engleski

Copepod communities in karstic mediterranean lakes along the easteren Adriatic coast.

The copepod communities of karstic lakes along the eastern Adriatic coast were studied. Lakes were divided in aeveral groups according to their morphology (deep, shallow, barrage and rescrvoirs), production (oligotrophic, mesotophic and eutrophic), and salinity of water: freshwater and brackish. Copidodioptorrtu.s steueri, Euc.vclops serrulotu.s and Macroc_vclop.s albidu.s belong to the group that inhabited most of the lakes under the study, regardless of lake type. The shallow karstic lakes are usually inhabited by Tl~ermoc.vclops dybowskii, T. oithonoides, Cvclops vicimt.s and Eudinptnmus padarws etru.scus in freshwater biotopes, and Cnlanipedicr ayuaedulci.s and Copidodiaptontu.s .steueri in brackish biotopes. The last two species can also be found in deep karstic lakes with brackish water (Bacina lakes in the Neretva River delta). Species like Cvclops abyssorum can be found in most deep freshwater lakes. Some Calanoida were recorded in only one lake, like Eudiaptomus transsvlvanicu.s in the deep Lake Vrana on the island of Cres, or Eudiaptomu.s had~ici in the barrage Lake Visovac. Production of the lakes, expressed as copepod biomass, depends on lake trophy, and in some lakes also on hydrology and salinity. Most of the mesoeutrophic lakes in the study area had Calanoida dominating, while Cyclopoida dominated in some oligotrophic and eutrophic lakes as well.

Copepoda; karstic Mediteranean lakes; eastern adriatic coast

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