Headwater Catchment
High frequency measurements explain quantity and quality of dissolved organic carbon mobilization in a headwater catchment
... a headwater catchment of the Rappbode stream (51 ◦ 39 0 ...the catchment has an area of ...The catchment is mainly forested with spruce and pine trees (77 %); the remaining area is covered ...
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Impacts of Climate Change on the Hydrology of a Small Brazilian Headwater Catchment Using the Distributed Hydrology Soil Vegetation Model
... Climate change is one of the greatest issues for human society. The objective of this study is to assess the impacts of future climate change on seasonal av- erage discharge and monthly water budget in a small ...
12
Model based estimation of pesticides and transformation products and their export pathways in a headwater catchment
... Abstract. Pesticides applied onto agricultural fields are fre- quently found in adjacent rivers. To what extent and along which pathways they are transported is influenced by intrin- sic pesticide properties such as ...
16
The influence of soil moisture on threshold runoff generation processes in an alpine headwater catchment
... The control exerted by wetness conditions on runoff gener- ation has been shown to be especially important in steep, hu- mid catchments with shallow soils, where topographic prop- erties exert a significant role on the ...
14
Physically based modelling of hydrological processes in a tropical headwater catchment (West Africa) – process representation and multi criteria validation
... Abstract. The aim of the study was to test the applicabil- ity of a physically-based model to simulate the hydrologi- cal processes in a headwater catchment in Benin. Field in- vestigations in the ...
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Nitrate sinks and sources as controls of spatio temporal water quality dynamics in an agricultural headwater catchment
... The study area is in the Löchernbach catchment, a 1.7 km 2 agricultural headwater catchment. It is located in southwest- ern Germany, within the wine-growing area of the Kaiser- stuhl (Fig. 1), with ...
15
Surface fluxes and water balance of spatially varying vegetation within a small mountainous headwater catchment
... tainous headwater catchments, creating a challenge for mea- suring and interpreting energy and mass ...complex headwater mountain catchments; and (2) to compare and contrast the seasonal surface energy and ...
14
Sources of uncertainty in climate change impacts on river discharge and groundwater in a headwater catchment of the Upper Nile Basin, Uganda
... Mitano catchment is primarily agrar- ian ...the catchment (17%), with small areas of forest plantations and wetlands also ...the catchment and obtains its water supplies from a series of deep ...
12
Controls on the fate and transport of methylmercury in a boreal headwater catchment, northwestern Ontario, Canada
... Methylmercury (MeHg) is a global pollutant that demands attention as an environmental toxin. Significant progress has been made in the understanding of methylating and demethylating bacteria (e.g. Marvin-DiPasquale et ...
12
The challenges of modelling phosphorus in a headwater catchment: Applying a ‘limits of acceptability’ uncertainty framework to a water quality model
... When the lesser constraint of just high and low flows (often the periods of most nutrient transport in flashy catchments (Haygarth et al., 2005; Ockenden et al., 2016; Perks et al., 2015)) was applied simulations that ...
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A three component hydrograph separation based on geochemical tracers in a tropical mountainous headwater catchment in northern Thailand
... cause none of the sampled components yielded concentra- tions with similar magnitudes. Although the samples were collected in non-agricultural areas, the single peak may ori- ginate from agricultural areas upstream, ...
13
The challenges of modelling phosphorus in a headwater catchment: Applying a "limits of acceptability" uncertaintly framework to a water quality model
... For a large number of the parameters, it is difficult to identify any sensitivity in fitting the observations, and a large amount of equifinality is evident (Figs. 7 and 8). This is particularly the case for the SOL_ORGP ...
18
Effect of the spatial distribution of physical aquifer properties on modelled water table depth and stream discharge in a headwater catchment
... Modelling studies have investigated the effects of vertical variations in soil properties on water table dynamics and discharge. Different conceptualisations were proposed for modelling vertical variation of soil ...
16
Parameter uncertainty and identifiability of a conceptual semi-distributed model to simulate hydrological processes in a small headwater catchment in Northwest China
... the catchment are calcareous rocks; from these, relatively shallow soils developed, which commonly have a coarse texture, an intermediate organic matter content, and pH values ranging from 7 to 8 (He et ...the ...
17
Time variability and uncertainty in the fraction of young water in a small headwater catchment
... for catchment comparison studies when different time periods are ...ent catchment situations and the behavior of its uncertainty – that is, to use a 1-year moving time window and estimate an ensemble of Fyw ...
15
Characteristics and controls of variability in soil moisture and groundwater in a headwater catchment
... any catchment. To understand and model the emergent catchment-scale pro- cesses they create, we must understand how the individual components of variability interact and change with ...
20
Spatial variability of the sediment transport in the headwater catchment of the Aragón river
... Las cuencas de menor longitud tienen menos puntos de muestreo: tres en los ríos Estarrún y Lubierre, nueve en el río Esca, siete en el río Veral, diez en el río Aragón Subordán y doce en[r] ...
22
The age, origin and pathway of subsurface stormflow in a steep humid headwater catchment
... it provides explanation of why isotopic traCing studies observe such large old water volumes in storm runoff, and ii it emphaSises the importance of matrix flow in generating translatory[r] ...
317
An assessment of trends and potential future changes in groundwater baseflow drought based on catchment response times
... of catchment storage and release for the hydrological response on a headwater catchment ...important catchment storage (Staudinger et ...a catchment scale will be a prerequisite for ...
16
Distribution of the benthic macroinvertebrate fauna in northeast Thailand : variation of faunal assemblages due to environmental changes
... FIELD RECORD SHEET 239 MACROINVERTEBRATE SPECIES LIST OF THE CHEON CATCHMENT 241 MACROINVERTEBRATE INDIVIDUALS SAMPLED FROM THE CHEON HEADWATER CATCHMENT OCTOBER 1995-AUGUST 1996 243 AVE[r] ...
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