Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081715%3A_____%2F16%3A00464574" target="_blank" >RIV/68081715:_____/16:00464574 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/16:00092206

Výsledek na webu

<a href="http://dx.doi.org/10.1515/popore-2016-0025" target="_blank" >http://dx.doi.org/10.1515/popore-2016-0025</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/popore-2016-0025" target="_blank" >10.1515/popore-2016-0025</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

—

Projekt

<a href="/cs/project/LM2010009" target="_blank" >LM2010009: Projekt CzechPolar - České polární stanice: Stavba a operační náklady</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Polish Polar Research

ISSN

0138-0338

e-ISSN

—

Svazek periodika

37

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

15

Strana od-do

477-491

Kód UT WoS článku

000390412400003

EID výsledku v databázi Scopus

2-s2.0-85002641259