Wyniki wyszukiwania - Biblioteka Nauki

1

The role of emergent macrophytes in nutrient cycling in Lake Niepruszewskie (western Poland)

100%

Ławniczak A. E.

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tom Vol. 39, No.2

75-83

EN

The role of emergent macrophytes in nutrient cycling was investigated in the littoral zone of Lake Niepruszewskie, which is dominated by this type of vegetation. The lake is characterized by an advanced stage of eutrophication as is evident in the frequent blooms that cause low transparency and high concentrations of chlorophyll a and seston. The shoot biomass of Phragmites australis and Typha angustifolia is the major component of the plant cover with respect to nutrient accumulation. Other plants play a marginal role in the nutrient turnover of the studied lake.

2

Small scale distribution and composition of phytoplankton in a shallow lake

100%

Wojciechowska W. , Solis M.

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tom Vol. 49, nr 1

87-89

EN

Studies were carried out in shallow, eutrophic lake Pereszpa during vegetation season 1996. Samples were taken from the pelagic and littoral zone, where the distance between sampling sites were small (200-300 m). It was revealed in both zones quantitative and qualitative differentiation of phytoplankton during spring-summer period and homogeneity of its community in autumn.

3

Distribution of benthic macroinvertebrates across a reed stand in a brackish Baltic lagoon

100%

Pawlikowski K. , Kornijów R.

Oceanologia

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2022

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tom No. 64 (3)

433--444

EN

The role of reeds in the functioning of ecosystems and their significance for zoobenthos in the coastal lagoons is poorly understood. We hypothesise that next to the spatial zonal differentiation of abiotic factors in the apparently homogeneous habitat of reeds, benthic macroinvertebrate fauna is also unevenly distributed, and differs in taxonomic and functional diversity, as well as density and biomass across the reed stand. The research was carried out in the Vistula Lagoon (southern Baltic) along three designated sectors arranged parallel to the shoreline and differing in distance from the shore and depth. Mean density of reed stems in the analysed stand was within the range of values reported from different American and European wetlands. Regardless of the location within the reeds and the season, the fauna was dominated by detritivorous Tubificinae and larvae of Chironomidae. The highest diversity, density, and biomass of fauna were found in the middle littoral zone, and the lowest in the outer zone adjacent to the open water. The presented data support our hypothesis predicting the existence of a spatial variation pattern in the composition and distribution of macroinvertebrates in response to the changing zonal habitat conditions within the reed stand.

4

Quantitative changes of Planktolyngbya brevicellularis, Limnothrix redekei and Aphanizomenon gracile in the annual cycle vs. physicochemical water parameters in the urban Lake Jeziorak Mały

86%

Zębek E.

Oceanological and Hydrobiological Studies

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2006

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tom Vol. 35, No.1

69-84

EN

The study was conducted on net phytoplankton in the urban Lake Jeziorak Mały (Mazurian Lakeland) in the littoral zone in the years 1998 – 2003. The blue-green algae community was dominated by three species: Planktolyngbya brevicellularis (Cronberg &Komarek), Limnothrix redekei (Van Goor) Meffert and Aphanizomenon gracile Lemm. Changes in the numbers of blue-green algae were analyzed in the annual cycle, with respect to water temperature and orthophosphate concentration. One abundance peak of Planktolyngbya brevicellularis was recorded in July, of Limnothrix redekei in May, and for Aphanizomenon gracile there were two peaks in numbers in May and in August. The relationship between water temperature and the occurrence of blue-greens was statistically significant, whereas in the case of orthophosphate concentration, the coefficient of correlation was statistically significant only for Planktolyngbya brevicellularis. On the basis of equations of multiple regression the proportion of orthophosphate concentration was affirmed to be higher than water temperature. This may suggest that the blue-green species contributed to reducing the phosphorus content of the water, and the largest part in this phenomenon could be played by Planktolyngbya brevicellularis, which developed in the widest temperature range and in this way was a competitor species for remaining species.

5

Qualitative and quantitative changes of diatoms with relation to physiochemical water parameters in the littoral zone of the urban Lake Jeziorak Mały

86%

Zębek E.

