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Streams more vulnerable to stressors such as climate change than previously thought（图）
Streams more vulnerable stressors climate change previously thought
2021/3/19
Water is constantly on the move: through the air, through waterways, and underground. Life depends on a consistent supply of water, and details about its journey are necessary for understanding and ma...
Longitudinal Grain Sorting by Current in Alluvial Streams
Longitudinal Grain Current Alluvial Streams
2009/10/29
The longitudinal current sorting of graded sediment is analysed by use of a
sediment transport formula developed recently by Engelund and Fredsae
(1976). The analysis yields that for a given longitu...
Discharge Measurements by a New-Formed Relative Salt-Dilution Method in Small Turbulent Streams
Discharge Measurements New-Formed Relative Salt-Dilution Method Turbulent Streams
2009/10/28
Water discharges in small turbulent streams are determined by injecting concentrated
salt solutions at constant feed-rate and measuring the dilution level
downstream by conductivity readings in situ...
A Modified Sediment Transport Model for Natural Streams
Modified Sediment Transport Model Natural Streams
2009/10/28
In an earlier investigation of the behaviour of tracer particles for determination
of bed load transport in an alluvial stream (Thomsen 1080), specific
records were taken of the particle velocities ...
Variations of 87Sr/86Sr in Water from Streams Discharging into the Bothnian Bay,Baltic Sea
Variations 87Sr/86Sr Ratio Bothnian Bay
2009/10/27
The 87Sr/86Sr ratio in 53 water samples were analysed, 26 from streams in
Sweden, 22 from streams in Finland and 5 from the Bothnian Bay itself. The
brackish seawater of the bay had the isotope rati...
Modelling Streamflow Recession in Two Danish Streams
Streamflow Recession Two Danish Streams
2009/10/26
The streamflow recession for two Danish streams is found not to follow the
traditionally used single exponential expression Q = Qo K', where K is the recession
constant. Three alternative equations,...
In Plynlimon streams, brown trout (Salmo trutta L.) are widespread in the upper Wye at population densities of 0.03 to 0.32 fish m-2 and show evidence of successful recruitment in most years. In the u...
Water temperature data were collected from five stations in the upper Severn system. Temperatures were compared between a stream with a 335 ha catchment after it had flowed for c. 1.5 km through clea...
Dynamics of river sediments in forested headwater streams：Plynlimon
river sediments Plynlimon British upland catchments forest cycle
2009/6/8
Long term studies of fluvial sediment processes in the Plynlimon catchments have contributed to the assessment and quantification of plantation forestry impacts in British upland catchments, at all s...
Hydrogeochemsitry of montane springs and their influence on streams in the Cairngorm mountains, Scotland
montane springs Scotland Cairngorm mountains
2009/5/26
Springs are important groundwater discharge points on the high altitude (>800m) plateaux of the Cairngorm mountains, Scotland and form important wetland habitats within what is often a dry, sub-arctic...
Uncertainty of solute flux estimation in ungauged small streams：potential implications for input-output nutrient mass balances at stream reach scale
nutrient retention hydrological conditions
2009/5/18
Input-output mass balances within stream reaches provide in situ estimates of stream nutrient retention/release under a wide spectrum of hydrological conditions. Providing good estimates of the mass b...
Hydrochemical heterogeneity in an upland catchment：further characterisation of the spatial, temporal and depth variations in soils, streams and groundwaters of the Plynlimon forested catchment, Wales
upland catchment Hydrochemical heterogeneity Wales
2009/5/18
The heterogeneous nature of upland hard-rock catchments in terms of geology, geomorphology, superficial deposits, soil type and land use gives rise to a range of hydrochemical characteristics in strea...
Climate control on sulphate and nitrate concentrations in alpine streams of Northern Italy along a nitrogen saturation gradient
surface waters nitrate concentrations sulphate nitrogen saturation gradient
2009/4/29
The role of meteorology, hydrology and atmospheric deposition on the temporal pattern of SO4 and NO3 concentrations was investigated for three streams draining alpine catchments in Northern Italy.
...
Seasonality, water quality trends and biological responses in four streams in the Cairngorm Mountains, Scotland
hydrochemistry hydrology trends
2009/3/24
The chemical composition and invertebrate communities found in four streams in the Cairngorms, Scotland, were monitored between 1985-1997. Stream waters were mildly acidic (mean pH ca. 6.5), with low ...
Chemical trends at lakes and streams in the UK Acid Waters Monitoring Network, 1988-2000: Evidence for recent recovery at a national scale
acidification recovery long-term trends climate
2009/3/24
A detailed trend analysis of 12 years of data (1988-2000) for 22 surface waters in acid-sensitive regions of the United Kingdom, in which individual site data have been combined to identify national-s...