A review of detection range testing in aquatic passive acoustic telemetry studies

2013 ◽  
Vol 24 (1) ◽  
pp. 199-218 ◽  
Author(s):  
S. T. Kessel ◽  
S. J. Cooke ◽  
M. R. Heupel ◽  
N. E. Hussey ◽  
C. A. Simpfendorfer ◽  
...  
Keyword(s):  
Acoustic Telemetry ◽  
Detection Range ◽  
Range Testing ◽  
Passive Acoustic

scholarly journals Detection range and efficiency of acoustic telemetry receivers in a connected wetland system

Hydrobiologia ◽  
2021 ◽  
Vol 848 (8) ◽  
pp. 1825-1836
Author(s):  
Emily R. Winter ◽  
Andrew M. Hindes ◽  
Steve Lane ◽  
J. Robert Britton
Keyword(s):  
Water Temperature ◽  
Acoustic Telemetry ◽  
Detection Efficiency ◽  
Acoustic Noise ◽  
Chlorophyll Concentration ◽  
Temperature Conductivity ◽  
Detection Range ◽  
Receiver Performance ◽  
Range Testing

AbstractAcoustic telemetry is an important tool for assessing the behavioural ecology of aquatic animals, but the performance of receivers can vary spatially and temporally according to changes in environmental gradients. Studies testing detection efficiency and/ or detection range are, therefore, important for data interpretation, although the most thorough range-testing approaches are often costly or impractical, such as the use of fixed sentinel tags. Here, stationary tag data (from study animals that had either died or expelled their tags) provided a substitute for the long-term monitoring of receiver performance in a wetland environment and was complemented by periodic boat-based range testing, with testing of the effects of environmental variables (water temperature, conductivity, transparency, precipitation, wind speed, acoustic noise) on detection efficiency (DE) and detection range (DR). Stationary tag DE was highly variable temporally, the most influential factors being water temperature and precipitation. Transparency was a strong predictor of DR and was dependent on chlorophyll concentration (a surrogate measure of algal density). These results highlight the value of stationary tag data in assessments of acoustic receiver performance. The high seasonal variability in DE and DR emphasises the need for long-term receiver monitoring to enable robust conclusions to be drawn from telemetry data.

scholarly journals Detection Range of Acoustic Receivers in a Large Hydropower Reservoir

Fishes ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 60
Author(s):  
Amanda Babin ◽  
Lauren Fitzpatrick ◽  
Tommi Linnansaari ◽  
R. Allen Curry
Keyword(s):  
Low Power ◽  
High Power ◽  
Acoustic Telemetry ◽  
Small Fish ◽  
Substrate Type ◽  
Detection Range ◽  
Site Specific ◽  
Reliable Detection ◽  
Range Testing ◽  
Hydropower Reservoir

Acoustic telemetry manufacturers report estimated detection ranges under idealized conditions, but environmental conditions such as water depth, substrate type, and turbulence can affect the range of reliable detection. Range testing of low (Vemco V7 136 dB re 1µPa@1m) and high power (V13 147 dB re 1µPa@1m) acoustic transmitters (tags) was performed near a hydropower generating station and its associated reservoir using both active (mobile; VR100) and passive (stationary; VR2W/VR2Tx) receivers. Low power tags are typically used to track small fish such as juvenile Atlantic salmon (Salmo salar), whereas high power tags are typically used to track larger fish such as adult salmon. The results found herein were applied to concurrent salmon telemetry studies. Detection ranges of the low power tags were within 246–351 ± 20–70 m (mean ± SE), and the high power tags were within 537–1106 ± 53–272 m. Observed detection ranges were comparable or higher to manufacturer estimates for both tag types being detected by passive receivers, and were lower than expected for both tag types being detected by active receivers. Passive receivers were further tested by mooring a fixed sentinel tag (low power) on a receiver line at the hydropower site for 50 days. The sentinel tag detection range of 212 m was less than the expected range of 280–292 m, and was not found to be significantly impacted by wind speed. There was evidence of a hydropower effect on detection probability (up to 95% reduction) of both tag types for the active receiver, and detection ranges were significantly lower at the hydropower site than the reservoir site for the high power tag. The results of this study give insight to the initial design of acoustic telemetry studies beyond what can be gathered from manufacturer’s estimates, but rather near hydropower facilities and within large reservoirs; however, detection ranges reported herein do not replace the importance of range testing in site-specific conditions.

scholarly journals Stingray Habitat Use Is Dynamically Influenced by Temperature and Tides

2022 ◽  
Vol 8 ◽  
Author(s):  
Chantel Elston ◽  
Paul D. Cowley ◽  
Rainer G. von Brandis ◽  
James Lea
Keyword(s):  
Habitat Use ◽  
Acoustic Telemetry ◽  
Monsoon Season ◽  
Abiotic Factors ◽  
Environmental Drivers ◽  
Shallow Waters ◽  
Shallow Marine ◽  
Tidal Cycles ◽  
Management Plans ◽  
Passive Acoustic

