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Impacts of elevated CO2 and O3 on aspen leaf litter chemistry and earthworm and springtail productivityAuthor(s): Timothy D. Meehan; Michael S. Crossley; Richard L. Lindroth
Source: Soil Biology & Biochemistry. 42: 1132-1137.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
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DescriptionHuman alteration of atmospheric composition affects foliar chemistry and has possible implications for the structure and functioning of detrital communities. In this study, we explored the impacts of elevated carbon dioxide and ozone on aspen (Populus tremuloides) leaf litter chemistry, earthworm (Lumbricus terrestris) individual consumption and growth, and springtail (Sinella curviseta) population growth. We found that elevated carbon dioxide reduced nitrogen and increased condensed-tannin concentrations in leaf litter. These changes were associated with decreases in earthworm individual growth, earthworm growth efficiency, and springtail population growth. Elevated ozone increased fiber and lignin concentrations of leaf litter. These changes were not associated with earthworm consumption or growth, but were associated with increased springtail population growth. Our results suggest that changes in litter chemistry caused by increased carbon dioxide concentrations will have negative impacts on the productivity of diverse detritivore taxa, whereas those caused by increased ozone concentrations will have variable, taxon-specific effects.
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CitationMeehan, Timothy D.; Crossley, Michael S.; Lindroth, Richard L. 2010. Impacts of elevated CO2 and O3 on aspen leaf litter chemistry and earthworm and springtail productivity. Soil Biology & Biochemistry. 42: 1132-1137.
Keywordsaspen, carbon dioxide, collembola, decomposition, earthworm, growth, leaf litter, ozone, soil
- Effects of elevated concentrations of atmospheric CO2 and tropospheric O3 on leaf litter production and chemistry in trembling aspen and paper birch communities
- Chemistry and decomposition of litter from Populus tremuloides Michaux grown at elevated atmospheric CO2and varying N availability
- Wood properties of trembling aspen and paper birch after 5 years of exposure to elevated concentrations of CO2 and O3
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