[Addinsoft, 2013, XLSTAT [Computer Software], New York, New York. Retrieved from http://www.xlstat.com/.]Search in Google Scholar
[BMLFUW [Bundesministers für Land- und Forstwirtschaft, Umwelt und Wasserwirtschaft], 2010, 99. Verordnung des Bundesministers für Land- und Forstwirtschaft, Umwelt und Wasserwirtschaft über die Festlegung des ökologischen Zustandes für Oberflächengewässer (Qualitätszielverordnung Ökologie Oberflächengewässer – QZV Ökologie OG). Bundesgesetzblatt für die Republik Österreich, am 29 März 2010, Teil II, [CELEX-Nr.: 32000L0060].]Search in Google Scholar
[Borowiak D., Nowiński K., Barańczuk J., Marszelewski W., Skowron R., Solarczyk A., 2011, Relationship between areal hypolimnetic oxygen depletion rate and the trophic state of five lakes in northern Poland, Limnol. Rev. 11(4): 135–142.10.2478/v10194-011-0035-z]Search in Google Scholar
[[CIS-WFD] Common Implementation Strategy – Water Framework Directive, 2003a, Guidance on establishing reference conditions and ecological status classes boundaries for inland surface waters, Guidance document of Working Group 2.3 Reference conditions for inland surface waters (REFCOND), 86 pp.]Search in Google Scholar
[[CIS-WFD] Common Implementation Strategy – Water Framework Directive, 2003b, Overall Approach to the Classification of Ecological Status and Ecological Potential, Guidance document of Working Group 2A Ecological Status (ECOSTAT), 53 pp.]Search in Google Scholar
[Cornett R.J., Rigler F.H., 1980, The areal hypolimnetic oxygen deficit: An empirical test of the model, Limnol. Oceanogr. 25: 672–679.10.4319/lo.1980.25.4.0672]Search in Google Scholar
[[DEFRA] Department for Environment, Food and Rural Affairs, 2015, 2010 to 2015 government policy: water quality [updated 8 May 2015], Environment Agency, Office for Water Services. Retrieved from https://www.gov.uk/government/publications/2010-to-2015-government-policy-water-quality.]Search in Google Scholar
[Direktoratsgruppa, 2013, Veileder 02:2013. Klassifisering av miljøtilstand i vann. Økologisk og kjemisk klassifiseringssystem for kystvann, grunnvann, innsjøer og elver, Direktoratsgruppa for gjennomføring av vanndirektivet, 263 pp. (in Norwegian).]Search in Google Scholar
[[EC] European Commission, 2000, Directive 2000/60/EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy, Offic. J. Eur. Union L327 43: 1–72.]Search in Google Scholar
[[EC] European Commission, 2006, Directive 2006/44/EC of the European Parliament and of the Council of 6 September 2006 on the quality of fresh waters needing protection or improvement in order to support fish life, OJEU L 264 49: 20–31.]Search in Google Scholar
[Edwards W.J., Conroy J.D., Culver D.A., 2005, Hypolimnetic oxygen depletion dynamics in the central basin of Lake Erie, J. Great Lakes Res. 31(2): 262–271.10.1016/S0380-1330(05)70319-1]Search in Google Scholar
[Gibson G., Carlson R., Simpson J., Smeltzer E., Gerritson J., Chapra S.H., Jones J., Kennedy R., 2000, Nutrient criteria technical guidance manual: Lakes and reservoirs, US EPA-822-B00-001, Office of Water. Office of Science and Technology, Washington.]Search in Google Scholar
[Gliwicz Z.M., 1979, Metalimnetic gradients and trophic state of lake epilimnia, Mem. Ist. Ital. Idrobiol. 37: 121–143.]Search in Google Scholar
[Hutorowicz A., Pasztaleniec A., 2014, Phytoplankton metric of ecological status assessment for Polish lakes and its performance along nutrient gradients, Pol. J. Ecol. 62: 525–542.10.3161/104.062.0312]Search in Google Scholar
[Kajak Z., 1998, Hydrobiologia – limnologia. Ekosystemy wód śródlądowych. (Hydrobiology – limnology. Inland water ecosystems). PWN, Warszawa, 355 pp. (in Polish).]Search in Google Scholar
[Korycka A., 1969, Seasonal changes in water chemical composition in seven lakes, Pol. Arch. Hydrobiol. 16: 1–29.]Search in Google Scholar
