This study attempted to examine the relationships between landscape features and fish abundance in a mountain stream of Taiwan with GIS analysis and multiple regressions. The study tried to prove availability to make prediction of fish distribution with GIS analysis on landscape features. The study area is along the middle part of Cishan Stream catchment, Kaoshiung City, Taiwan. Documented data of fish abundance and landscape features were used for the analysis. Five buffer radii, 100, 300, 500, 1000, and 1500 meters, were applied for buffer analysis to get landscape features of different spatial scales, including stream length, stream sinuosity, average altitude, and average slope. The regression results showed that density of Acrossocheilus paradoxus was highly related to 300 meters landscape features, but densities of Candidia barbata and Onychostoma alticorpus were not significant related to landscape feathers of any scale. The dry-wet seasonal results revealed that wet season density of Acrossocheilus paradoxus was related to landscape features within 300 meters in 2002 and within 1000 meters in 2003. In the other hand, density of Onychostoma barbatula also was related with landscape features within 1000 and 1500 meters in wet season of 2002 and 2003, and in dry season of 2002 and 2004.
|Number of pages||9|
|Journal||Journal of Taiwan Agricultural Engineering|
|Publication status||Published - 2012 Jan|
All Science Journal Classification (ASJC) codes
- Agricultural and Biological Sciences(all)