Detection range of two acoustic transmitters in four reservoir habitat types using passive receivers

Abstract Background Recently, South Dakota Department of Game, Fish, and Parks (SDGFP), has undertaken a suite rigorous acoustic telemetry studies. The goals scope the individual research projects vary but all use same receiver array throughout Lake Sharpe in central Dakota. Prior to initiating studies, we sought describe detection probability receivers from representation habitats within Sharpe, We used both V9-2H transmitter V13-1L combination with VR2W 69 kHz passive [all Innovasea (Vemco)] determine four novel Sharpe. Both were moored at fixed distances (200 m 400, 600 m) for multiple consecutive days compared between type, distance, site, diel period using ANOVA following arcsine square-root transformation. Results found significant differences habitat types V9 V13 transmitters. Sites protected wind wave action, little boat traffic, had larger ranges areas that exposed host more traffic. site immediately downstream hydroelectric dam is high fetch popular boating, exhibited poorest types. transmitters consistently greater relative this difference was further distances. In general, higher nighttime daytime these dependent on transmitter, distance. Conclusions Using information presented, SDGFP modified their maximize ability detect Specifically, spacing reduced and/or expanded where 50% attained. More work needed identify those factors influence systems.