Nitrogen cycling in the Barents Sea–Seasonal dynamics of new and regenerated production in the marginal ice zone
The uptake rates of nitrate, ammonium, and urea were measured with a 15 N technique during seven cruises in the marginal ice zone (MIZ) in the Barents Sea in 1984–1988. The results from all the cruises were pooled to obtain means for the prebloom, bloom, transition, and postbloom periods. New produc...
Published in: | Limnology and Oceanography |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
1994
|
Subjects: | |
Online Access: | http://dx.doi.org/10.4319/lo.1994.39.7.1630 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1994.39.7.1630 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1994.39.7.1630 |
id |
crwiley:10.4319/lo.1994.39.7.1630 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.4319/lo.1994.39.7.1630 2024-03-31T07:51:54+00:00 Nitrogen cycling in the Barents Sea–Seasonal dynamics of new and regenerated production in the marginal ice zone Kristiansen, Svein Farbrot, Tove Wheeler, Patricia A, 1994 http://dx.doi.org/10.4319/lo.1994.39.7.1630 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1994.39.7.1630 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1994.39.7.1630 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 39, issue 7, page 1630-1642 ISSN 0024-3590 1939-5590 Aquatic Science Oceanography journal-article 1994 crwiley https://doi.org/10.4319/lo.1994.39.7.1630 2024-03-05T05:37:34Z The uptake rates of nitrate, ammonium, and urea were measured with a 15 N technique during seven cruises in the marginal ice zone (MIZ) in the Barents Sea in 1984–1988. The results from all the cruises were pooled to obtain means for the prebloom, bloom, transition, and postbloom periods. New production—nitrate uptake as percent of total uptake—was high (92–96%) during the prebloom and bloom periods and decreased thereafter. Regenerated production—summed ammonium + urea uptake as percent of total uptake—increased through the bloom cycle and was at its maximum (75–93%) during the postbloom period. New production (as percent of the total) was higher in the ice‐filled parts than in the icefree parts, especially during the postbloom period. Nitrate uptake rates, however, were highest (9–25 nM h −1 ) in open and ice‐free parts during the bloom and transition period. Mean growth rate of phytoplankton‐nitrogen was 0.5 doubling d −1 during the bloom and ranged from 0.3 to 0.4 doubling d −1 after the bloom. We hypothesize that primary production in the MIZ is not nutrient limited but is proportional to phytoplankton standing stocks. Article in Journal/Newspaper Barents Sea Wiley Online Library Barents Sea Limnology and Oceanography 39 7 1630 1642 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Oceanography |
spellingShingle |
Aquatic Science Oceanography Kristiansen, Svein Farbrot, Tove Wheeler, Patricia A, Nitrogen cycling in the Barents Sea–Seasonal dynamics of new and regenerated production in the marginal ice zone |
topic_facet |
Aquatic Science Oceanography |
description |
The uptake rates of nitrate, ammonium, and urea were measured with a 15 N technique during seven cruises in the marginal ice zone (MIZ) in the Barents Sea in 1984–1988. The results from all the cruises were pooled to obtain means for the prebloom, bloom, transition, and postbloom periods. New production—nitrate uptake as percent of total uptake—was high (92–96%) during the prebloom and bloom periods and decreased thereafter. Regenerated production—summed ammonium + urea uptake as percent of total uptake—increased through the bloom cycle and was at its maximum (75–93%) during the postbloom period. New production (as percent of the total) was higher in the ice‐filled parts than in the icefree parts, especially during the postbloom period. Nitrate uptake rates, however, were highest (9–25 nM h −1 ) in open and ice‐free parts during the bloom and transition period. Mean growth rate of phytoplankton‐nitrogen was 0.5 doubling d −1 during the bloom and ranged from 0.3 to 0.4 doubling d −1 after the bloom. We hypothesize that primary production in the MIZ is not nutrient limited but is proportional to phytoplankton standing stocks. |
format |
Article in Journal/Newspaper |
author |
Kristiansen, Svein Farbrot, Tove Wheeler, Patricia A, |
author_facet |
Kristiansen, Svein Farbrot, Tove Wheeler, Patricia A, |
author_sort |
Kristiansen, Svein |
title |
Nitrogen cycling in the Barents Sea–Seasonal dynamics of new and regenerated production in the marginal ice zone |
title_short |
Nitrogen cycling in the Barents Sea–Seasonal dynamics of new and regenerated production in the marginal ice zone |
title_full |
Nitrogen cycling in the Barents Sea–Seasonal dynamics of new and regenerated production in the marginal ice zone |
title_fullStr |
Nitrogen cycling in the Barents Sea–Seasonal dynamics of new and regenerated production in the marginal ice zone |
title_full_unstemmed |
Nitrogen cycling in the Barents Sea–Seasonal dynamics of new and regenerated production in the marginal ice zone |
title_sort |
nitrogen cycling in the barents sea–seasonal dynamics of new and regenerated production in the marginal ice zone |
publisher |
Wiley |
publishDate |
1994 |
url |
http://dx.doi.org/10.4319/lo.1994.39.7.1630 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1994.39.7.1630 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1994.39.7.1630 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_source |
Limnology and Oceanography volume 39, issue 7, page 1630-1642 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.1994.39.7.1630 |
container_title |
Limnology and Oceanography |
container_volume |
39 |
container_issue |
7 |
container_start_page |
1630 |
op_container_end_page |
1642 |
_version_ |
1795030732722143232 |