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  • Limited seed dispersal may explain differences in forest colonization by the Japanese raisin tree (Hovenia dulcis Thunb.), an invasive alien tree in Southern Brazil.

    Author(s) : Dechoum, M. de S.Rejmánek, M.Castellani, T. T.Zalba, S. M.

    Author Affiliation : Plant Ecology Lab, Ecology and Zoology Department, Biological Sciences Center, Federal University of Santa Catarina - UFSC, Florianópolis, SC, Brazil.

    Author Email : mdechoum@gmail.com

    Journal article : Tropical Conservation Science 2015 Vol.8 No.3 pp.610-622 ref.64

    Abstract : In South American forests, the Japanese raisin tree (Hovenia dulcishovenia dulcisSubject Category: Organism Names
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    Thunb.) is an invasive tree that produces capsuled fruits attached to peduncles that grow thick and fleshy when ripe. Several frugivorous birdsbirdsSubject Category: Organism Names
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    are reported to be dispersal agents of H. dulcis. The spread of H. dulcis propagulespropagulesSubject Category: Organism Groups
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    to non-invaded sites was evaluated at a local spatial scale in deciduous forestsdeciduous forestsSubject Category: Vegetation Types
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    in Southern BrazilbrazilSubject Category: Geographic Entities
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    , in order to propose management strategies to prevent the arrival of propagules of such species in non-invaded sites. Seed arrival via birds was assessed by five 0.6×0.6 m seed traps in each of the 10×10 m plots in non-invaded sites at different distances from invaded sites. Seed arrival was also compared between control plots and plots where all H. dulcis trees were felled within a 30 m radius from the center of plots. A limitation in short distance seed dispersalseed dispersalSubject Category: Miscellaneous
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    by birds was observed in the study area. There was a negative exponential relationship between number of seedsseedsSubject Category: Anatomical and Morphological Structures
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    and distance from H. dulcis trees to non-invaded sites, and a positive exponential dependence of the number of seeds found in seed traps on the basal areabasal areaSubject Category: Properties
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    of H. dulcis. Felling H. dulcis trees was effective in reducing the arrival of seeds in non-invaded sites, resulting in significantly fewer seeds in managed plots than in control plots.

    ISSN : 1940-0829

    URL : http://tropicalconservationscience.mo...

    Record Number : 20153350867

    Publisher : Mongabay.com

    Location of publication : San Francisco

    Country of publication : USA

    Language of text : English

    Language of summary : Spanish French Portuguese

    Indexing terms for this abstract:

    Organism descriptor(s) : birdsbirdsSubject Category: Organism Names
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    , Hovenia dulcishovenia dulcisSubject Category: Organism Names
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    Descriptor(s) : basal areabasal areaSubject Category: Properties
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    , deciduous forestsdeciduous forestsSubject Category: Vegetation Types
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    , forestsforestsSubject Category: Habitats
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    , introduced speciesintroduced speciesSubject Category: Organism Groups
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    , invasive speciesinvasive speciesSubject Category: Organism Groups
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    , propagulespropagulesSubject Category: Organism Groups
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    , seed dispersalseed dispersalSubject Category: Miscellaneous
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    , seedsseedsSubject Category: Anatomical and Morphological Structures
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    Identifier(s) : exotic organisms, exotic species, introduced organisms, invasive organisms, invasives, non-indigenous organisms, non-indigenous species, non-native organisms, non-native species, nonindigenous organisms, nonindigenous species

    Geographical Location(s) : BrazilbrazilSubject Category: Geographic Entities
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    , Santa Catarinasanta catarinaSubject Category: Geographic Entities
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    Broader term(s) : vertebratesvertebratesSubject Category: Organism Names
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    , ChordatachordataSubject Category: Organism Names
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    , animalsanimalsSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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    , HoveniahoveniaSubject Category: Organism Names
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    , RhamnaceaerhamnaceaeSubject Category: Organism Names
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    , RosalesrosalesSubject 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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    , Community of Portuguese Language Countriescommunity of portuguese language countriesSubject Category: Institutions and Organisations
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    , Developing Countriesdeveloping countriesSubject Category: Miscellaneous
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    , Latin Americalatin americaSubject Category: Geographic Entities
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    , AmericaamericaSubject Category: Geographic Entities
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    , South Americasouth americaSubject Category: Geographic Entities
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    , Threshold Countriesthreshold countriesSubject Category: Miscellaneous
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    , BrazilbrazilSubject Category: Geographic Entities
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