Papers by Irena Bielańska-grajner
Oceanological and Hydrobiological Studies, 2015
Rotifer diversity was studied in three different types of artificial water bodies situated in one... more Rotifer diversity was studied in three different types of artificial water bodies situated in one of the largest cities in Poland. The bodies of water were as follows: a fountain in a city park, the Nowa Huta dam reservoir, and the Bagry gravelpit. The lowest number of rotifer species (23) was noted in the urban fountain, and the highest (36) in the Bagry gravel-pit lake. Rotifers’ communities in the investigated water reservoirs showed different levels of diversity and density. The most numerous species in the dam reservoir was Trichocerca similis (2511 ind. l-1) and in the Bagry gravel-pit lake was Polyarthra dolichoptera (2634 ind. l-1). However, the most abundant species in the fountain was Brachionus urceolaris (863 ind. l-1). The highest values of Shannon and evenness diversity indices were found in the Bagry gravel-pit lake (H’ = 2.521, J’ = 0.783), while the lowest in the urban fountain (H’ = 0.568, J’ = 0.258). The DCA analysis (Detrended Correspondence Analysis) showed tha...
Knowledge & Management of Aquatic Ecosystems, 2019
The research was carried out in the Bolina River, which is the most anthropogenically saline rive... more The research was carried out in the Bolina River, which is the most anthropogenically saline river in Europe, from 2017 to 2018. This river flows through the highly industrialised and urbanised part of Upper Silesia (Poland). The aims of our survey were to analyse the structure of the rotifer communities and to determine the most important environmental factors that have a significant impact on their structure in a river under the influence of underground salty mine water discharge. According to a canonical correspondence analysis (CCA), the rotifer communities in the Bolina River are affected by electrical conductivity, the temperature of the water and the concentration of phosphates. An increase in the electrical conductivity (salinity) in the lower course, which was the result of salty mine water discharge into the Bolina River, was reflected by a decrease in the median density, the number of rotifer taxa and the Shannon–Wiener indexH′. The Bolina River is a unique habitat for ha...
Oceanological and Hydrobiological Studies
The trophic state of ten dam reservoirs was assessed using a zooplankton community. In order to d... more The trophic state of ten dam reservoirs was assessed using a zooplankton community. In order to determine the trophic state of dam reservoirs, we used indices calculated on the basis of density and species structure of Rotifera and Crustacea communities. Samples were collected once during summer 2012 in ten dam reservoirs. The largest numbers of zooplankton taxa were found in a lowland high meso-eutrophic dam reservoir (Koronowski) and the lowest ones in a submontane low eutrophic dam reservoir (Lubachowski). The trophic state was determined for the investigated dam reservoirs. In the case of the Rotifera community, the percentage of the tecta form in the Keratella cochlearis population and the proportion of high-trophic species in the total species density were the best indices to describe the water trophic status. In the case of the crustacean community, the best indices were the density of Crustacea and the biomass of Cyclopoida. The high value of all indices calculated on the ba...
Mine Water and the Environment
The diversity of rotifers was studied in three artificial water bodies (Azure Lake, Yellow Lake, ... more The diversity of rotifers was studied in three artificial water bodies (Azure Lake, Yellow Lake, and Purple Lake), which were once pyrite mines. The physicochemical parameters and the zooplankton composition of the water were determined. Azure Lake had a pH of 3.4-6.9, conductivity values of 165-194 µS cm − 1 , and low concentrations of sulphate, calcium, magnesium, copper, and iron, while the other lakes had a pH of 2.6-2.9, a conductivity of 1636-3400 µS cm − 1 , and high concentrations of sulphate (up to 2863 mg dm − 3), Cu (up to 2650 µg dm − 3), and Fe (up to 178.3 mg dm − 3). The rotifer community in the lakes comprised 27 taxa (15 in Azure Lake, 13 in Purple Lake and 14 in Yellow Lake). We also found two species that are rarely observed in Poland (Aspelta cincinator and Elosa spinifera), and three species commonly found in acidic water (E. worallii, Cephalodella delicata, and C. hoodi). The types of rotifers in Azure Lake differed from those in the other two lakes. The Shannon-Weaver biodiversity index (H′) was the highest in Purple Lake (H′ = 1.255) and lowest in Azure Lake (H′ = 0.455). The effect of some of the physicochemical parameters on rotifer diversity is discussed.
