Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - The impact of agriculture on dissolved nitrogen and phosphorus cycling in temperate ecosystems
AU - Heathwaite, A. Louise
N1 - The impact of agriculture on dissolved nitrogen and phosphorus cycling in temperate ecosystems
PY - 1993
Y1 - 1993
N2 - Although most research has focussed on inorganic nutrient forms of nitrate (NO− 3) and phosphorus (PO3 4) in runoff and receiving waters, nitrogen loss from agricultural land can also occur in organic and ammonium-nitrogen form; phosphorus losses, although often dominated by particulate transport, may occur in soluble organic and inorganic form. Furthermore, fluxes between different species may take place during transport from the land to the stream and as a result of in-stream, in-river or in-lake transformations. Knowledge of the spatial and temporal variation in all nitrogen species and phosphorus fractions in a drainage basin is therefore essential if the wider environmental significance of elevated nutrient concentrations in natural waters are to be assessed. This paper reviews recent work on N and P losses from agricultural land and presents some results from two intensive agricultural catchments: Slapton, Devon and the river Windrush catchment in the Cotswolds.
AB - Although most research has focussed on inorganic nutrient forms of nitrate (NO− 3) and phosphorus (PO3 4) in runoff and receiving waters, nitrogen loss from agricultural land can also occur in organic and ammonium-nitrogen form; phosphorus losses, although often dominated by particulate transport, may occur in soluble organic and inorganic form. Furthermore, fluxes between different species may take place during transport from the land to the stream and as a result of in-stream, in-river or in-lake transformations. Knowledge of the spatial and temporal variation in all nitrogen species and phosphorus fractions in a drainage basin is therefore essential if the wider environmental significance of elevated nutrient concentrations in natural waters are to be assessed. This paper reviews recent work on N and P losses from agricultural land and presents some results from two intensive agricultural catchments: Slapton, Devon and the river Windrush catchment in the Cotswolds.
KW - Particulates
KW - soluble fractions
KW - phosphorus
KW - nitrogen
KW - organics
KW - agriculture
U2 - 10.1080/02757549308035310
DO - 10.1080/02757549308035310
M3 - Journal article
VL - 8
SP - 217
EP - 231
JO - Chemistry and Ecology
JF - Chemistry and Ecology
SN - 1029-0370
IS - 3
ER -