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1

Massive occurrence of the alien invasive species Pleodorina indica (Volvocales, Chlorophyta) in a reservoir located in urban areas of Central Poland

Knysak P., Żelazna-Wieczorek J.

Oceanological and Hydrobiological Studies

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2017

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Vol. 46, No. 1

116--122

EN

Pleodorina indica (Iyengar) H. Nozaki is a rare species from the Volvocaceae family (Chlorophyta, Volvocales), which naturally occurs in aquatic ecosystems of the tropical climate zones. This is the first record of this species I in Poland in a flow-through man-made reservoir on the Olechówka River in Łódź. The sampling site of P. indica in Łódź is the northernmost site in Europe. Among other records, the species has been also reported from Austria in 1996 and the Czech Republic in 2003. During the summer of 2015, abundant occurrence of this species was observed at the sampling site, at extremely high air and water temperatures. Physical parameters in the reservoir and the duration of the P. indica bloom were measured. In addition, morphological features of the species were observed with the use of light and confocal microscopy.

2

Ecological preferences of freshwater Ulva flexuosa (Ulvales; Ulvophyceae) : development of macroalgal mats in a Tulce fishpond (Wielkopolska Region, Poland)

Rybak A. S.

Oceanological and Hydrobiological Studies

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2016

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Vol. 45, No. 1

100--111

EN

Research on the diversity of thalli and mats built by freshwater Ulva flexuosa, as well as the impact of abiotic factors on the development and distribution of Ulva mats, was conducted from May to August 2013. The study describes the dynamics of “green tides” formation by U. flexuosa. The study assessed abiotic factors that may influence the colonization and the growth of Ulva populations in freshwater systems. The results are of major importance to the trade and industry sectors. In total, eleven environmental parameters were included in the analysis. The most important environmental parameters characterizing the Ulva sites are sodium chloride levels and conductivity. High values of pH inhibited the development of Ulva, leading to a lower percentage of mature thalli in the mats. The water depth was positively correlated with an increase in the density of thalli in the mats and the average thallus length. Significant differences were identified between the concentrations of nitrates under and outside the Ulva mats. Concentrations of nitrate under the Ulva thalli were always lower.

3

Some rare and interesting green algae (Chlorophyta) from subalpine Tatra lakes (High Tatra Mountains, Poland)

Lenarczyk J., Tsarenko P.

Oceanological and Hydrobiological Studies

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2013

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Vol. 42, No. 3

225--232

EN

Five green algal taxa rarely occurring in the world were found in subalpine lakes of the High Tatra Mountains in Poland. These are Actinastrum gracillimum G.M. Sm. var. elongatum (G.M. Sm.) Fott, Monoraphidium tatrae (Hindák) Hindák, Pediastrum braunii Wartm. in Wartm. et Schenk, Scotiella tuberculata Bourr. var. tuberculata and Thelesphaera olivacea (Beck-Mannag.) Fott. The taxa are described and illustrated with light micrographs and drawings. A review of their distribution in the world is presented.

4

Algae assemblages in the Rąbień peat-bog reserve

Rakowska B., Sitkowska M.

Oceanological and Hydrobiological Studies

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2010

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Vol. 39, No.2

63-74

EN

Due to anthropogenic stress, the character of the Rąbień peat-bog reserve is changing, and large parts of it are being transformed into a transitional peat-bog. During more than 23 years of research, considerable changes have been noted in water pH (from 4.63 to 6.64), trophic status, and the species composition of algae. The subject of the research carried out in 2004-2005 were Bacillariophyceae and Chlorophyta. A decrease was observed in the number of species characteristic of high peat-bogs in favor of alkaliphilic species and those occurring in eutrophic waters.

5

The distribution of green algae species from the Ulva genera (syn. Enteromorpha, Chlorophyta) in Polish inland waters

Messyasz B., Rybak A.

Oceanological and Hydrobiological Studies

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2009

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Vol. 38, No.1

121-138

EN

Marine algae in inland waters in Poland have been rarely recorded. The distribution of 5 species and 1 subspecies of the Ulva genus (syn. Enteromorpha, Chlorophyta) observed in different inland aquatic ecosystems is reported. The algal distribution was established on the basis of the available literature, unpublished material, and oral reports. Information about the algal morphology and habitat conditions, from all of the 58 reported locations of ulvas in Poland, were assimilated and are presented here. The most widespread species of Ulva in inland waters in Poland was U. intestinalis (syn. Enteromorpha intestinalis) reported at 34 sites, while the rarest species was U. paradoxa (syn. Enteromorpha paradoxa), recorded at 2 sites. Species of Ulva have been reported at a range of inland aquatic ecosystems, but most commonly in lakes and small water-courses, such as ditches, channels and creeks. Most of the reported sites of penetration of Ulva (Enteromorpha) inland are concentrated in northwestern and central Poland.

