Ecological Systems and Devices Index of articles published in the journal "Ecological Systems and Devices" in number 12 of 2021. << Back MATHEMATICAL MODELING ENVIRONMENTAL SYSTEMS AND PROCESSES M.V. Kokoulina, O.E. Kurkina, A.A. Kurkin FEATURES OF EXOGENOUS CHARACTERISTICS OF INTERNAL WAVES IN THE OKHOTSK SEAON THE BASES OF HYDROLOGICAL ATLAS WOA18 More » ECOLOGICAL MONITORING V.G. Shatko, Yu.N. Gorbunov, V.A. Kryuchkova ECOLOGICAL FEATURES AND MONITORING OF THE POPULATION STATUS OF OPHRYS OESTRIFERA M. BIEB. (ORCHIDACEAE) IN THE SOUTH-EASTERN CRIMEA More » POLLUTION CONTROL, ANALYSIS AND CONSERVATION ENVIRONMENTAL SYSTEMS N.N. Roeva, S.S. Voronich, D.A. Zaytsev, B.A. Zachernyuk, E.N. Solovyova, I.A. Zaytseva DETERMINATION OF AMMONIA IN ATMOSPHERIC AIR BY SPECTRO-PHOTOMETRIC METHOD More » ECOLOGY OF THE OCEANS AND SEAS N.A. Kazakov MECHANISM AND CONDITIONS OF FORMATION OF ANTHROPOGENIC LANDSLIDES ON SAKHALIN ISLAND More » GEOECOLOGY Yu.P. Galchenko, E.D. Yakusheva FEATURES OF HYDROSPHERE DISTURBANCE IN THE DEVELOPMENT OF DEEP-LYING ORE DEPOSITS More »