Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Interacting Effects of Minimum Flow and Fluctuating Shorelines on Benthic Stream Insects
A 50 mile (80 km) reach of the Clearwater River, Idaho was studied from its confluence with the Snake River upstream to Orofino, Idaho. The study examined two important changes in the River: (1) effects of hydropower releases from Dworshak Dam on the aquatic insect community in the free flowing reach of the Clearwater River, and (2) backwater effects of Lower Granite Dam on benthos in the lower five mile (8 km) of the Clearwater River. While small to moderate shifts in seasonal densities of principal species have occurred between intensive study sites above and below the influence of Dworshak Dam, evidence does not indicate these shifts are attributable to hydropower releases. Drift rates and standing crop relationships above and below the influence of Dworshak Dam suggest insects drifted more in response to daily fluctuations than to the factor of bottom density.
Interacting Effects of Minimum Flow and Fluctuating Shorelines on Benthic Stream Insects
A 50 mile (80 km) reach of the Clearwater River, Idaho was studied from its confluence with the Snake River upstream to Orofino, Idaho. The study examined two important changes in the River: (1) effects of hydropower releases from Dworshak Dam on the aquatic insect community in the free flowing reach of the Clearwater River, and (2) backwater effects of Lower Granite Dam on benthos in the lower five mile (8 km) of the Clearwater River. While small to moderate shifts in seasonal densities of principal species have occurred between intensive study sites above and below the influence of Dworshak Dam, evidence does not indicate these shifts are attributable to hydropower releases. Drift rates and standing crop relationships above and below the influence of Dworshak Dam suggest insects drifted more in response to daily fluctuations than to the factor of bottom density.
Interacting Effects of Minimum Flow and Fluctuating Shorelines on Benthic Stream Insects
M. Brusven (Autor:in) / E. W. Trihey (Autor:in)
1978
88 pages
Report
Keine Angabe
Englisch
Hydrology & Limnology , Ecology , Zoology , Aquatic animals , Insects , Animal ecology , Stream flow , Clearwater River , Electric power plants , Abundance , Distribution(Property) , Seasonal variations , Dworshak Dam , Dewatering , Idaho , Low flow , Species diversity , Reservoir releases , Habitats
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