Seasonal Inorganic Carbon and Nitrogen Transport by Phytoplankton in an Arctic Lake
Euphotic zone profiles of dissolved inorganic carbon [Formula: see text] and nitrogen [Formula: see text] transport were taken from Toolik Lake, Alaska, at approximately 10-d intervals through 100-d growing seasons in 1980 and 1981. Rates of DIC transport ranged from <0.2 to 7.8 μmol∙L −1 ∙d...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1986
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/f86-147 http://www.nrcresearchpress.com/doi/pdf/10.1139/f86-147 |
id |
crcansciencepubl:10.1139/f86-147 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/f86-147 2023-12-17T10:26:31+01:00 Seasonal Inorganic Carbon and Nitrogen Transport by Phytoplankton in an Arctic Lake Whalen, S. C. Alexander, V. 1986 http://dx.doi.org/10.1139/f86-147 http://www.nrcresearchpress.com/doi/pdf/10.1139/f86-147 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 43, issue 6, page 1177-1186 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1986 crcansciencepubl https://doi.org/10.1139/f86-147 2023-11-19T13:39:24Z Euphotic zone profiles of dissolved inorganic carbon [Formula: see text] and nitrogen [Formula: see text] transport were taken from Toolik Lake, Alaska, at approximately 10-d intervals through 100-d growing seasons in 1980 and 1981. Rates of DIC transport ranged from <0.2 to 7.8 μmol∙L −1 ∙d −1 , with the maximum always at 0–1 m. Nitrate and ammonium transport rates ranged from <0.1 to 3 and 0.4 to 8 nmol∙L −1 ∙d −1 , with the vertical pattern variable. For the 1980 and 1981 investigative periods, DIC transport was 622 and 504 mmol∙m −2 (7.5 and 6.0 g C∙m −2 ), making Toolik one of the most oligotrophic lakes on record. DIN transport for the respective years was 34 and 41 mmol∙m −2 , giving molar C/N transport ratios of 18 and 12. For both years,[Formula: see text] was <20% of total DIN transport. Half-saturation constants for [Formula: see text] and [Formula: see text] transport were similar, averaging [Formula: see text] 0.11 ± 0.08 and 0.15 ± 0.13 μmol∙L −1 . During the ice-free period, mean turnover times were also comparable at 6.3 ± 8.2 [Formula: see text] and 2.6 ± 1.2 d [Formula: see text], while relative preference indices for both nutrients were often near 1.0, indicating transport equitable with availability. The total data show a population well adapted to utilize consistently low ambient concentrations of [Formula: see text] and [Formula: see text] (0.05–0.20 μmol∙L −1 ) in the ice-free season, but incapable of exploiting elevated (2–3 μmol∙L −1 ) under-ice levels of [Formula: see text]. Article in Journal/Newspaper Arctic Phytoplankton Alaska Canadian Science Publishing (via Crossref) Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Canadian Journal of Fisheries and Aquatic Sciences 43 6 1177 1186 |
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 Whalen, S. C. Alexander, V. Seasonal Inorganic Carbon and Nitrogen Transport by Phytoplankton in an Arctic Lake |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Euphotic zone profiles of dissolved inorganic carbon [Formula: see text] and nitrogen [Formula: see text] transport were taken from Toolik Lake, Alaska, at approximately 10-d intervals through 100-d growing seasons in 1980 and 1981. Rates of DIC transport ranged from <0.2 to 7.8 μmol∙L −1 ∙d −1 , with the maximum always at 0–1 m. Nitrate and ammonium transport rates ranged from <0.1 to 3 and 0.4 to 8 nmol∙L −1 ∙d −1 , with the vertical pattern variable. For the 1980 and 1981 investigative periods, DIC transport was 622 and 504 mmol∙m −2 (7.5 and 6.0 g C∙m −2 ), making Toolik one of the most oligotrophic lakes on record. DIN transport for the respective years was 34 and 41 mmol∙m −2 , giving molar C/N transport ratios of 18 and 12. For both years,[Formula: see text] was <20% of total DIN transport. Half-saturation constants for [Formula: see text] and [Formula: see text] transport were similar, averaging [Formula: see text] 0.11 ± 0.08 and 0.15 ± 0.13 μmol∙L −1 . During the ice-free period, mean turnover times were also comparable at 6.3 ± 8.2 [Formula: see text] and 2.6 ± 1.2 d [Formula: see text], while relative preference indices for both nutrients were often near 1.0, indicating transport equitable with availability. The total data show a population well adapted to utilize consistently low ambient concentrations of [Formula: see text] and [Formula: see text] (0.05–0.20 μmol∙L −1 ) in the ice-free season, but incapable of exploiting elevated (2–3 μmol∙L −1 ) under-ice levels of [Formula: see text]. |
format |
Article in Journal/Newspaper |
author |
Whalen, S. C. Alexander, V. |
author_facet |
Whalen, S. C. Alexander, V. |
author_sort |
Whalen, S. C. |
title |
Seasonal Inorganic Carbon and Nitrogen Transport by Phytoplankton in an Arctic Lake |
title_short |
Seasonal Inorganic Carbon and Nitrogen Transport by Phytoplankton in an Arctic Lake |
title_full |
Seasonal Inorganic Carbon and Nitrogen Transport by Phytoplankton in an Arctic Lake |
title_fullStr |
Seasonal Inorganic Carbon and Nitrogen Transport by Phytoplankton in an Arctic Lake |
title_full_unstemmed |
Seasonal Inorganic Carbon and Nitrogen Transport by Phytoplankton in an Arctic Lake |
title_sort |
seasonal inorganic carbon and nitrogen transport by phytoplankton in an arctic lake |
publisher |
Canadian Science Publishing |
publishDate |
1986 |
url |
http://dx.doi.org/10.1139/f86-147 http://www.nrcresearchpress.com/doi/pdf/10.1139/f86-147 |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) |
geographic |
Arctic Arctic Lake |
geographic_facet |
Arctic Arctic Lake |
genre |
Arctic Phytoplankton Alaska |
genre_facet |
Arctic Phytoplankton Alaska |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 43, issue 6, page 1177-1186 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f86-147 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
43 |
container_issue |
6 |
container_start_page |
1177 |
op_container_end_page |
1186 |
_version_ |
1785578241956773888 |