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- Title
Habitat and Fish Fauna Structure in a Subtropical Mountain Stream in Taiwan before and after a Catastrophic Typhoon.
- Authors
Siong Tew, Kwee; Han, Chiao-Chuan; Chou, Wei-Rung; Fang, Lee-Shing
- Abstract
Habitats and fish populations of a subtropical mountain stream in Taiwan were surveyed before and after the hit of super-typhoon Herb in July 1996. There was a significant decrease in total pool area and an increase in total riffle area. Upper stream habitat was more susceptible to the disturbance. Relative abundance of the species was significantly correlated before and after the typhoon (rs=0.89, p<0.001). Morisita's index of similarity for the fish communities in June 1996 and October 1997 ranged between 0.82 and 1.02 for seven out of nine stations. Most common cyprinids decreased in densities after Herb, but recovered seventeen months after the typhoon. There were only minor changes in fish community fourteen months after the typhoon. Cyprinids that are smaller in size, such as Candidia barbata and Abottina brevirostris alticorpus were affected the most. Gobiid Rhinogobius nantaiensis that is well adapted to riffle habitat was unaffected throughout the surveys. The results of this study suggested that in subtropical mountain stream, severe typhoon may significantly alter the habitats, but the impact on fish populations could be relatively small due to features of these mountain species.
- Subjects
TAIWAN; FISHES; FISHERIES; TYPHOONS; CYPRINIDAE; FISH populations
- Publication
Environmental Biology of Fishes, 2002, Vol 65, Issue 4, p457
- ISSN
0378-1909
- Publication type
Article
- DOI
10.1023/A:1021111800207