Seasonal variations in phytoplankton size structure in Lake Cromwell (Laurentian Shield), Quebec |
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Authors: | I. T. Jordan P. E. Ross B. Pinel-Alloul |
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Affiliation: | (1) Département de Sciences biologiques, Université de Montréal, H3C 3J7 Montréal, Québec, Canada;(2) Illinois Natural History Survey, 607 East Peabody Drive, 61820 Champaign, IL, USA |
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Abstract: | Seasonal variation in phytoplankton size classes was studied over the period of a year in a small, mesotrophic, brown-water lake. Throughout the sampling period, species from 2–16 μm (GALD) dominated the phytoplankten community. Small phytoplankters (2–8 μm) were predominant in winter and early spring populations while algae of 8–16 μm became important in summer (phytoplankton < 2 μm was not counted). Principal coordinate analysis resulted in a cyclic pattern of dates in the reduced space, winter and early spring samples being well separated from the other dates. In multiple linear regressions between environmental parameters and size classes, temperature was always the most important variable. |
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Keywords: | phytoplankton size structure seasonal variation multivariate analysis |
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