Fish assemblages in pampean streams (Buenos Aires, Argentina): Relationship to abiotic and anthropic variables
- Paracampo, Ariel Hernán
- Marrochi, María Natalia
- Garcia, Ignacio Daniel
- Maiztegui, Tomás
- Carriquiriborde, Pedro
- Bonetto, Carlos Alberto
- Mugni, Hernan Diego
DOIAbstract
The study reported here assesses the effect of natural and anthropic environmental variables on the fish assemblages in the pampean streams, in the coastal strip along the Río de la Plata, Buenos Aires province, Argentina. Five streams were sampled at 12 sites surrounded by land devoted to different uses. A correspondence analysis sorted the streams into two groups: a less impacted group formed by sites surrounded by livestock- raising pastures and a more impacted one passing through urban sites and including a stream adjacent to a modest rural urbanization plus a dairy in the stream´s basin. The nutrient concentrations were significantly higher in the more impacted group; with species richness, diversity, abundance, and biomass being signi...
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