July 2016
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This paper represents the results of a comprehen� sive study on the consistent patterns of the functioning (dynamics) of the shrub and northern tundra ecosys� tems of the Yamal Peninsula that have been subjected to long�term anthropogenic impact connected with the traditional reindeer breeding and are now sub� jected to some new influences connected with the development of the oil and gas industry. The study is based on the integration of data accumulated during several decades of investigation of Yamal ecosystems in which we have participated.