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148 results for “Telemetry”
Data from: Evaluation of Argos telemetry accuracy in the High-Arctic and implications for the estimation of home-range size
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Data from: Genomics and telemetry suggest a role for migration harshness in determining overwintering habitat choice, but not gene flow, in anadromous Arctic Char
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Dataset from: Are we telling the same story? Comparing inferences made from camera trap and telemetry data for wildlife monitoring
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Data from: Acoustic telemetry reveals cryptic residency of whale sharks
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Data from: Satellite telemetry reveals higher fishing mortality rates than previously estimated, suggesting overfishing of an apex marine predator
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Data from: Evaluation of acoustic telemetry grids for determining aquatic animal movement and survival
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Data from: Combined genetic and telemetry data reveal high rates of gene flow, migration, and long-distance dispersal potential in Arctic ringed seals (Pusa hispida)
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Data from: Evaluation of an acoustic telemetry transmitter designed to identify predation events
The field of acoustic telemetry has evolved rapidly and now permits the remote sensing of animal behaviour, movement, physiology and survival in environments and species not previously possible. However, an inability to detect when a telemetered animal is consumed by a predator can complicate accurate interpretation of telemetry data. Here, we describe efforts to test two generations of a novel prototype acoustic telemetry transmitter designed specifically to detect predation. Testing involved either staged predation events where tagged prey (Rainbow Trout Oncorhynchus mykiss and Yellow Perch Perca flavescens) were fed to captive Largemouth Bass Micropterus salmoides, or false positive testing where prey fish were tagged and held without risk of predation. Metrics of interest were (a) the rate of correctly identifying predation events, (b) signal lag (i.e. the time required to detect a predation event), (c) tag retention time in the predator's gut, and (d) the rate of false positive triggering in both live and dead prey fishes. Staged predation events were successfully identified in 61/65 and 52/55 trials for generation 1 and 2 tags, respectively. Signal lag time was reduced in generation 1 tags (generally between 1 - 9 hours) relative to generation 2 (3 - 29 hours); although signal lag was highly variable. A generalized linear mixed model indicated strong evidence that signal lag and tag retention were both negatively correlated with water temperature, but were not affected by prey species and only slightly by individual predator traits. There was preliminary evidence that prey size may be an important determinant of both signal lag and tag retention. False positives in live fish were absent after 120 days for generation 1 tags (n=31), however rates were significantly higher (10/44) after only 66 days for generation 2 tags. False positives in dead fish suggested that 20% of generation 2 predation tags would falsely trigger 2-3 days post-mortem. Testing of the novel predation tags was encouraging however further testing is recommended. Predation tags will be an important contribution to the field of acoustic telemetry; permitting improved data interpretation and less subjective estimates of predation rates in biotelemetry studies.
Carcharhinus amblyrhynchos and Carcharhinus albimarginatus underwater acoustic telemetry data - Chagos Archipelago 2014-2018
<p>A wide array of technologies are available for gaining insight into the movement of wild aquatic animals. Although acoustic telemetry may lack the fine-scale resolution of some satellite tracking technologies, the substantially longer battery life can yield important long-term data on behaviour and movement for low per-unit cost. Typically, however, receiver arrays are designed to maximise spatial coverage at the cost of positional accuracy leading to potentially longer detection gaps as individuals move out of range between monitored locations. This is particularly true when these technologies are deployed to monitor species in hard-to-access locations. We develop a novel approach to analysing acoustic telemetry data, using the timing and duration of gaps between animal detections to classify movement behaviours into 'restricted' or potential wider 'out of range' movements synonymous with longer distance dispersal. We apply this method to investigate spatial and temporal segregation of inferred movement patterns in two sympatric species of reef shark within a large, remote Marine Protected Area. Drivers of these movements were identified using generalised linear mixed models and multi-model inference. Species, diel period and season were significant predictors of 'out of range' movements. Silvertip sharks were overall more likely to undertake 'out of range' movements, compared to grey reef sharks, indicating spatial segregation, and corroborating previous stable isotope work between these two species. High individual variability in 'out of range' movements in both species was also identified. We present a novel gap analysis of telemetry data to help infer differential movement and space use patterns where acoustic coverage is imperfect and other tracking methods impractical. In remote locations, inference may be the best available tool and this approach shows that acoustic telemetry gap analysis can be used for comparative studies in fish ecology, or combined with other research techniques to better understand functional mechanisms driving behaviour.</p>
OAS Telemetry Demo
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Cochlear Response Telemetry and Hearing Preservation
ClinicalTrials.gov study NCT03134989. IPD Sharing: NO. Countries: 1. Publications: 0.
Surveillance Monitoring as an Alternative to Telemetry
ClinicalTrials.gov study NCT03039738. IPD Sharing: NO. Countries: 1. Publications: 0.
Telemetry for Chest Pain of Low Risk for Acute Coronary Syndrome Pts
ClinicalTrials.gov study NCT02330328. IPD Sharing: Not stated. Countries: 0. Publications: 8.
Trial of a Best-Practice Alert in the Electronic Medical Record to Reduce Unnecessary Telemetry Monitoring
ClinicalTrials.gov study NCT02529176. IPD Sharing: Not stated. Countries: 0. Publications: 5.
