Comparative use of lichens, mosses and tree bark to evaluate nitrogen deposition in Germany

Boltersdorf, Stefanie; Pesch, Roland; Werner, Willy

doi:10.1016/j.envpol.2014.02.017

Cited by 49 publications

(28 citation statements)

References 56 publications

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“…Inevitably, it comes down to the desired information. If the assessment of the adhering particles, isotopic ratios, or the speciation of metals within the sample are of interest, then it has been recommended that the samples are not washed [54]. If the bioconcentrated fraction is of interest then it is recommended that the samples are washed [55].…”

Section: Sampling and Sample Pre-treatmentmentioning

confidence: 99%

Metal and metalloid speciation in plants: Overview, instrumentation, approaches and commonly assessed elements

Kroukamp

Wondimu

Forbes

2016

TrAC Trends in Analytical Chemistry

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The ability of plants to hyper-accumulate metals and metalloids from the surrounding environment may pose a significant health risk to both humans and animals since plants form a substantial component of diet. This attribute, however, has also been identified as a useful tool in bioremediation and biomonitoring studies; where assimilated metal(loid)s in plants often correlate to environmental exposure. Since the bioavailability and toxicity of these elements depends upon their chemical form, speciation studies are essential in determining mobility and metabolic pathways. This can be done in a number of ways where sampling, pre-treatment and storage are all important factors affecting speciation. Appropriate analytical techniques for speciation studies can either be direct methods such as XAS, or indirect methods which require species separation prior to analysis. Separation techniques can be in the form of sequential extractions or column separation and analyte detection often utilises instrumentation such as ESI-MS, ICP-MS and ICP-OES.

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Section: Sampling and Sample Pre-treatmentmentioning

confidence: 99%

Metal and metalloid speciation in plants: Overview, instrumentation, approaches and commonly assessed elements

Kroukamp

Wondimu

Forbes

2016

TrAC Trends in Analytical Chemistry

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“…Finally, each sample was processed in triplicate to evaluate reproducibility. Lichens absorb nitrogen from the air in the form of nitrate and ammonium; however, for this study, N as NO 3 − was measured [14,27]. Nitrate (N as NO 3 − ) was analyzed per USEPA Method 9210A (Thermo Scientific™ Orion™ Nitrate ion selective electrodes: ISE) following SW-846 protocols.…”

Section: Sampling Design and Laboratory Proceduresmentioning

confidence: 99%

Buellia dispersa (Lichens) Used as Bio-Indicators for Air Pollution Transport: A Case Study within the Las Vegas Valley, Nevada (USA)

et al. 2017

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Abstract:Hazardous substances (e.g., toxic elements, oxides of nitrogen, carbon and sulfur) are discharged to the environment by a number of natural and anthropogenic activities. Anthropogenic air pollution commonly contains trace elements derived from contaminants and additives released into the atmosphere during fossil fuel combustion (automobiles, power generation, etc.) as well as physical processes (e.g., metal refining, vehicle brake wear, and tire and pavement wear). Analysis of pollutant chemical concentrations in lichens collected across the Las Vegas Valley allows documentation of the distribution of air pollution in the Valley. Analyses of lichen biomass (Buellia dispersa), when compared to windrose diagrams, shows pathways of airborne pollutant transport across the Las Vegas Valley. The west and north sectors of the Las Vegas Valley contained the lowest target contaminates (e.g., Cr, Cu, Co, Pb, Ni) and the highest NO 3 − while the east and south sectors contained the highest levels of target contaminates and lowest NO 3 − . Additionally, metals and NO 3 − detected in the east and south sectors of the valley indicate that air pollution generated in the valley is moving from the south to the north-northeast and across the valley, exiting on the north and south side of Frenchman Mountain.

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“…Analyses of nitrogen contents and C/N ratios in wood from FACE studies have generally not shown an impact of an elevated CO 2 treatment (Kostiainen et al 2008(Kostiainen et al , 2009, the exception being results obtained for aspen (Kaakinen et al 2004). It should be noted that while every effort was taken to remove relatively nitrogen-rich lichens and moss (Boltersdorf et al 2014) from the outer bark by gentle scraping, a minor presence of these nonwoody plants (or their rooting structures) remains a possibility.…”

Section: Ash and Elemental Analysesmentioning

confidence: 99%

Effects of long-term elevated CO2 treatment on the inner and outer bark chemistry of sweetgum (Liquidambar styraciflua L.) trees

Eberhardt

Labbé

et al. 2015

Trees

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Key message Long-term exposure of sweetgum trees to elevated atmospheric CO 2 concentrations significantly shifted inner bark (phloem) and outer bark (rhytidome) chemical compositions, having implications for both defense and nutrient cycling. Abstract Changes in plant tissue chemistry due to increasing atmospheric carbon dioxide (CO 2 ) concentrations have direct implications for tissue resistance to abiotic and biotic stress while living, and soil nutrient cycling when senesced as litter. Although the effects of elevated CO 2 concentrations on tree foliar chemistry are well documented, the effects on tree bark chemistry are largely unknown. The objective of this study was to determine the effects of a long-term elevated CO 2 treatment on the contents of individual elements, extractives, ash, lignin, and polysaccharide sugars of sweetgum (Liquidambar styraciflua L.) bark. Trees were harvested from sweetgum plots equipped with the Free-Air CO 2 Enrichment (FACE) apparatus, receiving either elevated or ambient CO 2 treatments over a 12-year period. Whole bark sections were partitioned into inner bark (phloem) and outer bark (rhytidome) samples before analysis. Principal component analysis, coupled with either Fourier transform infrared spectroscopy or pyrolysis-gas chromatography-mass spectrometry data, was also used to screen for differences. Elevated CO 2 reduced the N content (0.42 vs. 0.35 %) and increased the C:N ratio (109 vs. 136 %) of the outer bark. For the inner bark, elevated CO 2 increased the Mn content (470 vs. 815 mg kg -1 ), total extractives (13.0 vs. 15.6 %), and residual ash content (8.1 vs. 10.8 %) as compared to ambient CO 2 ; differences were also observed for some hemicellulosic sugars, but not lignin. Shifts in bark chemistry can affect the success of herbivores and pathogens in living trees, and as litter, bark can affect the biogeochemical cycling of nutrients within the forest floor. Results demonstrate that increasing atmospheric CO 2 concentrations have the potential to impact the chemistry of temperate, deciduous tree bark such as sweetgum.

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Comparative use of lichens, mosses and tree bark to evaluate nitrogen deposition in Germany

Cited by 49 publications

References 56 publications

Metal and metalloid speciation in plants: Overview, instrumentation, approaches and commonly assessed elements

Metal and metalloid speciation in plants: Overview, instrumentation, approaches and commonly assessed elements

Buellia dispersa (Lichens) Used as Bio-Indicators for Air Pollution Transport: A Case Study within the Las Vegas Valley, Nevada (USA)

Effects of long-term elevated CO2 treatment on the inner and outer bark chemistry of sweetgum (Liquidambar styraciflua L.) trees

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