... Tables of Contents / Povolzhskiy Journal of Ecology: 2007, Issue 4 . Yevdokimov N.A., Yermokhin M.V. Seasonal dynamics of population density and biomass of Hemidiaptomus hungaricus Kiefer, 1933 (Copepoda, Calanoida) in temporary reservoirs in the Saratov region . ... Expansion dynamics and modern abundance of Melanocorypha calandra and Melanocorypha leucoptera in the Northern Lower-Volga region . ... Tsvetkova A.A. Abundance dynamics of mouse-like rodents in the steppe Saratov Cis-Volga region . ...