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    Do Females Differ From Males Of European Yew (Taxus Baccata L.) In Dedrochronological Analysis?

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    Author
    Cedro, Anna
    Iszkulo, Grzegorz
    Affiliation
    Climatology and Marine Meteorology Department, Szczecin University
    Institute of Dendrology, Polish Academy of Sciences, ul. Parkowa 5, 62-035 Kórnik, Poland
    University of Zielona Góra, Department of Biology, Prof. Z. Szafrana 1
    Issue Date
    2011-01
    Keywords
    Dendrochronology
    Tree Rings
    Dendroclimatology
    Dioecy
    Tree-Ring Width
    Resource Allocation
    Yew
    Poland
    
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    Rights
    Copyright © Tree-Ring Society. All rights reserved.
    Collection Information
    This item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at editor@treeringsociety.org.
    Publisher
    Tree-Ring Society
    Journal
    Tree-Ring Research
    Citation
    Cedro, A., Iszkulo, G., 2011. Do females differ from males of European yew (Taxus baccata L.) in dendrochronological analysis? Tree-Ring Research 67(1):3-11.
    Abstract
    Female and male plants often differ in reproductive effort and habitat requirements. The aim of this study was to analyze these differences between the sexes and the effect of climate on tree-ring width in European yew (Taxus baccata). The study was conducted in five yew populations in western Poland. Wood samples were taken from 196 trees (98 females and 98 males) and subjected to the standard procedure of dendrochronological dating. Mean tree-ring width was significantly higher in males since about the beginning of sexual maturity. No such relationship was observed in the youngest population, which is the most distant from the current geographic limit for this species. In most of the analyzed populations, width of tree rings in female individuals, in contrast to males, was negatively correlated with high temperatures in August and September in the year prior to the formation of the tree ring, and correlated positively with precipitation in June and July in the current year. The differentiation of tree-ring width between males and females likely began when the yew trees reached sexual maturity, probably because of the assumed greater reproductive effort of females in comparison with males. The lack of difference in the youngest population may result from a short time since the beginning of sexual maturity or from a milder climate in that region. Different reactions of the two sexes to climate indicate that this may affect the range and viability of populations at the limits of the range.
    ISSN
    2162-4585
    1536-1098
    Additional Links
    http://www.treeringsociety.org
    Collections
    Tree-Ring Research, Volume 67, Issue 1 (Jan 2011)

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