Araujo Francisco Gerson, Fichberg Ilana, Pinto Benjamin Carvalho Teixeira, Peixoto Magna Galvao
Laboratório Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro Km 47., Antiga Rod. Rio-SP. 23851-970 Seropedica., RJ, Brazil.
Environ Manage. 2003 Oct;32(4):516-26. doi: 10.1007/s00267-003-3003-9.
The biodiversity of many Brazilian rivers is seriously threatened by industrial and municipal pollution, and Rio Paraiba do Sul, located between two major industrial centers is one example of this situation. A survey of the fish assemblage was conducted from October 1998 to September 1999 and the data were used to develop an index of biotic integrity (IBI). We sampled three zones in bracketing a large urban-industrial complex to evaluate water quality changes and the usefulness of the IBI as a monitoring tool. Water quality was classified as poor upstream of the effluent discharges, very poor near the discharges, and poor-fair downstream of the discharges, with this latter situation revealing the current biological capacity of the river. Physical and chemical habitat characteristics were also measured at each site to construct an independent environmental index to validate the IBI. The habitat and IBI indices were highly correlated, suggesting this IBI would be applicable to other large rivers in southeast Brazil.
巴西许多河流的生物多样性受到工业和城市污染的严重威胁，位于两个主要工业中心之间的南帕拉伊巴河就是这种情况的一个例子。1998年10月至1999年9月对鱼类群落进行了调查，并将数据用于制定生物完整性指数（IBI）。我们在一个大型城市 - 工业综合体周围的三个区域进行采样，以评估水质变化以及IBI作为监测工具的有效性。废水排放上游的水质被分类为差，排放附近的水质非常差，排放下游的水质为差 - 尚可，后一种情况揭示了河流当前的生物承载能力。还在每个站点测量了物理和化学栖息地特征，以构建一个独立的环境指数来验证IBI。栖息地指数和IBI高度相关，这表明该IBI将适用于巴西东南部的其他大型河流。
