Tracing decadal environmental change in ombrotrophic bogs using diatoms from herbarium collections and transfer functions
Language English Country Great Britain, England Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
23688732
DOI
10.1016/j.envpol.2013.04.007
PII: S0269-7491(13)00208-X
Knihovny.cz E-resources
- MeSH
- Climate Change statistics & numerical data MeSH
- Wetlands * MeSH
- Environmental Monitoring methods MeSH
- Soil MeSH
- Sphagnopsida MeSH
- Diatoms physiology MeSH
- Gardening MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Soil MeSH
Central European mountain bogs, among the most valuable and threatened of habitats, were exposed to intensive human impact during the 20th century. We reconstructed the subrecent water chemistry and water-table depths using diatom based transfer functions calibrated from modern sampling. Herbarium Sphagnum specimens collected during the period 1918-1998 were used as a source of historic diatom samples. We classified samples into hummocks and hollows according to the identity of dominant Sphagnum species, to reduce bias caused by uneven sampling of particular microhabitats. Our results provide clear evidence for bog pollution by grazing during the period 1918-1947 and by undocumented aerial liming in the early 90-ies. We advocate use of herbarized epibryon as a source of information on subrecent conditions in recently polluted mires.
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