Data accompanying: Adjustments in fatty acid composition is a mechanism that can explain resilience to marine heatwaves and future ocean conditions in the habitat-forming seaweed Phyllospora comosa
Marine heatwaves are extreme events that can have profound and lasting impacts on marine species. Field observations have shown seaweeds to be highly susceptible to marine heatwaves, but the physiological drivers of this susceptibility are poorly understood. Furthermore, the effects of marine heatwaves in conjunction with ocean warming and acidification are yet to be investigated. To address this knowledge gap, we conducted a laboratory culture experiment in which we tested the growth and physiological responses of Phyllospora comosa juveniles from the southern extent of its range (43 - 31° S) to marine heatwaves, ocean warming and acidification. We used a "collapsed factorial design" in which marine heatwaves were superimposed on current (today's pH and temperature) and future (pH and temperature projected by 2100) ocean conditions. Responses were tested both during the heatwaves, and after a seven-day recovery period. Heatwaves reduced net photosynthetic rates in both current and future conditions, while respiration rates were elevated under heatwaves in the current conditions only. Following the recovery period, there was little evidence of heatwaves having lasting negative effects on growth, photosynthesis or respiration. Exposure to heatwaves, future ocean conditions or both caused an increase in the degree of saturation of fatty acids. This adjustment may have counteracted negative effects of elevated temperatures by decreasing membrane fluidity, which increases at higher temperatures. Furthermore, P. comosa appeared to down-regulate the energetically expensive carbon-concentrating mechanism (CCM) in the future conditions with a reduction in δ13 C values detected in these treatments. Any saved energy arising from this down-regulation was not invested in growth and was likely invested in the adjustment of fatty acid composition. This adjustment is a mechanism by which P. comosa and other seaweeds may tolerate the negative effects of ocean warming and marine heatwaves through benefits arising from ocean acidification.
Simple
Identification info
- Date (Creation)
- 2021-05-17
- Citation identifier
-
doi:10.25959/FYDA-XB84
- Title
- Information and documentation - Digital object identifier system
- Date (Publication)
- 2021-05-20T00:00:00
- Citation identifier
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ISO 26324:2012
- Citation identifier
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https://doi.org/10.25959/FYDA-XB84
Principal investigator
- Status
- Completed
Principal investigator
- Topic category
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- Biota
Extent
Temporal extent
- Time period
- 2018-01-01 2018-08-04
- Maintenance and update frequency
- Unknown
- Keywords (Theme)
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- Fatty acids
- Global ocean change
- Marine heatwaves
- Ocean acidification
- Ocean warming
- Physiology
- Seaweed
- NASA/GCMD Keywords, Version 8.5
- Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
- Keywords (Theme)
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- Multiple physiological parameters
- pH measurements
Resource constraints
- Classification
- Unclassified
Resource constraints
- Use limitation
- The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Website
-
http://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- Britton, D. (2021). Data accompanying: Adjustments in fatty acid composition is a mechanism that can explain resilience to marine heatwaves and future ocean conditions in the habitat-forming seaweed Phyllospora comosa. [Data set]. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). https://doi.org/10.25959/FYDA-XB84
- Language
- English
- Character encoding
- UTF8
- Supplemental Information
- Britton, D, Schmid, M, Noisette, F, et al. Adjustments in fatty acid composition is a mechanism that can explain resilience to marine heatwaves and future ocean conditions in the habitat‐forming seaweed Phyllospora comosa (Labillardière) C.Agardh. Glob Change Biol. 2020; 26: 3512– 3524. https://doi.org/10.1111/gcb.15052
Content Information
- Content type
- Physical measurement
- Description
- Growth rate, respiratory rate, photosynthetic rate, pigment concentrations, fatty acids, %C and %N, 13C isotopes [see file Britton_et_al_experimental_data.xlsx]
- Name
-
Multiple physiological parameters
- Name
- multiple units
- Description
- pH data on total scale during the experiment [see file pH_data_experiment.xlsx]
- Name
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pH measurements
- Name
- pH on total scale
Distribution Information
- Distribution format
-
-
Microsoft Excel Workbook
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Microsoft Excel Workbook
- OnLine resource
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DATA ACCESS - laboratory culture experiment under heatwave scenarios - physiological measurements [Britton_et_al_experiment_data.xlsx]
Resource lineage
- Statement
- Laboratory culture experiment, field logger deployments.
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
-
cda9c168-d408-48fd-8667-dd6d4fb21129
- Language
- English
- Character encoding
- UTF8
Point of contact
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/cda9c168-d408-48fd-8667-dd6d4fb21129
Point of truth URL of this metadata record
- Date info (Creation)
- 2021-05-20T15:44:47
- Date info (Revision)
- 2021-05-20T15:44:47
Metadata standard
- Title
- ISO 19115-3:2018