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Modifying the Bank Erosion Hazard Index (BEHI) Protocol for Rapid Assessment of Streambank Erosion in Northeastern Ohio
Published on: February 13, 2015
La modificación de un estuario
Resumen
Las actividades humanas han alterado significativamente el estuario de la Bahía de San Francisco, impactando los hábitats y la calidad del agua. Los cambios futuros amenazan el ecosistema debido a la eliminación de residuos y la reducción de la entrada de agua dulce.
Área de la Ciencia:
- Ciencias ambientales Ciencias ambientales.
- Ecología Ecología Ecología.
- Estudios de estuario Estudios de estuario
Sus antecedentes:
- El estuario de la bahía de San Francisco ha sufrido extensas modificaciones inducidas por el hombre.
- La pérdida de humedales, las especies invasoras, la reducción de la afluencia de agua dulce y la contaminación de los desechos han alterado la dinámica ecológica.
Objetivo del estudio:
- Para resumir los principales impactos humanos en el estuario de la bahía de San Francisco.
- Para resaltar las amenazas actuales y potenciales futuras para el ecosistema del estuario.
Principales métodos:
- Revisión de las actividades humanas históricas y en curso que afectan al estuario.
- Análisis de las consecuencias ecológicas de la alteración del hábitat, la introducción de especies y la contaminación.
Principales resultados:
- Los diques y el relleno han eliminado hábitats críticos para los peces y las aves acuáticas.
- Las especies invasoras han remodelado las comunidades acuáticas, mientras que la reducción de la afluencia de agua dulce afecta a todos los niveles tróficos.
- La contaminación de los sedimentos y los organismos por los residuos plantea un riesgo significativo.
Conclusiones:
- La eliminación continua de desechos tóxicos y la reducción de la entrada de agua dulce plantean riesgos sustanciales para la calidad del agua y las comunidades bióticas.
- El ecosistema del estuario sigue siendo vulnerable a una mayor degradación por los efectos sinérgicos de la contaminación y la hidrología alterada.
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