Oceanological and Hydrobiological Studies

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2007

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tom Vol. 36, No.4

3-22

EN

Phytoplankton in the littoral zone of the urban Lake Jeziorak Maly (Mazurian Lakeland) were studied between April and October of 2002 and 2003. Five diatom species (Fragilaria delicalissima, Aulacoseira gramilata, Fragilaria capucina, Diatoma vulgaris, Fragilaria crotonensis) and one genus (Rlrizosolenia sp.), comprising the major proportion of total abundance and biomass of diatoms, were chosen for the study. The relationships between the biomass of these diatoms and water temperature, oxygen content, electrolytic conductivity, orthophosphates, silicon and calcium concentrations were analyzed. The biomass of species F. delicatissima, A. granulata and F. capucina tended to be the highest of the six, which were also associated with the widest temperature range, 10.0°C to 18.7°C. These three species exhibited maximum biomass at the highest orthophosphate concentrations. By contrast, F. crotonensis developed in the narrowest water temperature range, 10.0°C to 13.7°C. The maximum biomass of this species was noted at high silicon and calcium concentrations. The diatoms (except i7, capucina and RSiizosolenia sp.) contributed to statistically significant observed reductions in nutrient concentrations during their growth. These results indicate that a range of factors is involved in the productivity and limitation of the studied diatoms, with water temperature being of particular importance.

6

Etude numerique de l’influence de l’état de la mer sur la propagation d’ondes dans un canal

86%

Geringer J.

Oceanologia

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1978

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tom 09

7

Zooplankton of the littoral zone of Lake Glebokie in Szczecin

86%

Szlauer B.

Zeszyty Naukowe. Akademia Rolnicza w Szczecinie. Rybactwo Morskie i Technologia Żywności

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1997

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tom 23

8

Periphytic ciliates in littoral zone of three lakes of different trophic status

86%

Mieczan T.

Polish Journal of Ecology

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2005

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tom 53

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nr 4

EN

Periphytic ciliate communities were investigated in three lakes of different trophic status of the Łęczyńsko-Włodawskie Lake District (Eastern Poland). Observations were made of the periphyton growing on glass-slides. Samples were taken from April to November 2000–2001. Once a month, four periphyton samples were collected in littoral zone. Seventy three ciliate taxa occurred in the studied lakes. The biggest number, 60 species, was found in eutrophic lake, a little less, 55 species, in mesotrophic lake and the least, 49 species, in dystrophic lake. The lowest density was observed in mesotrophic lake and it was 13 × 10³ ind. m⁻², being a little higher in dystrophic lake – 16 × 10³ ind. m⁻², and the highest – 20 × 10³ ind. m⁻² in eutrophic lake. All of the studied lakes were generally dominated by ciliates belonging to the order Cyrtophorida (Chilodonella uncinata Ehrenberg 1983) constituted >30% of the total numbers. In all lakes bacterivorous ciliates occurred in the highest numbers (>50%), while algivorous and histophagous – in the lowest (<5%). In the eutrophic and dystrophic lakes the proportion of omnivorous and predatory species was high. The number of significant correlations differed among lakes. In mesotrophic lake the correlation between ciliates abundance and total organic carbon was found. In eutrophic lake total number of ciliates was positively correlated with the conductivity, TP and TOC. In dystrophic lake the correlations between ciliates abundance and abiotic parameters were not observed. In mesotrophic and dystrophic lakes the content of organic matter positively correlated with the biomass of ciliates, while in eutrophic lake conductivity showed positive correlation with their biomass.

9

Habitat distribution in relation to sample collections of young of year fishes

86%

Leslie J. K. , Timmins C. A.

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nr 3

10

Mollusc [Mollusca] assemblages in the littoral of Lake Barlineckie [Mysliborz Lakeland]

86%

Agapow L. , Piekarska A.

Acta Scientiarum Polonorum. Piscaria

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2003

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tom 02

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nr 2

11

Contribution a la connaissance des cilies psammophiles de la Baltique

86%

Czapik A. , Fyda J.

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1992

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tom 31

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nr 2

12

The effect of dense patches of Stratiotes aloides L. on the spatial structure of microcrustacean assemblages in an oxbow lake

72%

Strzalek M. , Koperski P.

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tom 19

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nr 1

13

The influence of hydromorphological modifications of the littoral zone in lakes on macrophytes

72%

Jusik S. , Maciol A.

