Košetice Observatory - 25 Years

0442650 - ÚVGZ 2015 RIV CZ eng M - Monography Chapter
Oulehle, Filip - Fottová, Daniela - Hruška, Jakub - Krám, Pavel - Štěpánová, M. - Váňa, M.
Long-term hydrochemical monitoring in the Anensky potok catchment as a part of the geomon network.
Košetice Observatory - 25 Years. Vol. 1. Prague: Czech Hydrometeorological Institute, 2014 - (Holubová Šmejkalová, A.), s. 85-91. ISBN 978-80-87577-40-0
Institutional support: RVO:67179843
Keywords : sulfur * nitrogen * catchment * budget * acidification * recovery * soil * C/N
Subject RIV: EH - Ecology, Behaviour

Anenský Potok is a small forested catchment (27 ha), operated as an integral part of the Košetice Observatory, where monthly measurements of elements input (bulk precipitation and throughfall deposition) and output (runoff chemistry) have been monitored since 1990. The catchment is a part of the International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems and of a national small catchment monitoring network GEOMON. The main research objective is to examine the temporal changes in input-output budgets of major elements as a function of air pollution, climate and management practices. Since 1994, reduction of dust, SO2, NOx and NH3 emissions in the Czech Republic effectively induced changes in precipitation chemistry. The most significant changes in Anenský Potok were: i) reduction of S total deposition by 68%, ii) increase of throughfall pH from 4 to 5.7 and iii) relatively stable inorganic nitrogen (N) input into the forest ecosystem. Contrary to the general trends of streamwater chemistry across GEOMON network (decline of SO4, Al concentrations and increase of pH), Anenský potok stream water chemistry did not change significantly. This was due to the low water transport and relatively high buffering capacity of catchment soils. However, NO3 concentration significantly decreased, thus better immobilization of inorganic N has been observed recently – similar to the majority of the GEOMON catchments.
Permanent Link: http://hdl.handle.net/11104/0245564