Insights into Strata Use of Forest Animals Using the 'Canopy Effect'

Stable carbon isotope ratios (delta(13)C) of plants increase linearly from ground to canopy. Accordingly, I used d delta(13)C for estimating strata use of fig-eating bats. Data suggest that, overall, bats commuted at lower but fed at higher forest strata, and that small bats foraged at lower forest strata than large bats.