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Published on: August 3, 2016
Anoxia de la bahía de Chesapeake: origen, desarrollo e importancia
Resumen
La anoxia anual en la bahía de Chesapeake afecta a 5 mil millones de metros cúbicos de agua, lo que tiene un impacto en la vida marina. Esto ocurre debido a la estratificación y la descomposición orgánica, dañando especies económicamente importantes.
Área de la Ciencia:
- Biología marina Biología marina.
- Oceanografía La oceanografía es la oceanografía.
- Ciencias ambientales Ciencias ambientales.
Sus antecedentes:
- La anoxia, o bajos niveles de oxígeno, es un problema recurrente en las aguas más profundas de la Bahía de Chesapeake.
- La zona anóxica se extiende desde Baltimore hasta el estuario del río Potomac anualmente.
- Este fenómeno afecta a un volumen significativo de agua, aproximadamente 5 mil millones de metros cúbicos.
Objetivo del estudio:
- Describir el alcance y las causas de la anoxia anual en la bahía de Chesapeake.
- Para resaltar las consecuencias ecológicas de esta condición hipóxica.
Principales métodos:
- El estudio describe la extensión espacial y temporal de la anoxia.
- Identifica los principales factores contribuyentes, como la estratificación de la columna de agua y la descomposición de la materia orgánica.
Principales resultados:
- La anoxia ocurre de mayo a septiembre, impulsada por la estratificación primaveral y la reducción de la reoxigenación.
- La descomposición bentónica de los detritos orgánicos acumulados de las floraciones previas de plancton exacerba la condición.
- La zona anóxica abarca una gran área del centro de la bahía de Chesapeake.
Conclusiones:
- La anoxia de la bahía de Chesapeake es un importante factor de estrés ambiental.
- La condición tiene notables efectos ecológicos en las especies marinas, incluidas las de valor económico.
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