Ecosystems of Lake Sevan Basin-s Rivers in Armenia

Taking into account the importance of Lake Sevan and Lake Sevan basin-s rivers for Armenian economy, the main goals of our investigations were the documentation of water quality and the biodiversity of invertebrates developed in Lake Sevan basin-s rivers and selected tributaries. Moderately satisfied ecological condition for the biodiversity of Lake Sevan basin-s rivers has been established, and the changes in species- composition of zoobenthos in Lake Sevan were detected. A growing tendency of antibiotic resistance among E. coli isolates in water resources has been shown.

Authors:

• Eugenie A. Kachvoryan
• Astghik Z. Pepoyan
• Maria V. Harutyunova
• Anahit M. Manvelyan

Keywords:

• Biodiversity
• ecosystem
• Lake Sevan
• water-quality
• zoobenthos.

References:

[1] P. T.Biyela, J. Lin, C. C Bezuidenhout, "The role of aquatic ecosystems
as reservoirs of antibiotic resistant bacteria and antibiotic resistance
genes", Water Sci Technol, vol. 50, 2004, pp. 45-50..
[2] T. Burgmer, H. Hillebrand, M Pfenninger, "Effects of climate-driven
temperature changes on the diversity of freshwater macroinvertebrates".
Oecologia. vol. 151, 2007, pp. 93-103.
[3] J. G. Holt, N. R Krieg, P. H Smeath, J. T. Staley, S. T Williams, In:
Williams and Wilkins (ed), Bergey's manual of determinative
bacteriology, 1994, 9th edn..
[4] E. A Kachvorian, P H. Adler, Black flies (Diptera, Simuliidae) of
Armenia. Biological Journal of Armenia vol. 3-4, 1999, pp. 299-301.
[5] E. A. Kachvoryan, M. V. Harutynova, K. V. Harutynova, D. Werner, P.
H. Adler, Biodiversity of black flies (Diptera: Simuliidae) in relation to
water quality in the Hrazdan River system of Armenia. Studia
Dipterologica Suppl vol. 14, 2006, pp. 67-73.
[6] E. A. Kachvoryan, V. S. Hovhannisyan, N. A. Petrova, N. I. Zelentcov,
"Species composition of black flies and chironomids and the
hydrochemical regime in the Hrazdan River". (Armenia).
Entomologicheskoe obozrenie: vol. 86, 2007, pp. 104--113.
[7] K. G. Karageuzyan, L. A. Chubareva, E. A. Kachvoryan, P. H. Adler, N.
A. Petrova, T. N. Kyureghyan, L. D. Harutyunova, V. S. Hovhannisyan,
M. A. Simonyan, "Ecological conditions of Hrazdan River" (Armenia).
Vestnik MANEB, S-Petersburg vol. 8, 2003, pp. 30-34.
[8] A. Karakhanian, P. Tozalakyan, J. C. Grillot, H. Philip, D. Melkonyan,
R. Paronyan, S. Arakelyan, "Tectonic impact on the Sevan Lake
environment (Armenia)". Environmental Geology vol. 20(3) , 2000, pp.
279-288.
[9] H. Kruse and H. Sorum, "Transfer of multiple drug resistance plasmids
between bacteria of diverse origins in natural microenvironments". Appl
Environ Microbiol vol. 60, 1994, pp. 4015-4021.
[10] K. Molbak, "Spread of Resistant Bacteria and Resistance Genes from
Animals to Humans--The Public Health Consequences". J Vet Med B
Infect Dis Vet Public Health vol. 51, 2004, pp. 364-369.
[11] P. R. Murray, E. J. Baron, M. A. Pfaller, P. C. Tenover, R. H.Yolken,
Manual of Clinical Microbiology, 6th edn. American Society for
Microbiology, Washington, DC. 1995.
[12] A. Pepoyan, S. Mirzabekyan, R. Aminov, "Antibiotic resistance in
commensal Escherichia coli in Armenia", Electronic Journal of Natural
Sciences vol. 2, 2005, pp. 28-31.
[13] A. A. Salyers, A. Gupta, Y. Wang, "Human intestinal bacteria as
reservoirs for antibiotic resistance genes", Trends Microbiol vol. 12,
2004, pp. 412-416.
[14] A. E. Terteryan, Diptera: Black flies (Simuliidae). "Fauna of the
Armenian SSR", Izdatel-tsvo Akademii Nauk Armyanskoi SSR,
Yerevan. 1968, p 271.
[15] A. Weisheimer and T. N. Palmer, "Changing frequency of occurrence of
extreme seasonal temperatures under global warming", Geophys. Res.
Lett. 2005.
[16] K. S. Zimmerer, Human Geography and the "New Ecology": The
prospect and promise of integration. Annals of the Association of
American Geographers vol. 84, 1994, pp. 108-125.