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@article{1363974,
author = {Coufalík, Pavel and Prochazková, Petra and Zvěřina, Ondřej and Trnková, Kateřina and Skácelová, Kateřina and Nývlt, Daniel and Komárek, Josef},
article_location = {Warszawa},
article_number = {4},
doi = {http://dx.doi.org/10.1515/popore-2016-0025},
keywords = {Antarctica; cyanobacteria; algae; nutrients},
language = {eng},
issn = {0138-0338},
journal = {Polish Polar Research},
title = {Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica},
volume = {37},
year = {2016}
}
TY - JOUR
ID - 1363974
AU - Coufalík, Pavel - Prochazková, Petra - Zvěřina, Ondřej - Trnková, Kateřina - Skácelová, Kateřina - Nývlt, Daniel - Komárek, Josef
PY - 2016
TI - Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica
JF - Polish Polar Research
VL - 37
IS - 4
SP - 477-491
EP - 477-491
PB - Państwowe Wydawnictwo Naukowe
SN - 01380338
KW - Antarctica
KW - cyanobacteria
KW - algae
KW - nutrients
N2 - The lakes and watercourses are habitats for various communities of cyanobacteria and algae, which are among the few primary producers in Antarctica. The amount of nutrients in the mineral-poor Antarctic environment is a limiting factor for the growth of freshwater autotrophs in most cases. In this study, the main aim was to assess the availability of mineral nitrogen for microorganisms in cyanobacterial mats in James Ross Island. The nitrate and ammonium ions in water environment were determined as well as the contents of major elements (C, N, P, S, Na, K, Ca, Mg, Al, Fe, Mn) in cyanobacterial mats. The molar ratios of C:N, C:P and N:P in mats were in focus. The growth of freshwater autotrophs seems not to be limited by the level of nitrogen, according to the content of available mineral nitrogen in water and the biogeochemical stoichiometry of C:N:P. The source of nutrients in the Ulu Peninsula is not obvious. The nitrogen fixation could enhance the nitrogen content in mats, which was observed in some samples containing the Nostoc sp.
ER -
COUFALÍK, Pavel, Petra PROCHAZKOVÁ, Ondřej ZVĚŘINA, Kateřina TRNKOVÁ, Kateřina SKÁCELOVÁ, Daniel NÝVLT a Josef KOMÁREK. Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica. \textit{Polish Polar Research}. Warszawa: Pa\'nstwowe Wydawnictwo Naukowe, roč.~37, č.~4, s.~477-491. ISSN~0138-0338. doi:10.1515/popore-2016-0025. 2016.
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