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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">gesj</journal-id><journal-title-group><journal-title xml:lang="en">GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</journal-title><trans-title-group xml:lang="ru"><trans-title>GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2071-9388</issn><issn pub-type="epub">2542-1565</issn><publisher><publisher-name>Russian Geographical Society</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15356/2071-9388_03v09_2016_05</article-id><article-id custom-type="elpub" pub-id-type="custom">gesj-108</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ENVIRONMENT</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Окружающая среда</subject></subj-group></article-categories><title-group><article-title>OPTICAL PROPERTIES OF LAKE VENDYURSKOE</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Zdorovennov</surname><given-names>Roman G.</given-names></name></name-alternatives><email xlink:type="simple">romga74@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Gavrilenko</surname><given-names>Galina G.</given-names></name></name-alternatives><email xlink:type="simple">face@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Zdorovennova</surname><given-names>Galina E.</given-names></name></name-alternatives><email xlink:type="simple">face@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Palshin</surname><given-names>Nikolay I.</given-names></name></name-alternatives><email xlink:type="simple">face@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Efremova</surname><given-names>Tatyana V.</given-names></name></name-alternatives><email xlink:type="simple">face@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Golosov</surname><given-names>Sergey D.</given-names></name></name-alternatives><email xlink:type="simple">face@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Terzhevik</surname><given-names>Arkady Yu.</given-names></name></name-alternatives><email xlink:type="simple">face@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Northern Water Problems Institute</institution><country>Russian Federation</country></aff><aff xml:lang="en" id="aff-2"><institution>Northern Water Problems Institute, Institute of Limnology, Russian Academy of Sciences</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>01</day><month>09</month><year>2016</year></pub-date><volume>9</volume><issue>3</issue><fpage>74</fpage><lpage>87</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Zdorovennov R.G., Gavrilenko G.G., Zdorovennova G.E., Palshin N.I., Efremova T.V., Golosov S.D., Terzhevik A.Y., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Zdorovennov R.G., Gavrilenko G.G., Zdorovennova G.E., Palshin N.I., Efremova T.V., Golosov S.D., Terzhevik A.Y.</copyright-holder><copyright-holder xml:lang="en">Zdorovennov R.G., Gavrilenko G.G., Zdorovennova G.E., Palshin N.I., Efremova T.V., Golosov S.D., Terzhevik A.Y.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://ges.rgo.ru/jour/article/view/108">https://ges.rgo.ru/jour/article/view/108</self-uri><abstract><p>We conducted a field study on light conditions in a small boreal Karelian Lake Vendyurskoe over two years. Albedo of ice-covered lake varied from 0.9 to 0.1, and the euphotic zone depth exceeded 3.5 m during the melting stage. The Secchi disc depth changed from 2.5 m after ice-break to 3.7 m at the stage of early summer. The vertical distribution of the photosynthetically active solar radiation (PAR) attenuation coefficient for water Kw was characterized by high spatial (vertical) and temporal (seasonal and interannual) variabilitywhich can be connected with the dynamics of plankton cells. The highest values of Kw  eached 2–2.8 m–1 in the upper 0.5 m layer of a water column, and decreased to 0.5–1.5 m–1 with increasing depth. The highest values of Kw were marked in the end of ice-covered period.</p></abstract><kwd-group xml:lang="en"><kwd>ice-covered lake</kwd><kwd>albedo</kwd><kwd>photosynthetically active radiation</kwd><kwd>under-ice irradiance</kwd><kwd>PAR attenuation coefficient</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Arst H., Erm A., Leppäranta M. &amp; Reinart A. (2006) Radiative characteristics of ice-covered fresh- and brackish-water bodies. Proc. of the Estonian Academy of Sciences, Geology. 55 (1): 3–23.</mixed-citation><mixed-citation xml:lang="en">Arst H., Erm A., Leppäranta M. &amp; Reinart A. (2006) Radiative characteristics of ice-covered fresh- and brackish-water bodies. 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