Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw
This investigation represents the first integrated study of primary production, nutrient dynamics and mineralisation in a northeastern fjord of Greenland. The data presented represent conditions and activities during the early summer thaw (first 2 weeks of July). Primary production (5.3 mmol C m(-2)...
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Language: | English |
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1996
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Online Access: | https://orbit.dtu.dk/en/publications/56eb080b-bd87-408d-a0c6-6e3cba63fc24 https://doi.org/10.1007/BF02329069 |
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ftdtupubl:oai:pure.atira.dk:publications/56eb080b-bd87-408d-a0c6-6e3cba63fc24 2024-02-11T10:01:29+01:00 Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw Rysgaard, S. Finster, K. Dahlgaard, H. 1996 https://orbit.dtu.dk/en/publications/56eb080b-bd87-408d-a0c6-6e3cba63fc24 https://doi.org/10.1007/BF02329069 eng eng https://orbit.dtu.dk/en/publications/56eb080b-bd87-408d-a0c6-6e3cba63fc24 info:eu-repo/semantics/restrictedAccess Rysgaard , S , Finster , K & Dahlgaard , H 1996 , ' Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw ' , Polar Biology , vol. 16 , no. 7 , pp. 497-506 . https://doi.org/10.1007/BF02329069 Processer og stofkredsløb i økosystemer Nuklear sikkerhed article 1996 ftdtupubl https://doi.org/10.1007/BF02329069 2024-01-24T23:56:52Z This investigation represents the first integrated study of primary production, nutrient dynamics and mineralisation in a northeastern fjord of Greenland. The data presented represent conditions and activities during the early summer thaw (first 2 weeks of July). Primary production (5.3 mmol C m(-2) d(-1)) and chlorophyll a (4.1 mu g l(-1)) values were found to be comparable with measurements from other Arctic regions. Water column N-fixation rates were low (<0.02 mu mol N m(-1) d(-1)), but comparable with other estuarine systems. Despite a constant low temperature in the bottom waters (-1.0 to -1.8 degrees C), a high sedimentary O-2 uptake (740 mu mol m(-2) h(-1)) was observed and was primarily caused by the presence of benthic infauna. Bioturbation by benthic infauna was reflected in both homogeneous Pb-210 and Cs-137 profiles in the upper 4 cm of the sediment. Permanent accumulation within Young Sound was measured to 0.12 cm/year corresponding to 153 mmol C m(-2) year(-1) and 15 mmol N m(-2) year(-1). Rates of nitrification (22 mu mol m(-2) h(-1)) and denitrification (9 mu mol m(-2) h(-1)) were comparable with rates reported for other sediments with much higher environmental temperatures. Suphate reduction rates integrated over the upper 12 cm of the sediment were calculated to be 44 mu mol m(-2) h(-1). Article in Journal/Newspaper Arctic Greenland Polar Biology Technical University of Denmark: DTU Orbit Arctic Greenland Polar Biology 16 7 497 506 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Processer og stofkredsløb i økosystemer Nuklear sikkerhed |
spellingShingle |
Processer og stofkredsløb i økosystemer Nuklear sikkerhed Rysgaard, S. Finster, K. Dahlgaard, H. Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw |
topic_facet |
Processer og stofkredsløb i økosystemer Nuklear sikkerhed |
description |
This investigation represents the first integrated study of primary production, nutrient dynamics and mineralisation in a northeastern fjord of Greenland. The data presented represent conditions and activities during the early summer thaw (first 2 weeks of July). Primary production (5.3 mmol C m(-2) d(-1)) and chlorophyll a (4.1 mu g l(-1)) values were found to be comparable with measurements from other Arctic regions. Water column N-fixation rates were low (<0.02 mu mol N m(-1) d(-1)), but comparable with other estuarine systems. Despite a constant low temperature in the bottom waters (-1.0 to -1.8 degrees C), a high sedimentary O-2 uptake (740 mu mol m(-2) h(-1)) was observed and was primarily caused by the presence of benthic infauna. Bioturbation by benthic infauna was reflected in both homogeneous Pb-210 and Cs-137 profiles in the upper 4 cm of the sediment. Permanent accumulation within Young Sound was measured to 0.12 cm/year corresponding to 153 mmol C m(-2) year(-1) and 15 mmol N m(-2) year(-1). Rates of nitrification (22 mu mol m(-2) h(-1)) and denitrification (9 mu mol m(-2) h(-1)) were comparable with rates reported for other sediments with much higher environmental temperatures. Suphate reduction rates integrated over the upper 12 cm of the sediment were calculated to be 44 mu mol m(-2) h(-1). |
format |
Article in Journal/Newspaper |
author |
Rysgaard, S. Finster, K. Dahlgaard, H. |
author_facet |
Rysgaard, S. Finster, K. Dahlgaard, H. |
author_sort |
Rysgaard, S. |
title |
Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw |
title_short |
Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw |
title_full |
Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw |
title_fullStr |
Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw |
title_full_unstemmed |
Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw |
title_sort |
primary production, nutrient dynamics and mineralisation in a northeastern greenland fjord during the summer thaw |
publishDate |
1996 |
url |
https://orbit.dtu.dk/en/publications/56eb080b-bd87-408d-a0c6-6e3cba63fc24 https://doi.org/10.1007/BF02329069 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Polar Biology |
genre_facet |
Arctic Greenland Polar Biology |
op_source |
Rysgaard , S , Finster , K & Dahlgaard , H 1996 , ' Primary production, nutrient dynamics and mineralisation in a northeastern Greenland fjord during the summer thaw ' , Polar Biology , vol. 16 , no. 7 , pp. 497-506 . https://doi.org/10.1007/BF02329069 |
op_relation |
https://orbit.dtu.dk/en/publications/56eb080b-bd87-408d-a0c6-6e3cba63fc24 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/BF02329069 |
container_title |
Polar Biology |
container_volume |
16 |
container_issue |
7 |
container_start_page |
497 |
op_container_end_page |
506 |
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1790597293437616128 |