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Food Limitation of Planktonic Rotifers: Field Experiments in Two Mountain Ponds by Susan E. Cordova; Joy Giffin; Kevin L. Kirk is a Environmental Science article available to read on EtoBox.

What is Food Limitation of Planktonic Rotifers: Field Experiments in Two Mountain Ponds about?

1. Resource competition is thought to be important in controlling zooplankton population dynamics and structuring zooplankton communities. Resource competition requires that resources are limiting. Ten field experiments were conducted to determine the presence and intensity of resource limitation of herbivorous planktonic rotifers in two mountain ponds. The intensity of food limitation was measured as Δ__r__, the difference between population growth rates in food supplemented versus control enclosures. 2. Rotifers were significantly food limited (Δ__r__ > 0) in most experiments. The intensity of food limitation varied between species. In Grady Lake, mean Δ__r__ was 0.26 day^−1^ for __Polyarthra vulgaris__ and 0.43 day^−1^ for an unidentified __Synchaeta__ sp. In L1 Pond, mean Δ__r__ was 0.07 day^−1^ for __Keratella cochlearis__ and 0.28 day^−1^ for __S. oblonga__. The frequent and intense food limitation suggests that edible phytoplankton in both ponds were often present at low densities, were of low nutritional quality, or both. The intensity of food limitation often changed rapidly over time, indicating rapid temporal variation in resource availability. 3. For __P. vulgaris__, Δ_

Who reads Food Limitation of Planktonic Rotifers: Field Experiments in Two Mountain Ponds?

Author

Susan E. Cordova; Joy Giffin; Kevin L. Kirk

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0046-5070)

Published

2001

Language

EN

Field

Environmental Science (Physical Sciences)