6

Biosorpcja metali ciężkich. Cz. III. Glony

Duda-Chodak A., Kubica M., Tarko T.

Laboratorium - Przegląd Ogólnopolski

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2008

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nr 12

52--55

PL

Ostatnia, trzecia część artykułu dotyczy możliwości wykorzystania glonów w procesach usuwania metali ciężkich. Gatunki należące do wszystkich trzech omówionych poniżej gromad (Rhodophyta, Chlorophyta, Phaeophyta) wykazują duże zdolności sorpcji metali. Posiadają one wszelkie wymagane cechy konieczne do efektywnego przeprowadzania biosorpcji, co uzasadnia konieczność kontynuowania badań nad tą grupą organizmów.

EN

The third and final part of the article concerns the possibilitities of algae usage in the process of removal of heavy metals. Species belonging to all three of the classes mentioned below (Rhodophyta, Chlorophyta, Phaeophyta) have proven to possess extensive abilities of absorbing heavy metals. They have all the features required for the occurrence of effective biosorption, which is the reason why research on this group of organisms should be continued.

7

Effect of algae pre-oxidation with chlorine dioxide on their removal by dissolved-air flotation

Jodłowski A.

Environment Protection Engineering

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2001

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vol. 27, nr 3-4

73-87

EN

The dissolved air flotation (DAF) expts. involving pre-oxidn. of algae with ClO2 and alum coagulation were carried out in a bench-scale unit under lab. conditions. Such a procedure allows the removal of chosen green algae (Chlorophyceae) from water. The efficiency of the process under study was related to the parameters of algal particles agglomeration and sepn. Destabilization of algal particles was necessary to provide favorable conditions for microagglomerate attachment to the collectors (air bubbles). The parameters of agglomeration can be itemized as follows: pre-oxidant (ClO2) and coagulant (alum) doses, pH, duration and rate of mixing during flocculation. The parameters of sepn. comprised recycle ratio and satn. pressure. DAF allows collisions between the destabilized particles and air bubbles and simultaneously reduces flocculation periods. DAF preceded by pre-oxidn., alum coagulation and flocculation of algae produced clear water with low algal content at significantly limited coagulant doses.

PL

Przeprowadzono doświadczenia nad usuwaniem zielenic (Chlorophyceae) z wody metoda flotacji ciśnieniowej obejmując ich wstępne utlenianie dwutlenkiem chloru i koagulację siarczanem glinu. Badania prowadzono w laboratorium, używając instalacji porcjowej. Skuteczność tej metody była związana z parametrami procesów aglomeracji i separacji. Aby stworzyć warunki sprzyjające przyłączaniu się mikroaglomeratów do kolektorów (pęcherzyków powietrza), należy zdestabilizować cząstki. Parametry aglomeracji to: dawki wstępnego utleniacza (ClO2) i koagulantu (siarczanu glinu), pH, jak również czas i intensywność mieszania podczas flokulacji, a parametry separacji to: stopień recyrkulacji i ciśnienie saturacji. Flotacja ciśnieniowa umożliwia zderzenia pomiędzy zdestabilizowanymi cząstkami i pęcherzykami powietrza, skracając długi czas flokulacji. Dzięki flotacji ciśnieniowej poprzedzonej wstępnym utlenianiem i koagulacją za pomocą siarczanu glinu otrzymuje się klarowną wodę, która zawiera tylko niewielką ilość glonów przy znacznie ograniczonych dawkach koagulantu.

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Cyanophyta blooms in Koronowski Reservoir in the background of environmental conditions

Wiśniewska M.

Oceanological Studies

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1998

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Vol. 27, No. 1

45-52

EN

On the basis of floristic analysis, the occurrence of 132 taxons of plankton algae in Koronowski Reservoir was determined. The spring and autumn plankton was dominated by diatoms, while summer plankton by blue-green algae. The species composition, structure of the abundance of algae and concentration of chlorophyll as well as physicochemical conditions of water suggested a highly eutrophic character of this reservoir with a starting expansion of blue-green algae, mainly species considered to be toxic.