Search Results - "Langan, S.J"

Spatial contributions of diffuse inputs and within-channel processes to the form of stream water phosphorus over storm events by Stutter, M.I., Langan, S.J., Cooper, R.J.

“…Concentrations of suspended particulate matter (SPM), NO 3-N and P fractions: PO 4-P, dissolved organic P (DOP), particulate P (PP) and bioavailable…”
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Spatial and temporal dynamics of stream water particulate and dissolved N, P and C forms along a catchment transect, NE Scotland by Stutter, M.I., Langan, S.J., Cooper, R.J.

“…The dynamics of dissolved and particulate N, P and organic C were examined for field drains, through a headwater (4 km 2), into a mesoscale stream (51 km 2)…”
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River sediments provide a link between catchment pressures and ecological status in a mixed land use Scottish River system by Stutter, M.I., Langan, S.J., Demars, B.O.L.

“…This study evaluates water quality, suspended and bed sediment, ecological and catchment land use data for 13 catchments of the mixed land use River Dee, NE…”
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Comparison of microbial community assays for the assessment of stream biofilm ecology by Vinten, A.J.A., Artz, R.R.E., Thomas, N., Potts, J.M., Avery, L., Langan, S.J., Watson, H., Cook, Y., Taylor, C., Abel, C., Reid, E., Singh, B.K.

“…We investigated a range of microbiological community assays performed on scrapes of biofilms formed on artificial diffusing substrates deployed in 8 streams in…”
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Variation in river water temperatures in an upland stream over a 30-year period by Langan, S J, Johnston, L, Donaghy, M J, Youngson, A F, Hay, D W, Soulsby, C

“…Stream water temperature data from the Girnock burn, a 30-km2 catchment in Scotland were examined for systematic variation across 30 years of record…”
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Considerations of uncertainty in setting critical loads of acidity of soils: the role of weathering rate determination by Hodson, M.E., Langan, S.J.

“…The concept of critical loads has been generally accepted throughout Europe, and increasingly in Asian countries and the rest of the world, as providing the…”
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River phosphorus cycling: Separating biotic and abiotic uptake during short-term changes in sewage effluent loading by Stutter, M.I., Demars, B.O.L., Langan, S.J.

“…Medium to small scale point sources continue to threaten river ecosystems through P loadings. The capacity and timescales of within-river processing and P…”
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The Tarland Catchment Initiative and Its Effect on Stream Water Quality and Macroinvertebrate Indices by Bergfur, J., Demars, B. O. L., Stutter, M. I., Langan, S. J., Friberg, N.

“…The Tarland Catchment Initiative is a partnership venture between researchers, land managers, regulators, and the local community. Its aims are to improve…”
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Multi-element signatures of stream sediments and sources under moderate to low flow conditions by Stutter, M.I., Langan, S.J., Lumsdon, D.G., Clark, L.M.

“…This study assesses a simple sediment source tracing method using major- (Al, Ca, Fe, K, Mg, Mn, Na, P, Si, Ti) and trace-element (Ba, Be, Ce, Co, Cr, Mo, Nd,…”
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Long-term trends in hydro-climatology of a major Scottish mountain river by Baggaley, N.J., Langan, S.J., Futter, M.N., Potts, J.M., Dunn, S.M.

“…The River Dee, in North East Scotland, is a mountainous river strongly influenced by patterns of snow accumulation and melt from the Cairngorm Mountains…”
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Reply to comment on: ‘Multi-element signatures of stream sediments and sources under moderate to low flow conditions’ by Barry Rawlins by Stutter, M.I., Richards, S., Langan, S.J., Lumsdon, D.G.

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Modelling streamwater quality under varying hydrological conditions at different spatial scales by Wade, Andrew J., Neal, C., Soulsby, C., Smart, R.P., Langan, S.J., Cresser, M.S.

“…A simple and pragmatic technique for modelling streamwater acidity in a major Scottish catchment, the River Dee in Aberdeenshire, is presented. Based on End…”
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Environmental change, land use and water quality in Scotland: current issues and future prospects by Soulsby, C, Langan, S J, Neal, C

“…An outline of both the scientific and management needs facing the future water quality issues of Scotland is discussed. The scientific needs are considered in…”
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The environmental context for water quality variation in Scotland by Langan, S J, Soulsby, C

“…The variation in water quality experienced in Scotland reflects differences in the physical environment and land management. These differences occur both as a…”
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A long-term soil leaching column experiment investigating the effect of variable sulphate loads on soil solution and soil drainage chemistry by Hodson, M.E, Langan, S.J

“…A series of leaching column experiments were set-up to investigate the effects of increasing and decreasing the sulphate load on the uppermost mineral horizon…”
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The impact of variable snow pack accumulation on a major Scottish water resource by Dunn, S M, Langan, S J, Colohan, R J

“…In regions such as northern Scotland, where winter temperatures are such that the occurrence of snow is borderline under the present climate, potential changes…”
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On modelling the effects of afforestation on acidification in heterogeneous catchments at different spatial and temporal scales by Wade, A.J., Neal, C., Soulsby, C., Langan, S.J., Smart, R.P.

“…A modelling approach is presented for simulating and predicting future changes in streamwater Gran alkalinity throughout a large, heterogeneous river system…”
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Modelling instream nitrogen variability in the Dee catchment, NE Scotland by Wade, A J, Soulsby, C, Langan, S J, Whitehead, P G, Edwards, A C, Butterfield, D, Smart, R P, Cook, Y, Owen, R P

“…The Integrated Nitrogen in CAtchments model (INCA) was applied to the River Dee, Aberdeenshire, NE Scotland. To a first approximation the model was able to…”
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Factors regulating the spatial and temporal distribution of solute concentrations in a major river system in NE Scotland by Smart, R.P, Soulsby, C, Neal, C, Wade, A, Cresser, M.S, Billett, M.F, Langan, S.J, Edwards, A.C, Jarvie, H.P, Owen, R

“…The River Dee in NE Scotland, an oligotrophic soft water system, has a catchment area of approx. 2100 km 2, its source in the Cairngorm mountains being approx…”
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Determination of mineral surface area in relation to the calculation of weathering rates by Hodson, M.E., Langan, S.J., Meriau, S.

“…The release of base cations by the weathering of soil minerals provides the primary buffer against the detrimental impact of acid deposition on the soil. The…”
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