Oceanological and Hydrobiological Studies

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2014

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tom 43

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nr 1

14

The diurnal distribution of the zooplankton community of the littoral zone of Lake Wielkowiejskie [Wielkopolski National Park, Poland]

72%

Kuczynska-Kippen N. , Milecka E.

Oceanological and Hydrobiological Studies

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2009

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tom 38

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nr 2

91-98

15

The significance of stone moroko, Pseudorasbora parva (Temminck and Schlegel), in the small-sized fish assemblages in the littoral zone of the heated Lake Licheńskie

72%

Kapusta A. , Bogacka-Kapusta E. , Czarnecki B.

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2008

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tom 16

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nr 1

16

Changes in the littoral vegetation of Lake Dlugie in Olsztyn caused by restoration

72%

Ciecierska H.

Oceanological and Hydrobiological Studies

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2008

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tom 37

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nr Suppl.1

17

Zgrupowanie wrotków (Rotatoria) planktonowych w strefie litoralowej zbiornika Dziećkowice

72%

Penczek K.

Problemy Ekologii

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2005

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tom R. 9, nr 1

28-36

PL

W artykule przedstawiono wyniki badań przeprowadzonych w strefie litoralowej zbiornika Dziećkowice. Celem pracy było: określenie składu gatunkowego Rotatoria badanego zbiornika, opisanie struktury dominacji, stałości oraz znaczenia ekologicznego wrotków występujących w zbiorniku Dziećkowice, prześledzenie zmian ilościowych Rotatoria, porównanie występujących zespołów na badanych stanowiskach, zbadanie wpływu czynników abiotycznych na występowanie i zagęszczenie wrotków, określenie sezonowych zmian występowania Rotatoria, określenie trofii i saprobowości zbiornika na podstawie zebranych zgrupowań.

EN

The article presents the results of a research carrier out in the littoral zone of the Dziećkowice reservoir. The study was aimed at determining the species composition of Rotatoria living in the Dziećkowice reservoir, describing their domination structure and ecological role alongside with investigating the quantitative changes of Rotatoria population, analyzing the impact of abiotic factors on the occurrence and condensation of rotifers, determining the seasonal variability of Rotatoria occurrence and the reservoir's trophy and saprophy based on the collected groupings.

18

Parasites of zooplankton and periphyton assemblages in the littoral zone of lakes in Drawa National Park, Poland

72%

Wolska M. , Mazurkiewicz-Zapalowicz K.

Acta Mycologica

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2013

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tom 48

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nr 1

EN

Studies on parasitism in zooplankton and periphyton assemblages were carried out on samples of water collected from Lakes Płociczno and Płociowe in the Drawa National Park in 2008-2011. Occurrence of the fungal mycobiotal and protozoan parasites of invertebrates was recorded in both lakes. Parasitism of Chydorus sp. (Cladocera) by Saprolegnia sp. occurred on 0.8% of individuals of the host population, of Brachionus calyciflorus (Rotifera) by Microsporidium sp. on 1.2% of the host population, and of Nematoda members by Pythium sp. on 5% of the host population. Parasites were recorded only in springtime.

PL

W latach 2008-2011 badano występowanie mikroorganizmów pasożytniczych na gatunkach tworzących zooplankton i peryfiton litoralowy w jeziorach Płociczno i Płociowe w Drawieńskim Parku Narodowym. Występowanie patogenów na organizmach tych zespołów stwierdzono jedynie wiosną. Udokumentowano porażenie Chydorus Leach (Cladocera) przez Saprolegnia sp., Brachionus calyciflorus Pall. (Rotifera) przez Microsporidium sp. oraz przedstawiciela Nematoda przez Pythium sp. Porażenie przez patogeny dotyczyło 0,8% populacji Chydorus sp., 1,2% populacji Brachionus calyciflorus oraz 5% populacji niezidentyfikowanych do gatunku nicieni (Nematoda). W pracy przeanalizowano uzyskane wyniki na tle innych, podobnych badań i przedyskutowano prawdopodobne przyczyny niewielkiego stopnia porażenia organizmów planktonowych i peryfitonowych przez pasożyty. Wskazano także na obserwowaną przez niektórych autorów zależność występowania pasożytów od dynamiki sezonowej występowania ich żywicieli.

