The Effect of Oxygen Deprivation on Inorganic Nitrogen Uptake in an Antarctic Macrolichen
Abstract Snow meltwater containing 36 ng ml −1 NO 3 − −N (raised here to between 95–101 ng ml −1 NO 3 − −N) and 112 ng ml −1 NH 4 + −N was sprayed onto illuminated Usnea sphacelata at 2°C in a 2−1 capacity transparent perspex chamber force-ventilated with either air or O 2 − (and CO 2 − ) free N 2 ....
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Language: | English |
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Cambridge University Press (CUP)
1996
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Online Access: | http://dx.doi.org/10.1006/lich.1996.0032 http://api.elsevier.com/content/article/PII:S0024-2829(96)90032-8?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0024-2829(96)90032-8?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002428299600045X |
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crcambridgeupr:10.1006/lich.1996.0032 2024-06-09T07:40:28+00:00 The Effect of Oxygen Deprivation on Inorganic Nitrogen Uptake in an Antarctic Macrolichen Crittenden, P. D. 1996 http://dx.doi.org/10.1006/lich.1996.0032 http://api.elsevier.com/content/article/PII:S0024-2829(96)90032-8?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0024-2829(96)90032-8?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002428299600045X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms The Lichenologist volume 28, issue 4, page 347-354 ISSN 0024-2829 1096-1135 journal-article 1996 crcambridgeupr https://doi.org/10.1006/lich.1996.0032 2024-05-15T13:05:46Z Abstract Snow meltwater containing 36 ng ml −1 NO 3 − −N (raised here to between 95–101 ng ml −1 NO 3 − −N) and 112 ng ml −1 NH 4 + −N was sprayed onto illuminated Usnea sphacelata at 2°C in a 2−1 capacity transparent perspex chamber force-ventilated with either air or O 2 − (and CO 2 − ) free N 2 . The NO 3 -concentration in meltwater recirculated through a layer of U. sphacelata fell to c. 8 ng ml −1 after 1.25 h. Although the pattern of decline was broadly comparable in both air and N 2 , the initial rate of decline was lower in N 2 . When undepleted meltwater was continuously sprayed onto the lichen and the effluent collected for analysis, the lichen was found to retain 55% of the wet deposited NO 3 − in air but only 27% under N 2 . Up to 90%) of NH 4 + supplied in a continuous spray of meltwater was retained by the lichen but this was affected little by O 2 and CO 2 deprivation. Article in Journal/Newspaper Antarc* Antarctic Cambridge University Press Antarctic The Lichenologist 28 4 347 354 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Snow meltwater containing 36 ng ml −1 NO 3 − −N (raised here to between 95–101 ng ml −1 NO 3 − −N) and 112 ng ml −1 NH 4 + −N was sprayed onto illuminated Usnea sphacelata at 2°C in a 2−1 capacity transparent perspex chamber force-ventilated with either air or O 2 − (and CO 2 − ) free N 2 . The NO 3 -concentration in meltwater recirculated through a layer of U. sphacelata fell to c. 8 ng ml −1 after 1.25 h. Although the pattern of decline was broadly comparable in both air and N 2 , the initial rate of decline was lower in N 2 . When undepleted meltwater was continuously sprayed onto the lichen and the effluent collected for analysis, the lichen was found to retain 55% of the wet deposited NO 3 − in air but only 27% under N 2 . Up to 90%) of NH 4 + supplied in a continuous spray of meltwater was retained by the lichen but this was affected little by O 2 and CO 2 deprivation. |
format |
Article in Journal/Newspaper |
author |
Crittenden, P. D. |
spellingShingle |
Crittenden, P. D. The Effect of Oxygen Deprivation on Inorganic Nitrogen Uptake in an Antarctic Macrolichen |
author_facet |
Crittenden, P. D. |
author_sort |
Crittenden, P. D. |
title |
The Effect of Oxygen Deprivation on Inorganic Nitrogen Uptake in an Antarctic Macrolichen |
title_short |
The Effect of Oxygen Deprivation on Inorganic Nitrogen Uptake in an Antarctic Macrolichen |
title_full |
The Effect of Oxygen Deprivation on Inorganic Nitrogen Uptake in an Antarctic Macrolichen |
title_fullStr |
The Effect of Oxygen Deprivation on Inorganic Nitrogen Uptake in an Antarctic Macrolichen |
title_full_unstemmed |
The Effect of Oxygen Deprivation on Inorganic Nitrogen Uptake in an Antarctic Macrolichen |
title_sort |
effect of oxygen deprivation on inorganic nitrogen uptake in an antarctic macrolichen |
publisher |
Cambridge University Press (CUP) |
publishDate |
1996 |
url |
http://dx.doi.org/10.1006/lich.1996.0032 http://api.elsevier.com/content/article/PII:S0024-2829(96)90032-8?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0024-2829(96)90032-8?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002428299600045X |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
The Lichenologist volume 28, issue 4, page 347-354 ISSN 0024-2829 1096-1135 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1006/lich.1996.0032 |
container_title |
The Lichenologist |
container_volume |
28 |
container_issue |
4 |
container_start_page |
347 |
op_container_end_page |
354 |
_version_ |
1801383871149768704 |