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1

Diel vertical distribution of zooplankton in Piaseczno Lake (Wdecki Landscape Park) – II. Rotifera

100%

Grzegorz G. , Klimaszyk P. , Kuczyńska-Kippen N.

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2006

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tom Vol. 35, No.1

29-37

EN

Vertical distribution of chosen species of Rotifera was studied in Piaseczno Lake, during a water stagnation period, in the summer of 2004. Environmental factors, such as temperature, dissolved oxygen and water transparency in the whole water column were measured. The presence of a total of 45 species of Rotifera was found. The analysis of the diel vertical distribution of the examined species of rotifer communities revealed differentiated models. Diel vertical migrations were observed in the case of Gastropus stylifer, Asplanchna priodonta and Trichocerca similis. The remaining species (Kellicottia longispina, Polyarthra dolichopter and P. vulgaris) did not undergo migrations, they remained within a certain water layer throughout the day and night. These differences in the diel behaviour of particular species of rotifers may be mostly dependent on particular ecological requirements and different forms of predation caused by invertebrate and young fish predators.

2

Spatial distribution of rotifers (Rotifera) in monospecies beds of invasive Vallisneria spiralis L. in heated lakes

100%

Ejsmont-Karabin J. , Hutorowicz A.

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2011

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tom Vol. 40, No.4

71-76

EN

Species abundance and richness of rotifer communities occupying monospecies beds of Vallisneria was studied in Lake Licheńskie included in the open cooling system of heat and power stations. Differences were found in rotifer numbers, species composition and diversity between sampling points within the same location and between the locations. Factors that seem to be responsible for the high diversity of rotifer communities inhabiting Vallisneria beds are: large-scale horizontal diversity (between macrophyte patches), small-scale horizontal diversity (within patches) and the high vulnerability of Vallisneria epiphyton to disturbances caused by wave action.

3

Epizoic communities of Rotifera on freshwater bivalves

88%

Bołtruszko J. S.

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2010

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tom Vol. 39, No.4

75-82

EN

The species structure of epizoic communities of Rotifera was analyzed on three species of freshwater bivalves: Anodonta anatina (Linnaeus), A. cygnea (Linnaeus) and Unio tumidus (Philipsson) from lakes and rivers of north-eastern Poland. Epizoic rotifer communities were abundant and relatively rich in species. The communities were mostly built of common littoral species, like Colurella uncinata, Lecane flexilis, Lepadella quadricarinata, Ptygura melicerta. They were accompanied by species typical for pelagic waters (e.g. Trichocerca pusilla, T. similis). Bivalves inhabiting outflows of rivers from Knyszyn Forest had the most diversified and abundant epizoic communities. Large differences were also observed as regards particular species occurrence in different habitats. Maximum numbers of Ptygura melicerta living on the surface of bivalves from rivers accounted for 150 individuals per bivalve specimen, whereas those living on animals from lakes - up to 10 individuals. All studied bivalves were colonized by very large numbers of bdelloids.

4

Planktonowe wrotki [Rotifera] zbiornika zaporowego w Kozlowej Gorze [Gorny Slask]

75%

Bielanska-Grajner I.

Natura Silesiae Superioris. Centrum Dziedzictwa Przyrody Górnego Śląska

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2002

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tom 06

115-120

5

Wrotki jako bioindykatory zanieczyszczenia wod powierzchniowych Jeziora Trzebidzkiego stadiami dyspersyjnymi perwotniakow jelitowych

75%

Kuczynska-Kippen N. , Majewska A. C. , Graczyk T. K. , Slodkowicz-Kowalska A. , Werner A. , Nowosad P.

Biuletyn Parków Krajobrazowych Wielkopolski

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2004

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nr 10

186-187

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Vertical microzonation of psammon rotifers (Rotifera) in the psammolittoral habitat of an eutrophic lake

63%

Ejsmont-Karabin J.

