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Los procesos a nivel de localización impulsan el establecimiento de poblaciones de aves exóticas en todo el mundo
David W Redding1, Alex L Pigot1, Ellie E Dyer1
1Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, UK.
Nature
|June 21, 2019
Resumen
Comprender el establecimiento de especies exóticas es crucial para la conservación. Las condiciones ambientales en los lugares de introducción, como la idoneidad climática y la presencia de otras especies exóticas, son factores clave que determinan el éxito.
Área de la Ciencia:
- Ecología
- Biología de la conservación
- Investigación sobre las especies invasoras
Sus antecedentes:
- La translocación de especies mediada por el hombre conduce a poblaciones exóticas, lo que conduce a la pérdida de biodiversidad.
- Predecir el éxito del establecimiento de especies exóticas es un desafío debido a factores complejos que interactúan.
Objetivo del estudio:
- Identificar los factores clave que influyen en el éxito del establecimiento de poblaciones de aves exóticas.
- Integrar las características de la ubicación, la especie y el evento de introducción para una mejor predicción de las invasiones.
Principales métodos:
- Análisis de regresión jerárquica bayesiana.
- Utilizó una base de datos global, espacial y temporalmente explícita de eventos de introducción de aves alienígenas.
Principales resultados:
- Las condiciones ambientales en los lugares de introducción (adecuación climática, presencia de otras especies exóticas) son determinantes primarios del establecimiento.
- Las características de las especies y la presión propagular tienen efectos secundarios, pero significativos, en el éxito del establecimiento.
Conclusiones:
- Es probable que el cambio ambiental antropogénico facilite futuras incursiones de especies exóticas.
- La predicción precisa de futuras invasiones requiere la integración de la ubicación, las especies y los datos a nivel de evento.
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