Uptake of phosphate and inorganic nitrogen by a sediment‐algal system in a subarctic lake
SUMMARY. The uptake of phosphate and inorganic nitrogen by sediment and phytoplankton was studied under natural conditions (1977) and during lake fertilization with phosphorus and nitrogen (1978–79) in Lake Gunillajaure, a small, stratified, subarctic lake in northern Sweden. The experiments were pe...
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Online Access: | http://dx.doi.org/10.1111/j.1365-2427.1985.tb00190.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2427.1985.tb00190.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2427.1985.tb00190.x |
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crwiley:10.1111/j.1365-2427.1985.tb00190.x 2024-06-02T08:12:11+00:00 Uptake of phosphate and inorganic nitrogen by a sediment‐algal system in a subarctic lake BJÖRK‐RAMBERG, SUSANNA 1985 http://dx.doi.org/10.1111/j.1365-2427.1985.tb00190.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2427.1985.tb00190.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2427.1985.tb00190.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Freshwater Biology volume 15, issue 2, page 175-183 ISSN 0046-5070 1365-2427 journal-article 1985 crwiley https://doi.org/10.1111/j.1365-2427.1985.tb00190.x 2024-05-03T10:59:02Z SUMMARY. The uptake of phosphate and inorganic nitrogen by sediment and phytoplankton was studied under natural conditions (1977) and during lake fertilization with phosphorus and nitrogen (1978–79) in Lake Gunillajaure, a small, stratified, subarctic lake in northern Sweden. The experiments were performed in situ in plexiglass cylinders, to which additions of nutrients were made, and the uptake followed by consecutive sampling and analysis of the water phase. Additions of HgCl 2 to the experimental vessels reduced the phosphate uptake to the sediment to less than 10% and it could therefore be concluded that the sediment uptake was mainly of biological nature. Dark assimilation was 30–40% of that in light. Since light clearly stimulated the sediment uptake the epipelic algae were probably responsible. The phosphate uptake to the sediment could be described by Michaelis‐Menten kinetics and the calculated constants (V max , ks) were very alike in 1977 and 1978 but appeared to have increased in 1979. The sediment uptake of ammonium and nitrate was very slow indrcating that the epipelic algae were not nitrogen starved. Even though the epipelic algae had a potential for efficient uptake of phosphorus, the phytoplankton took up 92–96% of the phosphate added to the lake on each fertilization occasion due to the relatively large water volume in the epilimnion in relation to the bottom area available for the epipelic algae. Article in Journal/Newspaper Northern Sweden Subarctic Wiley Online Library Freshwater Biology 15 2 175 183 |
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Wiley Online Library |
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crwiley |
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English |
description |
SUMMARY. The uptake of phosphate and inorganic nitrogen by sediment and phytoplankton was studied under natural conditions (1977) and during lake fertilization with phosphorus and nitrogen (1978–79) in Lake Gunillajaure, a small, stratified, subarctic lake in northern Sweden. The experiments were performed in situ in plexiglass cylinders, to which additions of nutrients were made, and the uptake followed by consecutive sampling and analysis of the water phase. Additions of HgCl 2 to the experimental vessels reduced the phosphate uptake to the sediment to less than 10% and it could therefore be concluded that the sediment uptake was mainly of biological nature. Dark assimilation was 30–40% of that in light. Since light clearly stimulated the sediment uptake the epipelic algae were probably responsible. The phosphate uptake to the sediment could be described by Michaelis‐Menten kinetics and the calculated constants (V max , ks) were very alike in 1977 and 1978 but appeared to have increased in 1979. The sediment uptake of ammonium and nitrate was very slow indrcating that the epipelic algae were not nitrogen starved. Even though the epipelic algae had a potential for efficient uptake of phosphorus, the phytoplankton took up 92–96% of the phosphate added to the lake on each fertilization occasion due to the relatively large water volume in the epilimnion in relation to the bottom area available for the epipelic algae. |
format |
Article in Journal/Newspaper |
author |
BJÖRK‐RAMBERG, SUSANNA |
spellingShingle |
BJÖRK‐RAMBERG, SUSANNA Uptake of phosphate and inorganic nitrogen by a sediment‐algal system in a subarctic lake |
author_facet |
BJÖRK‐RAMBERG, SUSANNA |
author_sort |
BJÖRK‐RAMBERG, SUSANNA |
title |
Uptake of phosphate and inorganic nitrogen by a sediment‐algal system in a subarctic lake |
title_short |
Uptake of phosphate and inorganic nitrogen by a sediment‐algal system in a subarctic lake |
title_full |
Uptake of phosphate and inorganic nitrogen by a sediment‐algal system in a subarctic lake |
title_fullStr |
Uptake of phosphate and inorganic nitrogen by a sediment‐algal system in a subarctic lake |
title_full_unstemmed |
Uptake of phosphate and inorganic nitrogen by a sediment‐algal system in a subarctic lake |
title_sort |
uptake of phosphate and inorganic nitrogen by a sediment‐algal system in a subarctic lake |
publisher |
Wiley |
publishDate |
1985 |
url |
http://dx.doi.org/10.1111/j.1365-2427.1985.tb00190.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2427.1985.tb00190.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2427.1985.tb00190.x |
genre |
Northern Sweden Subarctic |
genre_facet |
Northern Sweden Subarctic |
op_source |
Freshwater Biology volume 15, issue 2, page 175-183 ISSN 0046-5070 1365-2427 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2427.1985.tb00190.x |
container_title |
Freshwater Biology |
container_volume |
15 |
container_issue |
2 |
container_start_page |
175 |
op_container_end_page |
183 |
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1800758548484849664 |