搜索结果: 1-10 共查到“理学 Periphyton”相关记录10条 . 查询时间(0.046 秒)
Reed – periphyton – mycota interactions in the water of different water bodies
Reed-periphyton mycoflora interactions water bodies hydrochemistry
2010/3/17
The authors investigated the influence of periphyton that abundantly overgrow stalks of reeds (reed-periphyton) submerged in water [Phragmites australis (Cav.) Trin. ex Stewdel], especially the old on...
Changes in carbon stable isotope ratios during periphyton development
carbon stable isotope ratios periphyton development
2014/5/5
Stable isotopes are widely used to infer trophic relationships with little attention paid to temporal variability at the base of the food web. We examined changes in the carbon-stable isotope composit...
Top-down and bottom-up controls on periphyton biomass and productivity in Lake Tanganyika
Top-down and bottom-up controls periphyton biomass and productivity Lake Tanganyika
2014/5/4
We studied the effects of nutrient availability and grazers on periphyton in the littoral zone of Lake Tanganyika. Using a combination of dissolved nutrient ratios, nutrient diffusing substrates, and ...
Periphyton responses to eutrophication in the Florida Everglades: Cross-system patterns of structural and compositional change
Periphyton Florida Everglades Cross-system patterns
2014/4/30
We examined periphyton along transects in five Everglades marshes and related compositional and functional
aspects to phosphorus (P) gradients caused by enriched inflows. Results were com...
Flow history explains temporal and spatial variation of carbon fractionation in stream periphyton
temporal and spatial variation carbon fractionation stream periphyton
2014/5/9
We investigated factors that contribute to isotopic carbon fractionation in periphytic biofilms in a human-altered headwater stream with a flashy hydrograph. Water velocity had an important effect on ...
Mass-transfer-limited nitrogen and phosphorus uptake by stream periphyton: A conceptual model and experimental evidence
Mass-transfer-limited nitrogen phosphorus uptake stream periphyton conceptual model experimental evidence
2014/5/19
We conducted flow-tank experiments to examine nitrate (NO3) and dissolved reactive phosphorus (DRP) uptake by stream periphyton over a wide range of near-bed velocities and turbulence levels. Our aims...
Periphyton density influences organochlorine accumulation in rivers
Periphyton density organochlorine accumulation rivers
2014/5/22
To investigate the influence of eutrophication on organochlorine dynamics in lotic systems, we related polychlorinated biphenyl (PCB) concentrations in brown trout (Salmo trutta) to the periphyton den...
The effect of water velocity on stable carbon and nitrogen isotope signatures of periphyton
water velocity stable carbon nitrogen isotope signatures
2014/5/22
Water movement affects carbon and nitrogen isotopic signatures of algae, possibly through effects on boundarylayer thickness. We describe a laboratory experiment carried out in artificial streams, whi...
Effect of grazing and nutrient supply on periphyton biomass and nutrient stoichiometry in habitats of different productivity
nutrient supply periphyton biomass
2014/5/30
The impact of grazing and nutrient supply on epilithic periphyton was investigated in factorial field experiments
in four seasons at three Swedish sites of different productivity and herbivore ...
Effects of N : P ratio and total nutrient concentration on stream periphyton community structure, biomass, and elemental composition
total nutrient concentration elemental composition
2014/5/30
The effects of nutrient ratios on algal community structure and algal growth have been examined extensively in
lakes and marine environments, but rarely in streams. We manipulated stream water N : P ...