Deterrent treatment was marginally non-significant for P . pygmaeus , but the ultrasound only treatment was significant when compared to radar in post-hoc tests.
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Comparing acoustic and radar deterrence methods as mitigation measures to reduce human-bat impacts and conservation conflicts.
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The sentences
However, the acoustic data does not show such a clear trend, possibly due to unavoidable noise in the data from bat echolocation calls being recorded outside the range of the deterrent and small sample sizes that were unavoidable due to the deterrent masking echolocation calls at some sites.