文章基本信息

标题：Habitat Use of the Grazing Goby ( Sicyopterus japonicus ) in Response to Spatial Heterogeneity in Riparian Shade
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作者：Shin-ichiro Abe ; Kei'ichiro Iguchi ; Sayaka Ito 等
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：2003
卷号：18
期号：1
页码：161-167
DOI：10.1080/02705060.2003.9663962
出版社：Taylor & Francis
摘要：The local density of the grazing goby (Sicyopterus japonicus) and benthic algal production were investigated in a 720 m reach of the Sate River in the northern part of Okinawa Island, Japan. The reach was spatially heterogenous in riparian shade and was divided into three segments (open-canopy, shaded and patchy segment) based on vegetation cover. In the reach, the goby was more abundant in the open-canopy segment and open-canopy patches than in the adjacent shaded segment and shaded patches. Between the open-canopy and shaded segments there was no significant difference in the algal biomass; however, the algal growth rate was greater in the open-canopy segment than in the shaded segment. These results indicate that the spatial heterogeneity in riparian shade controls the habitat use of the goby, with open-canopy areas with high algal renewal rates being preferred.