The Variability of Lake Water Chemistry in the Bory Tucholskie National Park (Northern Poland)

摘要: The paper presents the results of chemical analysis lake waters in Bory Tucholskie National Park (BTNP). BTNP area is unique due to its location within a single catchment and high variability geological structure. Moreover, lakes have different morphometric parameters, represent hydrological types, trophic types thermal regimes. Another feature existence five lobelia lakes. This name comes from Latin taxon – Lobelia dortmanna L. which has been included Polish Red Data Book Plants. 55 macro elements (MEs), trace (TEs) rare earth (REEs). Low concentrations MEs, TEs REEs confirm absence anthropogenic pressure. High variation ME, TE REE contents between individual cluster enabled be divided into six groups taking account all analyzed water quality parameters. were characterized by lowest MEs REEs, mainly result small their endorheic character. highest occurred lakes, where structure was dominant. connected Struga Siedmiu Jezior stream. relation environmental factors trophic, hydrologic typology allowed better understanding spatial distribution obtained indicate that values studied generally close average noted surface according Geochemical Atlas Europe.