ISSN:
1432-1939
Keywords:
Drosera
;
Competition
;
Food niches
;
Carnivorous plants
;
Niche segregation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary In 1984 a quantitative field study was made on two sympatric species of sundew, Drosera rotundifolia and Drosera intermedia, growing in a small silting-up bog in southern Germany. Both species differ in individual size and abundance but have nearly the same total biomass. Their association along a transect was strongly negative and also the vertical distribution was quite different. D. rotundifolia grows in significantly higher parts of the bog than D. intermedia. The composition of arthropod prey fauna proved to be markedly different in both species. For instance, Collembola were found more frequently on D. rotundifolia, winged insects on D. intermedia. The reasons for these differences are probably different microhabitats and different shapes of the plants. Seasonal dynamics of the arthropod populations affect their share in the composition of prey.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00379912
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