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2008

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tom Vol. 56, nr 2

351-357

EN

Hydroarenal is a layer of submerged sands along the edge of a lake. Organisms living in interstitial spaces of this zone create a community called hydropsammon. Microzonation and seasonal dynamics of hydropsammon rotifers were studied in psammolittoral of deep, eutrophic Lake Mikołajskie (North-eastern Poland) in 2005. An aim of the study was to test the hypothesis that the top 0.5 cm of bottom sands (=epihydroarenal) plays a role of a transitory microzone between adjacent water layer and a deeper 1.5 cm layer of sands (=endohydroarenal). Sampling cores were taken at a station 1.5 m from water's edge once or twice a month since April till October 2005. Three samples were taken: 5-cm thick water layer (AWL - adjacent water layer), 0.5-cm thick layer of water and sand from the transitory level (EPIH - epihydropsammon) and 2-cm thick slice of sand (ENDOH - endohydropsammon). From 94 species found in the lake 15% were restricted to AWL, 20% to endohydropsammon and only 5% to epihydropsammon. From 57 species found in epihydroarenal 52 (91%) were common with neighboring microlayers, i.e. AWL and endohydroarenal. The highest rotifer densities were noted in the endohydroarenal zone if expressed in area units. However, the rotifer densities in epipsammon if expressed in the same volume of occupied environment were ca 40 times higher than in adjacent water and about twice of those noted in endohydroarenal. This may suggest that epihydroarenal plays a role of both a transitory zone and a refugium for animals from adjacent water layer. Reasons for this phenomenon are still not clear.

7

Daily changes of the vertical micro-distribution of Rotifera in lake psammolittoral

63%

Ejsmont-Karabin J.

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2008

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tom Vol. 56, nr 4

717-722

EN

Studies were conducted in littoral sand deposits of a eutrophic, deep lake (Lake Mikołajskie, Masurian Lakeland, Poland) in aim to test the hypothesis that epihydroarenal (the most upper layer of sand deposits) may play a role of a refuge from visual predators for rotifers from adjacent water layer. However, a comparison of the daily vertical distribution of the rotifer community structure and densities in microlayers of the lake psammolittoral, i.e. adjacent water layer (5.0-0.0 cm), epihydroarenal (0-0.5 cm) and three microlayers of endohydroarenal (0.5-1.0 cm, 1.0-1.5 cm and 1.5-2.0 cm) revealed a lack of up-and-down vertical migrations of the animals. During day and night hours, both on 5/6 and 11/12 July, rotifers were concentrated in epihydroarenal. In all cases 64 to 85% of rotifer community inhabited this layer, whereas up to 4% occurred in adjacent water layer. Large and permanently renewed food resources (algae and bacteria) in the most upper layer of sand deposits form a very thin layer that can be called "a canteen". This may explain permanent concentration of rotifers in the layer.

8

Spatio-temporal distribution, abundance and diversity of zooplankton community structure in River Shasha, Southwestern Nigeria

63%

Adedeji A. A. , Adesakin T. A. , Oni T. M. , Oyebamiji S. P. , Olowogboyega V. T.

World News of Natural Sciences

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2019

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tom 24

299-321

EN

This study was carried-out to investigate the abundance and diversity of zooplankton in River Shasha, Southwest Nigeria. The zooplankton community constitutes an important component in the faunal composition of the water body. Samples were collected bi-monthly between February 2006 to February 2008, with a mind of capturing various seasons in the period of study, at two sampling stations (Ipetumodu and Edun-abon) established along River Shasha. A total number of 54 zooplankton species were identified, comprising of five classes, namely Rotifera (29 species), Ostracoda (8 species), Arthropoda (5 species), Copepoda (5 species), Protozoa (4 species) and Cladocera (3 species). The most abundant species were Brachionus, Lecane and Keratella recorded the highest distribution among the zooplankton observed during the sampling period. Among the Rotifers, Branchions patulus and Filina opoliensis were found abundant. Holopedium amazonicum and Scapholebris armata were predominant among the Cladoceras. Among the Copepods the dominant species was Ectocyclops phaleratus and Hemicypris ovate and Cypris subglobosa among Ostracoda. Among the Protozoa, Diffugia sp and Vorticella sp were observed. Ceratopogonid sp. was most dominant among Arthropoda. The density of zooplankton population was maximum during dry season (158702 Org/L) and minimum (12402 Org/L) during rainy season due to the different environmental conditions of the water bodies. The overall mean abundance of zooplankton population was in the following order: Rotifera > Protozoan > Arthropoda > Copepoda > Cladocera >Ostracoda. The few species of Zooplankton identified in River Shasha may reflect the moderate level of limit nutrient and there is need for regular monitoring of the waterbody to avoid the excess input of nutrients from domestic and agricultural waste that could lead to eutrophication.

