The hypolimnetic protozoan plankton of a eutrophic lake |
| |
Authors: | Johanna Laybourn-Parry Judith Olver Sian Rees |
| |
Affiliation: | (1) Institute of Environmental and Biological Sciences, Division of Biological Sciences, University of Lancaster, LA1 4YQ Lancaster, UK |
| |
Abstract: | The seasonal distribution of benthic species in the water column above and below the thermocline in a small eutrophic lake is described. During summer stratification populations of Spirostomum spp, Loxodes spp., Plagiopyla and Deltopylum become established in the plankton on or below the oxycline/thermocline. At shallow sites no migration occurred and populations of the migratory species in the benthos were sparse, with the exception of Plagiopyla which occurred in high densities in the sediment. Two distinct planktonic populations are established during stratification: an epilimnetic community of obligate planktonic ciliates and a hypolimnetic community of benthic migrants. |
| |
Keywords: | ciliate protozooplankton oxygen epilimnion hypolimnion benthos migration |
本文献已被 SpringerLink 等数据库收录! |