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Effects of elevated CO2 and temperature on an intertidal harpacticoid copepod community

Effects of elevated CO2 and temperature on an intertidal harpacticoid copepod community
Effects of elevated CO2 and temperature on an intertidal harpacticoid copepod community
Warming and ocean acidification have been shown to have significant impacts on marine organisms. However, none studies have addressed the impact of these two stressors on harpacticoid copepod community structure. A mesocosm experiment was conducted to assess the potential interactive impact of different levels of elevated CO2 and temperature on an intertidal harpacticoid copepod ommunity. Artificial substrate units (ASUs) colonized by meiofauna from the extreme low intertidal zone were exposed to eight experimental treatments (four pH levels: 8.0, 7.7, 7.3 and 6.7, crossed with two temperature levels: 12 and 16C). After 60 days exposure communities were significantly affected by both stressors. The dominant harpacticoid species were mainly affected at treatments held at pH 6.7, but with divergent biological response patterns. At pH 6.7 Tisbe sp and Ectinosoma sp2 exhibited important density reductions, while considerable density increases were observed for Amphiascus longarticulatus and Amphiascoides golikovi. This study has demonstrated that elevated levels of CO2 and ocean warming may have substantial effects on the structure of harpacticoid communities. Importantly, the increase in malformations observed at pH 6.7 indicated that we need to consider sub-lethal effects that could have consequences for populations after long periods of exposure.
benthos, climate change, meiofauna, ocean acidification, warming
1054-3139
1159-1169
Sarmento, Visnu Cunha
cd796b2e-5568-4489-8046-9186bb2fb908
Santos, Paulo Jorge Parreira
fca1d596-832f-4a9c-90be-d6b70a09034e
Hale, Rachel
e5dfde12-523c-4000-ad0e-3431ffeafac1
Ingels, Jeroen
5dbcfa51-def6-499e-b322-7d8709e3a672
Widdicombe, Stephen
3ecf2b3e-6b3f-4f2f-86c5-baf070e8c82b
Sarmento, Visnu Cunha
cd796b2e-5568-4489-8046-9186bb2fb908
Santos, Paulo Jorge Parreira
fca1d596-832f-4a9c-90be-d6b70a09034e
Hale, Rachel
e5dfde12-523c-4000-ad0e-3431ffeafac1
Ingels, Jeroen
5dbcfa51-def6-499e-b322-7d8709e3a672
Widdicombe, Stephen
3ecf2b3e-6b3f-4f2f-86c5-baf070e8c82b

Sarmento, Visnu Cunha, Santos, Paulo Jorge Parreira, Hale, Rachel, Ingels, Jeroen and Widdicombe, Stephen (2017) Effects of elevated CO2 and temperature on an intertidal harpacticoid copepod community. ICES Journal of Marine Science, 74 (4), 1159-1169. (doi:10.1093/icesjms/fsw192).

Record type: Article

Abstract

Warming and ocean acidification have been shown to have significant impacts on marine organisms. However, none studies have addressed the impact of these two stressors on harpacticoid copepod community structure. A mesocosm experiment was conducted to assess the potential interactive impact of different levels of elevated CO2 and temperature on an intertidal harpacticoid copepod ommunity. Artificial substrate units (ASUs) colonized by meiofauna from the extreme low intertidal zone were exposed to eight experimental treatments (four pH levels: 8.0, 7.7, 7.3 and 6.7, crossed with two temperature levels: 12 and 16C). After 60 days exposure communities were significantly affected by both stressors. The dominant harpacticoid species were mainly affected at treatments held at pH 6.7, but with divergent biological response patterns. At pH 6.7 Tisbe sp and Ectinosoma sp2 exhibited important density reductions, while considerable density increases were observed for Amphiascus longarticulatus and Amphiascoides golikovi. This study has demonstrated that elevated levels of CO2 and ocean warming may have substantial effects on the structure of harpacticoid communities. Importantly, the increase in malformations observed at pH 6.7 indicated that we need to consider sub-lethal effects that could have consequences for populations after long periods of exposure.

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Sarmento_review.pdf - Accepted Manuscript
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More information

Accepted/In Press date: 10 October 2016
e-pub ahead of print date: 10 December 2016
Published date: May 2017
Keywords: benthos, climate change, meiofauna, ocean acidification, warming
Organisations: Ocean and Earth Science, Ocean Biochemistry & Ecosystems, Marine Biology & Ecology

Identifiers

Local EPrints ID: 403435
URI: http://eprints.soton.ac.uk/id/eprint/403435
ISSN: 1054-3139
PURE UUID: 1d459e79-daca-4fa4-a70a-33193c54aaaf
ORCID for Rachel Hale: ORCID iD orcid.org/0000-0001-5079-5954

Catalogue record

Date deposited: 30 Nov 2016 17:21
Last modified: 09 Jan 2022 05:58

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Contributors

Author: Visnu Cunha Sarmento
Author: Paulo Jorge Parreira Santos
Author: Rachel Hale ORCID iD
Author: Jeroen Ingels
Author: Stephen Widdicombe

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