Comparison of fine-scale acoustic monitoring systems using home range size of a demersal fish |
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Authors: | Kelly S Andrews Nick Tolimieri Greg D Williams Jameal F Samhouri Chris J Harvey and Phillip S Levin |
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Institution: | (1) Northwest Fisheries Science Center, 2725 Montlake Blvd E, Seattle, WA 98112, USA |
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Abstract: | We compared the results from fixed acoustic transmitters and transmitters implanted in lingcod Ophiodon elongatus provided by two fine-scale passive acoustic monitoring systems: the older Vemco? Radio Acoustic Positioning (VRAP) system and the newer VR2W Positioning System (VPS) with either three or four receivers.
The four-receiver VPS method calculated five times more positions of lingcod than VRAP and more than twice as many as the
three-receiver VPS. Calculated positions of fixed transmitters were less precise with VRAP than either VPS approach. Measurements
of home range for lingcod were similar between the four-receiver VPS and VRAP, which were both greater than the three-receiver
VPS. Comparisons varied when lingcod were in/near complex habitats. As new technology develops, it is important to understand
how new methods compare to previous methods. This may be important when describing patterns of movement or habitat use in
the context of changes in habitat or management efforts. |
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