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Linking hydrology and biogeochemistry in complex landscapes

Department of Geography, University of Durham, Sciences Laboratories, South Road, Durham DH1 3LE, UK, t.p.burt{at}durham.ac.uk

G. Pinay

CEFE-CNRS, 1919 route de Mende, 34293 Montpellier, France

This review seeks to examine connections between hydrology and biogeochemistry at the landscape scale. A review of research on landscape structure and organization provides a context for what follows, and seeks to integrate work at relevant scales in ecology and geomorphology; the degree of functional ‘connectedness’ between different landscape elements provides the key theme. Following a review of hillslope hydrology, links between hillslope runoff pathways and nutrient dynamics are then considered. We focus in particular on riparian zones, where nutrient dynamics has relevance for water-quality management in catchments. In conclusion, we argue that future studies need to focus on the critical near-stream zone, given its importance in coupling hillslope and channel systems.

Key Words: flow pathways • hillslopes • leaching • landscape structure • riparian zones

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