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Volume 46 - Number 1 - 2011

Scientific note

 


Ecotoxicological quality of sediments in fiords of southern Chile

Anny Rudolph1, Paulina Medina1, Ramón Ahumada1 y Vanessa Novoa1


1Departamento de Química Ambiental, Facultad de Ciencias, Universidad Católica de la Santísima Concepción, Casilla 297, Concepción, Chile

 

E-mail: annyr@ucsc.cl

 

We analysed the ecotoxicological quality of sediments in Moraleda, Puyuguapi and Elefantes Channels and Aysén Fjord, located between 44º and 46.5ºS, using non-specific tests in order to evaluate their base conditions in terms of possible pollutants that may have been introduced in the area. The survival tests with Ampelisca araucana and Tisbe longicornis and fertility test with Arbacia spatuligera indicate that the sediments do not present problems of toxicity. Nevertheless, the increased cellular density observed in the tests with microalgae (Dunaliella tertiolecta, Dunaliella salina and Isochrysis galbana) indicates the accumulation of sediments rich in nutrients within the area.

 

Key words: Arbacia spatuligera, Ampelisca araucana, Tisbe longicornis, microalgae

 

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