Community biomass
Community biomass showed higher variation among sites (Figure 2B) with
collection-specific medians ranging from 22.3 to 6,729 mg dry mass per
m2. The global median of the posterior samples from
the hierarchical Bayesian model was 1,333 mg dry mass per
m2 (95% CrI (247, 10 929)). Community biomass had a
95% probability of being positively related to mean annual temperature
(coefficient estimate = 0.04 (CrI (-0.008, 0.09); Table 2). After
exponentiating, this indicates that each unit increase in mean annual
temperature causes an average of a 4% increase in biomass. From the
posterior predictive distribution, median biomass values ranged from a
low of 285 mg dry mass per m2 at site CARI (mean
annual temperature = -1°C) to a high of 11,309 mg dry mass per
m2 at site LEWI (mean annual temperature = 12°C,
Figure 3B).