Effect of Canopy Drip on Accumulation of Nitrogen and Heavy Metals in Moss

Meyer, Michaela; Schröder, Winfried; Hoffmann, Andreas

doi:10.4267/pollution-atmospherique.5159

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…The median value of Cd deposition modelled for forests exceeds that for grassland by factor 3.2 (EMEP) and 1.4 (LE), respectively. The latter value corresponds to measurements of Cd concentrations in moss sampled beneath canopies and beyond forests conducted during 2012 and 2013 (Meyer et al 2015c). …”

Section: Correlation Analysesmentioning

confidence: 64%

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Bioindication and modelling of atmospheric deposition in forests enable exposure and effect monitoring at high spatial density across scales

Schröder

Nickel

Schönrock

et al. 2017

Annals of Forest Science

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Section: Correlation Analysesmentioning

confidence: 64%

“…The median Pb deposition for forests as calculated by LE exceeds the LE grassland deposition value by factor 1.4, which is clearly lower than that derived from EMEP modelling (2.9). According to Meyer et al (2015c), Pb concentrations in moss sampled in 2012-2013 beneath canopies exceeded those sampled beyond canopies by factor 1.9.…”

Section: Correlation Analysesmentioning

confidence: 99%

Bioindication and modelling of atmospheric deposition in forests enable exposure and effect monitoring at high spatial density across scales

Schröder

Nickel

Schönrock

et al. 2017

Annals of Forest Science

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Influence of the Canopy Drip Effect on the Accumulation of Atmospheric Metal and Nitrogen Deposition in Mosses

Nickel¹,

Schröder²,

Völksen³

et al. 2022

Forests

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Wet, dry, and occult atmospheric deposition may be modified by vegetation canopies. The aim of this study was to verify canopy drip effect studies conducted in 2012, in 2013, and in 2015/2016. For this purpose, 26 moss samples were taken at each of eight monitoring sites of the European Moss Survey 2020/2021 in Germany from a corresponding number of subplots, each representing the site categories “under tree canopy” and adjacent “open land”. The sampling, as well as the chemical analyses, of 12 metals (Al, As, Cd, Cr, Cu, Fe, Hg, Pb, Ni, Sb, V, Zn) and nitrogen (N) and the recording of sample- and site-describing metadata were conducted according to the ICP Vegetation experimental protocol. The results demonstrate an overall higher metal and nitrogen accumulation in moss samples of “canopy” sites compared to neighboring “open land sites” (grassland, heath). The ratios between the “canopy” and “open land” sites of 1.18 to 1.69 and significant correlations of r > 0.8 in case of five elements agree well with corresponding values from samplings in 2012, 2013, and 2015/2016. These results should be used for modeling atmospheric deposition aiming at more realistic results. With regard to the question of whether, and to what extent, moss samples should preferably be taken from “open land” or “canopy” sites, the following can be concluded: The recommendations of ICP Vegetation with regard to the minimum distance to be maintained from trees and shrubs should not be interpreted to mean that “open” sites are fundamentally more suitable for moss sampling in Germany than, for example, clearings in forests. The mostly higher variability of the measured values compared to the “canopy” sites rather suggests that in the open country a much higher number of influencing factors could be significant for the element accumulation in mosses in addition to the background pollution through atmospheric deposition. This is also supported by the fact that the metal contents in the moss samples of the “open” sites can clearly exceed those of the neighboring “canopy” sites in individual cases. With regard to “open” land, grassland sites seem to be less suitable for moss sampling than bog and heathland sites. In grassland, moss occurrences are often sparser and/or cut short by meadow mowing, so that the removal of three-year shoots on grassland, as recommended by ICP Vegetation, must be replaced in places by one-year shoots. The comparatively higher state dynamics of grassland sites also make the resampling of moss at previously sampled sites more difficult.

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Effect of Canopy Drip on Accumulation of Nitrogen and Heavy Metals in Moss

Cited by 2 publications

References 30 publications

Bioindication and modelling of atmospheric deposition in forests enable exposure and effect monitoring at high spatial density across scales

Bioindication and modelling of atmospheric deposition in forests enable exposure and effect monitoring at high spatial density across scales

Influence of the Canopy Drip Effect on the Accumulation of Atmospheric Metal and Nitrogen Deposition in Mosses

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