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The invasive Tradescantia zebrina does not inhibit germination of the native Hymenaea courbaril but does modulate its growth

2023; Taylor & Francis; Volume: 16; Issue: 1-2 Linguagem: Inglês

10.1080/17550874.2023.2239242

1755-1668

Maria E. N. Silva, José Domingos Ribeiro‐Neto, Marília Bruzzi Lion, Rosemberg F. Menezes,

Ecology and Vegetation Dynamics Studies

ABSTRACTBackground Invasive plant species can modify ecosystem structure and function, potentially leading to the loss of native species, environmental and biotic homogenisation, changes in nutrient cycling, impairment of ecosystem services, and decrease in the rate of regeneration of plant recruits.Aims We assessed the effects of the non-native and invasive vine Tradescantia zebrina on the germination and development of the native tree Hymenaea courbaril in north-eastern Brazil. We hypothesised that the invasive species would negatively impact the germination and development, and, via competition, the growth of the native species.Methods We conducted a germination experiment for six months in seven forest patches. Seeds of H. courbaril were cultivated in four possible combinations of two treatments: under a cover with and without T. zebrina, and on soil that originated from places with and without T. zebrina present.Results Neither T. zebrina cover or soil affected the germination or biomass of H. courbaril during the experiment. H. courbaril seedlings were taller and had longer roots when cultivated in soil that originated from places with T. zebrina.Conclusions T. zebrina presence alters soil properties in a way that triggers morphological responses in H. courbaril, which can be associated to a perceived competition context.KEYWORDS: alien speciesbiological invasionBrejos de Altitudecompetitionexotic plantsplant heightroot lengthtropical forest AcknowledgmentsWe thank Carolina Angélica Araújo de Azevedo for valuable help with language and Miriam P. Pinto for statistical advice.Disclosure statementNo potential conflict of interest was reported by the authors.Data depositionThe data that support the findings of this study are openly available in Open Science Foundation – OSF at https://osf.io/, reference number osf.io/a7pmfSupplementary materialSupplemental data for this article can be accessed online at https://doi.org/10.1080/17550874.2023.2239242Additional informationFundingMarilia Lion received a scholarship from Fundação de Amparo à Pesquisa do Estado da Paraíba – FAPESQ, Nº 07/2021 SEECT/FAPESQ/PB.Notes on contributorsMaria E. N. SilvaMaria E. N. Silva is a high school teacher and a researcher on plant biological invasion.José D. Ribeiro N.José D. Ribeiro N. is a professor with experience in applied ecology, landscape ecology, trophic interactions between plants and ants, plant community ecology, ant community ecology and herbivory.Marília B. LionMarília B. Lion is a post-doctoral researcher interested in biodiversity spatial patterns and processes.Rosemberg F. MenezesRosemberg F. Menezes is a professor of ecology, with experience in community ecology, mostly interested in assessing how environmental changes (driven by natural or anthropogenic disturbances) affect biodiversity, the structure of food-webs and functioning of freshwater and terrestrial ecosystems.