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Effects of calcific...
Effects of calcification on air-water CO2 fluxes in tropical seagrass meadows : A mesocosm experiment
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- Ismail, Rashid O., 1986- (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Stockholm University, Sweden; University of Dar es Salaam, Tanzania
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- Asplund, Maria. E., 1970 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Kristineberg,Department of Biological and Environmental Sciences, Kristineberg
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- Gullström, Martin (författare)
- Södertörns högskola,Miljövetenskap
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- George, Rushingisha, 1981- (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,e Tanzania Fisheries Research Institute (TAFIRI), Tanzania,Stockholm University, Sweden; Tanzania Fisheries Research Institute (TAFIRI), Tanzania
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- Dahl, Martin (författare)
- Södertörns högskola,Miljövetenskap
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- Buriyo, Amelia S. (författare)
- University of Dar es Salaam, Tanzania
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- Mtolera, Matern S.P. (författare)
- University of Dar es Salaam, Tanzania
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- Björk, Mats, 1960- (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Stockholm University, Sweden
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(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- Engelska.
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Ingår i: Journal of Experimental Marine Biology and Ecology. - : Elsevier BV. - 0022-0981 .- 1879-1697. ; 561
- Relaterad länk:
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https://doi.org/10.1...
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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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https://gup.ub.gu.se...
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Abstract
Ämnesord
Stäng
- Seagrass meadows deliver a range of ecosystem services, where one of the more important is the capacity to store carbon and serve as sinks for atmospheric carbon dioxide. The capacity of seagrass meadows for carbon storage might, however, be modified and complicated by several factors; one important factor is the possible effects of calcification within the meadows. In tropical areas, seagrass meadows can contain high proportions of calcareous organisms, which through their calcification may cause release of CO2. To study this aspect of the CO2 balance within tropical seagrass systems, we investigated the air-water CO2 flux in seagrass mesocosms with different plant community compositions, i.e. mixtures of seagrass and calcifying macroalgae, having similar overall photosynthetic oxygen evolution rates. The measured CO2 fluxes changed both in rate and direction over the day and were significantly related to plant community composition. Downward fluxes of CO2 were found only over vegetation with high proportion of seagrass and in the afternoon, whereas occurrence of calcifying algae appeared to reverse the flow. A partial least squares (PLS) regression model indicated that pH, pCO2 and dissolved inorganic carbon (DIC) were the primary environmental variables predicting the CO2 fluxes. Our findings show that algal calcification might partly counteract the carbon sequestration in seagrass meadows.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- Seagrass ecosystem
- primary productivity
- calcification
- plant community composition
- blue carbon
- carbon sinks
- climate change mitigation
- marin ekologi
- Marine Ecology
- Biogeochemistry
- biogeokemi
- marinbiologi
- Marine Biology
- växtfysiologi
- Plant Physiology
- Plant Ecology
- växtekologi
- Seagrass ecosystem Primary productivity Calcification Plant community composition Blue carbon Carbon sinks Climate change mitigation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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