Copepod dominance contributes to phytoplankton nitrogen deficiency in lakesduring periods of low precipitation
We investigated meso-zooplankton nutrient recycling as a driver of nitrogen deficiency for phytoplankton production in Arctic Alaskan lakes. Copepods and cladocerans differentially recycle inorganic nutrients based on nutrient demands for new tissue. Copepods typically sequester more nitrogen in the...
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ftutahsudc:oai:digitalcommons.usu.edu:wats_facpub-1226 2023-05-15T14:57:07+02:00 Copepod dominance contributes to phytoplankton nitrogen deficiency in lakesduring periods of low precipitation Johnson, C. R. Luecke, Chris 2012-01-01T08:00:00Z https://digitalcommons.usu.edu/wats_facpub/227 unknown Hosted by Utah State University Libraries https://digitalcommons.usu.edu/wats_facpub/227 Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. PDM Watershed Sciences Faculty Publications copepod dominance phytoplankton nitrogen deficiency Aquaculture and Fisheries Environmental Sciences Fresh Water Studies text 2012 ftutahsudc 2022-08-11T17:19:37Z We investigated meso-zooplankton nutrient recycling as a driver of nitrogen deficiency for phytoplankton production in Arctic Alaskan lakes. Copepods and cladocerans differentially recycle inorganic nutrients based on nutrient demands for new tissue. Copepods typically sequester more nitrogen in the tissue, and can lead to nitrogen, relative to phosphorus, deficient conditions for primary production. Cladocerans sequester more phosphorus relative to nitrogen, potentially resulting in phosphorus deficiency for phytoplankton growth. We observed a positive relationship between meso-zooplankton communities with higher copepod relative to cladoceran biomass and levels of water column nitrogen deficiency. We also observed negative relationships between total precipitation over the 10 days prior to lake sampling and metrics of both nitrogen and phosphorus deficiency. These results support our predictions that relatively high watershed nutrient loading can overwhelm internal nutrient sources and sinks. However, when nutrient loading from the catchment is minimal meso-zooplankton community composition can affect nitrogen relative to phosphorus deficiency for primary production. Relationships between copepod biomass and nitrogen deficiency provide a potential mechanism for the high frequency of nitrogen limitation in Arctic Alaskan lakes. Text Arctic Phytoplankton Zooplankton Copepods Utah State University: DigitalCommons@USU Arctic |
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Utah State University: DigitalCommons@USU |
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ftutahsudc |
language |
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topic |
copepod dominance phytoplankton nitrogen deficiency Aquaculture and Fisheries Environmental Sciences Fresh Water Studies |
spellingShingle |
copepod dominance phytoplankton nitrogen deficiency Aquaculture and Fisheries Environmental Sciences Fresh Water Studies Johnson, C. R. Luecke, Chris Copepod dominance contributes to phytoplankton nitrogen deficiency in lakesduring periods of low precipitation |
topic_facet |
copepod dominance phytoplankton nitrogen deficiency Aquaculture and Fisheries Environmental Sciences Fresh Water Studies |
description |
We investigated meso-zooplankton nutrient recycling as a driver of nitrogen deficiency for phytoplankton production in Arctic Alaskan lakes. Copepods and cladocerans differentially recycle inorganic nutrients based on nutrient demands for new tissue. Copepods typically sequester more nitrogen in the tissue, and can lead to nitrogen, relative to phosphorus, deficient conditions for primary production. Cladocerans sequester more phosphorus relative to nitrogen, potentially resulting in phosphorus deficiency for phytoplankton growth. We observed a positive relationship between meso-zooplankton communities with higher copepod relative to cladoceran biomass and levels of water column nitrogen deficiency. We also observed negative relationships between total precipitation over the 10 days prior to lake sampling and metrics of both nitrogen and phosphorus deficiency. These results support our predictions that relatively high watershed nutrient loading can overwhelm internal nutrient sources and sinks. However, when nutrient loading from the catchment is minimal meso-zooplankton community composition can affect nitrogen relative to phosphorus deficiency for primary production. Relationships between copepod biomass and nitrogen deficiency provide a potential mechanism for the high frequency of nitrogen limitation in Arctic Alaskan lakes. |
format |
Text |
author |
Johnson, C. R. Luecke, Chris |
author_facet |
Johnson, C. R. Luecke, Chris |
author_sort |
Johnson, C. R. |
title |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakesduring periods of low precipitation |
title_short |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakesduring periods of low precipitation |
title_full |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakesduring periods of low precipitation |
title_fullStr |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakesduring periods of low precipitation |
title_full_unstemmed |
Copepod dominance contributes to phytoplankton nitrogen deficiency in lakesduring periods of low precipitation |
title_sort |
copepod dominance contributes to phytoplankton nitrogen deficiency in lakesduring periods of low precipitation |
publisher |
Hosted by Utah State University Libraries |
publishDate |
2012 |
url |
https://digitalcommons.usu.edu/wats_facpub/227 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Phytoplankton Zooplankton Copepods |
genre_facet |
Arctic Phytoplankton Zooplankton Copepods |
op_source |
Watershed Sciences Faculty Publications |
op_relation |
https://digitalcommons.usu.edu/wats_facpub/227 |
op_rights |
Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. |
op_rightsnorm |
PDM |
_version_ |
1766329213498949632 |