9

Wrotki (Rotifera) planktonowe w zapadlisku na rzece Łąkawce (Bojszowy - Jedlina)

63%

Bielańska-Grajner I. , Niesler A.

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2002

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tom Vol. 28, no. 4

81-88

PL

W okresie od marca do listopada 2000 roku badano wrotki planktonowe w zapadlisku Bojszowy -Jedlina. Stwierdzono bogatą faunę Rotifera w tym zbiorniku. Wśród 71 taksonów występował nowy dla Górnego Śląska gatunek Erignatha clastopis (Gosse). Skład jakościowy zgrupowania wrotków w tym zapadlisku różnił się od składu wrotków w innych badanych zapadliskach. Struktura dominacji i stałości zgrupowania wskazywała na zrównoważony charakter pomimo oznak wysokiej trofii.

EN

From March to November 2000 planctonic Rotifera of the collapse pond Bojszowy - Jedlina were studied. Rich fauna of Rotifera (71 taxons) was recorded. One new for Silesia Region species Erignatfia clas-topis (Gosse) was found. The qualitative composition of the Rotifera community in that pond differed from other investigated collapse ponds. In spite of high eutrophy domination and constance structure indicated staid character of the Rotifera community in the Bojszowy - Jedlina pond.

10

Long-term changes in the abundance and structure of the community of planktonic Rotifera in a humic lake, as a result of liming

63%

Ejsmont-Karabin J.

Ekologia Polska

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1996

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tom 44

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nr 1-2

39-51

11

Zmiany w sestonowych zespołach wrotków występujących w potoku Ślepiotka poniżej spływu wód ze stawu śródleśnego

51%

Niesler A.

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2001

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tom Vol. 27, no. 4

129-141

PL

W okresie od marca do listopada 1999 r. badano zespoły Rotifera w potoku Ślepiotka, zanieczyszczonym ściekami bytowo-komunalnymi. Badano również faunę wrotków małego stawu śródleśnego, którego wody odprowadzane byty do potoku. Dzięki dokładnej analizie ilościowej oraz jakościowej stwierdzono, ze dopływ wody ze stawu spowodował trwały wzrost bogactwa gatunkowego, zagęszczenia oraz stabilności w zespołach wrotków w potoku Ślepiotka poniżej miejsca dopływu. Wyniki analiz fizyko-chemicznych wody potwierdziły dane biologiczne o pozytywnym wpływie wód stawu na faunę i jakość wody w potoku.

EN

The studies concerned qualitative and quantitative analysis of seston Rotifera communities of Slepiotka stream polluted with communal sewages. The samples were also taken from the small, inforest pond confluence with the stream. The studies were carried out from March to November 1999. The water from the pond, which flew down into the stream, had a good influence on the Rotifera communities living there. The stable increase in species diversity, abundance and stability of Rotifera communities of Slepiotka stream below the inflow was recorded. The physic-chemical analysis confirmed the favorable influence of the pond on Slepiotka stream water quality.

12

Rotifera communities associated with invasive Vallisneria spiralis L. (Hydrocharitaceae) versus native macrophytes in the lakes heated by power stations (Konin lakes, W. Poland)

51%

Ejsmont-Karabin J. , Hutorowicz A.

