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Assessing Intertidal Populations of the Invasive European Green Crab
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Ruleta ecológica: el transporte global de organismos marinos no autóctonos
Science (New York, N.Y.)
|July 2, 1993
Resumen
El agua de lastre de los barcos transporta numerosas especies marinas a través de los océanos. Este transporte global amenaza los ecosistemas costeros al introducir diversos conjuntos de plancton en nuevos entornos.
Área de la Ciencia:
- Biología Marina Biología Marina.
- Ecología Ecología Ecología.
- Investigación de las especies invasoras.
Sus antecedentes:
- Los buques oceánicos utilizan el agua de lastre para su estabilidad, intercambiando agua de mar en diferentes puertos.
- La descarga de agua de lastre es una vía conocida para la introducción de organismos marinos no nativos en nuevos ecosistemas.
Objetivo del estudio:
- Para investigar la diversidad y composición de los taxones planctónicos transportados en el agua de lastre de los buques.
- Evaluar los riesgos ecológicos potenciales asociados con las introducciones de agua de lastre.
Principales métodos:
- Recopilación y análisis de muestras de plancton de las aguas de lastre vertidas por los buques.
- Identificación taxonómica de los organismos marinos recogidos.
Principales resultados:
- Las muestras de agua de lastre de los buques japoneses liberados en Oregon contenían 367 taxones planctónicos distintos.
- La mayoría de los taxones marinos con una etapa de vida planctónica y todos los principales hábitats marinos y grupos tróficos estaban representados.
- La presencia de taxones discretos o taxonómicamente difíciles sugiere invasiones generalizadas de agua de lastre.
Conclusiones:
- El agua de lastre facilita el transporte de conjuntos enteros de plancton costero a través de las barreras oceánicas.
- Este transporte representa una amenaza significativa para los ecosistemas costeros receptores, incluidas las bahías, estuarios y aguas interiores.
- Las introducciones de agua de lastre son un problema generalizado, que puede conducir a una interrupción ecológica generalizada.
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