Long-term trends in abundance of cladocerans in the Central Baltic: the influence of hydrography and predation by fish.

Möllmann, Christian, Köster, Friedrich, Kornilovs, G. and Sidrevics, L. (2002) Long-term trends in abundance of cladocerans in the Central Baltic: the influence of hydrography and predation by fish. Marine Biology, 141 . pp. 343-352. DOI 10.1007/s00227-002-0822-9.

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Abstract

Long-term dynamics (1960–1997) of the cladoceran species Bosmina coregoni maritima, Evadne nordmanni and Podon spp. are described for the Gdansk Deep and the Gotland Basin (Central Baltic Sea). By using correlation analyses on seasonal time-series, the influence of temperature and salinity on the abundance of cladoceran species was investigated. A clear affinity to higher temperature was found for B. coregoni maritima in summer as well as for E. nordmanni and Podon spp. in spring. In addition to temperature, association tests with salinity revealed besides species-specific preferences, regional and temporal differences. Contrary to B. coregoni maritima, both other species were positively associated to salinity in summer and autumn in the Gdansk Deep. In the Gotland Basin only E. nordmanni was positively correlated to salinity in autumn. Differences in the response to hydrographic variables are possibly stage specific, i.e. between resting eggs and adults, or due to a different adaptation to the abiotic environment.

Document Type: Article
Keywords: Correlation Analysis, Temporal Difference, Association Test, Abiotic Environment, Cladoceran Species
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1007/s00227-002-0822-9
ISSN: 0025-3162
Date Deposited: 18 Feb 2008 17:25
Last Modified: 07 Jun 2018 09:55
URI: http://oceanrep.geomar.de/id/eprint/7877

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