Seasonal patterns of food limitation in Daphnia galeata: separating food quantity and food quality effects

Müller-Navarra, Dörthe
Lampert, Winfried

Publication date

January 1996

Abstract

Food limitation for the cladoceran Daphnia galeata was measured growing them with natural lake seston for one growing season under standardized conditions in the laboratory. Growth rates were related to several measures of food quantity. Particulate organic carbon (POC) <30 mu m was the best predictor of total food availability measured. It was better than chlorophyll-a (Chi-a) of the same size fraction, algal volume calculated from cell counts or total particle volume from Coulter Counter measurements. Daphnids were also grown with Scenedesmus acutus under the same conditions and their growth rates were compared. Sestonic carbon concentrations were related to Scenedesmus carbon concentrations, that provided equal growth rates. The ratio of...

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Seasonal patterns of food limitation in Daphnia galeata: separating food quantity and food quality effects

Abstract

Extracted data

Seasonal patterns of food limitation in Daphnia galeata: separating food quantity and food quality effects

Abstract

Extracted data

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