Drivers of species mean elevational range size
In this study, we found the annual temperature range and normalized
vegetation index were the most essential variables for species mean
elevational range size, while the habitat heterogeneity had little
influence on the species mean elevational range size. The annual
temperature range was negatively correlated with species mean
elevational range size, and normalized vegetation index was positively
correlated with species mean elevational range size. These results
indicated that
the
climate variability hypothesis, the ambient energy hypothesis, and the
habitat heterogeneity hypothesis failed to predict the breeding birds’
mean elevational range size pattern in Lebu Valley.