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Producción primaveral de fitoplancton en el mar de Ross occidental
Science (New York, N.Y.)
|October 14, 1994
Resumen
Se detectó una intensa floración de fitoplancton en el mar de Ross utilizando imágenes de escáner de color de la zona costera (CZCS). Esta floración temprana de la temporada aumentó significativamente las estimaciones de productividad primaria para la región.
Área de la Ciencia:
- Oceanografía La oceanografía es la oceanografía.
- Biología Marina Biología Marina.
- La detección remota con sensores.
Sus antecedentes:
- El mar de Ross es un ecosistema marino antártico crítico.
- Las floraciones de fitoplancton son vitales para la red alimentaria y el ciclo del carbono del Océano Antártico.
- Comprender la dinámica de floración de la temporada temprana es crucial para evaluaciones precisas de la productividad.
Objetivo del estudio:
- Para analizar una intensa floración de fitoplancton en el oeste del Mar de Ross utilizando imágenes satelitales.
- Para calcular la productividad primaria durante el período de floración temprana.
- Reevaluar las estimaciones de producción de carbono de primavera a verano para la región.
Principales métodos:
- Utilized Coastal Zone Color Scanner (CZCS) imágenes satelitales de diciembre de 1978.
- Se ha mapeado la extensión espacial de una gran floración de fitoplancton (>106.000 km2).
- Las tasas de productividad primaria calculadas a partir de las imágenes.
Principales resultados:
- Se observó una intensa floración de fitoplancton dentro de las 2 semanas de la formación de la polinia.
- La productividad primaria de diciembre alcanzó 3,9 g C/m2/día, hasta cuatro veces mayor que las mediciones in situ posteriores.
- La producción estimada de primavera a verano aumentó de tres a cuatro veces los valores anteriores.
Conclusiones:
- Las flores de fitoplancton de la temporada temprana en la polinia del Mar de Ross son un importante contribuyente a la producción primaria regional.
- La teledetección por satélite proporciona datos valiosos para el monitoreo de la productividad del océano antártico.
- Es posible que las estimaciones de productividad anteriores hayan subestimado la importancia de las flores de temporada temprana.
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