Elemental stoichiometry for Emiliania huxleyi across a range of 12 temperatures from 8.5-28.6C

Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu 2020-04-30T13:10:11Z 2020-04-30T13:10:11Z 2019-11-26 2020-04-30

Dataset: Ehux elemental composition across thermal range
This dataset includes elemental stoichiometry for Emiliania huxleyi across a range of 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. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/782921
NSF Division of Ocean Sciences (NSF OCE) OCE-1538525

Thermal Performance Curves; Growth Rates; Emiliania huxleyi; climate change; calcification; elemental quotas; Dataset

Open access content. Open access content
Creative Commons Attribution 4.0
https://creativecommons.org/licenses/by/4.0

laboratory experiment
20170101 - 20171031 (UTC)
en_US

MBW oai:darchive.mblwhoilibrary.org:1912/25719
10.26008/1912/bco-dmo.782921.1
1195523274

MARINE BIOLOGICAL LABORATORY/WOODS HOLE
From OAIster®, provided by the OCLC Cooperative.

edsoai.on1195523274