THE CHAROPHYTES (CHARALES, CHAROPHYCEAE) FROM THE MIDDLE VOLGA REGION (RUSSIA): SYNOPSIS OF LOCALITIES AND SPECIES PROTECTION Journal title: Nature Conservation Research. Заповедная наука Authors: Roman E. Romanov, Elena V. Chemeris, Liubov V. Zhakova, Anastasia V. Ivanova, Olga V. Palagushkina Subject(s):