Climate-driven shifts in kelp forest composition reduce carbon sequestration potential
The potential contribution of kelp forests to blue carbon sinks is currently of great interest but interspecific variance has received no attention. In the temperate Northeast Atlantic, kelp forest composition is changing due to climate-driven poleward range shifts of cold temperate Laminaria digita...
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ftzenodo:oai:zenodo.org:6874221 2023-05-15T17:41:39+02:00 Climate-driven shifts in kelp forest composition reduce carbon sequestration potential Wright, Luka Seamus Pessarrodona, Albert Foggo, Andy 2022-10-26 https://zenodo.org/record/6874221 https://doi.org/10.5281/zenodo.6874221 unknown doi:10.5061/dryad.m905qfv40 doi:10.5281/zenodo.6874220 https://zenodo.org/communities/dryad https://zenodo.org/record/6874221 https://doi.org/10.5281/zenodo.6874221 oai:zenodo.org:6874221 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Biogeography biogeography and macroecology carbon budget uncertainty carbon flux Climate Change climate change mitigation elemental stoichiometry C:N decay degradation decomposition Ecophysiology photophysiology erosion rate Laminariales marine forest biogeochemistry range shift kelp detritus photosynthesis biochemistry phenols carbon turnover carbon sequestration potential info:eu-repo/semantics/other other 2022 ftzenodo https://doi.org/10.5281/zenodo.687422110.5061/dryad.m905qfv4010.5281/zenodo.6874220 2023-03-11T01:39:07Z The potential contribution of kelp forests to blue carbon sinks is currently of great interest but interspecific variance has received no attention. In the temperate Northeast Atlantic, kelp forest composition is changing due to climate-driven poleward range shifts of cold temperate Laminaria digitata and L. hyperborea and warm temperate L. ochroleuca. To understand how this might affect the carbon sequestration potential of this ecosystem, we quantified interspecific differences in carbon export and decomposition alongside changes in detrital photosynthesis and biochemistry. We found that while warm temperate kelp exports up to 71% more carbon per plant, it decomposes up to 155% faster than its boreal congeners. Elemental stoichiometry and polyphenolic content cannot fully explain faster carbon turnover, which may be attributable to contrasting tissue toughness or unknown biochemical and structural defences. Faster decomposition causes the detrital photosynthetic apparatus of L. ochroleuca to be overwhelmed 20 d after export and lose integrity after 36 d, while detritus of cold temperate species maintains carbon assimilation. Depending on the photoenvironment, detrital photosynthesis could further exacerbate interspecific differences in decomposition via a potential positive feedback loop. Through compositional change such as the predicted prevalence of L. ochroleuca, ocean warming may therefore reduce the carbon sequestration potential of such temperate marine forests. Data are deposited as CSV files and can be opened with any data software. The code accompanying these data is deposited at github.com/lukaseamus/CSP alongside further usage information. We place no restrictions on data usage. Other/Unknown Material Northeast Atlantic Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biogeography biogeography and macroecology carbon budget uncertainty carbon flux Climate Change climate change mitigation elemental stoichiometry C:N decay degradation decomposition Ecophysiology photophysiology erosion rate Laminariales marine forest biogeochemistry range shift kelp detritus photosynthesis biochemistry phenols carbon turnover carbon sequestration potential |
spellingShingle |
Biogeography biogeography and macroecology carbon budget uncertainty carbon flux Climate Change climate change mitigation elemental stoichiometry C:N decay degradation decomposition Ecophysiology photophysiology erosion rate Laminariales marine forest biogeochemistry range shift kelp detritus photosynthesis biochemistry phenols carbon turnover carbon sequestration potential Wright, Luka Seamus Pessarrodona, Albert Foggo, Andy Climate-driven shifts in kelp forest composition reduce carbon sequestration potential |
topic_facet |
Biogeography biogeography and macroecology carbon budget uncertainty carbon flux Climate Change climate change mitigation elemental stoichiometry C:N decay degradation decomposition Ecophysiology photophysiology erosion rate Laminariales marine forest biogeochemistry range shift kelp detritus photosynthesis biochemistry phenols carbon turnover carbon sequestration potential |
description |
The potential contribution of kelp forests to blue carbon sinks is currently of great interest but interspecific variance has received no attention. In the temperate Northeast Atlantic, kelp forest composition is changing due to climate-driven poleward range shifts of cold temperate Laminaria digitata and L. hyperborea and warm temperate L. ochroleuca. To understand how this might affect the carbon sequestration potential of this ecosystem, we quantified interspecific differences in carbon export and decomposition alongside changes in detrital photosynthesis and biochemistry. We found that while warm temperate kelp exports up to 71% more carbon per plant, it decomposes up to 155% faster than its boreal congeners. Elemental stoichiometry and polyphenolic content cannot fully explain faster carbon turnover, which may be attributable to contrasting tissue toughness or unknown biochemical and structural defences. Faster decomposition causes the detrital photosynthetic apparatus of L. ochroleuca to be overwhelmed 20 d after export and lose integrity after 36 d, while detritus of cold temperate species maintains carbon assimilation. Depending on the photoenvironment, detrital photosynthesis could further exacerbate interspecific differences in decomposition via a potential positive feedback loop. Through compositional change such as the predicted prevalence of L. ochroleuca, ocean warming may therefore reduce the carbon sequestration potential of such temperate marine forests. Data are deposited as CSV files and can be opened with any data software. The code accompanying these data is deposited at github.com/lukaseamus/CSP alongside further usage information. We place no restrictions on data usage. |
format |
Other/Unknown Material |
author |
Wright, Luka Seamus Pessarrodona, Albert Foggo, Andy |
author_facet |
Wright, Luka Seamus Pessarrodona, Albert Foggo, Andy |
author_sort |
Wright, Luka Seamus |
title |
Climate-driven shifts in kelp forest composition reduce carbon sequestration potential |
title_short |
Climate-driven shifts in kelp forest composition reduce carbon sequestration potential |
title_full |
Climate-driven shifts in kelp forest composition reduce carbon sequestration potential |
title_fullStr |
Climate-driven shifts in kelp forest composition reduce carbon sequestration potential |
title_full_unstemmed |
Climate-driven shifts in kelp forest composition reduce carbon sequestration potential |
title_sort |
climate-driven shifts in kelp forest composition reduce carbon sequestration potential |
publishDate |
2022 |
url |
https://zenodo.org/record/6874221 https://doi.org/10.5281/zenodo.6874221 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
doi:10.5061/dryad.m905qfv40 doi:10.5281/zenodo.6874220 https://zenodo.org/communities/dryad https://zenodo.org/record/6874221 https://doi.org/10.5281/zenodo.6874221 oai:zenodo.org:6874221 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.687422110.5061/dryad.m905qfv4010.5281/zenodo.6874220 |
_version_ |
1766143333790384128 |