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1

Pelagic phytoplankton of shallow lakes

100%
Kozak A., Kowalczewska-Madura K.
Polish Journal of Environmental Studies
|
2010
|
tom 19
|
nr 3
593-597
Our study was undertaken to perform comparative analysis of five lakes in the area of the Promno Landscape Park: Brzostek, Dębiniec, Dobre, Kazanie, and Wójtostwo. The physico-chemical parameters of the lakes, including water temperature, chlorophyll-a, dry mass of seston, dissolved oxygen, pH, conductivity, visibility, nitrogen concentrations (ammonium, nitrate, and nitrite), and phosphorus (water-dissolved phosphates and total phosphorus) were measured. The species composition, abundance, and biomass of phytoplanktonic organisms were studied in five lakes. Water samples were collected in summer 2007. The analysis exhibited extensive variability, both in respect to the number of taxa and phytoplankton abundance. The most numerous group of algae, in respect to the number of taxa, were green algae.
2
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Phytoplankton community structure in small water bodies on the Cybinka River

100%
Kozak A., Kowalczewska-Madura K.
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
|
2009
|
tom 13
3

Internal loading of phosphorus from sediments of Swarzedzkie Lake [Western Poland]

100%
Kowalczewska-Madura K., Goldyn R.
Polish Journal of Environmental Studies
|
2009
|
tom 18
|
nr 4
635-643
Sediments, being the most important source of phosphorus (P) in the shallow (max. depth 7.2 m), polymictic Swarzędzkie Lake during the summer, were thoroughly studied in laboratory experiments with intact cores sampled at 7 stations in four seasons of the year. Under anaerobic conditions P release rates peaked in the samples from the deepest part of the lake at 26.86 mgP m⁻²d⁻¹. However, the highest rates were determined at one of the littoral sites (near the mouth of a polluted stream) at 59.5 mgP m⁻²d⁻¹. Littoral P release coincided with occasionally low oxygen concentrations (0.2 mgO₂ l⁻¹) above the bottom. On the scale of the whole lake, P release from the littoral zone, where both temperature and oxygen concentration were highly variable, had the strongest influence on the trophic state. It accounted for 63% of the annual internal load but only 55% of total lake area.
4

Models of phosphorus turn-over in a hypertrophic lake: the Lake Swarzedzkie case study

100%
Kowalczewska-Madura K., Goldyn R.
Oceanological and Hydrobiological Studies
|
2010
|
tom 39
|
nr 3
5

Chlorophyll a and other water quality variables in lentic and lotic sections of the Cybina River

100%
Goldyn R., Kowalczewska-Madura K.
Oceanological and Hydrobiological Studies
|
2005
|
tom 34
|
nr 1
6

Osady denne Jeziora Slawskiego. Wyniki badan wybranych parametrow chemicznych

81%
Kowalczewska-Madura K., Zak J., Grzeskowiak A.
Wiadomości Meteorologii, Hydrologii, Gospodarki Wodnej
|
2008
|
tom 02
|
nr 3-4
21-48
7

Water quality and phytoplankton of the recreational used lake Slawskie

81%
Kozak A., Goldyn R., Kowalczewska-Madura K., Zimmer M.
Polish Journal of Natural Sciences
|
2012
|
tom 27
|
nr 4
The main purpose of this study was to determine the water quality parameters, phytoplankton composition and their seasonal variation in the Lake Sławskie. Samples for water quality analyses were collected once amonth in the years 2010–2011. According to physico-chemical parameters the ecological status of the Lake Sławskie was moderate. The lake is characterized by thermal and oxygen stratification within a period of summer. Among mineral forms of nitrogen an ammonium nitrogen dominated. In the case of ammonium nitrogen the maximum concentration reached 3.45 mg N-NH₄ l⁻¹ in summer 2010 (near the bottom). In winter and early spring periods the participation of nitrate nitrogen increased. Its maximum concentration was noted in February 2010 (1.58 mg N-NO₃ l⁻¹). Participation of nitrite nitrogen in water was low. The concentrations of dissolved phosphates and total phosphorus reached 0.53 mg P l⁻¹ and 0.61 mg P l⁻¹ near the bottom layer in the summer 2010, respectively. The qualitative and quantitative structure of phytoplankton were analyzed. The number of algae ranged from 100 org. ml⁻¹ to 23.1 · 10³ org. ml⁻¹. Domination of cryptophytes, chrysophytes, diatoms, chlorophytes and dinophytes were noted.
8