International Review of Hydrobiology, 2015
To study the biodiversity of rotifera in the Shatt Al-Arab Region, samples were collected with a ... more To study the biodiversity of rotifera in the Shatt Al-Arab Region, samples were collected with a 50μm mesh size plankton net between August and December 2007, from five selected sites in the region. In total, 85 taxa of rotifers were found, 39 of which are newly recorded in Iraq. Nearly all the species recorded in the Shatt Al-Arab region are characteristic for the Palearctic. The exceptions were three species: Dicranophorus dolerus (earlier found only in Nearctic and Oriental regions), Euchlanis lyra (earlier in Afrotropical, Australian, Nearctic and Neotropical regions), Lecane donneri (earlier in Afrotropical, Nearctic and Oriental regions).
Rotifera IX, 2001
The structure of the psammic rotifer community in three ecotonal zones (arenal, interface, eulitt... more The structure of the psammic rotifer community in three ecotonal zones (arenal, interface, eulittoral) of a mesotrophic lake (Lake Piaseczno; Leczna – Wlodawa Lakeland, eastern Poland) was studied in June and September of 1996 and 1997. A total number of 48 taxa, belonging to three different groups of psammon (eupsammon, hygropsammon and hydropsammon), were identified: 6 psammobionts, 16 psammophiles and
Rotifera IX, 2001
Thirty five species of rotifers were found in the psammon of three lakes of differing pH in open ... more Thirty five species of rotifers were found in the psammon of three lakes of differing pH in open water. The largest number of rotifer species and their highest abundance was found in lake Rekowskie which had a slightly acid to neutral water pH. The lowest quantity and the number of rotifers species were observed in the lake with lowest pH. The results suggest that pH is one of the most important factors affecting the number and diversity of psammic rotifers in these lakes.
Limnology, 2014
In spatially heterogeneous habitats, local communities may be shaped by both local biotic and abi... more In spatially heterogeneous habitats, local communities may be shaped by both local biotic and abiotic factors and by regional factors (dispersal of individuals among habitats). In recent years, ecologists have been increasingly interested in measuring how much the structure of local communities is explained by spatial variables and by non-spatial environmental variables. We analysed the effects of biotic and abiotic factors on rotifer communities in 12 anthropogenic water bodies in the Silesian Upland. The studies were conducted in two groups of water bodies which were of differing dimensions: group Aseven water bodies situated very close to each other (between 50 and 500 m), group B-the water bodies from group A as well as 5 other water bodies situated 2 km away, which were at greater distances from each other (about 1-3 km). Apart from this, genetic variation was assessed in 3 populations of Brachionus plicatilis Müller to estimate the level of gene flow between them. A characteristic feature of anthropogenic water bodies is a high variation in environmental conditions, so they are specific and difficult habitats for many organisms. Our study shows that environmental factors played a major role in shaping the local rotifer communities in heterogeneous anthropogenic water bodies with respect to salinity. Results of this study suggest, however, that in neighbouring water bodies, dispersal is very important for maintenance of local species diversity. A medium level of genetic variation between populations of B. plicatilis indicates that gene flow occurs irrespective of the distance between local populations.
Annales UMCS, Biologia, 2008
dependence between occurrence of selected species of psammic rotifers and phytopsammon abundance ... more dependence between occurrence of selected species of psammic rotifers and phytopsammon abundance zależność występowania wybranych gatunków wrotków psammonowych od zagęszczenia fitopsammonu summarY correlations between densities of dominant species of psammic (i.e. sand-loving) rotifers and densities of cyanobacteria and algae were studied on beaches of 16 natural lakes and 11 artificial water bodies. the lakes are located in the bytów, drawsko and wielkopolska lakelands (nw poland), while the artificial water bodies, on the silesian upland (sw poland). the psammon was dominated by diatoms and green algae in lakes of the bytów and drawsko lakelands, and by cyanobacteria and diatoms, in lakes of the wielkopolska lakeland. in artificial water bodies in upper silesia, diatoms and cyanobacteria were the most abundant. rotifer densities differed significantly between zones of the psammolittoral. densities of some rotifer species were significantly correlated with the abundance of chlorophytes. streszczenie badano zależność występowania dominujących gatunków wrotków psammonowych od zagęszczenia sinic i glonów występujących w plażach jezior i zbiorników antropogenicznych. badania prowadzono w 16 jeziorach naturalnych położonych na terenie pojezierzy: bytowskiego, drawskiego i wielkopolskiego oraz w 11 zbiornikach antropogenicznych położonych na terenie wyżyny Śląskiej. w jeziorach pojezierzy bytowskiego i drawskiego w psammonie dominowały okrzemki i zielenice, natomiast w jeziorach pojezierza wielkopolskiego sinice i okrzemki. w zbiornikach sztucznych na terenie Górnego Śląska obserwowano dominację okrzemek i sinic. zagęszczenie
ABSTRACT This volume of Polish Freshwater Fauna Series contains vaste data on Rotifera Bdelloidea... more ABSTRACT This volume of Polish Freshwater Fauna Series contains vaste data on Rotifera Bdelloidea of Polish fauna and details of the specific features for their species, genera, families and orders. An important part of this issue is taxonomic keys for the identification of genera, and an atlas allowing species identification. The monograph is a compendium of the latest theoretical and practical knowledge about Bdelloidea. Volume 32C was written by Dr. hab. Irena Bielańska - Grajner from the University of Silesia in Katowice, prof. Dr. hab. Jolanta Ejsmont - Karabin from the University of Bialystok, Poland and Dr. Natalia Iakovenko of the National Academy of Sciences of Ukraine in Kiev and the University of Ostrava (Czech Republic). These authors devoted themselves to the research of Rotifera Bdelloidea, and gave in detail the anatomy, biology, ecology and taxonomy of these animals; they have also provided a practical guidance on the methodology of research.
