Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Qinfeng GuoDale G. Brockway; Xiongwen Chen
    Date: 2017
    Source: Plant Ecology & Diversity
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (830.0 KB)


    Background : The possible effects of climate change on sex allocation of a species have recently emerged as a topic of interest, relative to population sustainability via natural regeneration. Also, the universality of pollen limitation for reproduction and how climate may in fl uence it in different taxonomic groups remain to be explored. Aims : The aim of this study was to examine how climate fl uctuation may affect sex allocation in Pinus palustris . Methods : We used a long-term observational data on P. palustris (1957 – 2014), including pollen, female conelets and cone production. Results : We found that, unlike cone production with its ca. 3-year cycle, (1) pollen (male) and unfertilised conelet (female) production did not exhibit any temporal cycles, (2) pollen and unfertilised conelet production showed lower variation than cone production, (3) pollen and unfertilised conelet production were positively correlated to one another and to fi nal cone production, (4) an optimal male-to-female sex allocation ratio exists for promoting cone production and (5) sex allocation ratio was positively correlated with temperature. Conclusions : Our fi ndings shed new light on both the reproductive ecology and management of P. palustris ecosystems under changing climates (e.g., through alteration of pollen density and thus the resulting sex allocation).

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Guo, Qinfeng; Brockway, Dale G.; Chen, Xiongwen. 2017. Temperature-related sex allocation shifts in a recovering keystone species, Pinus palustris. Plant Ecology and Diversity. 10(4): 303-310.


    Google Scholar


    climate change, cone production, sex ratio, life cycle, longleaf pine, long-term study, pollen limitation, regeneration

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page