Potential of restoration of gravel-sand pits for Bats

We found that bat activity in gravel-sand pit displays a range comparable to what is observed in numerous habitats, though it does appear both slightly lower than in bodies of water and greater than arable land. Bat activity appears increasing during the gravel-sand pit life's cycle. However, only quarries which had been rehabilitated for more than 10 years exhibited significantly greater bat activity than observed in the four other gravel-sand pit states. Our results, highlight the length of time required to detect obvious changes in the attractiveness of site being rehabilitated and the magnitude of the gap between the current state and the target (i.e. aquatic habitat). Such results should be take into account when sizing offsetting measures of quarries.