The relationship between species’ traits and their functional
roles
None of the bird traits that we investigated were significantly related
to the functional roles of species in the network structure (Fig.5). The
relationships between the network parameters and fruit traits showed
that only fruit color had significant effects on species
strength (Pearson correlation
coefficient: r=0.666, P =0.013) (Fig.6), and the species strength
of plants with black fruits (2.69±1.25) was significantly greater than
that of plants with red fruits (0.358±0.057). Thus, only fruit color
could explain species strength; that is, plants with black fruits had
greater species strength.
Fig.5 Correlation matrix between network parameters and bird traits
Fig.6 Correlation matrix between network parameters and plant traits