Standardized algal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands)
In addition to the chemical analyses providing total nutrient content, standardized water trophic status bioassays are useful in the determination of available nutrients for primary producers. The aim of the study was to determine the standardized values of algal growth potential (AGP) and algal pri...
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Norwegian Polar Institute
2013
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ftdoajarticles:oai:doaj.org/article:9fe8550d5ad44240b2d4be9da462cd73 2023-05-15T13:36:39+02:00 Standardized algal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands) Jana Kvíderová Josef Elster 2013-10-01T00:00:00Z https://doi.org/10.3402/polar.v32i0.11191 https://doaj.org/article/9fe8550d5ad44240b2d4be9da462cd73 EN eng Norwegian Polar Institute www.polarresearch.net/index.php/polar/article/download/11191/pdf_1 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 doi:10.3402/polar.v32i0.11191 0800-0395 1751-8369 https://doaj.org/article/9fe8550d5ad44240b2d4be9da462cd73 Polar Research, Vol 32, Iss 0, Pp 1-17 (2013) Maritime Antarctic microalgae nutrient limitations snow-melt stream water Environmental sciences GE1-350 Oceanography GC1-1581 article 2013 ftdoajarticles https://doi.org/10.3402/polar.v32i0.11191 2022-12-31T08:48:07Z In addition to the chemical analyses providing total nutrient content, standardized water trophic status bioassays are useful in the determination of available nutrients for primary producers. The aim of the study was to determine the standardized values of algal growth potential (AGP) and algal primary productivity rate (APPR) of maritime Antarctic stream water using modified AGP/APPR protocols. The standardized values of AGP and the APPR of oligotrophic and mesotrophic water samples from snow-melt streams were measured, and possible nutrient limitation and heavy metal inhibition were evaluated at 5°C and 25°C using polar and temperate strains of Stichococcus bacillaris, respectively. The water samples were enriched for the nutrient limitation tests with 1000 µg l−1 −N, 50 µg l−1 −P, and a mixture of 1000 µg l−1 −N + 50 µg l−1 −P, and for the heavy metal inhibition tests with 1000 µg l−1 Na2-ethylenediaminetetraacetic acid (EDTA). The AGP of oligotrophic samples was significantly lower than that of the mesotrophic ones at both temperatures. In addition, AGP was significantly higher at 5°C than at 25°C. Oligotrophic samples were identified as being nitrogen limited, while no nutrient limitation was observed in the mesotrophic samples. No statistically significant heavy metal inhibition was observed at either temperature. The positive correlation of AGP and water nutrient content indicates that the method used accurately and comprehensively monitors the changes in biological availability of mineral nutrients and can provide a standardized reference point for similar exploration of freshwater ecosystems across both polar regions. Article in Journal/Newspaper Antarc* Antarctic King George Island Polar Research Directory of Open Access Journals: DOAJ Articles Antarctic King George Island Polar Research 32 1 11191 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Maritime Antarctic microalgae nutrient limitations snow-melt stream water Environmental sciences GE1-350 Oceanography GC1-1581 |
spellingShingle |
Maritime Antarctic microalgae nutrient limitations snow-melt stream water Environmental sciences GE1-350 Oceanography GC1-1581 Jana Kvíderová Josef Elster Standardized algal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands) |
topic_facet |
Maritime Antarctic microalgae nutrient limitations snow-melt stream water Environmental sciences GE1-350 Oceanography GC1-1581 |
description |
In addition to the chemical analyses providing total nutrient content, standardized water trophic status bioassays are useful in the determination of available nutrients for primary producers. The aim of the study was to determine the standardized values of algal growth potential (AGP) and algal primary productivity rate (APPR) of maritime Antarctic stream water using modified AGP/APPR protocols. The standardized values of AGP and the APPR of oligotrophic and mesotrophic water samples from snow-melt streams were measured, and possible nutrient limitation and heavy metal inhibition were evaluated at 5°C and 25°C using polar and temperate strains of Stichococcus bacillaris, respectively. The water samples were enriched for the nutrient limitation tests with 1000 µg l−1 −N, 50 µg l−1 −P, and a mixture of 1000 µg l−1 −N + 50 µg l−1 −P, and for the heavy metal inhibition tests with 1000 µg l−1 Na2-ethylenediaminetetraacetic acid (EDTA). The AGP of oligotrophic samples was significantly lower than that of the mesotrophic ones at both temperatures. In addition, AGP was significantly higher at 5°C than at 25°C. Oligotrophic samples were identified as being nitrogen limited, while no nutrient limitation was observed in the mesotrophic samples. No statistically significant heavy metal inhibition was observed at either temperature. The positive correlation of AGP and water nutrient content indicates that the method used accurately and comprehensively monitors the changes in biological availability of mineral nutrients and can provide a standardized reference point for similar exploration of freshwater ecosystems across both polar regions. |
format |
Article in Journal/Newspaper |
author |
Jana Kvíderová Josef Elster |
author_facet |
Jana Kvíderová Josef Elster |
author_sort |
Jana Kvíderová |
title |
Standardized algal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands) |
title_short |
Standardized algal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands) |
title_full |
Standardized algal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands) |
title_fullStr |
Standardized algal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands) |
title_full_unstemmed |
Standardized algal growth potential and/or algal primary production rates of maritime Antarctic stream waters (King George Island, South Shetlands) |
title_sort |
standardized algal growth potential and/or algal primary production rates of maritime antarctic stream waters (king george island, south shetlands) |
publisher |
Norwegian Polar Institute |
publishDate |
2013 |
url |
https://doi.org/10.3402/polar.v32i0.11191 https://doaj.org/article/9fe8550d5ad44240b2d4be9da462cd73 |
geographic |
Antarctic King George Island |
geographic_facet |
Antarctic King George Island |
genre |
Antarc* Antarctic King George Island Polar Research |
genre_facet |
Antarc* Antarctic King George Island Polar Research |
op_source |
Polar Research, Vol 32, Iss 0, Pp 1-17 (2013) |
op_relation |
www.polarresearch.net/index.php/polar/article/download/11191/pdf_1 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 doi:10.3402/polar.v32i0.11191 0800-0395 1751-8369 https://doaj.org/article/9fe8550d5ad44240b2d4be9da462cd73 |
op_doi |
https://doi.org/10.3402/polar.v32i0.11191 |
container_title |
Polar Research |
container_volume |
32 |
container_issue |
1 |
container_start_page |
11191 |
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1766082076882239488 |