Seawater carbonate chemistry and egg production and hatching success of copepod Acartia tonsa


Predicting the response of marine animals to climate change is hampered by a lack of multigenerational studies on evolutionary adaptation, particularly to combined ocean warming and acidification (OWA). We provide evidence for rapid adaptation to OWA in the foundational copepod species, Acartia tonsa, by assessing changes in population fitness on the basis of a comprehensive suite of life-history traits, using an orthogonal experimental design of nominal temperature (18 °C, 22 °C) and pCO2 (400, 2,000 µatm) for 25 generations (1 year). Egg production and hatching success initially decreased under OWA, resulting in a 56% reduction in fitness. However, both traits recovered by the third generation, and average fitness was reduced thereafter by only 9%. Antagonistic interactions between warming and acidification in later generations decreased survival, thereby limiting full fitness recovery. Our results suggest that such interactions constrain evolutionary rescue and add complexity to predictions of the responses of animal populations to climate change.

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-04-06.

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Metadata Access
Creator Dam, H G; deMayo, James A; Park, Gihong; Norton, Lydia; He, Xuejia; Finiguerra, Michael B; Baumann, Hannes; Brennan, Reid S; Pespeni, Melissa H
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Contributor Yang, Yan
Publication Year 2021
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 101800 data points
Discipline Earth System Research
Spatial Coverage (-72.002 LON, 41.321 LAT)
Temporal Coverage Begin 2016-06-01T00:00:00Z
Temporal Coverage End 2016-06-30T00:00:00Z