The aim of the study was to clarify the applicability of total coverage percentage of macrophytes and depth limit of submerged plants for the quality estimations of Estonian lakes. Total coverage does not seem to be correlative with lake quality. The depth limit of submerged plants appears to be a better characteristic of the state of small lakes, and is relatively well correlated with water transparency, less with chlorophyll a content. In large L. Peipsi the mean of macrophyte depth limit would be a better characteristic than single maximum values.
Berg, M. S. van den. 1999. Charophyte colonization in shallow lakes. Thesis Vrije Universiteit (Doctoral thesis), Amsterdam.
Directive 2000/60/EC of the European Parliament and of the Council of the European Union 23 October, 2000. Off. J. Eur. Communities, 22, 1–72.
Feldmann, T. & Mäemets, H. 2004. Macrophytes. In Lake Võrtsjärv (Haberman, J., Pihu, E. & Raukas, A., eds), pp. 185–205. Estonian Encyclopaedia Publishers, Tallinn.
Forsberg, C. 1964. Phosphorus, a maximum factor in the growth of Characeae. Nature, 201, 517–518.
Forsberg, C. 1965. Ecological and physiological studies of charophytes. Acta Univ. Upsal., 53.
Krause, W. 1981. Characeen als Bioindikatoren für den Gewässerzustand. Limnologica, 13(2), 399–418.
Krause, W. 1997. Charales (Charophyceae). Süsswasserflora von Mitteleuropa 18. G. Fisher Verl., Jena–Stuttgart–Lübeck–Ulm.
Lee, R. E. 1999. Phycology. Third ed. Cambridge University Press.
Mäemets, A. (ed.) 1968. Eesti järved. Valgus, Tallinn.
Mäemets, A. 1974. On Estonian lake types and main trends of their evolution. In Estonian Wetlands and Their Life (Kumari, E., ed.), pp. 29–62. Valgus, Tallinn.
Mäemets, H. 2002. Commented list of macrophyte taxa of Lake Võrtsjärv. Proc. Estonian Acad. Sci. Biol. Ecol., 51, 5–25.
Mäemets, H. & Freiberg, L. 2004. Characteristics of reeds on Lake Peipsi and the floristic consequences of their expansion. Limnologica, 34, 83–89.
Mäemets, H. & Freiberg, L. 2005. Long- and short-term changes of the macrophyte vegetation in strongly stratified hypertrophic Lake Verevi. Hydrobiologia, 547, 175–184.
Mäemets, H. & Mäemets, A. 2000. Commented list of macrophyte taxa of Lake Peipsi. Proc. Estonian Acad. Sci. Biol. Ecol., 49, 136–154.
Mäemets, H. & Mäemets, A. 2001. Macrophytes. In Lake Peipsi. III. Flora and Fauna (Haberman, J. & Pihu, E., eds), pp. 9–22. Sulemees Publishers, Tartu.
Mäemets, H., Freiberg, L., Haldna, M. & Möls, T. 2006. Inter-annual variability of Potamogeton perfoliatus stands. Aquat. Bot., 85, 177–183.
Nõges, P. & Ott, I. 2003. Eesti järveteadus Euroopa tõmbetuultes. In Eesti IX Ökoloogiakonverentsi lühiartiklid (Frei, T., ed.), pp. 159–172. Tartu.
Ott, I. & Kõiv, T. 1999. Estonian Small Lakes: Special Features and Changes. Tallinn.
Phillips, G. 2006. Derivation of chlorophyll boundaries based on changes to maximum depth distribution of submerged macrophytes. http://forum.europa.eu.int/Members/jrc/jrc/jrc_eewai/library
Portelje, R. 2006. Derivation of chlorophyll-a Good/Moderate boundaries from its effects on submerged macrophytes. http://forum.europa.eu.int/Members/jrc/jrc/jrc_eewai/library
Riikoja, H. 1940. Zur Kenntnis einiger Seen Ost-Eestis, insbesondere ihrer Wasserchemie. Ann. Soc. rebus nat. invest. Univ. Tartu. constitut., 46, 168–329.
Rooney, N. & Kalff, J. 2000. Inter-annual variation in submerged macrophyte community biomass and distribution: the influence of temperature and lake morphometry. Aquat. Bot., 68, 321–335.
Scheffer, M. 1998. Ecology of Shallow Lakes. Chapman & Hall, London, UK.
Schmieder, K. 1998. Submerse Makrophyten der Litoralzone des Bodensees 1993 im Vergleich mit 1978 und 1967. Ber. Int. Gewässerschutzkomm. Bodensee, 46.
Sviridenko, B. F. 2000. Flora and Vegetation of the Lakes of North Kazakhstan. Omsk (in Russian).
Valta-Hulkkonen, K., Kanninen, A., Ilvonen, R. & Leka, J. 2005. Assessment of aerial photography as a method for monitoring aquatic vegetation in lakes of varying trophic status. Boreal Environ. Res., 10, 57–66.
