Translator Disclaimer
1 February 2008 Manipulation of Precipitation in Small Headwater Catchments at Storgama, Norway: Effects on Leaching of Organic Carbon and Nitrogen Species
Author Affiliations +
Abstract

Projected changes in climate in Southern Norway include increases in summer and autumn precipitation. This may affect leaching of dissolved organic matter (DOM) from soils. Effects of experimentally added extra precipitation (10 mm week−1) during the growing season of 3 years (2004–2006) to small headwater catchments at Storgama (59°0′N, 550–600 m a.s.l.) on leaching of total organic carbon (TOC) and total organic nitrogen (TON) were assessed. Extra precipitation did not have a significant effect on average TOC and TON concentrations in runoff. Thus, fluxes of TOC and TON increased nearly proportionally with water fluxes. This suggests that a store of adsorbed and potentially mobile TOC and TON in catchment soils buffers the concentration of DOM in runoff. The size and dynamics of the pool of TOC and TON depends on the balance between production and leaching rates. Infrequent short droughts had only small effects on TOC and TON fluxes in runoff from the reference catchments.

Ståle Haaland, Kari Austnes, Øyvind Kaste, Jan Mulder, Gunnhild Riise, Live Semb Vestgarden, and Arne O. Stuanes "Manipulation of Precipitation in Small Headwater Catchments at Storgama, Norway: Effects on Leaching of Organic Carbon and Nitrogen Species," AMBIO: A Journal of the Human Environment 37(1), 48-55, (1 February 2008). https://doi.org/10.1579/0044-7447(2008)37[48:MOPISH]2.0.CO;2
Published: 1 February 2008
JOURNAL ARTICLE
8 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top