Original paper

Population dynamics of duckweed cover in polder ditches

De Groot, W. T.; De Jong, F. M. W.; Van Den Berg, M. M. H. E.

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Archiv für Hydrobiologie Volume 109 Number 4 (1987), p. 601 - 618

16 references

published: Jul 6, 1987

DOI: 10.1127/archiv-hydrobiol/109/1987/601

BibTeX file

ArtNo. ESP141010904007, Price: 29.00 €

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Abstract

Excessive duckweeds growth nowadays threatens the species diversity of Dutch polder ditches. In a field research it has been investigated to which extent duckweed growth may be ascribed to eutrophication, i. e., the agricultural nutrient input on the land parcels adjacent to the ditches. The study shows that clear relations exist between the nitrogen input and the phosphate concentrations at the one hand with duckweed growth and duckweed cover at the other. The correlation coefficients of these relations range between r = 0.71 and r = 0.92.

Keywords

polder ditches • nitrogen • phosphate