naa a22 4500 510737870 CHVBK 20180411083017.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11284-013-1073-6 doi (NATIONALLICENCE)springer-10.1007/s11284-013-1073-6 Diurnal bottom feeding of predator fish strengthens trophic cascades to benthic algae in experimental flow-through pools [Elektronische Daten] [O. Katano, T. Natsumeda, N. Suguro] Mechanisms that determine the strength of trophic cascades from fish to benthic algae via algivorous invertebrates in stream communities have not been clarified. Using seven fish species, we tested the hypothesis that the interspecific variation of predatory behavior of fishes affects the strength of trophic cascades in experimental streams. One or two species of fish were introduced into flow-through pools of 2.5m2 and the abundances of benthic invertebrates and algae were monitored. Pike gudgeon, a diurnal benthic feeder, triggered a strong trophic cascade but masu salmon, a diurnal drift feeder, did not have a cascading effect. Japanese dace, which is both a diurnal benthic and drift feeder, increased the algal biomass, but the nocturnal benthic feeder cut-tailed bullhead had little cascading effect. The diurnal benthic feeder silver crucian carp also had a cascading effect, but no trophic cascade was triggered either by Asian pond loach or by Japanese common catfish, both of which are nocturnal benthic feeders. Thus, diurnal benthic fish exerted a stronger cascading effect than diurnal drift feeders or nocturnal fish. The combination of two fish species enhanced the per-capita strength of trophic cascades, probably because one of the two species, the benthic feeder, preyed on more invertebrates than in the single-species pools. The Ecological Society of Japan, 2013 Aquatic invertebrates nationallicence Benthic algae nationallicence Food web nationallicence Freshwater fish nationallicence Indirect effect nationallicence Katano O. National Research Institute of Aquaculture, Fisheries Research Agency, 1088 Komaki, 386-0031, Ueda, Japan aut Natsumeda T. Department of Animal-Environment System Science, Faculty of Risk and Crisis Management, Chiba Institute of Science, 15-8 Shiomi-cho, 288-0025, Choshi, Japan aut Suguro N. Freshwater Fisheries Experiment Station, Kanagawa Prefectural Fisheries Technology Center, 3657 Oshima, Midori-ku, 252-0135, Sagamihara, Japan aut Ecological Research Springer Japan 28/5(2013-09-01), 907-918 0912-3814 28:5<907 2013 28 11284 https://doi.org/10.1007/s11284-013-1073-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-013-1073-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Katano O. National Research Institute of Aquaculture, Fisheries Research Agency, 1088 Komaki, 386-0031, Ueda, Japan aut NATIONALLICENCE 700 1- Natsumeda T. Department of Animal-Environment System Science, Faculty of Risk and Crisis Management, Chiba Institute of Science, 15-8 Shiomi-cho, 288-0025, Choshi, Japan aut NATIONALLICENCE 700 1- Suguro N. Freshwater Fisheries Experiment Station, Kanagawa Prefectural Fisheries Technology Center, 3657 Oshima, Midori-ku, 252-0135, Sagamihara, Japan aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/5(2013-09-01), 907-918 0912-3814 28:5<907 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer