Comparison with data from other tropical
sites
The thermotolerance data gathered in the study presented here was
compared with published data for adult tropical evergreen trees from
other sites, i.e. excluding seedling/greenhouse studies. The final
compilation includes data from 106 species occurring in nine tropical
sites (Table 1). Some of these studies determined thermotolerance using
the Tcrit parameter derived from theF0 rise approach and others usedT50 derived from the Fv/Fm approach used in this study. Data for each of these
two metrics were treated separately in our analyses. Based on
climatological records from CRU (Osborn & Jones, 2014), we classified
the season during the sample collection period as ‘hot’ (three hottest
months of the year) and ‘cool’ (three coldest months of the year).
Similarly, from the precipitation data, we treated the sampling period
that took place during the months with rainfall < 100 mm as
‘dry’ and periods above 100 mm as ‘wet’. Hence, the classification of
‘dry’ is only a relative description of the site’s precipitation status
and does not necessarily indicate no precipitation. Data points for
aseasonal sites such as Iquitos were classified as ‘wet’. Details of the
forest regions and study sites can be found in Supporting Information
Table S2. The MuMIn package (Bartoń, 2018) was used to extract
conditional pseudo R2 for the complete model fits.