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  • Corema album: unbiased dioecy in a competitive environment.

    Author(s) : Martins, A.Freitas, H.Costa, S.

    Author Affiliation : Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal.

    Author Email : anafdmartins@gmail.com

    Journal article : Plant Biology 2017 Vol.19 No.5 pp.824-834

    Abstract : Corema album is a dioecious coastal shrub. Dioecious plants growing in these resource-limited habitatshabitatsSubject Category: Habitats
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    may present spatial segregation of the sexes (SSS) or demographic biases because of the different reproductive effort between sexes. In these environments facilitation is a more common interaction between plants than competition. To assess factors determining the distribution of C. album male and female plants, we investigated the influence of habitat type (sand dunesdunesSubject Category: Topographic Features
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    and coastal woodlandswoodlandsSubject Category: Vegetation Types
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    woodlandsSubject Category: Habitats
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    ), assessed the occurrence of SSS or demographic biases and also a possible role of these shrubsshrubsSubject Category: Organism Groups
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    as nurse plants. We selected three C. album populations with the two habitat types. All C. album individuals were sexed, mapped and measured in three plots (20 m × 20 m) per population/habitat type. Presence and abundance of all plant species were recorded under five female and five male C. album plants as well as in equivalent open ground area in each of 15 plots. According to Ripley's K function result, C. album did not display SSS. Generalised linear mixed models (GLMM) show that differences in plant size were not related to plant sex. Plant inventory correspondence analysis showed that species composition and abundance were influenced by habitat type, population and the presence of a C. album individual, but not by its sex. GLMM indicated a detrimental effect of C. album on the co-occurring plants. Our results show that sexual dimorphismsexual dimorphismSubject Category: Miscellaneous
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    has allowed C. album to adapt to the environment avoiding SSS or significant demographic bias, suggesting a positive outlook for its conservation.

    ISSN : 1435-8603

    DOI : 10.1111/plb.12584

    Record Number : 20193193659

    Publisher : Wiley

    Location of publication : Berlin

    Country of publication : Germany

    Language of text : English

    Indexing terms for this abstract:

    Organism descriptor(s) : EricaceaeericaceaeSubject Category: Organism Names
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    , plantsplantsSubject Category: Organism Names
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    Descriptor(s) : botanical compositionbotanical compositionSubject Category: Properties
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    , coastal areascoastal areasSubject Category: Habitats
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    , dioecydioecySubject Category: Miscellaneous
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    , dunesdunesSubject Category: Topographic Features
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    , habitatshabitatsSubject Category: Habitats
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    , linear modelslinear modelsSubject Category: Techniques, Methodologies and Equipment
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    , mappingmappingSubject Category: Techniques, Methodologies and Equipment
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    , mapsmapsSubject Category: Publications
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    , nature conservationnature conservationSubject Category: Disciplines, Occupations and Industries
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    , plant competitionplant competitionSubject Category: Miscellaneous
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    , resource conservationresource conservationSubject Category: Disciplines, Occupations and Industries
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    , sexual dimorphismsexual dimorphismSubject Category: Miscellaneous
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    , shrubsshrubsSubject Category: Organism Groups
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    , woodlandswoodlandsSubject Category: Habitats
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    , woody plantswoody plantsSubject Category: Organism Groups
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    Identifier(s) : cartography, Corema album, sand dunes

    Broader term(s) : EricalesericalesSubject Category: Organism Names
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    , eudicotseudicotsSubject Category: Organism Names
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    , angiospermsangiospermsSubject Category: Organism Names
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    , SpermatophytaspermatophytaSubject Category: Organism Names
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    , plantsplantsSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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