Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 525400
Title Over verspreiding en periodiciteit van de zoetwaterwieren in Drentsche heideplassen : bijdrage voor het samenstellen eener Nederlandsche wierenflora
Author(s) Beijerinck, W.
Source University. Promotor(en): A.H. Blaauw. - Amsterdam : [s.n.] - 212
Publication type Dissertation, internally prepared
Publication year 1927
Keyword(s) algen - zoet water - flora - plantengeografie - nederland - binnenwateren - natuurgebieden - drenthe - cum laude - algae - fresh water - phytogeography - netherlands - inland waters - natural areas
Categories Algae / Aquatic Ecology
Abstract The pools were all situated in the diluvium of the Dutch northern province of Drente. From the macroflora 3 main types of pools were distinguished which paralleled 3 clearly distinguishable associations of the algal flora. Several algae may serve as type species. In plankton collected and isolated by centrifuging from open water, Flagellatae usually predominated, Desmidiaceae were few and Bacillariaceae and Cyanophyceae were almost absent. Protococcaceae and Desmidiaceae may temporarily predominate in the plankton of some pools.
The periodic fluctuation of the whole algal vegetation (comprising plankton and benthos) was traced in six places, of which two dried up sometimes in the summer of 1925. The association of algae in a pool fluctuated over the year. Seasonal development was parallel in the different pools for only a few of the species. Heat and light were important factors for the development of the algae. Which of them was decisive in a particular case was difficult to establish. Their influence on reproduction could not be explained.
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