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Biodiversity of rotifers in urban water reservoirs of Southern Poland

Pociecha A., Wilk-Woźniak E., Mróz W., Bielańska-Grajner I., Gadzinowska J., Walusiak E.

Oceanological and Hydrobiological Studies

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2015

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Vol. 44, No. 3

335--342

EN

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 that the diversity of rotifers communities in the studied reservoirs was related to the concentration of magnesium and calcium, and to water conductivity.

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The changes in managed fir forest in Beskid Mts due to forest management after 11 years

Chmura D., Salachna A, Bochenek W

Journal of Ecological Engineering

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2013

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Vol. 14, nr 1

1--6

EN

New phytosociological studies on permanent study plot (40 ´ 40 m) divided into 16 subplots in the managed forest were conducted in the upper part of basin of Bystrzanka (Beskid Niski Mts, SE Poland). The aim of the research was to determine the direction of changes in the Rubus hirtus-Abies alba community in the vicinity of the forest where forest management treatments are applied. It was recorded that the total number of species increased from 52 in 2000 to 80 in 2011. The DCA showed significant changes in species composition and the cover of species. Among others, the increase of forest edge species (epilobisation) and ruderal species (therophytization) and first of all the increase of meadow was observed. The structure of the community also changed; the mean cover of shrub species decreased.

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The changes in managed fir forest in Beskid Mts due to forest management after 11 years

Chmura D, Salachna A, Bochenek W

Inżynieria Ekologiczna

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2013

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Nr 33

21--28

EN

The new phytosociological studies on permanent study plot (40 m x 40 m) divided into 16 subplots in managed forest were conducted in upper part of basin of Bystrzanka (Beskid Niski Mts, SE Poland). The aim of the research was to determine the direction of changes in the community Rubus hirtus-Abies alba community in the vicinity of forest where forest management treatments are applied.. It was recorded that total number of species increased from 52 in 2000 to 80 in 2011. The DCA showed significant changes in species composition and cover of species. Among others, the increase of forest edge species (epilobisation) and ruderal species (therophytization) and first of all the increase of meadow was observed. The structure of the community also changed; the mean cover of shrub species decreased.

PL

Przeprowadzono powtórne badania fitosocjologiczne na powierzchni stałej o wymiarach 40 x 40 m podzielonej na 16 poletek w lesie gospodarczym w górnej części zlewni potoku Bystrzanka niedaleko miejscowości Szymbark. Celem niniejszej pracy było określenie charakteru zmian w zbiorowisku Rubus hirtus-Abies alba w sąsiedztwie lasu gdzie prowadzone są prace leśne. Stwierdzono, że od 2000 r. nastąpił wzrost liczby gatunków z 52 do 80 w 2011. Analiza DCA wykazała znaczne różnice w składzie gatunkowym i pokryciu gatunków. Odnotowano m.in. wzrost udziału gatunków porębowych (epilobietyzacja) i ruderalnych (terofityzacja) oraz przede wszystkim duży wzrost udziału gatunków łąkowych. Struktura zbiorowiska uległa również zmianie; zmniejszyło się średnie pokrycie gatunków tworzących warstwę krzewów.

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Vascular plants versus mosses in lakeland and riverine mires in two regions of eastern Poland

Sugier P., Czarnecka B.

Polish Journal of Ecology

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2010

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Vol. 58, nr 4

635-644

EN

Our research was conducted in two different mire habitats . in the minerotrophic and ombrotrophic mires adjoining the lakes (LM) of the Łęczna-Włodawa Lakeland and in the eutrophic and calcium-rich mires of the river valleys (RM) of the Roztocze Highlands region (both study regions in Eastern Poland). The study aimed to evaluate (1) the position of mire phytocoenoses in the environmental gradient - from minerotrophic to ombrotrophic ones, (2) the influence of the species and life-form composition of plant communities on the density of bryophytes, and (3) the quantitative and sociological relations between the density of vascular plants and bryophytes. Phytosociological releves (180) were made in six lakeland mires and in four river valleys. The area of each phytosociological releves (16-25 m2) represented species composition and vertical structure of communities. In the study of the relation vascular plants-bryophytes we took into consideration the following parameters: species abundance, cover of particular plant layers (trees, shrubs, herbs, bryophytes), and the number of species in particular life-form groups. In the LM the cover of particular layers was correlated negatively with the abundance of Sphagnum mosses. Betula pendula, B. pubescens and Frangula alnus overgrowing the LM affect negatively the abundance of some peat mosses. Less distinct relations were found between the tree density and bryophyte cover in the RM, but there is a positive correlation between the shrub cover and its predominant species - F. alnus - and the abundance of Polytrichum commune. Taking into account the relations between the herbaceous cover and the abundance of bryophytes, the dependencies are also less pronounced in the RM phytocoenoses. A negative effect of the herbaceous cover and its species richness on the abundance of P. commune was observed, as well as positive relation between the number of herbaceous species and the abundance of Calliergonella cuspidata. In the LM phytocoenoses, a negative correlation was found in the case of S. palustre, while in the case of Aulacomnium palustre and S. cuspidatum the relations were positive. Among herbaceous plants of LM habitats the biggest number of statistically significant correlations were observed for abundance of Carex lasiocarpa and different bryophytes, while in the RM habitats the correlations between the abundance of bryophyte and vascular plant layers are less distinct.