka, Japan aut Jin Yasutoshi Miyako Regional Development of Bureau of Iwate Prefectural Government, Satsuki 1-20, 027, Miyako, Japan aut Ishito Yoshio Tohoku National Fisheries Research Institute, Hachinohe, Shimo-mekurakubo 25-259, Same, 031, Hachinohe, Japan aut Inada Tadashi Japan Sea National Fisheries Research Institute, Suido-cho 1-5939-22, 951, Niigata, Japan aut Environmental Biology of Fishes Kluwer Academic Publishers 46/4(1996-04-01), 351-364 0378-1909 46:4<351 1996 46 10641 https://doi.org/10.1007/BF00005013 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00005013 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fujita Toshihiko National Science Museum, Hyakunin-cho 3-23-1, Shinjuku, 169, Tokyo, Japan aut NATIONALLICENCE 700 1- Kitagawa Daiji Tohoku National Fisheries Research Institute, Hachinohe, Shimo-mekurakubo 25-259, Same, 031, Hachinohe, Japan aut NATIONALLICENCE 700 1- Okuyama Yusaku Iwate Prefectural Government, Uchimaru 10-1, 020, Morioka, Japan aut NATIONALLICENCE 700 1- Jin Yasutoshi Miyako Regional Development of Bureau of Iwate Prefectural Government, Satsuki 1-20, 027, Miyako, Japan aut NATIONALLICENCE 700 1- Ishito Yoshio Tohoku National Fisheries Research Institute, Hachinohe, Shimo-mekurakubo 25-259, Same, 031, Hachinohe, Japan aut NATIONALLICENCE 700 1- Inada Tadashi Japan Sea National Fisheries Research Institute, Suido-cho 1-5939-22, 951, Niigata, Japan aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Kluwer Academic Publishers 46/4(1996-04-01), 351-364 0378-1909 46:4<351 1996 46 10641 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer