Dissolved Nitrogen Uptake by a Cyanobacterial Bloom ( Anabaena flos-aquae ) in a Subarctic Lake
Uptake of dissolved nitrogen (NH 4 + + NO 3 - + urea + N 2 ) by a cyanobacterial [ Anabaena flos-aquae (Lyngb.)] De Brèb population in Smith Lake, Alaska, was measured every 2 to 4 days during the spring of 1990. Total dissolved nitrogen uptake ranged from 0.34 to 24.75 μmol liter -1 h -1 , with a m...
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Language: | English |
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American Society for Microbiology
1993
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Online Access: | http://dx.doi.org/10.1128/aem.59.2.422-430.1993 https://journals.asm.org/doi/pdf/10.1128/aem.59.2.422-430.1993 |
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crasmicro:10.1128/aem.59.2.422-430.1993 2024-04-07T07:56:07+00:00 Dissolved Nitrogen Uptake by a Cyanobacterial Bloom ( Anabaena flos-aquae ) in a Subarctic Lake Gu, Binhe Alexander, Vera 1993 http://dx.doi.org/10.1128/aem.59.2.422-430.1993 https://journals.asm.org/doi/pdf/10.1128/aem.59.2.422-430.1993 en eng American Society for Microbiology https://journals.asm.org/non-commercial-tdm-license Applied and Environmental Microbiology volume 59, issue 2, page 422-430 ISSN 0099-2240 1098-5336 Ecology Applied Microbiology and Biotechnology Food Science Biotechnology journal-article 1993 crasmicro https://doi.org/10.1128/aem.59.2.422-430.1993 2024-03-08T00:24:50Z Uptake of dissolved nitrogen (NH 4 + + NO 3 - + urea + N 2 ) by a cyanobacterial [ Anabaena flos-aquae (Lyngb.)] De Brèb population in Smith Lake, Alaska, was measured every 2 to 4 days during the spring of 1990. Total dissolved nitrogen uptake ranged from 0.34 to 24.75 μmol liter -1 h -1 , with a mean of 5.75 μmol liter -1 h -1 the euphotic zone accounted for 91% of the uptake. The mean turnover time for dissolved combined nitrogen (NH 4 + + NO 3 - + urea) in the euphotic zone was less than 14 h, and that for NH 4 + was only 3.6 h. The mean relative preference indices for NH 4 + (2.4), NO 3 - (0.4), and urea (0.5) established NH 4 + as the preferred nitrogenous nutrient. The uptake rates were apparently dependent on biomass, temperature, and light. Regeneration, probably due to zooplankton excretion and bacterial remineralization of dissolved organic nitrogen, was the main source of NH 4 + for the cyanobacterial growth. The high half-saturation constant for NH 4 + with low ambient NH 4 + concentration nevertheless resulted in the simultaneous utilization of several forms of nitrogen. Article in Journal/Newspaper Subarctic Alaska ASM Journals (American Society for Microbiology) Smith Lake ENVELOPE(101.283,101.283,-66.117,-66.117) Applied and Environmental Microbiology 59 2 422 430 |
institution |
Open Polar |
collection |
ASM Journals (American Society for Microbiology) |
op_collection_id |
crasmicro |
language |
English |
topic |
Ecology Applied Microbiology and Biotechnology Food Science Biotechnology |
spellingShingle |
Ecology Applied Microbiology and Biotechnology Food Science Biotechnology Gu, Binhe Alexander, Vera Dissolved Nitrogen Uptake by a Cyanobacterial Bloom ( Anabaena flos-aquae ) in a Subarctic Lake |
topic_facet |
Ecology Applied Microbiology and Biotechnology Food Science Biotechnology |
description |
Uptake of dissolved nitrogen (NH 4 + + NO 3 - + urea + N 2 ) by a cyanobacterial [ Anabaena flos-aquae (Lyngb.)] De Brèb population in Smith Lake, Alaska, was measured every 2 to 4 days during the spring of 1990. Total dissolved nitrogen uptake ranged from 0.34 to 24.75 μmol liter -1 h -1 , with a mean of 5.75 μmol liter -1 h -1 the euphotic zone accounted for 91% of the uptake. The mean turnover time for dissolved combined nitrogen (NH 4 + + NO 3 - + urea) in the euphotic zone was less than 14 h, and that for NH 4 + was only 3.6 h. The mean relative preference indices for NH 4 + (2.4), NO 3 - (0.4), and urea (0.5) established NH 4 + as the preferred nitrogenous nutrient. The uptake rates were apparently dependent on biomass, temperature, and light. Regeneration, probably due to zooplankton excretion and bacterial remineralization of dissolved organic nitrogen, was the main source of NH 4 + for the cyanobacterial growth. The high half-saturation constant for NH 4 + with low ambient NH 4 + concentration nevertheless resulted in the simultaneous utilization of several forms of nitrogen. |
format |
Article in Journal/Newspaper |
author |
Gu, Binhe Alexander, Vera |
author_facet |
Gu, Binhe Alexander, Vera |
author_sort |
Gu, Binhe |
title |
Dissolved Nitrogen Uptake by a Cyanobacterial Bloom ( Anabaena flos-aquae ) in a Subarctic Lake |
title_short |
Dissolved Nitrogen Uptake by a Cyanobacterial Bloom ( Anabaena flos-aquae ) in a Subarctic Lake |
title_full |
Dissolved Nitrogen Uptake by a Cyanobacterial Bloom ( Anabaena flos-aquae ) in a Subarctic Lake |
title_fullStr |
Dissolved Nitrogen Uptake by a Cyanobacterial Bloom ( Anabaena flos-aquae ) in a Subarctic Lake |
title_full_unstemmed |
Dissolved Nitrogen Uptake by a Cyanobacterial Bloom ( Anabaena flos-aquae ) in a Subarctic Lake |
title_sort |
dissolved nitrogen uptake by a cyanobacterial bloom ( anabaena flos-aquae ) in a subarctic lake |
publisher |
American Society for Microbiology |
publishDate |
1993 |
url |
http://dx.doi.org/10.1128/aem.59.2.422-430.1993 https://journals.asm.org/doi/pdf/10.1128/aem.59.2.422-430.1993 |
long_lat |
ENVELOPE(101.283,101.283,-66.117,-66.117) |
geographic |
Smith Lake |
geographic_facet |
Smith Lake |
genre |
Subarctic Alaska |
genre_facet |
Subarctic Alaska |
op_source |
Applied and Environmental Microbiology volume 59, issue 2, page 422-430 ISSN 0099-2240 1098-5336 |
op_rights |
https://journals.asm.org/non-commercial-tdm-license |
op_doi |
https://doi.org/10.1128/aem.59.2.422-430.1993 |
container_title |
Applied and Environmental Microbiology |
container_volume |
59 |
container_issue |
2 |
container_start_page |
422 |
op_container_end_page |
430 |
_version_ |
1795673817405718528 |