Dataset: Ehux growth rates for thermal response curve
Data Citation:
Hutchins, D. (2020) Growth rates for Emiliania huxleyi thermal response curve across 12 temperatures from 8.5-28.6C. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2019-11-26 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.782911.1 [access date]
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This dataset is licensed under Creative Commons Attribution 4.0.
If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.
DOI:10.26008/1912/bco-dmo.782911.1
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Temporal Extent: 2017-01-01 - 2017-10-31
Project:
How does intensity and frequency of environmental variability affect phytoplankton growth?
(Enviro variability and phytoplankton growth)
Principal Investigator:
David A. Hutchins (University of Southern California, USC)
BCO-DMO Data Manager:
Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)
Version:
1
Version Date:
2019-11-26
Restricted:
No
Validated:
No
Current State:
Final no updates expected
Growth rates for Emiliania huxleyi thermal response curve across 12 temperatures from 8.5-28.6C
Abstract:
This dataset presents growth rates for Emiliania huxleyi thermal response curve across 12 temperatures from 8.5-28.6C.Global warming will be combined with predicted increases in thermal variability in the future surface ocean, but how temperature dynamics will affect phytoplankton biology and biogeochemistry is largely unknown. Here, we examine the responses of the globally important marine coccolithophore Emiliania huxleyi to thermal variations at two frequencies (1 d and 2 d) at low (18.5 °C) and high (25.5 °C) mean temperatures. Elevated temperature and thermal variation decreased growth, calcification and physiological rates, both individually and interactively. The 1 d thermal variation frequencies were less inhibitory than 2 d variations under high temperatures, indicating that high-frequency thermal fluctuations may reduce heat-induced mortality and mitigate some impacts of extreme high-temperature events. Cellular elemental composition and calcification was significantly affected by both thermal variation treatments relative to each other and to the constant temperature controls. The negative effects of thermal variation on E. huxleyi growth rate and physiology are especially pronounced at high temperatures. These responses of the key marine calcifier E. huxleyi to warmer, more variable temperature regimes have potentially large implications for ocean productivity and marine biogeochemical cycles under a future changing climate.