Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat
It has been speculated that macrophytes beds might act as a refuge for calcifiers from ocean acidification. In the shallow nearshores of the western Kiel Bay (Baltic Sea), mussel and seagrass beds are interlacing, forming a mosaic habitat. Naturally, the diverse physiological activities of seagrasse...
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Copernicus Publications (EGU)
2015
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Online Access: | https://oceanrep.geomar.de/id/eprint/29306/ https://oceanrep.geomar.de/id/eprint/29306/1/bgd-12-11423-2015.pdf https://doi.org/10.5194/bgd-12-11423-2015 |
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ftoceanrep:oai:oceanrep.geomar.de:29306 2023-05-15T17:51:05+02:00 Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat Saderne, Vincent Fietzek, Peer Aßmann, Steffen Körtzinger, Arne Hiebenthal, Claas 2015 text https://oceanrep.geomar.de/id/eprint/29306/ https://oceanrep.geomar.de/id/eprint/29306/1/bgd-12-11423-2015.pdf https://doi.org/10.5194/bgd-12-11423-2015 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/29306/1/bgd-12-11423-2015.pdf Saderne, V., Fietzek, P., Aßmann, S., Körtzinger, A. and Hiebenthal, C. (2015) Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat. Open Access Biogeosciences Discussions, 12 (14). pp. 11423-11461. DOI 10.5194/bgd-12-11423-2015 <https://doi.org/10.5194/bgd-12-11423-2015>. doi:10.5194/bgd-12-11423-2015 cc_by_3.0 info:eu-repo/semantics/openAccess Article NonPeerReviewed 2015 ftoceanrep https://doi.org/10.5194/bgd-12-11423-2015 2023-04-07T15:20:15Z It has been speculated that macrophytes beds might act as a refuge for calcifiers from ocean acidification. In the shallow nearshores of the western Kiel Bay (Baltic Sea), mussel and seagrass beds are interlacing, forming a mosaic habitat. Naturally, the diverse physiological activities of seagrasses and mussels are affected by seawater carbonate chemistry and they locally modify it in return. Calcification by shellfishes is sensitive to seawater acidity; therefore the photosynthetic activity of seagrasses in confined shallow waters creates favorable chemical conditions to calcification at daytime but turn the habitat less favorable or even corrosive to shells at night. In contrast, mussel respiration releases CO2, turning the environment more favorable for photosynthesis by adjacent seagrasses. At the end of summer, these dynamics are altered by the invasion of high pCO2/low O2 coming from the deep water of the Bay. However, it is in summer that mussel spats settle on the leaves of seagrasses until migrating to the permanent habitat where they will grow adult. These early life phases (larvae/spats) are considered as most sensitive with regard to seawater acidity. So far, the dynamics of CO2 have never been continuously measured during this key period of the year, mostly due to the technological limitations. In this project we used a combination of state-of-the-art technologies and discrete sampling to obtain high-resolution time-series of pCO2 and O2 at the interface between a seagrass and a mussel patch in Kiel Bay in August and September 2013. From these, we derive the entire carbonate chemistry using statistical models. We found the monthly average pCO2 more than 50 % (approx. 640 μatm for August and September) above atmospheric equilibrium right above the mussel patch together with large diel variations of pCO2 within 24 h: 887 ± 331 μatm in August and 742 ± 281 μatm in September (mean ± SD). We observed important daily corrosiveness for calcium carbonates (Ωarag and Ωcalc < 1) centered on sunrise. On ... Article in Journal/Newspaper Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
It has been speculated that macrophytes beds might act as a refuge for calcifiers from ocean acidification. In the shallow nearshores of the western Kiel Bay (Baltic Sea), mussel and seagrass beds are interlacing, forming a mosaic habitat. Naturally, the diverse physiological activities of seagrasses and mussels are affected by seawater carbonate chemistry and they locally modify it in return. Calcification by shellfishes is sensitive to seawater acidity; therefore the photosynthetic activity of seagrasses in confined shallow waters creates favorable chemical conditions to calcification at daytime but turn the habitat less favorable or even corrosive to shells at night. In contrast, mussel respiration releases CO2, turning the environment more favorable for photosynthesis by adjacent seagrasses. At the end of summer, these dynamics are altered by the invasion of high pCO2/low O2 coming from the deep water of the Bay. However, it is in summer that mussel spats settle on the leaves of seagrasses until migrating to the permanent habitat where they will grow adult. These early life phases (larvae/spats) are considered as most sensitive with regard to seawater acidity. So far, the dynamics of CO2 have never been continuously measured during this key period of the year, mostly due to the technological limitations. In this project we used a combination of state-of-the-art technologies and discrete sampling to obtain high-resolution time-series of pCO2 and O2 at the interface between a seagrass and a mussel patch in Kiel Bay in August and September 2013. From these, we derive the entire carbonate chemistry using statistical models. We found the monthly average pCO2 more than 50 % (approx. 640 μatm for August and September) above atmospheric equilibrium right above the mussel patch together with large diel variations of pCO2 within 24 h: 887 ± 331 μatm in August and 742 ± 281 μatm in September (mean ± SD). We observed important daily corrosiveness for calcium carbonates (Ωarag and Ωcalc < 1) centered on sunrise. On ... |
format |
Article in Journal/Newspaper |
author |
Saderne, Vincent Fietzek, Peer Aßmann, Steffen Körtzinger, Arne Hiebenthal, Claas |
spellingShingle |
Saderne, Vincent Fietzek, Peer Aßmann, Steffen Körtzinger, Arne Hiebenthal, Claas Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat |
author_facet |
Saderne, Vincent Fietzek, Peer Aßmann, Steffen Körtzinger, Arne Hiebenthal, Claas |
author_sort |
Saderne, Vincent |
title |
Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat |
title_short |
Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat |
title_full |
Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat |
title_fullStr |
Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat |
title_full_unstemmed |
Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat |
title_sort |
seagrass beds as ocean acidification refuges for mussels? high resolution measurements of pco2 and o2 in a zostera marina and mytilus edulis mosaic habitat |
publisher |
Copernicus Publications (EGU) |
publishDate |
2015 |
url |
https://oceanrep.geomar.de/id/eprint/29306/ https://oceanrep.geomar.de/id/eprint/29306/1/bgd-12-11423-2015.pdf https://doi.org/10.5194/bgd-12-11423-2015 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/29306/1/bgd-12-11423-2015.pdf Saderne, V., Fietzek, P., Aßmann, S., Körtzinger, A. and Hiebenthal, C. (2015) Seagrass beds as ocean acidification refuges for mussels? High resolution measurements of pCO2 and O2 in a Zostera marina and Mytilus edulis mosaic habitat. Open Access Biogeosciences Discussions, 12 (14). pp. 11423-11461. DOI 10.5194/bgd-12-11423-2015 <https://doi.org/10.5194/bgd-12-11423-2015>. doi:10.5194/bgd-12-11423-2015 |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bgd-12-11423-2015 |
_version_ |
1766158091926110208 |