Growth onset, senescence, and reproductive development of meadow species in mesocosms exposed to elevated O3 and CO2
In: Environmental pollution (1987), Jg. 145 (2007), Heft 3, S. 850-860
academicJournal
- print, 1 p.3/4
Zugriff:
We studied the effects of elevated O3 (40-50 ppb) and CO2 (+100 ppm) alone and in combination on the growth onset, relative chlorophyll meter values, and reproductive development of meadow species grown in ground-planted mesocosms using open-top chambers. The 3-year study was conducted in the summers of 2002-2004. Elevated 03 decreased the early season coverage of plant communities and delayed the flowering of Campanula rotundifolia and Vicia cracca. The relative chlorophyll meter values of Fragaria vesca leaves were decreased by 03. Ozone also reduced the overall number of produced flowers, but as far as individual species were concerned, 03 had significant effects only on Campanula rotundifolia. In the case of Fragaria vesca, O3 decreased the fresh weight of individual berries. The effects of CO2 were less pronounced, and CO2 generally did not ameliorate the negative effects of O3. Changes in reproduction may affect the long-term fate of the whole community.
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Growth onset, senescence, and reproductive development of meadow species in mesocosms exposed to elevated O3 and CO2
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Autor/in / Beteiligte Person: | RÏMÖ, Kaisa ; KANERVA, Teri ; OJANPERÄ, Katinka ; MANNINEN, Sirkku |
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Zeitschrift: | Environmental pollution (1987), Jg. 145 (2007), Heft 3, S. 850-860 |
Veröffentlichung: | Oxford: Elsevier, 2007 |
Medientyp: | academicJournal |
Umfang: | print, 1 p.3/4 |
ISSN: | 0269-7491 (print) |
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