1950
De verspreiding van de Mollusken in de duinplasjes tussen Den Helder en Schoorl
Publication
Publication
Basteria , Volume 14 - Issue 3/4 p. 53- 59
During 1948 an investigation of the mollusk-fauna of certain pools and minecraters in the dunes between Den Helder and Schoorl (Prov. of North-Holland, Netherlands) took place. The succession of the snail-population, so different in the old dune pools compared with the minecraters of more recent origin, was studied. The vegetation, pH degree and transparency of the milieu were considered. In a table the distribution of the various mollusks in the different localities is checked. The author distinghuishes between two biocoenoses: 1. the Lymnaea ovata-coenosis in young pools, with turbid water, scanty vegetation and poor in mollusks, and 2. the Lymnaea stagnalis-coenosis in older pools, with clear water, luxuriant vegetation and much richer in mollusks. Finally the settling possibilities and the competition of the species in the different pools are discussed.
Additional Metadata | |
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Basteria | |
CC BY-NC 4.0 NL ("Naamsvermelding-NietCommercieel") | |
Organisation | Nederlandse Malacologische Vereniging |
C. den Hartog. (1950). De verspreiding van de Mollusken in de duinplasjes tussen Den Helder en Schoorl. Basteria, 14(3/4), 53–59. |