Data from: Evaluation of an acoustic telemetry transmitter designed to identify predation events
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Carcharhinus amblyrhynchos and Carcharhinus albimarginatus underwater acoustic telemetry data - Chagos Archipelago 2014-2018
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Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Satellite 2 telemetry R01
Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Satellite 2 Telemetry (PREFIRE_SAT2_0-BUS-TLM) contains positioning and pointing information for one of two PREFIRE polar orbiting CubeSats. Both CubeSats carry a PREFIRE Thermal Infrared Spectrometer (TIRS-PREFIRE), a push broom spectrometer with 63 channels measuring mid- and far-infrared (FIR) radiation from approximately 5 to 53 µm. Most polar emissions are in the FIR but have not been measured on a large scale. PREFIRE aims to fill knowledge gaps in the global energy budget by more accurately characterizing polar emissions. This information will then be assimilated into global circulation and other climate models to predict future climates more accurately.This collection contains the time, beta angle, orbit position and velocity, and the quaternion of PREFIRE Satellite 2 (PREFIRE-SAT2). Combined with a Digital Elevation Map, these telemeters geolocate PREFIRE data on the Earth’s surface. Data retrieval started June 29, 2024 and is ongoing. Geographic coverage is global, with the greatest concentration of data in the polar regions. This data is retrieved at a frequency of 1Hz and is available in CSV format. Positioning and pointing information for the sister satellite, PREFIRE-SAT1, can be found in the PREFIRE_SAT1_0-BUS-TLM collection.
BUV/Nimbus-4 Level 1 Radiance and Housekeeping Data in Telemetry Units V001 (BUVN4L1PDB) at GES DISC
The Nimbus-4 BUV Level-1 Radiance and Housekeeping Data in Telemetry Units collection contains the raw counts measured by the Backscatter Ultraviolet Spectrometer every 32 seconds at 12 wavelengths between 250 and 340 nm during the daylit orbit portion. The data collection also contains ephemeris data, experiment subsystem status information, and spacecraft housekeeping and orbit data. This data collection was used to create the Level 1 Radiance U-Tape or RUT product.The data were originally created on IBM 360 machines and archived on magnetic tapes. The data have been restored from the tapes and are now archived on disk in their original IBM binary file format. Each file contains about one orbit of data. The data files consist of 850 2-byte word records which are blocked in up to ten records. The first record in the file is the header record, followed by a series of data records, and ends with a trailer record. A typical orbit file is about 260 kB in size.The BUV instrument was operational from April 10, 1970 until May 6, 1977. In July 1972 the Nimbus-4 solar power array partially failed such that BUV operations were curtailed. Thus data collected in the later years was increasingly sparse, particularly in the equatorial region.This product was previously available from the NSSDC with the identifier ESAC-00024 (old ID 70-025A-05E).
Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Satellite 1 telemetry R01
Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Satellite 1 Telemetry (PREFIRE_SAT1_0-BUS-TLM) contains positioning and pointing information for one of two PREFIRE polar orbiting CubeSats. Both CubeSats carry a PREFIRE Thermal Infrared Spectrometer (TIRS-PREFIRE), a push broom spectrometer with 63 channels measuring mid- and far-infrared (FIR) radiation from approximately 5 to 53 µm. Most polar emissions are in the FIR but have not been measured on a large scale. PREFIRE aims to fill knowledge gaps in the global energy budget by more accurately characterizing polar emissions. This information will then be assimilated into global circulation and other climate models to predict future climates more accurately. This collection contains the time, beta angle, orbit position and velocity, and the quaternion of PREFIRE Satellite 1 (PREFIRE-SAT1). Combined with a Digital Elevation Map, these telemeters geolocate PREFIRE data on the Earth’s surface.Data retrieval started June 29, 2024 and is ongoing. Geographic coverage is global, with the greatest concentration of data in the polar regions. This data is retrieved at a frequency of 1Hz and is available in CSV format.Positioning and pointing information for the sister satellite, PREFIRE-SAT2, can be found in the PREFIRE_SAT2_0-BUS-TLM collection.
Tracking data (acoustic telemetry) of parrotfishes in the Red Sea
<p>Herbivorous fishes such as parrotfishes (Scaridae) play a crucial role in maintaining reef health by grazing macroalgae that would otherwise out-compete corals for space. Full appreciation of this contribution, however, depends on understanding the spatiotemporal patterns of parrotfish habitat utilization. Studies on spatial dynamics of parrotfish have been limited to short temporal spans (days to weeks) or coarse spatial resolution (kilometers). In this study, we used an underwater acoustic tracking system to monitor the movement and activity of 23 individuals, from three parrotfish species, for up to 520 days. We found that parrotfish exhibited surprisingly high degrees of sleeping and foraging site fidelity, between which they commuted daily. Consequently, diurnal activity was restricted throughout the entire study duration, to the same confined areas (7,155 ± 800 m<sup>2</sup>, mean ± SE). These high activity areas should be compared to the total home range area of 51,990 ± 7,174 m<sup>2</sup>. These results suggest that the ecological impact of individual parrotfish grazing is far more restricted than expected from their overall home range. The extremely constrained foraging areas raise concerns of the capacity of parrotfish to mitigate phase shifts in coral reefs by spatially adjusting their foraging behaviors. From a broader perspective, this study highlights the importance of looking beyond overall home range, to examine spatiotemporal patterns of specific activities.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.