Integrated waterworks on rivers have a great impact the state of natural waterways. With commissioning hydroelectric facilities and reservoirs that regulate river flow, new hydrological channel regime is created; intensity nature processes change. The regulation runoff by hydropower systems introduces changes in travel navigation conditions question, especially lower pools. In this paper, an as...

light is never being distributed homogeneously and it forms a gradient over biomass. the unidirectional nature of light gives rise to a vertical gradient of light intensity as a function of depth. the maximum depth of the light zone suitable for phytoplankton photosynthesis is designated as the euphotic depth. this study was designed to test the hypothesis of mixing depth of phytoplankton and i...

light is never being distributed homogeneously and it forms a gradient over biomass. the unidirectional nature of light gives rise to a vertical gradient of light intensity as a function of depth. the maximum depth of the light zone suitable for phytoplankton photosynthesis is designated as the euphotic depth. this study was designed to test the hypothesis of mixing depth of phytoplankton and i...

Abstract We explore the economic merits of on-farm water storage with tailwater recovery systems to reduce aquifer depletion in a region expanding irrigated acreage and substantial off-season precipitation. Gains are on broad scale long planning horizon, including more than $4 billion producer surplus, 5 million acre-feet conserved groundwater, land capitalization $24 per acre. Sensitivity anal...

Nebraska Public Power District (NPPD) began monitoring aquatic-macrophyte production in Lake Ogallala, Nebraska, in 1989 because the lake provides cooling water for a coal-fired electricity generating facility-Gerald Gentleman Station (GGS). Large mats of macrophytes in the cooling water caused several trips of the generating units at GGS, at considerable cost to NPPD. The plants also support m...