Record Display for the EPA National Library Catalog


Main Title Effects of River Fluctuations Resulting from Hydroelectric Peaking on Selected Aquatic Invertebrates.
Author MacPhee, Craig ; Brusven., M. A. ;
CORP Author Idaho Univ., Moscow. Water Resources Research Inst.
Year Published 1974
Report Number DI-14-01-0001-3512; OWRR-A-035-IDA; W74-07830 ; OWRR-A-035-IDA(2)
Stock Number PB-232 268
Additional Subjects Invertebrates ; Stream flow ; Aquatic biology ; Littoral drift ; Insects ; Animal migrations ; Tolerances(Physiology) ; Temperature gradients ; Exposure ; Sampling ; Dworshak Dam ; Clearwater River ; Idaho ; Aquatic insects ; Dicosmoecus ; Pteronarcys californica
Library Call Number Additional Info Location Last
NTIS  PB-232 268 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 31p
Near-shore variation in number and weight of riffle insects was shown to be affected by changes in depth (15, 30 and 45 cm) and current velocity, interacting with date and station of sampling. This differential littoral distribution of riffle insects resulted in variation of the littoral community structure. In the non-fluctuating system, community diversity and diversity per individual decreased with increasing depths to 45 cm and current velocity to 1.1m/sec. Insects tested in the laboratory demonstrated variability in temperature-exposure tolerances. The case-bearing caddisfly, Dicosmoecus sp., was generally more tolerant than the stonefly, Pteronarcys californica, at most temperature regimes. (Modified author abstract)