Ficha de avaliação EICAT
Tradescantia fluminensis
MO · Moderado
Avaliação histórica recuperada de registros do SIGEEI. A estrutura e os campos foram preservados; a confirmação permanece pendente.
Identificação e síntese
Nomenclature and linkage
The original assessment name is preserved. The accepted name and synonyms support discovery and reconciliation without overwriting the historical EICAT record.
Taxonomia registrada
Classificação canônica recuperada da integração com o GBIF. O sistema explicita os níveis que a própria resposta do GBIF não informa.
Avaliação de impactos
1. Redução no desempenho de indivíduos da biota nativa
Resposta: Não
2. Declínio no tamanho populacional de espécie nativa
Resposta: Sim
Mecanismos selecionados: (1) Competição,(10) Impacto físico no ecossistema,(11) Impacto estrutural no ecossistema
Evidências por mecanismo
Compete com espécies nativas na Flórida, reduzindo a abundância e diversidade (Seitz & Clark, 2016)
Native forest seedling species richness and abundance decreased exponentially with increasing Tradescantia biomass. The compositions of the extant vegetation, seed rain and seed bank were consistent with our interpretation that light availability drives the differences in seedling species richness and abundance between Tradescantia and non-Tradescantia habitats. (Standish et al., 2001).
Overall, seven taxa were found only in samples from Tradescantia-infested plots, while eight others were recorded only from Tradescantia-free plots, indicating significant alteration / turnover in community composition (Yeates & Williams, 2001). Recognisable taxonomic units (RTUs) richness was lower in Tradescantia plots compared with non-Tradescantia plots. The impact of Tradescantia could be a result of the weed’s tall, dense vegetation structure and associated microclimate, relative to native ground covers. (Standish, 2003)
Referências: Yeates, G. W., & Williams, P. A. (2001). Influence of three invasive weeds and site factors on soil microfauna in New Zealand. Pedobiologia, 45(4), 367-383. Standish, R. J. (2004). Impact of an invasive clonal herb on epigaeic invertebrates in forest remnants in New Zealand. Biological Conservation, 116(1), 49-58. Standish, R. J., Robertson, A. W., & Williams, P. A. (2001). The impact of an invasive weed Tradescantia fluminensis on native forest regeneration. Journal of Applied Ecology, 38(6), 1253-1263. Seitz, J. C., & Clark, M. (2016). Identification, biology, and control of Small-leaf Spiderwort (Tradescantia fluminensis): A widely introduced invasive plant. EDIS, 2016(6), 7-7.
3. Extinção local de população nativa
Resposta: Não
4. Reversibilidade da extinção local após remoção do táxon
Resposta: Nenhuma extinção registrada