Descriptive statistics and results of General Linear Model (GLM) Analysis of Variance for echolocation calls of approach and terminal phases recorded from B. barbastellus approaching water or Perspex.

(*) = analysis done on log-transformed data. FMAXE = Frequency of Maximum Energy; SF, EF = Starting and Terminal Frequencies taken at -25 dB below the frequency of maximum energy. Interactions between factors are indicated with a ‘x’ sign. SD = standard deviation, d.f. = degrees of freedom; Adj. MS = adjusted mean squares; n.s. = not significant (P > 0.05).