Abstract:
Due to the constant thermal environment and lower carbonate saturation state of the Southern Ocean, Antarctic marine ectotherms are expected to be amongst the most sensitive to the combined stressors of warming and ocean acidification (OA).To investigate their long term acclimation capacity, adult Antarctic sea urchins, Sterechinus neumayeri, were incubated for 40 months under four treatments:
1) T cur - 0.3 deg C (present day) and pH 7.8 (moderate acidification)
2) pH cur 1.7 deg C (predicted temperature) and pH 8.1 (current pH)
3) pH-0.3 1.9 deg C and pH 7.8
4) pH-0.5 2.2 deg C and pH7.5 (high acidification)
The energy budget (energy absorbed, energy lost through respiration and as nitrogenous waste) and growth parameters (scope for growth, mass of somatic and gonad tissues and the CHN content of gonad) were measured through the duration of two 21 day feeding and food processing cycles.Energy budgets were fully acclimated to OA treatments but there was only partial acclimation to temperature. Although metabolic rate was lower in the ambient temperature treatment (-0.3 compared to 2 deg C) and more energy was absorbed from food, there was no significant difference in the scope for growth between treatments. S. neumayeri can acclimate to predicted near future OA and is resilient to predicted temperature conditions.
Keywords:
doi://10.5285/f8f45574-ee63-4dcb-bdf6-8c291bb65793
| Use Constraints: | This data is released under the UK Open Government Licence - Version 2.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/2/ |
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| Creation Date: | 2014-03-24 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | Dr Simon Morley |
| Role(s) | Technical Contact, Investigator |
| Organisation | British Antarctic Survey |
| Name | Mr Peter J Kirsch |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Dr Coleen C Suckling |
| Role(s) | Investigator |
| Organisation | Bangor University |
| Parent Dataset: | N/A |
| Reference: | Energy budget acclimation to long term combined pH and temperature stressors in adult Antarctic urchins, Sterechinus neumayeri Simon A. Morley*(1), Coleen C. Suckling(1,2), Melody S. Clark(1), Lloyd S. Peck(1) and Emma L. Cross(1,3) 1. British Antarctic Survey; High Cross, Madingley Road; Cambridge, CB3 0ET 2. Bangor University; School of Ocean Sciences, Bangor, Gwynedd, LL57 2DG 3. University of Cambridge; Department of Earth Sciences, Cambridge, CB2 3EQ |
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| Temporal Coverage: | |
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| Start Date | 2012-09-25 |
| End Date | 2012-11-14 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -66.43333 |
| Northernmost | -66.43333 |
| Longitude | |
| Westernmost | -67.86667 |
| Easternmost | -67.86667 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |