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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Possible means of overcoming sedimentation by motile sea-picoplankton cells

100%
Pundyak O.
Oceanologia
|
2017
|
tom 59
|
nr 2
A model for overcoming the gravity by sea-picoplankton cells is proposed here. It is based on different means of escaping from potential predators used by cells of co-existing picoplankton species. These different means cause friction anisotropy of motile cells with strong antipredator behavior (AB). According to equations of stochastic movement used in this model for picoplankton cells with strong AB, collocated with high concentration of cells with weak or absent AB, the sedimentation can be considerably overcome.
2

Composition and abundance of picoplankton in the coastal zone of the Gulf of Gdansk

100%
Glawdel M., Mackiewicz T., Witek Z.
Oceanological Studies
|
1999
|
tom 28
|
nr 1-2
3

Comparison of phytoplankton and autotrophic picoplankton populations from a pond's surface and subsurface waters over 24-hour period

100%
Marshall H. G., Burchardt L., Wilk-Wozniak E.
Oceanological and Hydrobiological Studies
|
2005
|
tom 34
|
nr Suppl.3
4

Composition of picocyanobacteria community in the Great Mazurian Lakes: isolation of phycoerythrin-rich and phycocyanin-rich ecotypes from the system - comparison of two methods

84%
Jasser I., Karnkowska-Ishikawa A., Kozlowska E., Krolicka A., Lukomska-Kowalczyk M.
Polish Journal of Microbiology
|
2010
|
tom 59
|
nr 1
21-31
The study showed that the picocyanobacteria community of the Great Mazurian Lakes system (GML) was dominated by phycoerythrin-rich (PE) ecotypes and demonstrated a gradual decrease of the ratio between PE and phycocyanin-rich (PC) ecotypes. The Great Mazurian Lakes offer better conditions for the PE ecotype than for the PC one, despite the considerably high trophic status, probably thanks to low turbidity and attenuation of light in the water column. The successful isolation of PE and PC picocyanobacteria was achieved by two methods: the classic plate method and a modified flow-cytometry method. The modified flow-cytometry method proved to be superior: being more selective for PE picocyanobacteria as well as less time consuming and less laborious. The modifications introduced to the method, such us concentration of cyanobacterial cells by centrifugation to the density required by the flow cytometer, did not hinder the isolation while allowing to skip an intermediate phase of enrichment cultures that had been formerly proposed. The first phylogenetic analyses based on cpcBA operon and 16S rRNA gene demonstrated that picocyanobacteria isolates from GML could, with a high bootstrap support, be grouped into five and four clusters, respectively. Based on a cpcBA-IGS analysis and IGS length the study suggests that at least one of the clusters is new and has not been previously described.
5

Paraluffisphaera tuba gen.n., sp.n. - a newly-discovered eukaryote

84%
Esteban G. F., Clarke K. J., Finlay B. J.
Acta Protozoologica
|
2005
|
tom 44
|
nr 3
6

Seasonal changes in autotrophic picoplankton in a dystrophic lake

67%
Szelag-Wasielewska E.
Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego
|
2004
|
tom 01
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Seasonal changes in phytoplankton on the north-eastern shelf of Kangaroo Island (South Australia) in 2012 and 2013

67%
Balzano S., Ellis A. V., Le Lan C., Leterme S. C.
Oceanologia
|
2015
|
tom 57
|
nr 3
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Distribution of phytoplankton along the thermohaline gradient in the North-Eastern Adriatic channel; winter aspect

67%
Vilicic D., Kuzmic M., Bosak S., Silovic T., Hrustic E., Buric Z.
Oceanologia
|
2009
|
tom 51
|
nr 4
The distribution of phytoplankton and its relation to the hydrographic features in the north-eastern Adriatic was investigated in February 2008. The area of interest included a thermohaline gradient in the channel situated between the coast and the islands lying parallel to the coast. The gradient is controlled by the influx of oligotrophic karstic riverine water at the south-eastern end,subma rine springs in the middle part,an d warmer offshore waters at the north-western end of the channel. The change of temperature and salinity in the estuarine transition zone was accompanied by abundant diatoms and dinoflagellates below the halocline,with dominant chain-forming diatoms (Chaetoceros, Bacteriastrum) in abundances reaching 5×105 cells dm−3. The impact of coastal submarine springs detected by infrared remote sensing resulted in the growth of cyanobacteria in the nitrogen-depleted surface waters. The greater contribution of picoplankton, as well as of nanoplanktonic coccolithophorids and cryptophytes,in the outer channel system indicated their preference for oligotrophic conditions. Flow cytometric counts of nanophytoplankton were 10–30 times greater than inverted microscope counts. Cyanobacteria were about five times more abundant than picoeukaryotes. The study demonstrates how different techniques (remote sensing and in situ investigations) can be useful in understanding the biological and hydrographic set-up in the specific oligotrophic eastern Adriatic coastal environment.
9

Autotrophic picoplankton [APP] in four lakes of different trophic status: composition, dynamics and relation to phytoplankton

67%
Jasser I.
Polish Journal of Ecology
|
2002
|
tom 50
|
nr 3
10

Inventory of the taxonomical composition of the plankton ciliates in the Curonian Lagoon (SE Baltic Sea)

59%
Griniene E., Mazeikaite S., Gasiunaite Z. R.
Oceanological and Hydrobiological Studies
|
2011
|
tom 40
|
nr 4
11

The relationship between autotrophic picoplankton [APP] - the smallest autotrophic component of food web and the trophic status and the depth of lakes

59%
Jasser I.
International Journal of Ecohydrology and Hydrobiology
|
2006
|
tom 06
|
nr 1-4
69-77
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