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Seasonal variation ...
Seasonal variation of CO2 saturation in the Gulf of Bothnia : Indications of marine net heterotrophy
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- Algesten, Grete, 1974- (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
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- Wikner, Johan (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Umeå marina forskningscentrum (UMF),UMFpub
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- Sobek, Sebastian (author)
- Uppsala universitet,Limnologi
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- Tranvik, Lars J. (author)
- Uppsala universitet,Limnologi
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- Jansson, Mats (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
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(creator_code:org_t)
- Washington, D.C : American Geophysical Union (AGU), 2004
- 2004
- English.
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In: Global Biogeochemical Cycles. - Washington, D.C : American Geophysical Union (AGU). - 0886-6236 .- 1944-9224. ; 18, s. 4021-4028
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Seasonal variation of pCO2 and primary and bacterioplankton production were measured in the Gulf of Bothnia during an annual cycle. Surface water was supersaturated with CO2 on an annual basis, indicating net heterotrophy and a source of CO2 to the atmosphere. However, the Gulf of Bothnia oscillated between being a sink and a source of CO2 over the studied period, largely decided by temporal variation in bacterial respiration (BR) and primary production (PP) in the water column above the pycnocline. The calculated annual respiration-production balance (BR-PP) was very similar to the estimated CO2 emission from the Gulf of Bothnia, which indicates that these processes were major determinants of the exchange of CO2 between water and atmosphere. The southern basin (the Bothnian Sea) had a lower net release of CO2 to the atmosphere than the northern Bothnian Bay (7.1 and 9.7 mmol C m−2 d−1, respectively), due to higher primary production, which to a larger extent balanced respiration in this basin.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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