Journal
BRAZILIAN JOURNAL OF BIOLOGY
Volume 70, Issue 2, Pages 311-316Publisher
INT INST ECOLOGY
DOI: 10.1590/S1519-69842010000200012
Keywords
invasive species; Pteridium arachnoideum; tropical trees; bracken; germination; seedlings
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Funding
- FAPERJ, Rio de Janeiro Government
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In order to identify the effect of P. arachnoideum, we studied 11 native tree species commonly used in reforestation projects. Bioassays were conducted in laboratory to evaluate the effect of bracken leachate on the germination and morphology of seedlings. Juveniles of some of these species were planted in two adjacent but contrasting areas in relation to the dominance of P. arachnoideum. The evaluation of growth and survivorship was performed alter six and twelve months. This study reveals that for some pioneer and secondary trees P arachnoideum leachate exerted an inhibitory effect on seed germination and seedling morphology. Field experiments revealed that pioneers are apparently more resistant to P arachnoideum leachate than secondary species.
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