國立台灣大學生態學與演化生物學研究所; 國立台灣大學生命科學系林曜松莊鈴川梁世雄Lin, Yao-SungYao-SungLinChuang, Ling-ChuanLing-ChuanChuangLiang, Shih-HsiungShih-HsiungLiang2006-12-192018-07-062006-12-192018-07-062004http://ntur.lib.ntu.edu.tw//handle/246246/2006121215550987Habitat use was investigated for two common endemic and benthic fishes, Crossostoma lacustre and Rhinogobius candidianus, in the Hapen Creek of northern Taiwan from August 1996 to December 1998. C. lacustre and R. candidianus overlapped in mesohabitat use; both fish species preferred riffles to pools. Further analyses based on stepwise multiple regression showed that fish density was significantly correlated with water depth, small boulder, and finer substrate for C. lacustre, but correlated with water depth, stream width, large boulder, and cobble for R. candidianus. The separation in the microhabitat use might have alleviated the pressure for interspecific competitions despite of their overlapping in the mesohabitat scale. Parallelly, the result suggests that the diverse substratum composition may have accounted for the co-exsitence of these two benthic fishes. It would also provide valuable information for habitat management and ecological engineering of mountain creeks in Taiwan.application/pdf170495 bytesapplication/pdfzh-TWCrossostoma lacustreRhinogobius candidianusRifflePoolTaiwanotherhttp://ntur.lib.ntu.edu.tw/bitstream/246246/2006121215550987/1/11600183919261829677.pdf