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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
ISO 26324:2012

Citation identifier
https://doi.org/10.25959/FYDA-XB84

Principal investigator

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Britton, Damon
ORCID ID >

Status
Completed

Principal investigator

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Britton, Damon
IMAS - Hobart
Private Bag 129
Hobart
Tasmania
7001
Australia
ORCID ID >

Topic category
  • Biota

Extent

N
S
E
W


Temporal extent

Time period
2018-01-01 2018-08-04
Maintenance and update frequency
Unknown
Keywords (Theme)
  • Fatty acids
  • Global ocean change
  • Marine heatwaves
  • Ocean acidification
  • Ocean warming
  • Physiology
  • Seaweed
NASA/GCMD Keywords, Version 8.5
  • EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PROTISTS | MACROALGAE (SEAWEEDS)
Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
  • Phycology (incl. Marine Grasses)
  • Marine and Estuarine Ecology (incl. Marine Ichthyology)
Keywords (Theme)
  • 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
pH measurements

Name
pH on total scale

Distribution Information

Distribution format
  • Microsoft Excel Workbook

OnLine resource
DATA ACCESS - laboratory culture experiment under heatwave scenarios - physiological measurements [Britton_et_al_experiment_data.xlsx]

OnLine resource
DATA ACCESS - field measurements of pH from loggers [Field_pH.xlsx]

OnLine resource
DATA ACCESS - pH measurements in laboratory experiment under heatwave scenarios [pH_data_experiment.xlsx]

OnLine resource
SUPPLEMENTARY INFO - logged temperature data from temperature laboratory manipulation experiment [Temp_data_experiment.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

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - IMAS Data Manager

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
 
 

Overviews

Spatial extent

N
S
E
W


Keywords

Fatty acids Global ocean change Marine heatwaves Multiple physiological parameters Ocean acidification Ocean warming Physiology Seaweed pH measurements
NASA/GCMD Keywords, Version 8.5
EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PROTISTS | MACROALGAE (SEAWEEDS)

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