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Subject and Keywords:
A comparison of the primary production (14c), its PHAR efficiency, daily P : B ratio, and the composition, biomass and dynamics of the phytoplankton, zooplankton and bacterioplankton, of the littoral and profundal benthos, as well as of the emergent and submerged vegetation of five lakes connected by the Jorka river indicates a consistent pattern of mesotrophic status in L. Majcz Wielki (deep, dimictic), of eutrophic status in L. Inulec and L. Jorzec (shallow, with a high internal and external loading), and of „mixotrophic” status in Głębokie L. (deep, dimictic) – originally mesotrophic, but at present enriched and polluted by an aquaculture (Salmo gairdneri Richardson).
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Projects co-financed by:
Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.