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Arid Ecosystems

, Volume 8, Issue 4, pp 231–244 | Cite as

Effects of River Control and Climate Changes on the Dynamics of the Terrestrial Ecosystems of the Lower Volga Region

  • Zh. V. KuzminaEmail author
  • S. E. TreshkinEmail author
  • S. S. ShinkarenkoEmail author
SYSTEMATIC STUDY OF ARID TERRITORIES
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Abstract

We continued the complex ecological studies in the Lower Volga Region that we started in 2014 in order to investigate the current state of floodplain terrestrial ecosystems and to describe the tendencies in the transformation of the natural environment and the responses of terrestrial ecosystems to changing climate conditions and the influence of anthropogenic factors. The study was conducted with the original two-step method for the estimation of disorders in terrestrial ecosystems after changes in the water content of studied areas. The first step included the determination of possible changes in the water content based on an analysis of long-term annual changes in climatic and hydrological data. The second step included the estimation of disorders in the ecosystems and landscapes based on various biological parameters. We determined the main factors of changes in the abiotic (hydrological and climatic) components of ecosystems in the Lower Volga Region influencing the transformation of landscapes. We described the main causes of changes in a separate component of terrestrial ecosystems related to the increased water flow rate of the winter low-water period and winter runoff, which contribute to a higher level of gleying throughout the entire soil profile and to the degradation of floodplain ecosystems (along with climatic changes).

Keywords:

winter low-water groundwater level soil gleying floodplain ecosystems vegetation dynamics ecosystem disorders 

Notes

ACKNOWLEDGMENTS

The study was supported by the Institute of Water Problems, Russian Academy of Sciences, “Modeling and prediction of the processes of restoration of the water and ecosystem quality in different scenarios of changes in climate and anthropogenic activity,” project no. 0147-2018-0002, registration no. AAAA-A18-118022090104-8 in 2018–2019, and it was supported by the government, registration no. AAAA-A16-116122010038-9.

We thank K.N. Kulik, V.P. Zvolinsky, V.V. Meli-khov, M.Yu. Puchkov, and G.A. Rulev for their help with the field studies in the Lower Volga basin.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Institute of Water Problems, Russian Academy of SciencesMoscowRussia
  2. 2.Federal Agency for Scientific OrganizationsMoscowRussia
  3. 3.Federal Scientific Center of Agroecology, Complex Melioration and Protective Afforestation, Russian Academy of SciencesVolgogradRussia

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