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Large-Scale Impacts of Land-Use Change in a Scottish Farming Catchment

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Abstract

A catchment is an area of land defined by the origins and discharges of all tributary streams feeding large rivers flowing into the sea. It is therefore a natural bio-physical unit distinct from adjacent catchments and forms the obvious basis for integrated environmental management policies. In Europe, river catchments tend to be dominated by agriculture, at least at lower altitudes. In the case of the Ythan catchment (Fig. 15.1), Aberdeenshire, Scotland, where the river rises at only a few hundred metres, more than 90% of the land area is now under agricultural production. Much of this is arable crops like wheat, barley, and oil-seed rape, which demand high inputs of chemical nitrogen. The Ythan catchment also hosts large numbers of pigs and other livestock (and also some of the authors of this book).

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  • Bird Species
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Notes

  1. 1.

    We used R version 2.6 and mgcv version 1.3--27. More recent versions of R and mgcv require a small modification to the code; see the book website (www.highstat.com) for updated code.

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Zuur, A., Raffaelli, D., Saveliev, A., Walker, N., Ieno, E., Smith, G. (2009). Large-Scale Impacts of Land-Use Change in a Scottish Farming Catchment. In: Mixed effects models and extensions in ecology with R. Statistics for Biology and Health. Springer, New York, NY. https://doi.org/10.1007/978-0-387-87458-6_15

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