Water-related ecosystem services in Western Siberian lowland basinsAnalysing and mapping spatial and seasonal effects on regulating services based on ecohydrological modelling resultsCONTENTSPART ONEPART TWOPART THREEPART FOURPART FIVEIntroductionMaterial and MethodsResultsDiscussionConclusions PART ONEIntroduction Recently,ecosystems or human-environmental-systems in general,are more and more studied within the light of the ecosystem services(ESS)concept,which is intended to act as a suitable a