Spatial variability and long-term changes of the trophic parameters in the Great Masurian Lakes (Poland)

Kufel, Irena; Kufel, Lech

doi:ISSN 1505-2249

Skip to main menu
Skip to search engine
Skip to content
Skip to footer

Download

Title: Spatial variability and long-term changes of the trophic parameters in the Great Masurian Lakes (Poland)

Abstract:

Hydrologic division of the Great Masurian Lakes (North-eastern Poland) into the northern and southern drainage basin was found to be reflected in different trophic status of lakes. Chlorophyll (but not nutrient) concentrations in the northern part of the system were significantly lower than those in lakes of the southern part. It has been shown that tunnel-valley lakes (numerous in the southern watershed) appear to be more eutrophied in terms of chlorophyll abundance than morainic stratified lakes. Hypolimnetic enrichment and internal loading were probably responsible for the lack of in-lake phosphorus and chlorophyll decline in spite of the evident decrease of the external nutrient loading which had taken place between 1985 and 1996. Such a positive response was observed, however,in the case of nitrogen. Only in a hypertrophic Lake Niegocin some symptoms of recovery were noted after reduction of external point source pollution.

References:

Gliwicz Z. M. 1979 - Metalimnetic gradients and trophic state of lake epilimnia - Mem. Ist. Ital. Idrobiol., 37: 121-145.
Gliwicz Z. M., Kowalczewski A. 1981 - Epilimnetic and hypolimnetic symptoms of eutrophication in Great Masurian Lakes, Poland - Freshwater Biology, 11: 425-433.
Golterman H. L. 1969 - Methods for chemical analysis of fresh waters - Blackwell Scientific Publications, Oxford and Edinburgh, 172 pp.
Hillbricht-Ilkowska A. 1993 - Phosphorus loading to lakes of Suwałki Landscape Park (north-eastern Poland) and its relation to lake trophy indices - Ekol. Pol., 41: 221-235.
Kufel L. 1998 - Chlorophyll - nutrients - Secchi disc relationships in the Great Masurian Lakes (north-eastern Poland) - Pol. J. Ecol., 46: 327-337.
Mazumder A. 1994a - Phosphorus-chlorophyll relationships under contrasting herbivory and thermal stratification: predictions and patterns - Can. J. Fish. Aquat. Sci., 51: 390-400.
Mazumder A. 1994b - Phosphorus-chlorophyll relationships under contrasting zooplankton community structure: potential mechanisms - Can. J. Fish. Aquat. Sci., 51: 40 1-407.
Moss B., Beklioglu M., Carvalho L., Kilinc S., Mc Gowan S., Stephen D. 1997 - Vertically challenger limnology: contrasts between deep and shallow lakes - Hydrobiologia, 342/343: 257-267.
Ochrona środowiska w województwie suwalskim w latach 1993-1996 [Environmental protection in the Suwałki province in the years 1993-1996] 1997 - Urząd Statystyczny w Suwałkach, 95 pp.
Reynolds C. S. 1992 - Eutrophication and the management of planktonic algae: what Vollenweider couldn't tell us. In: D. W. Suttcliff and J. G. Jones (Eds) Eutrophication: research and application to water supply - Freshwater Biological Association, 4-29.
Sas H. 1989 - Lake restoration by reduction of nutrient loading: expectations, experiences, extrapolations - Academia Verlag, Richarz, St. Augustin, 497 pp.
Scheffer M. 1998 - Ecology of shallow lakes - Chapman & Hall, London, Weinheim, New York, 357 pp.
Solórzano L. 1969 - Determination of ammonia in natural waters by the phenylhypochlorite method - Limnol. Oceanogr., 14: 799-800.
Vollenweider R. A. 1976 - Advances in defining critical load levels for phosphorus in lake eutrophication - Mem. Ist. Ital. Idrobiol., 33: 53-83.
Zdanowski B., Hutorowicz A. 1994 - Salinity and trophy of Great Masurian Lakes (Masurian Lakeland, Poland) - Ekol. Pol., 42: 317-331.