Seasonal changes of pCO(2) over a subantarctic Macrocystis kelp bed
peer reviewed The partial pressure of carbon dioxide (pCO(2)), calculated from pH and total alkalinity measurements. was monitored together with chlorophyll a and bacterioplankton biomass in shallow coastal water located inside and outside a giant kelp bed (Macrocystis pyrifera) situated in the Kerg...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science & Business Media B.V.
2000
|
Subjects: | |
Online Access: | https://orbi.uliege.be/handle/2268/2147 https://doi.org/10.1007/s003000000142 |
id |
ftorbi:oai:orbi.ulg.ac.be:2268/2147 |
---|---|
record_format |
openpolar |
spelling |
ftorbi:oai:orbi.ulg.ac.be:2268/2147 2024-10-13T14:10:21+00:00 Seasonal changes of pCO(2) over a subantarctic Macrocystis kelp bed Delille, Bruno Delille, D. Fiala, M. Prevost, C. Frankignoulle, Michel 2000 https://orbi.uliege.be/handle/2268/2147 https://doi.org/10.1007/s003000000142 en eng Springer Science & Business Media B.V. http://www.springerlink.com/content/kyd0yrfedcam7g1x/ urn:issn:0722-4060 urn:issn:1432-2056 https://orbi.uliege.be/handle/2268/2147 info:hdl:2268/2147 doi:10.1007/s003000000142 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Polar Biology, 23 (10), 706-716 (2000) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2000 ftorbi https://doi.org/10.1007/s003000000142 2024-09-27T07:01:57Z peer reviewed The partial pressure of carbon dioxide (pCO(2)), calculated from pH and total alkalinity measurements. was monitored together with chlorophyll a and bacterioplankton biomass in shallow coastal water located inside and outside a giant kelp bed (Macrocystis pyrifera) situated in the Kerguelen Archipelago, Southern Ocean. In spite of large changes over a short time-scale pCO(2) variations over the year are large and exhibit a seasonal pattern in which the different stages of the annual biological turnover are well marked. The overall pattern of pCO(2) variations is related to biological activity (development of both photosynthesis and respiration) during almost the whole year. However, physical and thermodynamical constraints exert a strong influence on pCO(2) at meso time-scale (10 days) and/or when biological activity is weak. Macrocystis acts to maintain pCO(2) below saturation almost the whole year and large undersaturations (pCO(2) as low as 20 mu atm) were observed within the kelp bed. Furthermore, primary production of Macrocystis covers a period of 8 similar to 9 months a year from winter to late summer and the kelp bed seems to favour the spring phytoplanktonic bloom. The buffer factor beta indicates that, outside the kelp bed, inorganic carbon dynamics are mainly influenced by air-sea exchange and photosynthesis without calcification. Inside the kelp bed. beta suggests calcification by the epiphytic community. MICROBIOKER - BELCANTO Article in Journal/Newspaper Polar Biology Southern Ocean University of Liège: ORBi (Open Repository and Bibliography) Kerguelen Southern Ocean Polar Biology 23 10 706 716 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Delille, Bruno Delille, D. Fiala, M. Prevost, C. Frankignoulle, Michel Seasonal changes of pCO(2) over a subantarctic Macrocystis kelp bed |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed The partial pressure of carbon dioxide (pCO(2)), calculated from pH and total alkalinity measurements. was monitored together with chlorophyll a and bacterioplankton biomass in shallow coastal water located inside and outside a giant kelp bed (Macrocystis pyrifera) situated in the Kerguelen Archipelago, Southern Ocean. In spite of large changes over a short time-scale pCO(2) variations over the year are large and exhibit a seasonal pattern in which the different stages of the annual biological turnover are well marked. The overall pattern of pCO(2) variations is related to biological activity (development of both photosynthesis and respiration) during almost the whole year. However, physical and thermodynamical constraints exert a strong influence on pCO(2) at meso time-scale (10 days) and/or when biological activity is weak. Macrocystis acts to maintain pCO(2) below saturation almost the whole year and large undersaturations (pCO(2) as low as 20 mu atm) were observed within the kelp bed. Furthermore, primary production of Macrocystis covers a period of 8 similar to 9 months a year from winter to late summer and the kelp bed seems to favour the spring phytoplanktonic bloom. The buffer factor beta indicates that, outside the kelp bed, inorganic carbon dynamics are mainly influenced by air-sea exchange and photosynthesis without calcification. Inside the kelp bed. beta suggests calcification by the epiphytic community. MICROBIOKER - BELCANTO |
format |
Article in Journal/Newspaper |
author |
Delille, Bruno Delille, D. Fiala, M. Prevost, C. Frankignoulle, Michel |
author_facet |
Delille, Bruno Delille, D. Fiala, M. Prevost, C. Frankignoulle, Michel |
author_sort |
Delille, Bruno |
title |
Seasonal changes of pCO(2) over a subantarctic Macrocystis kelp bed |
title_short |
Seasonal changes of pCO(2) over a subantarctic Macrocystis kelp bed |
title_full |
Seasonal changes of pCO(2) over a subantarctic Macrocystis kelp bed |
title_fullStr |
Seasonal changes of pCO(2) over a subantarctic Macrocystis kelp bed |
title_full_unstemmed |
Seasonal changes of pCO(2) over a subantarctic Macrocystis kelp bed |
title_sort |
seasonal changes of pco(2) over a subantarctic macrocystis kelp bed |
publisher |
Springer Science & Business Media B.V. |
publishDate |
2000 |
url |
https://orbi.uliege.be/handle/2268/2147 https://doi.org/10.1007/s003000000142 |
geographic |
Kerguelen Southern Ocean |
geographic_facet |
Kerguelen Southern Ocean |
genre |
Polar Biology Southern Ocean |
genre_facet |
Polar Biology Southern Ocean |
op_source |
Polar Biology, 23 (10), 706-716 (2000) |
op_relation |
http://www.springerlink.com/content/kyd0yrfedcam7g1x/ urn:issn:0722-4060 urn:issn:1432-2056 https://orbi.uliege.be/handle/2268/2147 info:hdl:2268/2147 doi:10.1007/s003000000142 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s003000000142 |
container_title |
Polar Biology |
container_volume |
23 |
container_issue |
10 |
container_start_page |
706 |
op_container_end_page |
716 |
_version_ |
1812817603883696128 |