Principles of assessment of a water reservoir eutrophication degree as the description of a trophic state in relation to the ecological reservoir state

摘要

the declaration includes the evaluation of eutrophication and its link with the ecological potential environmental and biological stability. introduced the stages of eutrophication, which reflect the ecological condition, the ecological potential and biological stability of the aquatic environment.introduced the division allows linkage changes caused by eutrophication of the status and potential ecological and biological stability, and combines these three groups of indicators in a uniform and logical structure. this way leads to the determination of the stage of eutrophication and its reference to status and ecological potential reservoir.in addition, he is an important and crucial to not scale. the model provides the basis for the development of the concept of absolute individual for each sub basin and other water bodies (e.g. oder, vistula river, etc.).in determining the level of eutrophication are taken into account the following parameters: the number of biogenu00f3w and dynamic changes, the content of oxygen and carbon dioxide, but in the vertical layout, with emphasis on the bottom layers, level of hydrogen sulfide and ammonia - basic compounds chem icznych arising from the processes of decay, the proportion of aerobic and anaerobicespecially in the seabed sediment volume and dynamics of their formation, blooming and rate of water, algal biomass, changes the qualitative and quantitative composition of aquatic plants, ichtiofauny and zoo - and phytoplankton, consideration when measuring impact so the factors as temperature, hours of sunshine and proximity to potential sources miogenu00f3w,morphological characteristics of reservoir, such as: surface area, depth, flow rate of water, sunshine mirror water, degree of mixing water in spring and autumn, type of substrate forming the bottom tank and reservoir environment and its catchment. these measurements shall be carried out in different seasons, for a minimum of one year.account should be taken of the weather conditions during these measurements. after determining the abovementioned parameters are assigned to one of the advanced processes of eutrophication levels: initial phase eutrofii / final phase mezotrofii, the eutrophication status awarded y moderate eutrophication, strong - weak ecological status, end-stage - bad ecological status.