Toggle Main Menu Toggle Search

Open Access padlockePrints

Models and monitoring: Scaling-up cause-and-effect relationships in nutrient pollution to the catchment scale

Lookup NU author(s): Dr Paul Quinn


Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Laboratory and small-scale field observations have yielded fundamental insights into the causes of nutrient pollution. Detection of downstream, off-site impacts of nutrient pollution reveals its effects. However, there is a gulf in our knowledge and practice that prevents the rational scaling-up of findings made at one scale so that they contribute to establishing a sound scientific basis for planning at the catchment scale. Many modellers may thus rely on simple models when simulating nutrient pollution at the catchment scale as these models can reflect their judgments and uncertainties. The only way for planners and scientists to advance in harmony is to create robust scaling-up techniques, which can call upon a range of scale-appropriate models (including complex physically-based, distributed models and lumped Minimum Information Requirement (MIR) models). This goal will not be achieved unless an extensive set of nested, multi-scale experiments are undertaken to examine how processes and model parameters change over space and time. This paper shows that any hydrological flow path and nutrient source area analysis must pay respect to the effects of the model grid scale and the size of the study area.

Publication metadata

Author(s): Quinn PF

Editor(s): Steenvorden, J; Claessen, F; Willems, J; Steenvoorden, J

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Agricultural Effects on Ground and Surface Waters: Research at the Edge of Science and Society

Year of Conference: 2002

Pages: 397-403

ISSN: 0144-7815

Publisher: IAHS Press

Library holdings: Search Newcastle University Library for this item

Series Title: IAHS Proceedings & Reports

ISBN: 9781901502763