Fragmenta Faunistica, 1979
Irena B i e l a ń s k a-G r a jn e b. Nowe dla Górnego Śląska gatunki wrotków (R otatoria) [Z 5 r... more Irena B i e l a ń s k a-G r a jn e b. Nowe dla Górnego Śląska gatunki wrotków (R otatoria) [Z 5 rysunkami w tekście] Literatura dotycząca wrotków Górnego Śląska jak dotąd jest bardzo skąpa. Jedynie w opracowaniach zoopianktonu zbiorników zaporowych w Kozłowej Górze i Przeczycach wykazano ich 37 gatunków (O t t o 1957, C z a p i k 1958a, S t a r z y k o w a 1971, 1972, 1973). Ponadto trzy gatunki podano z mikrobentosu rzeki Kochłówki (N a r l o c h 1975). W czasie badań hydrobiologicznych prowadzonych w trzech zbiornikach: Pławniowice Duże, Gołonóg, Rogoźnik Dolny leżących na terenie Leśnego Pasa Ochronnego Górno śląskiego Okręgu Przemysłowego, określono 63 gatunki wrotków nie podawanych dotąd z tego terenu oraz trzy nowe i l l rzadkich dla fauny Polski. Teren badań i metody Zbiornik Pławniowice Duże, największy z badanych, o powierzchni około 258 ha, powstał przez zalanie wyrobiska popiaskowego wodami potoku Toszec kiego (dopływ Kłodnicy) latem 1974 roku. Przed zalaniem najniższe tereny wyrobiska były wypełnione wodą i miały charakter drobnych stawów. Znaczna jego część pokryta była roślinnością trawiastą. Potok Toszecki niesie do zbior nika wody znacznie zanieczyszczone. W trakcie badań zbiornik był jeszcze na pełniany i nie stwierdzono rozwoju wodnej roślinności naczyniowej. Zbiornik Gołonóg, o powierzchni około 90 ha, podobnie jak zbiornik Pławniowice Duże powstał w wyrobisku po piasko wym.Leży on w dolinie potoku Pogoria, w okolicy Dąbrowy Górniczej. Dno zbiornika było piaszczyste, a w wo dzie brak roślinności naczyniowej. W czasie badań zbiornik był jeszcze w trakcie napełniania. Zbiornik Rogoźnik Dolny ma powierzchnię około 8 ha, a maksymalną głę bokość 2,8 m. Powstał z wyrobiska dawnej kopalni piasku. Leży na północ
Oceanological and Hydrobiological Studies, 2000
The biodiversity of psammon rotifers in Włocławek Reservoir
Limnologica - Ecology and Management of Inland Waters, 2010
The effects of coalmine waters on the structure and the density of planktonic rotifer communities... more The effects of coalmine waters on the structure and the density of planktonic rotifer communities were studied in lakes formed as a result of subsidence due to mining (collapse of underground tunnels). Water samples were collected according to the standard methods from four mining lakes in Tychy-Czu"ów (near Katowice, southern Poland), twice a month from June till October in 2004-2006. Two of the studied lakes were fed by mine waters but differed in flow rate, conductivity, water pH, and the amount of aquatic vegetation. The effects of those factors on the planktonic rotifer communities were analysed. In total, 83 species and forms of rotifers were recorded. The highest diversity of rotifers was found in the lakes with the largest patches of aquatic vegetation, while the highest density of rotifers was observed in the smallest and the most eutrophicated lake. High-water conductivity limited both species diversity and densities of rotifers. The rotifer communities of the studied lakes differed significantly in species diversity, although all the lakes were dominated by eurytopic species: Keratella cochlearis, Brachionus angularis, Brachionus calyciflorus, and Polyarthra sp. In the largest lake, characterized by the lowest conductivity and pH, the superdominant was Polyarthra luminosa, which in the other lakes was rare or absent. Higher conductivity was correlated with a lower density of P. luminosa, Brachionus diversicornis, K. cochlearis f. tecta, and a higher density of B. calyciflorus. In the lakes with the largest patches of aquatic vegetation, conductivity affected the number of dominant rotifer species. Apparently no other abiotic factors (pH, phosphates, and nitrates) affected the rotifer communities.
