Drought and deluge: Influence of environmental factors on water quality of kettle holes in two subsequent years with different precipitation

摘要: Abstract Thirty kettle hole ponds located in agricultural landscape of western Poland were studied with respect to physico-chemical (temperature and pH) chemical (SC, dissolved oxygen, concentration nutrients) variables surface water quality during two subsequent years. Most the selected for study host populations endangered large branchiopod crustaceans, thus aim was find out rules governing these ecosystems infer best ways protect them. Precipitation first year close average region, whereas severe drought recorded second year. The influence regime, morphological parameters, catchment characteristics vegetation on parameters (pH, conductivity, contents O 2 , N-NH 4 N-NO 3 SRP TP) separately both years tested using redundancy analyses (RDA). results showed that factors significantly explaining variance chemistry differed between study. In precipitation, most important related morphology pond its catchment. contrast, under conditions connected depth significant. However, general, hydroperiod length factor, significant all models created.