Gomiero L M, Braga F M S
Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, CEP 13506-900, Rio Claro, SP, Brazil.
Braz J Biol. 2006 Feb;66(1A):75-83. doi: 10.1590/s1519-69842006000100010. Epub 2006 May 2.
The study site is located in an environmentally protected area known as an "APA" in São Pedro and Analândia, State of São Paulo, southeastern Brazil, whose watercourses are under strong anthropogenic pressure. Two basins were studied (sub-basin of the Corumbataí River and basin of the Jacaré-pepira River) with the purpose of characterizing the ichthyofauna of various streams, comparing fish diversity among assemblages. The Passa-cinco River showed the highest diversity (H'), and the Jaccard and Morisita-Horn indices showed low similarity among sites and between the basins. Diversity was correlated with the number of available habitats and with the environmental conditions.
研究地点位于巴西东南部圣保罗州圣佩德罗和阿纳兰迪亚一个被称为“APA”的环境保护区，其水道受到强大的人为压力。为了描述各溪流的鱼类区系，比较不同群落之间的鱼类多样性，对两个流域（科伦巴泰河次流域和雅卡雷-佩皮拉河流域）进行了研究。帕萨-辛科河的多样性最高（H'），雅卡德指数和莫里西塔-霍恩指数显示，各地点之间以及流域之间的相似度较低。多样性与可用栖息地的数量以及环境条件相关。
