Resilience of small alpine Armenian lakes to climate change
Assigned Session: FS 3.122: The status and future of mountain waters
Abstract ID: 3.13564 | Accepted as Poster | Requested as: Talk | TBA | TBA
Irina Fedorova (1)
Elizaveta, Chezhina (2); Gulnara, Nigamatzyanova (3, 4); Ivan, Gabrielyan (1); Narune, Hayrapetyan (1); Lusine, Hambaryan (5, 6); Grigory, Fedorov (1)
(1) Institute of Botany after A.Takhtajyan National Academia of Sciences of the Republic of Armenia, 01, Acharyan, 0063 Yerevan, AM
(2) St. Petersburg State Univereisty, 7-9, Universitetskaya nab., 199034, St. Petersburg, Russian Federation
(3) Institute of Archaeology and Ethnography Siberian Branch of the Russian Academy of Sciences, 17, Acad. Lavrentiev Avenue, 630090, Novosibirsk, Russian Federation
(4) Kazan Federal University, 18, Kremlyovskaya street, 420008, Kazan, Russian Federation
(5) Yerevan State University, 01, Aleka Manukyana str., 0025, Yerevan, Republic of Armenia
(6) Institute of Hydroecology and Ichthyology of SCZHE NAS RA, 7, Paruyr Sevak str., 0014, Yerevan, Republic of Armenia
Abstract
Rapid melting of Caucasian glaciers and snowfields has changed lake catchments and lacustrine ecosystems on Armenian highland. Several small glaciers on Virahayots, Gugarats, and Zangezur ridges were main water sources for mountain rivers and lakes in the middle of last century. Currently there are no glaciers in Armenia and there is a prominent decline of precipitation in the region due to climatic warming. Nevertheless, due to severe conditions in highlands, quite short hydrological summer, and lacustrine ecosystems buffer capacity the lakes still show their resilience to climate change. On the one hand, morphometric parameters has not dramatically changed, planktonic species have not varied and modified much, hydrochemical parameters and sediment geochemistry can be easily compared with former studies. On the other hand, water catchments of lakes have lost water source because of the snowpatches melting, vegetation have being changed slowly due to groundwater storage decrease and evapotranspiration rise; a
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