English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/77032
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

The greater growth rate of male over female of the dioecious tree Juniperus thurifera only in worse habitat conditions

AuthorsIszkuło, Grzegorz; Jasińska, Anna Katarzyna; Romo, Àngel ; Tomaszewski, Dominik; Szmyt, Janusz
KeywordsReproductive effort
Sex segregation
Tree-ring width
Juniperus communis subsp.communis
Issue Date2011
PublisherPolish Academy of Sciences
CitationDendrobiology 66: 15-24 (2011)
AbstractDioecy is a mating system in which a greater reproductive effort has been observed in one sex than the other. This is expressed in differences between the sexes in growth rate and spatial segregation. The spatial structure of Juniperus thurifera subsp. thurifera and Juniperus communis subsp. communis and growth rate of tree-ring width of J. thurifera were tested in different habitat conditions in Santo Domingo de Silos in northern Spain. We analyzed junipers growing on the eastern slope, with better habitat conditions, and the western, with poorer habitat conditions. The studies found that males of J. communis were taller when compared to the females, both on the eastern and the western slope. J. thurifera females were taller on the eastern slope (the better habitat), but shorter on the western slope as compared to males. J. thurifera males and females on the eastern slope had the greater tree-ring width in comparison with those on the western slope. The annual tree–ring width of males dominated over females on both slopes at first, probably from the time of sexual maturation. However, these differences persisted to the end of the analyzed period only on the poorer western slope. The growth rate of females and males after several years was equal on the eastern slope. Spatial segregation has not been shown, probably due to the homogeneity of the habitat on both slopes. Studies have shown that the decrease of growth rate in J. thurifera females can occur only in the poorer habitat conditions.
Publisher version (URL)http://www.idpan.poznan.pl/index.php/content/-vol-66/885-66-15-24.html
Identifiersissn: 1641-1307
Appears in Collections:(IBB) Artículos
Files in This Item:
File Description SizeFormat 
greater_growth_rate_male_over.pdf721,91 kBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.