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| Radioökologische Untersuchung Oberösterreichs anhand des Bioindikators Fichtennadel / Endbericht |
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Basierend auf dem laufenden Projekt Beweissicherung Kernkraftwerk Temelin war es das Ziel dieser Untersuchung, eine fundierte radioökologische Datenbasis hinsichtlich der radioaktiven Kontamination von Fichtennadeln im Bundesland Oberösterreich zu schaffen. Der Endbericht liegt nunmehr vor und kann hier heruntergeladen werden.
Download Endbericht (4,2 MB) |
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| Österreichisches Bioindikatornetz - Schwefelimmissionseinwirkungen 2008 |
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Das Schwefelergebnis 2008 des Österreichischen Bioindikatornetzes liegt im Trend der letzten Jahre ist aber mit 9,7% Grenzwertüberschreitungen an den 267 Grundnetzpunkten deutlich schlechter als jenes aus 2007 (2,6%).
weitere Information |
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| Laborvergleichstests verbessern die Analysenqualität beim europäischen Waldschadensmonitoring |
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Speziell bei großflächigen Monitoringerhebungen, an denen viele Laboratorien beteiligt sind, ist besonderes Augenmerk auf die Analysenqualität zu richten. So sind statistisch signifikante Trends in der Natur bei schlechter Analysenqualität oft erst Jahrzehnte später als solche erkennbar (Sulkava et al., 2007). Bessere Qualität in der Analytik ist somit ein wichtiger Faktor, um Zeit (und damit Kosten) bei Monitoringprojekten zu sparen.
weitere Informationen |
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| Comparison of spatial interpolation methods on the basis of sulphur data from the Styrian Bio-Indicator Grid |
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| Often spatial phenomena like e.g. the sulphur impact cannot be measured seamlessly all around an area, i.e. measurements have to be taken at selected plots. However, for the most part the purpose of the investigation is to draw conclusions about the entire area, not just about the locations of the measuring systems. Hence one faces the problem of needing to predict the measured variables for two- or three-dimensional areas from information gathered in spot measurements. >>> |
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| Waldwissen.net - Austrian Bio-Indicator Grid Sulphur 2005 |
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In Austria, the sulphur impact on forest trees is detected with the Austrian Bio-Indicator Grid. Samples are taken every year, and on the basis of their analysis, the spatio-temporal development of the sulphur impact can be judged according to the statutory threshold values. Despite the reduction of SO2-emissions in Austria and its neighbouring countries, in the year 2005 the threshold values were exceeded at 41 out of 769 measuring plots. >>> |
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| Flash animation of the positive trend in the sulphur content in the Austrian Bio-Indicator Grid from 1983 to 2006 |
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To gain a nationwide overview of the sulphur content in the Austrian Bio-Indicator Grid, the results of the investigations from 1983 to 2006 were arranged in a Flash animation.
Download (3MB) 
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| Austrian Bio-Indicator Grid - Sulphur impacts in 2007 |
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In the 25 year long sample period of the Austrian Bio-Indicator Grid, the result for sulphur in 2007 is the third best result after 1984 and 2004 - 3,0% of the points of the 16x16km grid (8 out of 269 points) showed exceedances of the threshold value.
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| Austrian Bio-Indicator Grid - Sulphur impacts in 2006 |
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| The result of the Austrian Bio-Indicator Grid for sulphur in 2006 follows the trend of the last years - 6.6% of the points of the 16x16km grid (18 out of 274 points) showed exceedances of the threshold value. The same picture was derived from the results of Grid 85 (harvested since 1985), where at 7.1% of the plots (53 out of 747 plots) an exceedance of the threshold value was detected. >>> |
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| Threshold values for the assessment of sulphur |
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The threshold values for the assessment of sulphur contents in leaf and needle samples are specified in the Austrian forest law “Zweite Verordnung gegen Forstschädliche Luftverunreinigungen, BGBl. Nr. 199/1984”
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| Assessment of Mercury in Needles of Forest Trees |
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| 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. >>> |
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| Values for the assessment of the supply of macro- and micronutrients |
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The values for the assessment are based on the values provided by GUSONNE 1964. They are still accepted and have been reconfirmed in the newer literature by BONNEAU 1988, VAN DEN BURG 1988 and FOERST et al. 1987. >>> |
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