Patterns of diversity, altitudinal range and body size among freshwater fishes in the Yangtze River basin, China

作     者：Fu, CZ Wu, JH Wang, XY Lei, GC Chen, JK 

作者机构：Fudan Univ Inst Biodivers Sci Shanghai 200433 Peoples R China Fudan Univ Minist Educ Key Lab Biodivers Sci & Ecol Engn Shanghai 200433 Peoples R China 

出 版 物：《GLOBAL ECOLOGY AND BIOGEOGRAPHY》 (全球生态学与生物地理学快报)

年 卷 期：2004年第13卷第6期

页      面：543-552页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0705[理学-地理学] 0713[理学-生态学] 

主　　题：Bergmann's rule body size China diversity elevational gradient freshwater fish geographical range macroecology Rapoport's rule Yangtze River 

摘      要：Aim To document patterns in diversity, altitudinal range and body size of freshwater fishes along an elevational gradient in the Yangtze River basin. Location The Yangtze River basin, China. Methods We used published data to compile the distribution, altitudinal range and body size of freshwater fishes. Correlation, regression, clustering and graphical analyses were used to explore patterns in diversity, altitudinal range and body size of freshwater fishes in 100-m elevation zones from 0 to 5200 m. Results Species richness patterns across the elevational gradient for total, non-endemic and endemic fishes were different. The ratio of endemics to total richness peaked at mid elevation. Land area on a 500-m interval scale explained a significant amount of the variation in species richness. Species density displayed two peaks at mid-elevation zones. The cluster analysis revealed five distinct assemblages across the elevation gradient. The relationship between elevational range size and the midpoint of the elevational range revealed a triangular distribution. The frequency distribution of log maximum standard length data displayed an atypical right-skewed pattern. Intermediate body sizes occurred across the greatest range of elevation while small and large body sizes possessed only small elevational amplitudes. The size-elevation relationship between the two major families revealed a very strong pattern of body size constraint among the Cobitidae with no corresponding elevational constraint and a lot of body size and elevational diversification among the Cyprinidae. Main conclusion The data failed to support either Rapoport s rule or Bergmann s rule.