International Review of Hydrobiology, 2011
Annales UMCS, Biologia, 2008
dependence between occurrence of selected species of psammic rotifers and phytopsammon abundance ... more dependence between occurrence of selected species of psammic rotifers and phytopsammon abundance zależność występowania wybranych gatunków wrotków psammonowych od zagęszczenia fitopsammonu summarY correlations between densities of dominant species of psammic (i.e. sand-loving) rotifers and densities of cyanobacteria and algae were studied on beaches of 16 natural lakes and 11 artificial water bodies. the lakes are located in the bytów, drawsko and wielkopolska lakelands (nw poland), while the artificial water bodies, on the silesian upland (sw poland). the psammon was dominated by diatoms and green algae in lakes of the bytów and drawsko lakelands, and by cyanobacteria and diatoms, in lakes of the wielkopolska lakeland. in artificial water bodies in upper silesia, diatoms and cyanobacteria were the most abundant. rotifer densities differed significantly between zones of the psammolittoral. densities of some rotifer species were significantly correlated with the abundance of chlorophytes. streszczenie badano zależność występowania dominujących gatunków wrotków psammonowych od zagęszczenia sinic i glonów występujących w plażach jezior i zbiorników antropogenicznych. badania prowadzono w 16 jeziorach naturalnych położonych na terenie pojezierzy: bytowskiego, drawskiego i wielkopolskiego oraz w 11 zbiornikach antropogenicznych położonych na terenie wyżyny Śląskiej. w jeziorach pojezierzy bytowskiego i drawskiego w psammonie dominowały okrzemki i zielenice, natomiast w jeziorach pojezierza wielkopolskiego sinice i okrzemki. w zbiornikach sztucznych na terenie Górnego Śląska obserwowano dominację okrzemek i sinic. zagęszczenie
Hydrobiologia, 2005
The effect of sand grain size, porosity and the abundance of algae on the community structure of ... more The effect of sand grain size, porosity and the abundance of algae on the community structure of psammic rotifers was tested in three anthropogenic lakes (Upper Silesia) and compared with three natural ones (West Pomerania). The structure of grain size in the studied beaches of artificial and natural lakes was similar but differences were found in the abundance of algae. The structure of the psammic rotifer community in Upper Silesian lakes was different from natural lakes in West Pomerania. The structure of psammic rotifer communities in anthropogenic reservoirs and lakes (West Pomerania) differed in numbers of species and numbers of psammobiont species, and also diversity index. The most altered structure of rotifer assemblages was observed in the psammon rotifers of the strongly contaminated Dzier_ zno Du_ ze Lake.
Hydrobiologia, 2001
Thirty five species of rotifers were found in the psammon of three lakes of differing pH in open ... more Thirty five species of rotifers were found in the psammon of three lakes of differing pH in open water. The largest number of rotifer species and their highest abundance was found in lake Rekowskie which had a slightly acid to neutral water pH. The lowest quantity and the number of rotifers species were observed in the lake with lowest pH. The results suggest that pH is one of the most important factors affecting the number and diversity of psammic rotifers in these lakes.
In comparison to a substiantial body of information on monogonont Rotifera, there has been relati... more In comparison to a substiantial body of information on monogonont Rotifera, there has been relatively little work on the bdelloid biogeography in Poland. Of the 450 species known in the World only 85 were recorded in Poland and 31-in the Tatra Mountains until 2007. Elaboration of samples taken from different habitats: water, moss, lichens and litter, and tree lichens in the Tatra National Park in July 2008 revealed 23 taxons of Bdelloidea, 14 of which had not previously been found in the rotifer fauna of Poland..
In comparison to a substiantial body of information on monogonont Rotifera, there has been relati... more In comparison to a substiantial body of information on monogonont Rotifera, there has been relatively little work on the bdelloid biogeography in Poland. Of the 450 species known in the World only 85 were recorded in Poland and 31-in the Tatra Mountains until 2007. Elaboration of samples taken from different habitats: water, moss, lichens and litter, and tree lichens in the Tatra National Park in July 2008 revealed 23 taxons of Bdelloidea, 14 of which had not previously been found in the rotifer fauna of Poland..
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Papers by Irena Bielańska-grajner