A1 Refereed original research article in a scientific journal

Proportion of copepod biomass declines with decreasing salinity in the Baltic Sea




AuthorsHänninen Jari, Vuorinen Ilppo, Viitasalo Markku, Helminen Ulla, Kuosa Harri

PublisherACADEMIC PRESS LTD

Publication year1998

JournalICES Journal of Marine Science

Journal name in sourceICES JOURNAL OF MARINE SCIENCE

Journal acronymICES J MAR SCI

Volume55

Issue4

First page 767

Last page774

Number of pages8

ISSN1054-3139

DOIhttps://doi.org/10.1006/jmsc.1998.0398(external)


Abstract
The biomass ratio of copepoda/cladocera decreased in the Northern Baltic Archipelago Sea (SW Finland) in concert with a decrease in the seawater salinity during the 1980s. There also was an increase in freshwater run-off from the watershed of the Baltic Proper. Seawater salinity correlated negatively with freshwater run-off with a time lag of several years. The abundance percentages of most dominant zooplankton species correlated significantly with salinity, either positively (large neritic copepods), or negatively (freshwater cladocerans). All data sets together indicate a close connection between the functioning of the pelagic Baltic Sea ecosystem and large-scale weather patterns over the run-off area. (C) 1998 International Council for the Exploration of the Sea.



Last updated on 2024-26-11 at 13:13