TY JOUR TI ABOUT THE EXPANSION OF HERRING GULL IN THE SOUTH OF CENTRAL SIBERIA KW Krasnoyarsk region KW Khakassia KW Tuva KW biodiversity conservation KW birds KW herring gull KW limiting factors KW wetlands KW viral infections KW influenza A virus KW the expansion of species JO Bulletin of KSAU AU Savchenko, P.A. AU Kucherenko, A.V. AU Karpova, N.V. PY 2016 IS PB Krasnoyarsk State Agrarian University