Abiotic factors often have a large influence on the habitat use of animals in shallow marine environments. Specifically, tides may alter the physical and biological characteristics of an ecosystem while changes in temperature can cause ectothermic species to behaviorally thermoregulate. Understanding the contextual and relative influences of these abiotic factors is important in prioritizing management plans, particularly for vulnerable faunal groups like stingrays. Passive acoustic telemetry was used to track the movements of 60 stingrays at a remote and environmentally heterogeneous atoll in Seychelles. This was to determine if habitat use varied over daily, diel and tidal cycles and to investigate the environmental drivers behind these potential temporal patterns. Individuals were detected in the atoll year-round, but the extent of their movement and use of multiple habitats increased in the warmer NW-monsoon season. Habitat use varied over the diel cycle, but was inconsistent between individuals. Temperature was also found to influence stingray movements, with individuals preferring the deeper and more thermally stable lagoon habitat when extreme (hot or cold) temperature events were observed on the flats. Habitat use also varied over the tidal cycle with stingrays spending a higher proportion of time in the lagoon during the lowest tides, when movement on the flats were constrained due to shallow waters. The interplay of tides and temperature, and how these varied across diel and daily scales, dynamically influenced stingray habitat use consistently between three species in an offshore atoll.

Seasonal home range shifts of the Siberian taimen (Hucho taimenPallas 1773): Evidence from passive acoustic telemetry in the Onon River and Balj tributary (Amur River basin, Mongolia)

2016 ◽  
Vol 101 (5-6) ◽  
pp. 147-159 ◽  
Author(s):  
Andrew Kaus ◽  
Olaf Büttner ◽  
Michael Schäffer ◽  
Gankhuyag Balbar ◽  
Purevdorj Surenkhorloo ◽  
...  
Keyword(s):  
Home Range ◽  
River Basin ◽  
Acoustic Telemetry ◽  
Range Shifts ◽  
Amur River Basin ◽  
Amur River ◽  
Passive Acoustic

scholarly journals A practical method to account for variation in detection range in acoustic telemetry arrays to accurately quantify the spatial ecology of aquatic animals

2019 ◽  
Vol 11 (1) ◽  
pp. 82-94 ◽  
Author(s):  
Jacob W. Brownscombe ◽  
Lucas P. Griffin ◽  
Jacqueline M. Chapman ◽  
Danielle Morley ◽  
Alejandro Acosta ◽  
...  
Keyword(s):  
Acoustic Telemetry ◽  
Spatial Ecology ◽  
Practical Method ◽  
Aquatic Animals ◽  
Detection Range

scholarly journals Potential detection of illegal fishing by passive acoustic telemetry

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
David M. Tickler ◽  
Aaron B. Carlisle ◽  
Taylor K. Chapple ◽  
David J. Curnick ◽  
Jonathan J. Dale ◽  
...  
Keyword(s):  
Acoustic Telemetry ◽  
Illegal Fishing ◽  
Passive Acoustic

Short- and long-term movement patterns in the freshwater whipray (Himantura dalyensis) determined by the signal processing of passive acoustic telemetry data

2012 ◽  
Vol 63 (4) ◽  
pp. 341 ◽  
Author(s):  
Hamish A. Campbell ◽  
Matthew Hewitt ◽  
Matthew E. Watts ◽  
Stirling Peverell ◽  
Craig E. Franklin
Keyword(s):  
Signal Processing ◽  
Acoustic Telemetry ◽  
Movement Patterns ◽  
Wet Season ◽  
Aquatic Animals ◽  
Location Data ◽  
Linear Movement ◽  
Passive Acoustic ◽  
Free Ranging ◽  
Periodic Components

Patterns of movement in aquatic animals reflect ecologically important behaviours. Cyclical changes in the abiotic environment influence these movements, but when multiple processes occur simultaneously, identifying which is responsible for the observed movement can be complex. Here we used acoustic telemetry and signal processing to define the abiotic processes responsible for movement patterns in freshwater whiprays (Himantura dalyensis). Acoustic transmitters were implanted into the whiprays and their movements detected over 12 months by an array of passive acoustic receivers, deployed throughout 64 km of the Wenlock River, Qld, Australia. The time of an individual’s arrival and departure from each receiver detection field was used to estimate whipray location continuously throughout the study. This created a linear-movement-waveform for each whipray and signal processing revealed periodic components within the waveform. Correlation of movement periodograms with those from abiotic processes categorically illustrated that the diel cycle dominated the pattern of whipray movement during the wet season, whereas tidal and lunar cycles dominated during the dry season. The study methodology represents a valuable tool for objectively defining the relationship between abiotic processes and the movement patterns of free-ranging aquatic animals and is particularly expedient when periods of no detection exist within the animal location data.

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