No abstract

Hyporheic pot samplers were used to assess the effects of a uranium contaminated site and its cleanup on the aquatic biota of an intermittent stream. The potentially affected stream was compared with an unaffected stream in a n adjacent watershed. All of the sampling locations were dry when samplers were deployed; all but one were dry a t retrieval. The communities at the two streams showed a high degree of similarity (0.84 with the MorisitaHorn index). Collembola and Hydracarina were the predominant organisms. The hyporheic zone was not being used as a refugium.