[Kudelska D., Soszka H., Cydzik D., 1997, Ekosystemowe podejście do oceny jakości jezior w Polsce. (The ecosystem approach to assessing the quality of lakes in Poland), Ochr. Środ. i Zasob. Natur. 11: 85–92 (in Polish, English summary).]Search in Google Scholar
[Livingstone D.M., Imboden D.M., 1996, The prediction of oxygen profiles: a plea for a deductive approach, Can. J. Fish. Aquat. Sci. 53(4): 924–932.10.1139/f95-230]Search in Google Scholar
[Marszelewski W., 2005, Zmiany warunków abiotycznych w jeziorach Polski Północno-Wschodniej (Changes of the abiotic conditions in the lakes of North-East Poland), Wydaw. UMK, Toruń, 288 pp. (in Polish, English summary).]Search in Google Scholar
[[ME] Minister of the Environment, 2013, Rozporządzenie Ministra Środowiska z dnia 21 listopada 2013 r. zmieniające rozporządzenie w sprawie prowadzenia monitoringu jednolitych części wód powierzchniowych i podziemnych (Regulation of the Minister of the Environment of 21 November 2013 amending the regulation on the monitoring of surface water bodies and groundwater), Journal of Laws, 2013, item 1558.]Search in Google Scholar
[[ME] Minister of the Environment, 2014, Rozporządzenie MŚ z dnia 22 października 2014 r. w sprawie sposobu klasyfikacji jednolitych części wód powierzchniowych oraz środowiskowych norm jakości dla substancji priorytetowych (Regulation of the Minister of the Environment of 22 October 2014 on the classification of surface water bodies and environmental quality standards for priority substances), Journal of Laws, 2014, item 1482).]Search in Google Scholar
[[MEEM] Ministére de l’Environement, de l’Énergie et de la Mer, 2016, Guide relatif à l’évaluation de l’état des eaux de surface continentales (cours d’eau, canaux, plans d’eau). Retrieved from http://www.developpement-durable.gouv.fr/IMG/pdf/Guide_REEEESC_mise_a_jour_2016.pdf]Search in Google Scholar
[Nürnberg G.K., 1995, Quantifying anoxia in lakes, Limnol. Oceanogr. 40(6): 1100–1111.10.4319/lo.1995.40.6.1100]Search in Google Scholar
[Olszewski P., Paschalski J., 1959, Wstępna charakterystyka limnologiczna niektórych jezior Pojezierza Mazurskiego (Preliminary limnological characterization of some lakes in the Mazurian Lake District), Zesz. Nauk. WSR Olszt. 4: 1–110 (in Polish, English summary).]Search in Google Scholar
[Patalas K., 1960, Stosunki termiczne i tlenowe oraz przezroczystość wody w 44 jeziorach okolic Węgorzewa (Thermal and oxygen conditions, and water transparency in 44 lakes of Węgorzewo district), Roczn. Nauk Roln. 77B(1): 105–210 (in Polish, English summary).]Search in Google Scholar
[Radwan S., Kowalczyk C., Podgórski W., Fall J., 1973, Materiały do hydrochemii Pojezierza Łęczyńsko-Włodawskiego. Część III. Właściwości fizyczne i chemiczne (A contribution to the hydrochemistry of the Łęczna and Włodawa Lake District. Part III: Physical and chemical properties), Ann. UMCS C 28: 97–116 (in Polish, English summary).]Search in Google Scholar
[[SEPA] Swedish Environmental Protection Agency, 2010, Status, potential and quality requirements for lakes, watercourses, costal and transitional waters. A handbook on how quality requirements in bodies of surface water can be determined and monitored, Handbook 2007 4: 1–65. Retrieved from www.naturvardsverket.se]Search in Google Scholar
[Vollenweider R.A., Janus L.L., 1982, Statistical models for predicting hypolimnetic oxygen depletion rates, Mem. Ist. Ital. Idrobiol. 40(1): 1–24.]Search in Google Scholar
[Walker W.W. Jr., 1979, Use of hypolimnetic oxygen depletion rate as a trophic state index for lakes, Water Resour. Res. 15(6): 1463–1470.10.1029/WR015i006p01463]Search in Google Scholar
[Wetzel R.G., 2001, Limnology: Lake and river ecosystems, Academic Press, New York, 1006 pp.]Search in Google Scholar
[Zachwieja J., 1975, Seasonal and several years’ fluctuations of temperature, oxygen content and water visibility in the Mamry Lake complex, Ekol. Pol. 23: 587–601.]Search in Google Scholar
