engleski

Seasonal variability of nutrient and chlorophyll a concentrations in the Karstic coastal lake Veliko Jezero ( Mljet Island, Adriatic Sea)

Vertical and seasonal distribution of nutrients and chlorophyll a (Chl a) were analyzed in relation to the thermohaline conditions in a coastal karstic lake on the south-eastern Adriatic island of Mljet during 1987 and 1988. The water column through most of the year was thermally or saline stratified. Haline stratification was greatly influenced by the raifall regime and freshwater input through underground springs. Trapped saline water of relatively high salintiy was found in the deeper layers. Most of the nutrients did not exhibit a statistically significant difference between different seasons in the relation to the entire water column. The lowest nutrient concetrations were found in the layer above the pycnocline and the highest in the layer below it. Veliko Jezero is an ecosystem characterized by separate water types in vertical profile during all the seasons.

hydrography; vertical profile; stratification; Adriatic Sea

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