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La extraordinaria biodiversidad de Madagascar: amenazas y oportunidades
Hélène Ralimanana1, Allison L Perrigo2,3, Rhian J Smith3,4
1Royal Botanic Gardens, Kew, Kew Madagascar Conservation Centre, Antananarivo, Madagascar.
Science (New York, N.Y.)
|December 1, 2022
Resumen
Madagascar y sus islas
Área de la Ciencia:
- Biología de la conservación
- Ciencias de la biodiversidad
- Ciencias del medio ambiente
Sus antecedentes:
- La biodiversidad única de Madagascar se enfrenta a graves amenazas por las actividades humanas.
- Comprender el estado de conservación de sus especies endémicas es fundamental.
Objetivo del estudio:
- Revisar el estado de conservación de la biodiversidad terrestre y de agua dulce de Madagascar.
- Analizar las amenazas, la cobertura de las áreas protegidas y los esfuerzos de conservación ex situ.
Principales métodos:
- Análisis de datos de los estados de conservación a nivel de especie (documentados y pronosticados).
- Evaluación de las amenazas, exhaustividad de la red de áreas protegidas.
- Revisión de las colecciones y programas ex situ.
Principales resultados:
- Las áreas protegidas cubren el 10,4% de la tierra, salvaguardando la mayoría de las especies nativas y un alto porcentaje de especies amenazadas.
- La sobreexplotación y la agricultura insostenible son las principales amenazas identificadas por la Lista Roja de la UICN y los análisis de las redes neuronales bayesianas.
- Porciones significativas de vertebrados (97,7%) y plantas (79,6%) están dentro de las áreas protegidas.
Conclusiones:
- Las áreas protegidas de Madagascar son cruciales pero requieren estrategias mejoradas para hacer frente a amenazas complejas.
- Se proponen cinco oportunidades clave de acción para beneficiar a la biodiversidad y a las poblaciones humanas.
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