Armine Hayrapetyan

Armine Hayrapetyan
National Academy of Sciences of Armenia | NAS RA · Scientific Center of Zoology and Hydroecology

PhD

About

25
Publications
2,894
Reads
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61
Citations
Citations since 2017
10 Research Items
57 Citations
2017201820192020202120222023051015
2017201820192020202120222023051015
2017201820192020202120222023051015
2017201820192020202120222023051015
Additional affiliations
March 2001 - February 2015
National Academy of Sciences of Armenia
Position
  • Senior Researcher
Education
July 2007
Training course- Building Capacity for Biodiversity Conservation in Eastern Europe and Central Asia, Belarus wetlands Biodiversity Conservation
Field of study
August 2004
University of Jyväskylä
Field of study
  • 14th Jyvaskyla summer school, BIO2: Continues Monitoring and Automatic Sensing of Inland Waters
September 1996 - June 2002
Armenian State Pedagogical University
Field of study

Publications

Publications (25)
Article
Full-text available
The nocturnal vertical migration activity of amphipods in the two coastal areas of Lake Baikal, exposed and not exposed to the influence of artificial lighting was investigated. In the conditions of prolonged artificial lighting, the migration activity of amphipods reduced on average by 20 times. Statistical analysis demonstrated significant differ...
Article
Full-text available
Lake Sevan, Armenia, is the largest freshwater body in the Caucasus region. Cyanobacteria have become increasingly dominant in summer in Lake Sevan, reflecting the eutrophication of the lake and formed a massive bloom event in 2018. These recent observations mark the transition of this previously oligotrophic high mountain lake into a eutrophic lak...
Article
Full-text available
A study of the horizontal and vertical distribution of phytoplankton in Lake Sevan was conductedin mid-July 2018 during the maximum Cyanoprokaryota blooms. The summer biomass of algae in the pelagiczone of the lake corresponded to values of mesatrophic waters. The Cyanoprokaryota biomass in Lake Sevanhas horizontal and vertical heterogeneity and is...
Article
Full-text available
Annual changes in the quantitative characteristics and structure of zooplankton in the pelagic and littoral zones of Lake Sevan in October have been determined by a number of factors, among which the biomass of the main planktophage, whitefish (Coregonus lavaretus L., 1758), have the greatest effect. The richest communities form due to Cladocera up...
Article
Full-text available
Based on an analysis of interannual changes in the summer zooplankton of the littoral and pelagic zones in Lake Sevan, the relationship between the quantitative characteristics of the communities with the level regime, the amount of precipitation, the average monthly temperature from April to July, and ichthyomass is shown. Fluctuations in the wate...
Article
Full-text available
Investigating the mechanisms behind the hydroecological effects of small hydropower plants (SHPs) operation is urgently required since increasing growth in the hydropower sector has become a serious threat to river ecosystems. The aim of the present study was to investigate and assess the hydrobiological and-chemical risks of SHPs operation in Arme...
Article
Full-text available
The role of different environmental factors in the formation of zooplankton community in the river ecosystems of the Arpa River catchment basin was investigated. The results of the study showed that zooplankton diversity in the mentioned ecosystems was significantly affected by the river velocity, which caused not only deterioration but also improv...
Article
Full-text available
The qualitative composition and structure of the autumn zooplankton in the pelagic zone of Lake Sevan in years that were characterized by different abundancies of fish are described. In October 2013, upon the increase in whitefish abundance, the species richness of zooplankton increased insignificantly; the values of the trophic coefficient and the...
Article
Full-text available
Investigations carried out by different authors have shown that during Summer period, algal bloom in "Yerevanyan lich" reservoir situated in the southwest of Yerevan city, Armenia occurs. Taking into consideration the possible environmental effects of reservoir algae bloom, the zooplanktonic community and saprobic state of "Yerevanyan lich" reservo...
Article
Full-text available
Для мелководных участков Малого Севана, образованных в результате поднятия уровня воды, проанализированы качественный и количественный составы донных макробеспозвоночных, макрофитов и зоопланктона, а также ихтиофауна и паразиты рыб. Показано, что наиболее благоприятные условия для развития гидробионтов сложились на участке, который был затоплен ран...
Article
Full-text available
Qualitative and quantitative structures of benthic macro-invertebrates, macrophytes, zooplankton, as well as ichthyofauna and fish parasites of the shallow areas of Small Sevan that flooded as a result of an increase in the lake’s water level are analyzed. It is shown that the most appropriate conditions for the development of hydrobionts were foun...
Article
Full-text available
Features of the composition and structure of the summer zooplankton in the pelagic zone of Lake Sevan in years that were characterized by different abundances and biomasses of fish are described. It is shown that the species diversity of the community and the specific number of species of zooplankteurs, the quantity of Copepods in the total abundan...
Article
Full-text available
This study presents data on the quantitative parameters of bacterioplankton, zooplankton, and fish at the current stage of development of Lake Sevan. This stage is characterized by an increase in water level, a significant reduction in fish stock, and the maximum biomass of zooplankton (due to the massive development of cladocerans) observed during...
Conference Paper
River Hrazdan is the unique out flowing river from lake Sevan. The river, which flows through comparatively densely populated part of Armenia, including capital Yerevan, is significant for the economy of country. Practically none of the scientific works contain any databases on zooplnakton community of the river Hrazdan. Between 2005-2006, 20 samp...
Article
Full-text available
The zooplankton of some of areas of the littoral and tributaries of lake Sevan has been researched (October, 2007). 15 species of invertebrates: 8-Rotatoria, 3-Copepoda and 4-Cladocera have been recognized. For the first time in the zooplankton of the lake and its basin the folowing nine species of invertebrates were revealed: Polyarthra dolichopte...

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