Algal Nutrient Limitation and the Nutrition of Aquatic Herbivores

R W Sterner; D O Hessen

doi:10.1146/annurev.es.25.110194.000245

$Organisms differ in the proportions of major elements that they contain, inÂ c luding N and P, which are known to be highly dynamic and potentially limiting to production of aquatic ecosystems. Such contrasting elemental comÂ position between, for example, algae and herbivores, or between different herbivores, generates a suite of ecological predictions and opens up new dynamical possibilities. Here we review studies relating to the nutritional physiology of aquatic herbivores, especially freshwater pelagic species, and we relate element content to secondary production and nutrient recycling . A variety of evidence from many types of studies-physiological modelling, w hole-ecosystem surveys, laboratory growth studies, etc-is assembled into an internally consistent picture of mineral limitation of aquatic herbivores. Herbivores with high nutrient demands (the best example is probably Daphnia and phosphorus) appear frequently to be limited not by the food quantity or energy available to them but by the quantity of mineral elements in their f ood. t After June 1. 1994: Gray Freshwater Biological Institute, University of Minnesota, Box 100, County Roads 15 & 19, Navarre, Minnesota 55392 0066-416219411 120-0001$05.00 STERI\IER & HESSEN INTRODUCTION Production of consumer biomass out of resources is similar to a complex chemical reaction in$

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Algal Nutrient Limitation and the Nutrition of Aquatic Herbivores

Sterner, R W; Hessen, D O

Follow Annual Review of Ecology, Evolution, and Systematics , Volume 25 (1) Annual Reviews – Nov 1, 1994

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Algal Nutrient Limitation and the Nutrition of Aquatic Herbivores

Sterner, R W; Hessen, D O

Follow Annual Review of Ecology, Evolution, and Systematics , Volume 25 (1) Annual Reviews – Nov 1, 1994

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