title: [Ecological factors of hydrolytic enzyme activities in the Ob-Yenisey estuarine coastal waters in winter and their modelling].
abstract: The ice conditions at the Ob-Yenisey estuarine coastal waters with relatively diffuse ice cover have been described using the data obtained in the Kara Sea survey aboard the nuclear icebreaker Yamal in January 22-March 6, 2003. The data on the capacity and rate of enzymatic degradation of various forms of organic matter and on the associated ecological factors in the region of active sea water/continental water interaction are given. We analyzed spatial distribution of the main types of water bodies as well as the cascade structure formed by some biogeochemical barriers near the Ob-Yenisey flaw polynya. We also analyzed the correlations between the indices of extracellular biochemical activity in water and the main abiotic and biotic factors during the organotrophic phase. The processes determining the level of biochemical activity in winter water and the rates of potential degradation of various organic compounds are considered.
authors.forename: S I
authors.initials: SI
authors.lastname: Bardan
authors.forename: G A
authors.initials: GA
authors.lastname: Korneeva
mesh_terms: D003081:Cold Climate; D017753:Ecosystem; D046448:Ice Cover / Q000382:microbiology*; D008954:Models, Biological; D009792:Oceans and Seas; D045483:Rivers / Q000382:microbiology*; D012621:Seasons; D012623:Seawater / Q000382:microbiology*; D014871:Water Microbiology