Estimated thermal capacities for phytoplankton strains assessed in Anderson et al., Marine Phytoplankton Functional Types Exhibit Diverse Responses to Thermal Change (in review).
Metrics for thermal capacity were calculated for phytoplankton strains of known origin (coccolithophores = 24, cyanobacteria = 31, diatoms = 115, dinoflagellates = 38). Trait values (derived_traits.csv) were used to compute the TSM (Topt – Thabitat) and the WT (Tmax-Thabitat). Additionally, we defined a new metric termed the distance to the growth equivalence (DGE), which describes the distance (ºC) to the temperature at which growth is equivalent to that at the organism’s mean habitat temperature (Tµequiv – Thabitat), but on the opposite side of the reaction norm.
To estimate past and future habitat temperatures for each phytoplankton strain, we utilized an ensemble mean of modeled sea surface temperature (SST) projections from the Coupled Model Intercomparison Project phase 5 (CMIP5), available at a 1.25° resolution, and presented in the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (Collins et al., 2013). This data was extracted from the Royal Netherlands Meteorological Institute Climate Explorer portal (http://climexp.knmi.nl). Projections for sea surface temperature (SST) warming were calculated between a baseline (1950-1970) and future (2080-2100) time period under Representative Concentration Pathway RCP8.5.
All analyses were conducted in R 3.6.1 (2019).
Complete information on each isolate and their thermal traits can be found in related dataset, https://www.bco-dmo.org/dataset/839689.
Rynearson, T. A. (2021) Estimated thermal capacities for phytoplankton strains. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-02-04 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.839713.1 [access date]
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