@misc{Zdanowski_Bogusław_Ecological_1983-1984, author={Zdanowski, Bogusław}, editor={Polska Akademia Nauk. Instytut Ekologii}, copyright={Creative Commons Attribution BY 3.0 PL license}, address={Warszawa}, howpublished={online}, year={1983-1984}, language={eng}, abstract={Chlorophyll content and visibility of Secchi's disc in spring and summer have been described for 46 lakes differing in their trophic state and mixia (dimictic and polymictic lakes). Chlorophyll content increased and visibility decreased along with increasing lake trophic state. For spring and summer the following relationships have been demonstrated: significant positive correlation between content of total phosphorus and chlorophyll, negative correlation between chlorophyll content and visibility, and lees significant positive correlation between content of total nitrogen and chlorophyll in summer. No relationship was found between concentration of silicates and chlorophyll.}, type={Text}, title={Ecological characteristics of lakes in north-eastern Poland versus their trophic gradient. 5, Chlorophyll content and visibility of Secchi's disc in 46 lakes}, URL={http://rcin.org.pl/Content/79272/PDF/WA058_87172_P2840-T31_Eko-Pol-A-Nr-2.pdf}, volume={31}, number={2}, journal={Ekologia Polska}, publisher={Polish Scientific Publishers}, keywords={lakes, trophic state, dimictic lakes, polymictic lakes, chlorophyll content, visibility of Secchi's disc, content of phosphorus, nitrogen and silicates}, }