Managing plant invasions that pose risk to protected areas: a case study
DOI:
https://doi.org/10.67154/BIN.v9.n2.2026.56Palabras clave:
Biological invasion, Coastal ecosystem, chemical control, control cost, coastal scrub, invasive non-native plants , restingaResumen
Invasive non-native plants in the surroundings of municipal protected areas were eliminated while determining best management methods and recording control costs. Control methods were defined for the key invasive non-native species in the ecosystem, all identified as introduced through the ornamental plant trade. The selection of high-risk species was made based on the plants’ history of invasion in similar ecosystems in other areas in Brazil or locally, corroborated by expert opinion. Control costs were calculated from the total investment divided by the number of working hours and subdivided in cost categories, registered in detail to provide reference for future contracts issued by the municipality. A series of tests were performed for Asparagus densiflorus, with best control results obtained with a solution of Metsulphuron Methyl 0.15g/l + 1% Glyphosate + 15 drops penetrant + 20 drops dye + water, and for Furcraea foetida, with high efficacy obtained with a 2% solution of Triclopyr + dye + water applied to the base of cut leaves and central stem. The same method and solution were successfully applied to cut stumps and the base of the central stem of Yucca filamentosa, while Asparagus setaceus was highly susceptible to 1% Glyphosate + dye + water. Carpobrotus acinaciformis was fully controlled with a solution of Glyphosate at 1% dilution. The total cost amounted to US$ 51,894.00, a cost per hour of US$ 23.25. Financial mechanisms such as the public policy applied to our work may be a model for potential adoption by other countries.
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Derechos de autor 2026 Sílvia Ziller, Alexandre D. Schmidt, Christopher H. Graves, Guilherme Ritzmann, Lucas Felizardo, Brisa Marciniak, Gabriela Moraes da Silva, Mariana Adami Borgert, Michele S. Dechoum
Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-SinDerivadas 4.0.
