@misc{Woroniecka-de_Wachter_Urszula_Biotic_1983-1984,
 author={Woroniecka-de Wachter, Urszula},
 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={In mesotrophic Lake Majcz Wielki the photosynthetic production (14c), between April and October1977, was 65 g Cass · m-2, the maximal daily one was 500 mg Cass · m-2 photosynthesis efficiency (in relation to PHAR) up to 0.31%, and the daily P : B coefficient up to 2.2. In remaining lakes, of a more advanced trophic state, these values were between 213 (Lake Jorzec) and 108 g Cass · m-2 (Lake Zełwążek), and between 4491 and 1400 mg Cass · m-2 day-1, whereas the photosynthesis efficiency frequently exceeded 1%. Seasonal changes of photosynthesis, its efficiency and the P : B ratio among others, depending on phosphorus concentration and the N : P ratios, were analysed.},
 type={Text},
 title={Biotic structure and processes in the lake system of r. Jorka watershed (Masurian Lakeland, Poland). 3, Production and photosynthesis efficiencies of phytoplankton},
 URL={http://rcin.org.pl/Content/79277/PDF/WA058_87181_P2840-T31_Eko-Pol-A-Nr-3.pdf},
 volume={31},
 number={3},
 journal={Ekologia Polska},
 publisher={Polish Scientific Publishers},
 keywords={lakes, phytoplankton photosynthesis, nutrient ratio, daily P : B coefficient},
}