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2011

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tom Vol. 59, nr 3

569-576

EN

The role that invasive Vallisneria spiralis L. plays in determining the species richness of the rotifer community was examined in the littoral zone of two heated (by power stations) lakes near Konin (W. Poland) (Lake Licheńskie - area 153.6 ha, max. depth 13.3 m and Lake Ślesińskie - area 148.1 ha, max. depth 25.7 m). Vallisneria spiralis is a thermophilic and vegetative reproducing species which has been recorded in the lakes since the 1990s. It spreads very quickly in the lakes, forming monospecific, dense beds which, force out all other submerged vegetation. Samples were collected in August 2004 on 8 littoral stations of Lake Licheńskie and Ślesińskie. Five-liter samples of water (plankton species) and macrophytes (epiphytic species) were elaborated separately. An analysis of the taxonomic structure of rotifer communities inhabiting single-species Vallisneria beds and mixed-species (Vallisneria plus other macrophyte species) beds showed that both communities were relatively rich in species and similar in terms of species composition. A total of 100 species of Monogononta were identified. Single-species Vallisneria beds were inhabited by 77 species, whereas 82 species were found at stations with mixed vegetation. Species diversity was relatively high in both types of macrophyte assemblages. Numbers of rotifer species inhabiting the single-species Vallisneria beds are among the average values observed in a littoral zone rich in macrophyte species from lakes of different morphometry and trophic state. The above observations confirm part of the conclusions from literature that invasions by new plant species do not always lead to a decline in the habitat value for native animals. Otherwise, the invaded plant creates the habitat easily colonized by the native plankton and epiphytic invertebrates.

13

Wrotki [Rotifera] planktonowe rzek zachodniej Lubelszczyzny

51%

Demetraki-Paleolog A.

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2007

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nr 317

1-122

14

Does invasion of Vallisneria spiralis L. promote appearance of rare and new rotifer (Rotifera) species in littoral of the lakes heated by power station (Konin lakes, W. Poland)?

51%

Ejsmont-Karabin J.

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2011

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tom Vol. 59, nr 1

201-207

EN

Large-scale human-caused ecosystem disturbances may create new habitats. A good example may be long-lasting disturbances in five lakes (area from 148 to 379 ha, max. depth from 3 to 38 m) integrated into the cooling system of the power plants near Konin (52[degrees]17.8'-52[degrees]23.3N, 18[degrees]14.4'-18[degrees]20.7'E, West Poland). In the middle of the 1990s Vallisneria spiralis began to colonize littoral zone of three of lakes and in 2002 it appeared also in fourth one. This species formed dense patches and almost completely displaced other submerged macrophytes. An aim of the study was to test a hypothesis that the appearance of rare and new for Polish fauna rotifer species might be a result of changes in littoral habitats of these lakes particularly caused by the invasion by Vallisneria spiralis. Studies were carried out in the years 2004-2006 on 3-6 littoral stations in each lake. Five-liter samples of water with macrophytes were collected from a center of macrophyte beds. Plankton (free-swimming) and epiphytic (connected with macrophyte surface) samples were elaborated separately. As many as 167 monogonont species were recorded during the three-years. studies. From among them 6 species were new in Polish fauna. These were: Asplanchnopus hyalinus Harring, Beauchampia crucigera (Dutrochet). Lecane inopinata Harring & Myers, Lecane shieli Segers et Sanoamuang, Lecane undulata Hauer and Lepadella apsida Harring. The species are eurythermic or warm-stenothermic. Species new to the rotifer fauna of Poland were not numerous as they usually constituted less than 2% of the total density of rotifers. Thus, although the hypothesis that rare and new for Polish fauna rotifer species may appear in the littoral habitats of the heated Konin lakes was confirmed, it was also clear that the colonization of the habitats by rotifer invaders did not lead to their domination in the rotifer communities.

15

Ugrupowania zooplanktonu rezerwatu 'Jezioro Trzebidzkie' - 2003

51%

Kuczynska-Kippen N.

Biuletyn Parków Krajobrazowych Wielkopolski

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2004

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nr 10

169-185

16

Abundance and structure of rotifer community in a humic Lake Smolak twenty years after the experimental mineral fertilisation

51%

Ejsmont-Karabin J.

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tom 06

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nr 2

233-245

17

Wrotki na Gornym Slasku

50%

Bielanska-Grajner I.

Przyroda Górnego Śląska

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2003

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nr 32

6