This paper proposes a method to improve landscape-pollution interaction regression models through the inclusion of a variable that describes the spatial distribution of a land type with respect to the pattern of runoff within a drainage catchment. The proposed index is used as an independent variable to enhance the strength, as quantified by R2 values, of regression relationships between empiri...

Catchment management requires modelling for compliance, investigation, understanding, knowledge capture, and informing decisions. The nature of the problems is variable, ranging across scales both temporally and spatially, including discrete events, long term averages, daily and seasonal dynamics, point and spatial estimates and total catchment outputs. These requirements have spawned a variety...

Abstract. Tracing the origin of sediment is needed to improve our knowledge hydro-sedimentary dynamics at catchment scale. Several fingerprinting approaches have been developed provide this crucial information. In particular, spectroscopy provides a rapid, inexpensive and non-destructive alternative technique conventional analysis geochemical properties. Here, we investigated performance four m...

TAPES-G is a grid-based terrain analysis program that computes slope, aspect, upslope contributing area, profile and plan curvature and several other topographic attributes for each cell of a square-grid digital elevation model (DEM). These topographic attributes can be used to represent key physical processes in a form simple enough to allow modeling at catchment and larger scales. The program...

Summary We document a substantial increase in global N2O emissions from mangroves. Based on our analysis of two decades mangrove emission studies, we estimate 0.023 Tg N year?1 ecosystems. fluxes ecosystems are strongly increased by sediment dissolved inorganic nitrogen (DIN) concentration transported river catchments to coastal waters. Continuing growth nutrient ...

The objective of this study is to assess the performance of a regional hydrological model in catchments treated as ungauged. The Catchment Resources and Soil Hydrology (CRASH) model is a daily, catchment-scale, rainfall-runoff model that has been previously regionalised for England and Wales. In this paper, the regional CRASH is evaluated in three catchments located in East Anglia – eastern Eng...

A two year hydrological characterisation programme of relatively intact blanket peat-covered catchments, underlain by geochemically distinct substrates, investigated the influence sub-peat materials on runoff regimes first order and second streams draining them. Semi-continuous monitoring flow water quality revealed a strong inverse relationship between stream rates specific electrical conducta...

Knowledge of the hydrochemical dynamics of the trace metal manganese (Mn) in upland catchments is required for water quality management. Stream water Mn and other solutes and flow were monitored in two upland catchments in northern England with different soils: one dominated by peat (HS7), the other by mineral soils (HS4). Maximum Mn concentrations occurred at different times in the two catchme...

[1] Lateral water flow in catchments can produce important patterns in water and nutrient fluxes and stores and also influences the long-term spatial development of forest ecosystems. Specifically, patterns of vegetation type and density along hydrologic flow paths can represent a signal of the redistribution of water and nitrogen mediated by lateral hydrologic flow. This study explores the use...