@misc{Traczyk_Henryka_Tentative_1967,
 author={Traczyk, Henryka and Traczyk, Tadeusz},
 editor={Polska Akademia Nauk. Komitet Ekologiczny},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 howpublished={online},
 year={1967},
 language={eng},
 abstract={The paper presents a preliminary attempt of the production estimation (simplified Ovington's (1962) method adjusted for IBP) for herb layer in four forest communities. The size of production of nanophanerophytes and hemicryptophytes was calculated from the difference of standing crops at the period of their full development (summer) and their initial standing crop at spring. The maximal standing crop of early spring geophytes during the period of fructification was accepted as their production. The estimate of herb layer production was referred to the plant cover found in samples. To production estimate there was introduced a correction which employed an index of average cover, obtained in special samples taken randomly from the whole phytocoenosis of communities studied. The great importance of the way of the selection of sampling places upon the final results has been stressed.},
 type={Text},
 title={Tentative estimation of the production of herb layer},
 URL={http://www.rcin.org.pl/Content/70375/PDF/WA058_86209_P2840-T15_Eko-Pol-A-Nr-46.pdf},
 volume={15},
 number={46},
 journal={Ekologia Polska. Seria A},
 publisher={Państwowe Wydawnictwo Naukowe},
 keywords={forest plants, Poland, Kampinos Forest},
}