Phytoplankton composition and physicochemical properties in Lake Swarzedzkie (midwestern Poland) during restoration: Preliminary results

81%
Kozak A., Kowalczewska-Madura K., Goldyn R., Czart A.
Archives of Polish Fisheries
|
2014
|
tom 22
|
nr 1
9

Phosphorus release from the bottom sediments of Lake Rusałka (Poznan, Poland)

81%
Kowalczewska-Madura K., Goldyn R., Dondajewska R.
Oceanological and Hydrobiological Studies
|
2010
|
tom 39
|
nr 4
10

Internal phosphorus loading in selected lakes of the Cybina River valley

81%
Kowalczewska-Madura K., Dondajewska R., Goldyn R.
Oceanological and Hydrobiological Studies
|
2010
|
tom 39
|
nr 3
11

The bottom sediments of Lake Uzarzewskie – a phosphorus source or sink?

81%
Kowalczewska-Madura K., Goldyn R., Dondajewska R.
Oceanological and Hydrobiological Studies
|
2010
|
tom 39
|
nr 3
12

Wplyw zanieczyszczen przestrzennych na jakosc wod rzeki Cybiny

81%
Goldyn R., Szyper H., Kowalczewska-Madura K.
Roczniki Akademii Rolniczej w Poznaniu. Rolnictwo
|
2006
|
tom 65
29-37
13

Changes of summer phytoplankton communities in Lake Swarzedzkie in the 2000-2003 period

80%
Stefaniak K., Goldyn R., Kowalczewska-Madura K.
Oceanological and Hydrobiological Studies
|
2007
|
tom 36
|
nr Suppl.1
14

Zooplankton phosphorus excretion in Swarzedzkie Lake [Western Poland] and its influence on phytoplankton

80%
Kowalczewska-Madura K., Goldyn R., Szyper H.
Oceanological and Hydrobiological Studies
|
2007
|
tom 36
|
nr 1
15

Water quality and phytoplankton community in selected recreational lakes and reservoirs under restoration measures in Western Poland

71%
Kozak A., Dondajewska R., Kowalczewska-Madura K., Goldyn R., Holona T.
Polish Journal of Natural Sciences
|
2013
|
tom 28
|
nr 2
The goal of our studies was to determine the taxonomic composition of phytoplankton and physico-chemical water properties in selected lakes and reservoirs in Western Poland to estimate the influence of restoration measurements. Polimictic Maltański Reservoir (restored by means of phosphorus inactivation and biomanipulation) was characterized by increased concentrations of ammonium nitrogen as well as chlorophyll a (over 100 μg l⁻¹ in autumn 2011), related to cyanobacteria bloom. Slightly lower values of chlorophyll-a were noted in Sławskie Lake (ca. 42 μg l⁻¹, sewage inflow divertion), where organic nitrogen and orthophosphate content increased in time in analyzed season. Lowest concentrations of phosphorus were noted in Głębokie Lake (aeration and phosphorus inactivation), while a little bit higher were observed in polimictic Turawa Średnia Reservoir (also aeration and phosphorus inactivation). The latter water body was characterized by some increases in the abundance of cyanobacteria in warm months.
16

Nature-based solutions for protection and restoration of degraded Bielsko Lake

71%
Dondajewska R., Kozak A., Budzynska A., Kowalczewska-Madura K., Goldyn R.
International Journal of Ecohydrology and Hydrobiology
|
2018
|
tom 18
|
nr 4
17

Functioning of the gravel pit lake in Owinska (West Poland) in the years 2001-2005

51%
Goldyn R., Szelag-Wasielewska E., Kowalczewska-Madura K., Dondajewska R., Szyper H., Joniak T., Piechowiak M., Domek P.
Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego
|
2006
|
tom 03
18

Functioning of the Lake Rusałka ecosystem in Poznań (Western Poland)

51%
Goldyn R., Podsiadlowski S., Kowalczewska-Madura K., Dondajewska R., Szelag-Wasielewska E., Budzynska A., Domek P., Romanowicz-Brzozowska W.
Oceanological and Hydrobiological Studies
|
2010
|
tom 39
|
nr 3
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