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Ecología austral

On-line version ISSN 1667-782X

Abstract

CIANCIO, Javier  and  PASCUAL, Miguel. Energy density of freshwater Patagonian organisms. Ecol. austral [online]. 2006, vol.16, n.1, pp.91-94. ISSN 1667-782X.

We assessed by using a bomb calorimeter the energy density of the main species of Patagonian freshwater ecosystems, including fish, crustaceans, gastropods, oligochaetes, and insects. Fish (5048-5789 Cal/g) were the most energy density group, followed by insects (5062- 5232), crustaceans (3364-3994), oligochaetes (3471) and gastropods (1143). These data consist on the first direct energy density estimations of freshwater species and are intended as a baseline information for modelling the energy fluxes in Patagonian freshwater ecosystems.

Keywords : Bomb calorimeter; Bioenergetic model.

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