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National Repository of Grey Literature 2 records found  Search took 0.02 seconds. 
Extrémní šířkové přírůsty smrku na gradientu nadmořské výšky na Šumavě a jejím podhůří
 ČEJKOVÁ, Alžběta
Extreme radial growth reactions were analyzed over a 79-year period (1922-2000) to compare response of Norway spruce (Picea abies [L.] Karst.) along an altitudinal gradient (376-1221 m a.s.l.) in the Šumava Mountains, the Czech Republic. The comparison of the pointer years showed a specific pattern for altitudinal zones. Negative pointer years were usually induced by summer drought at low elevations and by wet-cold summer at high altitudinal zone. These two main limiting factors were probably combined at the middle altitudinal zone. Detailed understanding of the extreme tree ring pattern along the altitudinal and geographical scale may be used as one of the additional indicators of dendrochronological dating and provenance identification of spruce sample among altitudinal zones in the Šumava Mountains.
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Dendrochronology of representative autochtonnous tree species on environmental and temporal gradients
 ČEJKOVÁ, Alžběta
This thesis is focused on application methods of dendrochronology on various ecological and historical aspects of forest communities, human management practices, and historical utilization of wood. Studies revealed growth responses of trees in various type of forest vegetation represented by spruce forest, alder carr and alluvial forests and involved autochthonous tree species with all morphological types of wood. These works demonstrated necessity of dynamic evolving of the regional chronologies for the Czech Republic.
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