ISSN:
1573-5117
Keywords:
Vertical migration
;
Daphnia
;
shallow rock-pools
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract We report diurnal changes in vertical distribution of Daphnia longispina and D. magna in shallow (25–60 cm) rock-pools on Baltic islands, southern Finland. During the daytime shallow rock-pool Daphnia reside in water layers close to the sediment while at midnight they either are evenly distributed throughout the water column, or have a modal peak of distribution in the surface water. Contrary to this pattern, no changes were observed in vertical distribution of D. longispina at noon and at midnight in a 150 cm deep pond. We suggest that the pattern of Daphina vertical migration in shallow rock-pools is not satisfactorily explained by predation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00000007
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