Titlebook: Intermediate Disturbance Hypothesis in Phytoplankton Ecology; Proceedings of the 8 J. Padisák,C. S. Reynolds,U. Sommer Conference proceedin

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Glucocorticoids

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Importance of intermediate disturbances for the species composition and diversity of phytoplankton seeking preferred depths usually dominated during summer stratification: . during the hypertrophic phase, and flagellates since restoration. In contrast, in Lake Tegel deeper mixing as a generally prevailing condition favored non-motile species. Their seasonal pattern was remarkably constant from y

Fecal-Impaction

Seasonal succession of phytoplankton and its diversity in two highly eutrophic lakes with differenting of bottom layers and predominance of blue-greens, phytoplankton biomass was higher and diversity lower than in the cold summer of 1982..In stratified Lake Rudusku, phytoplankton diversity and number of species were usually much lower. During the long summer stratification up to three-four domina

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Seasonal fluctuations in the diversity and compositional stability of phytoplankton communities in events, with small algae and with high grazing. Low diversity or decrease in diversity occur in compositionally stable periods, when conditions select few species, as large forms dominate and as grazing by zooplankton takes effect. Gradual seasonal changes are observed in structurally stable lakes.