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Article: Findings from A.B.W. James et al in freshwater research reported.
- Article from:
- Ecology, Environment & Conservation
- Article date:
- November 13, 2009
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" The impacts of low flows on invertebrates were assessed in six experimental channels placed in a lowland stream. Each channel consisted of replicate stacked gravel-filled baskets (buried 0-7, 8-14 and 15-21 cm deep) from which invertebrates were sampled," investigators in Christchurch, New Zealand report.
"Samples were collected before, and 1 and 2 months after flows were reduced by varying amounts. We predicted that invertebrate communities would change most with the lowest flows that persisted longest. The effects of reduced flow on channel and intragravel-velocities, temperature, dissolved oxygen and algal biomass were also monitored. Mean velocity (17 cm ...