View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Diposit Digital de Documents de la UAB 1 Changes in atmospheric deposition and streamwater chemistry over 2 25 years in undisturbed catchments in a Mediterranean mountain 3 environment 4 5 6 Anna Àvila1* and Ferran Rodà1,2 7 1Center for Ecological Research and Forestry Applications (CREAF). Universitat 8 Autònoma de Barcelona. 08193, Bellaterra. Spain 9 2Department of Animal Biology, Plant Biology and Ecology, Universitat Autònoma de 10 Barcelona. 08193, Bellaterra. Spain 11 12 13 *corresponding author 14 Anna Àvila 15 Tel + 34 93 581 46 69 16 Fax + 34 93 581 4151 17
[email protected] 18 19 Ferran Rodà 20
[email protected] 21 22 Keywords: Nitrogen, sulphate, alkalinity, base cations, streamwater chemistry, Quercus 23 ilex, Fagus sylvatica, heathland, Mediterranean, Montseny mountains 24 25 26 27 Highlights: 28 Mediterranean baseflow streamwater chemistry shows similar temporal trends to 29 those observed in temperate and alpine catchments in Europe and North America towards 30 lower sulphate concentrations and higher alkalinity. 31 Increased silicate weathering in the current warmer climate is a likely factor 32 underlying the alkalinity increase in streamwater. This is the author’s version of a work that was accepted for publication in Science of the total environment (Ed. Elsevier). Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Chan- ges may have been made to this work since it was1 submitted for publication.