نتایج جستجو برای: gammarus lacustris
تعداد نتایج: 3504 فیلتر نتایج به سال:
Large dams have been constructed on rivers to meet human demands for water, electricity, navigation, and recreation. As a consequence, flow and temperature regimes have been altered, strongly affecting river food webs and ecosystem processes. Experimental high-flow dam releases, i.e., controlled floods, have been implemented on the Colorado River, U.S.A., in an effort to reestablish pulsed floo...
Gammarus spp. and Fucus vesiculosus from the Baltic Sea littoral community were exposed to 3 concentrations of the pharmaceuticals ibuprofen and propranolol. Both physiological and behavioural parameters were measured to examine potential effects in the organisms. For Gammarus spp., respiration, feeding rate and activity with and without predator cues were measured, and gross production to resp...
As a result of our studies the macro- and nectozoobenthos rivers semidesert zone (the Volgograd reservoir basin), 16 Malacostraca species were recorded, most which are representatives Ponto-Caspian complex. Compared to reservoir, there is an increase in quantitative indicators mysids isopods decrease number species, abundance biomass amphipods cumaceans semi-desert rivers. The average crustacea...
this experiment was conducted to increase the resistance of tiger barb (capoeta tetrazona ) against environmental stress by feeding brackish water gammarus sp. powder as supplementary diet in three levels (25%, 50% and 75%) and three replicates pe group compared to control group for 60 days. fishes was fed with 4 diet treatment containea of: 100% artificial diet (control group), 25% brakish wat...
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