Smith W S, Petrere M, Barrella W
Universidade Paulista, Sorocaba, SP, Brazil.
Braz J Biol. 2009 Nov;69(4):1015-25. doi: 10.1590/s1519-69842009000500005.
A fish assemblage study was accomplished in different habitats of the Sorocaba River Basin. Fish were caught with gillnets, were weighed (weight total - g) and measured (standard length - mm). Several abiotic variables of selected sampling sites were measured in order to characterise their habitats in order to attempt establishing correlations with fish community traits. Fish numbers per species were adjusted to the lognormal and logseries species/abundance models The fish community totaled 38 species, distributed in 28 genera, 14 families and 4 orders. Diversity was calculated both in number and in weight and both presented higher values in better preserved sites. We did not detect any statistical differences between dry and rainy seasons. We also concluded that the abundance distribution was not influenced by abiotic variables.
在索罗卡巴河流域的不同栖息地开展了一项鱼类群落研究。使用刺网捕捞鱼类，称其重量（总重量 - 克）并测量（标准长度 - 毫米）。测量了选定采样点的几个非生物变量，以表征其栖息地，试图建立与鱼类群落特征的相关性。每个物种的鱼类数量根据对数正态和对数级数物种/丰度模型进行调整。鱼类群落共有38个物种，分布在28个属、14个科和4个目中。计算了数量和重量方面的多样性，在保存较好的地点两者均呈现出较高的值。我们未检测到旱季和雨季之间存在任何统计差异。我们还得出结论，丰度分布不受非生物变量的影响。
