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Evolución y biogeografía de los invertebrados de respiraderos y filtraciones de aguas profundas
C L Van Dover1, C R German, K G Speer
1Biology Department, College of William and Mary, Williamsburg, VA 23187, USA. cindy_vandover@wm.edu
Science (New York, N.Y.)
|February 16, 2002
Resumen
Los respiraderos de aguas profundas y las filtraciones frías albergan ecosistemas únicos alimentados por la quimiosíntesis. Las corrientes oceánicas y los cambios tectónicos influyen en la evolución y distribución de estas especies de invertebrados de aguas profundas.
Área de la Ciencia:
- Biología Marina Biología Marina.
- Oceanografía La oceanografía es la oceanografía.
- Geología Geología Geología.
Sus antecedentes:
- Las fuentes hidrotermales de aguas profundas y las filtraciones frías son ecosistemas marinos únicos.
- Estos ambientes se caracterizan por fluidos ricos en nutrientes que emanan del fondo marino.
- Las redes alimentarias en estos ecosistemas se basan en la producción primaria quimioautotrófica.
Objetivo del estudio:
- Para investigar los patrones biogeográficos de los invertebrados de ventilación y filtración de aguas profundas.
- Comprender el papel de la historia tectónica del Cenozoico y la circulación oceánica en la conformación de estos patrones.
Principales métodos:
- La dispersión de larvas por las corrientes oceánicas profundas es el principal modo de colonización.
- Análisis de la historia evolutiva de las especies de invertebrados de ventilación y filtración.
Principales resultados:
- Muchas especies de invertebrados de ventilación y filtración han evolucionado recientemente, en los últimos 100 millones de años.
- La dispersión de larvas es crucial para que los invertebrados colonicen hábitats de aguas profundas adecuados.
Conclusiones:
- La evolución reciente de los invertebrados de ventilación y filtración sugiere una influencia significativa de eventos geológicos y oceánicos pasados.
- La historia tectónica del Cenozoico y los patrones de circulación oceánica son factores clave en la biogeografía contemporánea de los invertebrados de aguas profundas.
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