Ecology and biology Trapa natans L. in condition of East Transbaikalia

Trapa natans L. is a rare relict plant noted down the Red Book of Chita oblast and Aga-Buryat autonomous okrug. Ecological and biological peculiarities (phenological growth, population number, seed productivity) depend on temperature conditions of the vegetation period. Hydrological and hydrochemical reservoir regimes are of great importance during T. natans settling.