publication . Article . 2012

resources supporting the food web of a naturally productive lake

Jonathan Cole;
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  • Published: 21 Aug 2012 Journal: Limnology and Oceanography, volume 57, pages 1,443-1,452 (issn: 0024-3590, Copyright policy)
  • Publisher: Wiley
Abstract
A Bayesian mixing model and stable isotopes of carbon, nitrogen, and hydrogen were used to evaluate the extent to which six consumers (three fishes, two zooplankton, and a snail) in a naturally productive lake used terrestrial resources, epilimnetic and metalimnetic phytoplankton, benthic algae, and macrophytes. Resource use varied with consumer habitat use and feeding ability, but allochthony was consistently low (averaging 15% among consumers). The pelagic invertebrates Skistodiaptomus oregonensis and Chaoborus spp. relied on phytoplankton from the epilimnion (59% and 49%, respectively) and to a lesser extent from the metalimnion (28% and 26%, respectively); t...
Subjects
free text keywords: Aquatic Science, Oceanography, Littoral zone, Food web, Habitat, Zooplankton, Phytoplankton, Ecology, Ecosystem, Macrophyte, Pelagic zone, Biology, Fishery
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