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Influencia de la filogenia en el ensamblaje de la comunidad de hongos y el funcionamiento del ecosistema
Hafiz Maherali1, John N Klironomos
1Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1. maherali@uoguelph.ca
Science (New York, N.Y.)
|June 26, 2007
Resumen
El conservadurismo de rasgos filogenéticos promueve la coexistencia de las especies al reducir la competencia y mejora la función del ecosistema a través de la complementariedad. Este estudio demuestra cómo la historia evolutiva da forma a las comunidades ecológicas y su productividad.
Área de la Ciencia:
- Ecología Ecología Ecología.
- Biología evolutiva Biología evolutiva.
- Ciencia de los ecosistemas Ciencia de los ecosistemas.
Sus antecedentes:
- Comprender la coexistencia de las especies y el funcionamiento del ecosistema es un objetivo central en ecología.
- Las pruebas experimentales de mecanismos que explican simultáneamente ambos procesos siguen siendo un desafío.
- El papel del conservadurismo de rasgos filogenéticos en la asamblea de la comunidad y la función del ecosistema requiere una mayor investigación.
Objetivo del estudio:
- Para probar experimentalmente si el conservadurismo filogenético influye en la asamblea de la comunidad y el funcionamiento del ecosistema.
- Para determinar si la similitud funcional entre especies relacionadas afecta la coexistencia de las especies.
- Para evaluar el impacto de la riqueza de especies realizada en la productividad de las plantas.
Principales métodos:
- Utilizó un sistema experimental de plantas micorrizas.
- Comunidades construidas con un número controlado de especies de hongos.
- Evaluar la riqueza de especies y la productividad de las plantas después de un año.
Principales resultados:
- La riqueza de especies realizadas fue más alta en las comunidades con especies iniciales más distantes.
- Las comunidades con mayor riqueza de especies realizadas exhibieron una mayor productividad vegetal.
- El conservadurismo de rasgos filogenéticos se relacionó tanto con el aumento de la coexistencia como con la mejora de la función del ecosistema.
Conclusiones:
- El conservadurismo de rasgos filogenéticos puede impulsar la asamblea de la comunidad promoviendo la coexistencia.
- La competencia reducida entre linajes evolutivos distintos facilita la coexistencia.
- La complementariedad funcional entre linajes mejora la función del ecosistema, particularmente la productividad de las plantas.
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