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Pre-dispersal strategies by Quercus schottkyana to mitigate the effects of weevil infestation of acorns
Xia, Ke; Harrower, William L.; Turkington, Roy; Tan, Hong-Yu; Zhou, Zhe-Kun
2016
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume6Issue:xPages:-
AbstractWe investigated how pre-dispersal strategies may mitigate the effects of weevil infestation of acorns in a population of Quercus schottkyana, a dominant oak in Asian evergreen broad-leaved forests, and assess if weevil infestation contributes to low seedling recruitment. We counted the number of acorns produced, daily from the end of August to mid-late November for 9 years from 2006-2014. We also recorded the rate of acorn infestation by weevils and acorn germination rates of weekly collections. Annual acorn production was variable, but particularly low in 2011 and 2013. There was no trade-off between acorn production and acorn dry mass. However, acorns produced later in the season were significantly heavier. For most years: (i) the rate of weevil infestation was negatively density dependent (a greater proportion of acorns died with increased acorn density), (ii) the percentage germination of acorns was positively density dependent (proportionately more acorns germinated with increased density), and (iii) as the season progressed, the percentage of infested acorns declined while germination rates increased. Finally, (iv) maximum acorn production, percentage infestation and percentage germination were asynchronous. Although pre-dispersal mortality is important it is unlikely to be the primary factor leading to low recruitment of oak seedlings.
Subject AreaScience & Technology - Other Topics
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10456
Collection古生态研究组
Corresponding AuthorZhou, Zhe-Kun
Recommended Citation
GB/T 7714
Xia, Ke,Harrower, William L.,Turkington, Roy,et al. Pre-dispersal strategies by Quercus schottkyana to mitigate the effects of weevil infestation of acorns[J]. SCIENTIFIC REPORTS,2016,6(x):-.
APA Xia, Ke,Harrower, William L.,Turkington, Roy,Tan, Hong-Yu,&Zhou, Zhe-Kun.(2016).Pre-dispersal strategies by Quercus schottkyana to mitigate the effects of weevil infestation of acorns.SCIENTIFIC REPORTS,6(x),-.
MLA Xia, Ke,et al."Pre-dispersal strategies by Quercus schottkyana to mitigate the effects of weevil infestation of acorns".SCIENTIFIC REPORTS 6.x(2016):-.
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