19

Species density obtained for fish sampled with three seine nets hauled individually towards a stop net or a bank

72%

Penczak T.

Oceanological and Hydrobiological Studies

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2013

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tom 42

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nr 1

20

Littoral zone flora versus quality of Kielecki Bay waters

72%

Rabajczyk A. , Jóźwiak M.

Ecological Chemistry and Engineering. A

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2008

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tom Vol. 15, nr 12

1359-1368

EN

Environmental assessment is largely based on knowledge about tolerance of organisms to different biotope factors. If upper or lower critical point values ale exceeded for specific organisms in relation to environmental factor, according to Shelford's law of tolerance, it causes a withdrawal of organisms from their natural biotope. This feature is used for biomonitoring the environmental condition. Research was performed in the Kielecki Bay area. It is the water basin located in the city zone of Kielce. It was formed by closing the Silnica River valley by weir at 8 km of the river course. Państwowa Komunikacja Samochodowa (State Motor Transport Company), "Metalowiec" Allotments and City Road Administration in Kielce are users of the bar water, which determines the usage of the areas around the basin for recreational, housing and industrial purposes. Additional loads for Kielecki Bay ale the nearby located class one road which runs towards the city of Lodz and is a source of transportation pollution as well as the city swimming pool which discharges chlorinated water to the basin. The basin is supplied by watercourse, which receives municipal wastewater nom the village of Maslow located near Kielce. The amount and diversity of organic and inorganic compounds getting into the basin influences heavy pollution of Bay waters. Methods used in biomonitoring and instrumental monitoring were applied in this research. A growth of flora typical of basins with unclassified waters containing a huge amount of heavy metals and biogens is a result of human activity. The basin was classified as a dystrophic type. The conducted research shows that anthropogenic influence on the basin should be limited. The research may be also used for correcting the spatial planning solutions.

PL

Diagnoza stanu środowiska w dużej mierze korzysta z wiedzy o tolerancji organizmów na różne czynniki biotopowe. Przekroczenie wartości górnego lub dolnego punktu krytycznego dla określonego organizmu w odniesieniu do czynnika środowiska, zgodnie z prawem tolerancji Shelforda skutkuje wycofaniem się organizmu z charakterystycznego dla niego biotopu. Tę właściwość wykorzystuje się do biomonitoringu stanu środowiska przyrodniczego. Badania przeprowadzono na obszarze Zalewu Kieleckiego. Jest to zbiornik wodny w granicach miasta Kielce, który został utworzony poprzez zamknięcie doliny rzeki Silnicy jazem, na jej 8 km. Użytkownikami wody ze zbiornika są Państwowa Komunikacja Samochodowa, Ogródki Działkowe "Metalowiec" oraz Miejski Zarząd Dróg w Kielcach, co sprawia, że tereny wokół zbiornika zagospodarowane są zarówno na cele rekreacyjne, mieszkaniowe, jak i gospodarcze. Dodatkowymi obciążeniami dla Zalewu jest przebiegająca w bezpośrednim sąsiedztwie droga krajowa w kierunku Łodzi, będąca źródłem zanieczyszczeń komunikacyjnych oraz basen miejski, z którego wprowadzana jest do zbiornika woda chlorowana. Zbiornik zasilany jest ciekiem wodnym stanowiącym odbiornik zanieczyszczeń komunalnych z miejscowości Masłów, położonej w pobliżu Kielc. Ilość oraz różnorodność związków zarówno organicznych, jak i nieorganicznych dostających się do zbiornika powoduje, że wody Zalewu są bardzo zanieczyszczone. W badaniach wykorzystano metody stosowane w biomonitoringu oraz w monitoringu instrumentalnym. Efektem działalności człowieka jest rozwój flory charakterystycznej dla zbiorników o wodach pozaklasowych zawierających dużą ilość metali ciężkich oraz biogenów. Zbiornik zaklasyfikowano jako dystroficzny. Wykonane badania wskazują na konieczność ograniczenia antropogennego oddziaływania na zbiornik. Mogą również być wykorzystane do skorygowania rozwiązań planistycznych związanych z zagospodarowaniem terenu.