TY JOUR TI Daily dynamics of vertical distribution and amount of sturgeons in riverbed depression in summer-autumn period KW riverbed depression KW sturgeon species KW vertical distribution KW fish density KW diurnal aspect KW size groups KW water column KW depth KW fish behavior JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Aldokhin, A.. AU Chemagin, A.. PY 2019 IS PB Astrakhan State Technical University