Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments
Anthropogenic stressors can alter the structure and functioning of infaunal communities, which are key drivers of the carbon cycle in marine soft sediments. Nonetheless, the compounded effects of anthropogenic stressors on carbon fluxes in soft benthic systems remain largely unknown. Here, we invest...
Published in: | Global Change Biology |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2019
|
Subjects: | |
Online Access: | http://plymsea.ac.uk/id/eprint/8251/ http://plymsea.ac.uk/id/eprint/8251/1/Ravaglioli%20et%20al._inpress_GCB_Ocean%20Acidification.pdf https://doi.org/10.1111/gcb.14806 |
id |
ftplymouthml:oai:plymsea.ac.uk:8251 |
---|---|
record_format |
openpolar |
spelling |
ftplymouthml:oai:plymsea.ac.uk:8251 2023-05-15T17:50:39+02:00 Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments Ravaglioli, C Bulleri, F Ruhl, S McCoy, SJ Findlay, HS Widdicombe, S Queiros, AM 2019-12-19 text http://plymsea.ac.uk/id/eprint/8251/ http://plymsea.ac.uk/id/eprint/8251/1/Ravaglioli%20et%20al._inpress_GCB_Ocean%20Acidification.pdf https://doi.org/10.1111/gcb.14806 en eng Wiley http://plymsea.ac.uk/id/eprint/8251/1/Ravaglioli%20et%20al._inpress_GCB_Ocean%20Acidification.pdf Ravaglioli, C; Bulleri, F; Ruhl, S; McCoy, SJ; Findlay, HS; Widdicombe, S; Queiros, AM. 2019 Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments. Global Change Biology, 25 (12). 4165-4178. https://doi.org/10.1111/gcb.14806 <https://doi.org/10.1111/gcb.14806> cc_by_nc_4 CC-BY-NC Publication - Article PeerReviewed 2019 ftplymouthml https://doi.org/10.1111/gcb.14806 2022-09-13T05:49:24Z Anthropogenic stressors can alter the structure and functioning of infaunal communities, which are key drivers of the carbon cycle in marine soft sediments. Nonetheless, the compounded effects of anthropogenic stressors on carbon fluxes in soft benthic systems remain largely unknown. Here, we investigated the cumulative effects of ocean acidification (OA) and hypoxia on the organic carbon fate in marine sediments, through a mesocosm experiment. Isotopically labelled macroalgal detritus (13C) was used as a tracer to assess carbon incorporation in faunal tissue and in sediments under different experimental conditions. In addition, labelled macroalgae (13C), previously exposed to elevated CO2, were also used to assess the organic carbon uptake by fauna and sediments, when both sources and consumers were exposed to elevated CO2. At elevated CO2, infauna increased the uptake of carbon, likely as compensatory response to the higher energetic costs faced under adverse environmental conditions. By contrast, there was no increase in carbon uptake by fauna exposed to both stressors in combination, indicating that even a short‐term hypoxic event may weaken the ability of marine invertebrates to withstand elevated CO2 conditions. In addition, both hypoxia and elevated CO2 increased organic carbon burial in the sediment, potentially affecting sediment biogeochemical processes. Since hypoxia and OA are predicted to increase in the face of climate change, our results suggest that local reduction of hypoxic events may mitigate the impacts of global climate change on marine soft‐sediment systems. Article in Journal/Newspaper Ocean acidification Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Global Change Biology 25 12 4165 4178 |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
English |
description |
Anthropogenic stressors can alter the structure and functioning of infaunal communities, which are key drivers of the carbon cycle in marine soft sediments. Nonetheless, the compounded effects of anthropogenic stressors on carbon fluxes in soft benthic systems remain largely unknown. Here, we investigated the cumulative effects of ocean acidification (OA) and hypoxia on the organic carbon fate in marine sediments, through a mesocosm experiment. Isotopically labelled macroalgal detritus (13C) was used as a tracer to assess carbon incorporation in faunal tissue and in sediments under different experimental conditions. In addition, labelled macroalgae (13C), previously exposed to elevated CO2, were also used to assess the organic carbon uptake by fauna and sediments, when both sources and consumers were exposed to elevated CO2. At elevated CO2, infauna increased the uptake of carbon, likely as compensatory response to the higher energetic costs faced under adverse environmental conditions. By contrast, there was no increase in carbon uptake by fauna exposed to both stressors in combination, indicating that even a short‐term hypoxic event may weaken the ability of marine invertebrates to withstand elevated CO2 conditions. In addition, both hypoxia and elevated CO2 increased organic carbon burial in the sediment, potentially affecting sediment biogeochemical processes. Since hypoxia and OA are predicted to increase in the face of climate change, our results suggest that local reduction of hypoxic events may mitigate the impacts of global climate change on marine soft‐sediment systems. |
format |
Article in Journal/Newspaper |
author |
Ravaglioli, C Bulleri, F Ruhl, S McCoy, SJ Findlay, HS Widdicombe, S Queiros, AM |
spellingShingle |
Ravaglioli, C Bulleri, F Ruhl, S McCoy, SJ Findlay, HS Widdicombe, S Queiros, AM Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments |
author_facet |
Ravaglioli, C Bulleri, F Ruhl, S McCoy, SJ Findlay, HS Widdicombe, S Queiros, AM |
author_sort |
Ravaglioli, C |
title |
Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments |
title_short |
Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments |
title_full |
Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments |
title_fullStr |
Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments |
title_full_unstemmed |
Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments |
title_sort |
ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments |
publisher |
Wiley |
publishDate |
2019 |
url |
http://plymsea.ac.uk/id/eprint/8251/ http://plymsea.ac.uk/id/eprint/8251/1/Ravaglioli%20et%20al._inpress_GCB_Ocean%20Acidification.pdf https://doi.org/10.1111/gcb.14806 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://plymsea.ac.uk/id/eprint/8251/1/Ravaglioli%20et%20al._inpress_GCB_Ocean%20Acidification.pdf Ravaglioli, C; Bulleri, F; Ruhl, S; McCoy, SJ; Findlay, HS; Widdicombe, S; Queiros, AM. 2019 Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments. Global Change Biology, 25 (12). 4165-4178. https://doi.org/10.1111/gcb.14806 <https://doi.org/10.1111/gcb.14806> |
op_rights |
cc_by_nc_4 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1111/gcb.14806 |
container_title |
Global Change Biology |
container_volume |
25 |
container_issue |
12 |
container_start_page |
4165 |
op_container_end_page |
4178 |
_version_ |
1766157508188045312 |