Nutrient Limitation in Two Arctic Lakes, Alaska
Batch-culture algal bioassays of Selenastrum capricornutum were used to predict the limiting nutrient in two small arctic–tundra lakes in 1979. In 1980 bioassays were performed again, and fertilizer was added to the lakes to test the predictions made from the 1979 bioassay results. In 1980, after th...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1983
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crcansciencepubl:10.1139/f83-136 2023-12-17T10:25:21+01:00 Nutrient Limitation in Two Arctic Lakes, Alaska Mccoy, George A. 1983 http://dx.doi.org/10.1139/f83-136 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-136 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 40, issue 8, page 1195-1202 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1983 crcansciencepubl https://doi.org/10.1139/f83-136 2023-11-19T13:38:59Z Batch-culture algal bioassays of Selenastrum capricornutum were used to predict the limiting nutrient in two small arctic–tundra lakes in 1979. In 1980 bioassays were performed again, and fertilizer was added to the lakes to test the predictions made from the 1979 bioassay results. In 1980, after the addition of phosphorus fertilizer, phytoplankton standing crop increased ~10-fold. After the addition of nitrogen fertilizer, another 10-fold increase in phytoplankton growth was measured. Concurrently, maximum daytime dissolved oxygen increased from 100 to 150% saturation, and pH increased from 7.0 to about 9.2. Further additions of fertilizer in late August and early September 1980 caused no significant increase in primary production. If the nitrogen content of the lake water is increased but that of phosphorus is not, no increase in algal growth occurs. Growth increases with phosphorus additions, but the magnitude of this increase is determined by the available nitrogen. When additional nitrogen is supplied to the system, further increases in algal growth occur. When nitrogen and phosphorus are supplied in excess, physical factors such as light or temperature become limiting in the lakes. Article in Journal/Newspaper Arctic Phytoplankton Tundra Alaska Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Fisheries and Aquatic Sciences 40 8 1195 1202 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Mccoy, George A. Nutrient Limitation in Two Arctic Lakes, Alaska |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Batch-culture algal bioassays of Selenastrum capricornutum were used to predict the limiting nutrient in two small arctic–tundra lakes in 1979. In 1980 bioassays were performed again, and fertilizer was added to the lakes to test the predictions made from the 1979 bioassay results. In 1980, after the addition of phosphorus fertilizer, phytoplankton standing crop increased ~10-fold. After the addition of nitrogen fertilizer, another 10-fold increase in phytoplankton growth was measured. Concurrently, maximum daytime dissolved oxygen increased from 100 to 150% saturation, and pH increased from 7.0 to about 9.2. Further additions of fertilizer in late August and early September 1980 caused no significant increase in primary production. If the nitrogen content of the lake water is increased but that of phosphorus is not, no increase in algal growth occurs. Growth increases with phosphorus additions, but the magnitude of this increase is determined by the available nitrogen. When additional nitrogen is supplied to the system, further increases in algal growth occur. When nitrogen and phosphorus are supplied in excess, physical factors such as light or temperature become limiting in the lakes. |
format |
Article in Journal/Newspaper |
author |
Mccoy, George A. |
author_facet |
Mccoy, George A. |
author_sort |
Mccoy, George A. |
title |
Nutrient Limitation in Two Arctic Lakes, Alaska |
title_short |
Nutrient Limitation in Two Arctic Lakes, Alaska |
title_full |
Nutrient Limitation in Two Arctic Lakes, Alaska |
title_fullStr |
Nutrient Limitation in Two Arctic Lakes, Alaska |
title_full_unstemmed |
Nutrient Limitation in Two Arctic Lakes, Alaska |
title_sort |
nutrient limitation in two arctic lakes, alaska |
publisher |
Canadian Science Publishing |
publishDate |
1983 |
url |
http://dx.doi.org/10.1139/f83-136 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-136 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Phytoplankton Tundra Alaska |
genre_facet |
Arctic Phytoplankton Tundra Alaska |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 40, issue 8, page 1195-1202 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f83-136 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
40 |
container_issue |
8 |
container_start_page |
1195 |
op_container_end_page |
1202 |
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1785575925334671360 |