"43410" . "2" . . "Cloned saplings of Norway spruce (Picea abies (L) K a r s t.) and beech (Fagus sylvatica L.) (7 years old) were exposed to enhanced UV-B irradiation (+25%) continuously over three growing seasons (1999-2001). Selected parameters of variable chlorophyll a fluorescence and pigment composition were analysed in the late summer of the third growing season to evaluate the influence of long-term elevated UV-B irradiation on broadleaf and conifer tree species. To obtain information on the xanthophyll cycle, the deepoxidation state (DEPS) was calculated. These tree species responded differentially to the long-term effects of enhanced UV-B radiation, Norway spruce was more sensitive compared to the European beech. The results show that in Norway spruce a long-term exposure to enhanced UV-B radiation under field conditions caused negative changes at the level of primary photosynthetic reactions. Contrary to the beech, this had higher degree of UV-B protective responses. UV-B radiation is not effective stressor t" . "Kalina, Ji\u0159\u00ED" . . "Differences in the photosynthetic UV-B response between European beech (Fagus sylvatica L.) and Norway spruce (Picea abies (l.) Karst.) samplings" . . . "1"^^ . . . "RIV/62156489:43410/08:00132393" . "Jedinci smrku ztepil\u00E9ho a buku lesn\u00EDho byly vystaveny zv\u00FD\u0161en\u00E9mu p\u0159\u00EDkonu UV-B radiace (+25%)b\u011Bhem t\u0159i vegeta\u010Dn\u00ED sez\u00F3ny (1999-2001)."@cs . "Cloned saplings of Norway spruce (Picea abies (L) K a r s t.) and beech (Fagus sylvatica L.) (7 years old) were exposed to enhanced UV-B irradiation (+25%) continuously over three growing seasons (1999-2001). Selected parameters of variable chlorophyll a fluorescence and pigment composition were analysed in the late summer of the third growing season to evaluate the influence of long-term elevated UV-B irradiation on broadleaf and conifer tree species. To obtain information on the xanthophyll cycle, the deepoxidation state (DEPS) was calculated. These tree species responded differentially to the long-term effects of enhanced UV-B radiation, Norway spruce was more sensitive compared to the European beech. The results show that in Norway spruce a long-term exposure to enhanced UV-B radiation under field conditions caused negative changes at the level of primary photosynthetic reactions. Contrary to the beech, this had higher degree of UV-B protective responses. UV-B radiation is not effective stressor t"@en . . "1335-342X" . "Marek, Michal V." . "363541" . "Z(MSM6215648902)" . "\u0160prtov\u00E1, Mirka" . . . "Ekol\u00F3gia (Bratislava) : international journal for ecological problems of the biosphere" . "Rozd\u00EDly ve vyu\u017Eit\u00ED UV-B ve fotosynt\u00E9ze u buku lesn\u00EDho a smrku ztepil\u00E9ho"@cs . . "Differences in the photosynthetic UV-B response between European beech (Fagus sylvatica L.) and Norway spruce (Picea abies (l.) Karst.) samplings"@en . . "Differences in the photosynthetic UV-B response between European beech (Fagus sylvatica L.) and Norway spruce (Picea abies (l.) Karst.) samplings" . "Urban, Otmar" . "SK - Slovensk\u00E1 republika" . "\u0160punda, Vladim\u00EDr" . "RIV/62156489:43410/08:00132393!RIV09-MSM-43410___" . "5"^^ . "Norway spruce; enhanced UV-B radiation; European beech"@en . . "[4C63D69B6E67]" . "Rozd\u00EDly ve vyu\u017Eit\u00ED UV-B ve fotosynt\u00E9ze u buku lesn\u00EDho a smrku ztepil\u00E9ho"@cs . . "27" . . "13"^^ . . "Differences in the photosynthetic UV-B response between European beech (Fagus sylvatica L.) and Norway spruce (Picea abies (l.) Karst.) samplings"@en .