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Measurements on T-POD detection of harbour porpoise,
Phocoena phocoena (Tougaard et al) showed detections in
shallow water out to
approximately 300 metres from the POD, with a detection function equivalent
to 100% detection within approximately a 70 to 100 metre radius. The C-POD
is likely to be similar.
Dolphins: with louder clicks have a greater range and
Philpott et al in Ireland showed detections to approximately
1200 metres of bottlenose dolphins (Tursiops truncatus), moving
along the coast of the Shannon Estuary. The C-POD is likely to give a
greater detection range and have many fewer undetected groups, as this
occurred when the dolphin clicks were too broadband for the T-POD to
log. |