Standardized lagal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands)

0422600 - BÚ 2014 RIV SE eng J - Journal Article
Kvíderová, Jana - Elster, Josef
Standardized lagal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands).
Polar Research. Roč. 32, č. 11191 (2013). ISSN 0800-0395. E-ISSN 1751-8369
R&D Projects: GA AV ČR KJB600050708; GA MŠMT ME 945; GA MŠMT ME 934
Institutional support: RVO:67985939
Keywords : Antarctic * streams * growth potential
Subject RIV: EH - Ecology, Behaviour
Impact factor: 1.686, year: 2013

Standardized values of algal growth potential (AGP) and algal primary production rate were determined in maritime Antarctic stream waters at 5 and 25 °C. In addition, the nutrient requirements of polar and temperate Stichococcus strains that were used in the assay were evaluated. Growth ofthe polar strain was inhibited at higher nutrient concentration reflecting adaptation to low nutrient availability in polar region. The AGP values proved nitrogen limitation in the oligotrophic stream waters and no nutrient limitation was observed in mesotrophic ones. The heavy metal inhibition was not observed. The positive correlation between AGP values and water nutrient content indicates that this method accurently and comprehensively monitors the biological availability of nutrients in polar streams.
Permanent Link: http://hdl.handle.net/11104/0228871