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Long-term vegetation changes in bogs exposed to high atmospheric deposition, aerial liming and climate fluctuation

2011; Wiley; Volume: 22; Issue: 5 Linguagem: Inglês

10.1111/j.1654-1103.2011.01297.x

1654-1103

Petra Hájková, Michal Hájek, Kamil Rybníček, Martin Jiroušek, Lubomír Tichý, Štěpánka Králová, Eva Mikulášková,

Bryophyte Studies and Records

Journal of Vegetation ScienceVolume 22, Issue 5 p. 891-904 Long-term vegetation changes in bogs exposed to high atmospheric deposition, aerial liming and climate fluctuation Petra Hájková, Petra Hájková Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech Republic Department of Vegetation Ecology, Institute of Botany, Academy of Sciences of the Czech Republic, Lidická 25/27, CZ 657 20 Brno, Czech RepublicSearch for more papers by this authorMichal Hájek, Michal Hájek Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech Republic Department of Vegetation Ecology, Institute of Botany, Academy of Sciences of the Czech Republic, Lidická 25/27, CZ 657 20 Brno, Czech RepublicSearch for more papers by this authorKamil Rybníček, Kamil Rybníček Department of Vegetation Ecology, Institute of Botany, Academy of Sciences of the Czech Republic, Lidická 25/27, CZ 657 20 Brno, Czech RepublicSearch for more papers by this authorMartin Jiroušek, Martin Jiroušek Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech RepublicSearch for more papers by this authorLubomír Tichý, Lubomír Tichý Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech RepublicSearch for more papers by this authorŠtěpánka Králová, Štěpánka Králová Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech RepublicSearch for more papers by this authorEva Mikulášková, Eva Mikulášková Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech RepublicSearch for more papers by this author Petra Hájková, Petra Hájková Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech Republic Department of Vegetation Ecology, Institute of Botany, Academy of Sciences of the Czech Republic, Lidická 25/27, CZ 657 20 Brno, Czech RepublicSearch for more papers by this authorMichal Hájek, Michal Hájek Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech Republic Department of Vegetation Ecology, Institute of Botany, Academy of Sciences of the Czech Republic, Lidická 25/27, CZ 657 20 Brno, Czech RepublicSearch for more papers by this authorKamil Rybníček, Kamil Rybníček Department of Vegetation Ecology, Institute of Botany, Academy of Sciences of the Czech Republic, Lidická 25/27, CZ 657 20 Brno, Czech RepublicSearch for more papers by this authorMartin Jiroušek, Martin Jiroušek Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech RepublicSearch for more papers by this authorLubomír Tichý, Lubomír Tichý Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech RepublicSearch for more papers by this authorŠtěpánka Králová, Štěpánka Králová Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech RepublicSearch for more papers by this authorEva Mikulášková, Eva Mikulášková Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech RepublicSearch for more papers by this author First published: 11 May 2011 https://doi.org/10.1111/j.1654-1103.2011.01297.xCitations: 31 Co-ordinating Editor: Otto Wildi Hájková, P. (corresponding author, [email protected]); Hájek, M. ([email protected]); Jiroušek, M. ([email protected]); Tichý, L. ([email protected]); Králová, Š ([email protected]) & Mikulášková, E.: ([email protected]): Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ 61137 Brno, Czech RepublicHájková, P.; Hájek, M. & Rybníček, K.: Department of Vegetation Ecology, Institute of Botany, Academy of Sciences of the Czech Republic, Lidická 25/27, CZ 657 20 Brno, Czech Republic Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Questions: Is vegetation composition of ombrotrophic bogs with an undisturbed water regime resistant or sensitive to ongoing high atmospheric deposition and climatic changes? Location: The Sudeten Mountains (Czech Republic). Methods: Species composition of bryophytes and vascular plants was sampled in 25 permanent plots in suboceanic bogs of the Jizerské hory Mountains and in 26 permanent plots in subcontinental bogs of the Hrubý Jeseník Mountains. The permanent plots were established and first sampled in 1991. These plots were re-sampled after 14 and 17 years, respectively. We also used historical vegetation plots (1947–1949; 1980) from the same localities in order to reveal possible changes that might start earlier. Water chemistry was analysed annually, usually three times a year. Compositional changes were analysed by PERMANOVA, β-diversity changes by PERMDISP and other changes by t-test and Fisher's exact test. Results: At the community level, no statistically significant changes were detected in permanent plots (PERMANOVA, PERMDISP), either in hollows or in hummocks, but the vegetation composition changed between the oldest (historical) and the newest data sets. At the level of functional groups, cover of Cyperaceae significantly decreased and cover of other herbs (excluding graminoids) and Sphagna increased in the Hrubý Jeseník Mountains, whereas no changes were detected in the Jizerské hory Mountains. Cover of ericoid dwarf shrubs has not changed in either area. At the level of particular species, the frequency of Sphagnum magellanicum, Carex limosa, Scheuchzeria palustris and Vaccinium myrtillus decreased, while the frequency of Straminergon stramineum, Sphagnum recurvum agg., Eriophorum angustifolium and Luzula sylvatica increased. These changes were more evident when recent and historical data were compared. Conclusions: When water regime is not affected, the bog vegetation seems to be rather resistant to high atmospheric deposition and climate fluctuation. A significant change of the species composition occurs only in the long-term perspective. Particular species could, however, decrease or increase their frequencies more rapidly. For some of these species a positive or negative response to nitrogen availability was also found in other studies, whereas for other species further research is needed in order to separate the effects of atmospheric deposition and internal ecosystem dynamics. Supporting Information Appendix S1. List of study permanent plots and their geographical location (coordinates are in WGS 84 system). Column "orig." refers to plot numbers in the publications of Rybníček (1997, 2000), which present additional information. Appendix S2. Composition of particular functional species groups. Appendix S3. The most common species (with frequency at least 30% in at least one group of vegetation plots) in the study plots. The table shows only the species whose frequency did not change in the permanent plots. The species showing a significant change in frequency are listed in Table 5. Please note: Wiley-Blackwell is not responsible for the content or functionality of any supporting materials supplied by the authors. Any queries (other than missing material) should be directed to the corresponding author for the article. Filename Description JVS_1297_sm_appendixonline.doc183 KB Supporting info item Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. References Aerts, R., Wallén, B. & Malmer, N. 1992. 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