Leucaena leucocephala (Fabaceae), especie invasora en la Argentina
; Delucchi, Gustavo Otros responsables
Fecha
10/2022
Editorial
Sociedad Argentina de Botánica
Revista
Boletín de la Sociedad Argentina de Botánica
Título del libro
Nombre del evento
Fecha del evento
Institución organizadora
ISSN
0373-580X
eISSN
1851-2372
ISBN
Idioma
Español
Tipo del evento
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Resumen
Introducción y objetivos: Leucaena leucocephala (Fabaceae) ha sido considerada como una de las 100 especies más invasoras a escala global. A pesar de su amenaza potencial, su introducción se promueve cada vez más para la agrosilvicultura, la ornamentación, el sombreado y la artesanía en las regiones forestales cálidas y templadas de la Argentina. La amenaza a la biodiversidad de las poblaciones de Leucaena se ha informado en todo el mundo, donde el control no fue efectivo. Los objetivos del presente estudio fueron efectuar un registro actualizado de las poblaciones naturalizadas en Argentina, y brindar información sobre los procesos históricos y actuales de naturalización e invasión. M&M: Los registros se documentaron mediante la recolección de material a campo y consulta de material depositado en herbarios. También se realizaron observaciones a campo para conocer los procesos actuales de naturalización y su interacción con dispersores/depredadores. Resultados: Se estableció el estatus de invasora en Argentina y se reconocieron dos vías de introducción. En base al aspecto general de los bosquecillos y el microhábitat que se genera en los ambientes invadidos se considera a esta especie como transformadora en la Argentina. Se indican las características reproductivas y su interacción con otros estamentos de la biodiversidad regional relacionados con el proceso invasor. Conclusiones: La interpretación de etiquetas de herbario permitió establecer que en 1921 ya estaba naturalizada en el país. Se discute la intervención del ser humano en su dispersión y se plantean futuros escenarios.
Background and aims: Leucaena leucocephala (Fabaceae) has been considered one of the 100 most invasive species on a global scale. Despite its potential threat, its introduction is increasingly being promoted for agroforestry, ornamentation, shading and handicrafts in the warm and temperate forest regions of Argentina. The threat of Leucaena populations to biodiversity has been reported worldwide, where control was not effective. The aims of the present study were to update the record of naturalized populations in Argentina and provide information on the historical and current processes of naturalization and invasion. M&M: The records were documented by collecting plant material in the field and examination of material housed in herbaria. Field observations were also made to observe current naturalization processes and interaction with dispersers/predators. Results: The invasive condition was confirmed in Argentina and two introduction pathways were recognized. Based on the general appearance of the groves and the microhabitat that is generated in the invaded environments, it is considered a transformer species in Argentina. The reproductive characteristics and their interaction with other strata of regional biodiversity related to the invasive process are indicated. Conclusions: The analysis of the herbarium labels allowed detecting that in 1921 this species was already naturalized in the country. The intervention of humans in its dispersal is discussed and future scenarios are proposed.
Background and aims: Leucaena leucocephala (Fabaceae) has been considered one of the 100 most invasive species on a global scale. Despite its potential threat, its introduction is increasingly being promoted for agroforestry, ornamentation, shading and handicrafts in the warm and temperate forest regions of Argentina. The threat of Leucaena populations to biodiversity has been reported worldwide, where control was not effective. The aims of the present study were to update the record of naturalized populations in Argentina and provide information on the historical and current processes of naturalization and invasion. M&M: The records were documented by collecting plant material in the field and examination of material housed in herbaria. Field observations were also made to observe current naturalization processes and interaction with dispersers/predators. Results: The invasive condition was confirmed in Argentina and two introduction pathways were recognized. Based on the general appearance of the groves and the microhabitat that is generated in the invaded environments, it is considered a transformer species in Argentina. The reproductive characteristics and their interaction with other strata of regional biodiversity related to the invasive process are indicated. Conclusions: The analysis of the herbarium labels allowed detecting that in 1921 this species was already naturalized in the country. The intervention of humans in its dispersal is discussed and future scenarios are proposed.
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