Composición y estados de desarrollo de Euphausiacea en el estrecho Bransfield (SIBEX - Fase II)
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Date
1990
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Abstract
Se analiza la distribución, abundancia relativa y composición, tanto especifica como por estados de desarrollo de Euphausiacea en el estrecho Bransfield, durante el verano austral de 1985. Basándose en la abundancia relativa de especies y estadios larvales, se determinó la afinidad ecológica entre las estaciones de muestreo. Se analizan las posibles relaciones que estos componentes tienen con masas, cuerpos de aguas o variables ambientales definidas para dicha área y época. Se destacan las relaciones entre algunas variables ambientales y distintos estados de desarrollo de especies de baja constancia, como Euphausia frígida y E. crystallorophias. Éstas muestran la importancia que tiene el considerar los estadios larvales como unidades estructurales de las comunidades zooplanctónicas, dado el diferente comportamiento de ellos.
The distribution, relative abundance, species and developmental stages composition of Euphausiacea in the Bransfield Strait during austral summer 1985, are analyzed. The ecological affinity between sampling stations was determined, based upon the relative abundances of species and larval stages. The possible relationships between these components and water masses, bodies of water or enviromental variables present in the area, are analyzed. Interesting relationships were established between the developmental stages of species of low constancy like Euphausia frígida and E. crystallorophias, and the environmental variables. This suggests that it is important to consider the larval stages as structural units of zooplanktonic communities, due to their different behavior.
The distribution, relative abundance, species and developmental stages composition of Euphausiacea in the Bransfield Strait during austral summer 1985, are analyzed. The ecological affinity between sampling stations was determined, based upon the relative abundances of species and larval stages. The possible relationships between these components and water masses, bodies of water or enviromental variables present in the area, are analyzed. Interesting relationships were established between the developmental stages of species of low constancy like Euphausia frígida and E. crystallorophias, and the environmental variables. This suggests that it is important to consider the larval stages as structural units of zooplanktonic communities, due to their different behavior.
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Keywords
Euphausiacea, Larvas
Citation
Serie Científica, nº 40, pp. 55-69, 1990