Contribution
Population dynamics of duckweed cover in polder ditches
De Groot, W. T.; De Jong, F. M. W.; Van Den Berg, M. M. H. E.
Archiv für Hydrobiologie Volume 109 Number 4 (1987), p. 601 - 618
16 références bibliographiques
publié: Jul 6, 1987
DOI: 10.1127/archiv-hydrobiol/109/1987/601
ArtNo. ESP141010904007, Prix: 29.00 €
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.
Mots-clefs
polder ditches • nitrogen • phosphate