BFW Logo
Österreichisches Bioindikatornetz (BIN)
Austrian Bio-Indicator Grid
Physiological and climate controls on foliar mercury uptake by European tree species
Despite the importance of vegetation uptake of atmospheric gaseous elemental mercury (Hg(0)) within the global Hg cycle, little knowledge exists on the physiological, climatic, and geographic factors controlling stomatal uptake of atmospheric Hg(0) by tree foliage. We investigate controls on foliar stomatal Hg(0) uptake by combining Hg measurements of 3569 foliage samples across Europe.  >>>
Artificial and natural radionuclides in spruce needles in Upper Austria from 1983 to 2008 - an application for radioecological monitoring
The spatial and temporal distribution of activity concentrations in spruce needles were comprehensively analysed and illustrated. Further on, the relation between natural and artificial radionuclides in spruce needles was determined. To estimate the long-term behaviour of 137Cs, ecological half-lives were calculated for the compartment spruce needles.  >>>
Assessment of Mercury in Needles of Forest Trees
In the Austrian forest law “Zweite Verordnung gegen Forstschädliche Luftverunreinigungen, BGBl. Nr. 199/1984”, there are threshold values specified for the concentrations of several pollutants in leaves and needles. However, there are no such threshold values specified for mercury. From the current results of the Austrian Bio-Indicator Grid a threshold value of 0.017 mg Hg/kg can be derived, above which mercury pollution must be assumed.  >>>
Impact of Environmental Change on the Radioecology of Spruce Trees in Upper Austria
In a two years project spruce needle samples of the Austrian Bioindicator Grid were analysed by gamma spectrometry to detect the geographical and temporal distribution of radionuclides with the main focus on the radioactive contamination before and after the Chernobyl fallout in 1986. This Poster was presented on the 12th International Congress of the International Radiation Protection Association/Buenos Aires 19 / 24 October 2008.
Download Poster (100k)
Indication of S and N Inputs by Means of Needle Analyses Based on the Austrian Bio-Indicator Grid
The evaluation of the investigation results is based on the data from the Austrian Bio-Indicator Grid, an all-Austrian monitoring programme which, since 1983, has included annual collection of needle samples from 611 sample plots (spruce and pine) and determination of the S, N, P, K, Ca and Mg concentrations.  >>>
BFW © 2005 - 2013