Experiment on E. huxleyi strains in the Azores, Bergen and Canary Islands populations to CO2 ranges from 115 μatm to 3070 μatm ...

• Main Authors: Zhang, Yong, Bach, Lennart Thomas, Lohbeck, Kai T, Schulz, Kai Georg, Listmann, Luisa, Klapper, Regina, Riebesell, Ulf
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2018
• Subjects: Biological Impacts of Ocean Acidification BIOACID; North Atlantic; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.893100; https://doi.pangaea.de/10.1594/PANGAEA.893100

Although coccolithophore physiological responses to CO2-induced changes in seawater carbonate chemistry have been widely studied in the past, there is limited knowledge on the variability of physiological responses between populations from different areas. In the present study, we investigated the specific responses of growth, particulate organic (POC) and inorganic carbon (PIC) production rates of three populations of the coccolithophore Emiliania huxleyi from three regions in the North Atlantic Ocean (Azores: six strains, Canary Islands: five strains, and Norwegian coast near Bergen: six strains) to a CO2 partial pressure (pCO2) range from 120 to 2630µatm. Physiological rates of each population and individual strain increased with rising pCO2 levels, reached a maximum and declined thereafter. Optimal pCO2 for growth, POC production rates, and tolerance to low pH (i.e., high proton concentration) was significantly higher in an E. huxleyi population isolated from the Norwegian coast than in those isolated ... : Supplement to: Zhang, Yong; Bach, Lennart Thomas; Lohbeck, Kai T; Schulz, Kai Georg; Listmann, Luisa; Klapper, Regina; Riebesell, Ulf (2018): Population-specific responses in physiological rates of Emiliania huxleyi to a broad CO2 range. Biogeosciences, 15(12), 3691-3701 ...