History of wildlife tracking technology

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The history of wildlife tracking technology involves the evolution of technologies that have been used to monitor, track, and locate many different types of wildlife. Many individuals have an interest in tracking wildlife, including biologists, scientific researchers, and conservationists. Biotelemetry is "the instrumental technique for gaining and transmitting information from a living organism and its environment to a remote observer". [1]

Contents

1800s

Bird banding

John James Audubon, a French American naturalist, ornithologist, and painter was the first person that attempted to paint and describe all the birds of America. In 1803, he conducted the first known bird banding experiment in North America and tied strings around the legs of Eastern Phoebes. He observed that the birds would return to the same nesting site every year, demonstrating philopatry.

Bird banding was used in 1890 by Hans Christian C. Mortensen, a Danish biologist. Birds can be captured by hand, using mist-nets, cannon-nets, or cage traps. A band that is typically made out of aluminum, or coloured plastic is attached to the leg of the bird. Each band has a unique identification code so that when birds are later recaptured, individuals can be identified. [2] Mist-nets became widely available in the early 1950s, which dramatically increased the recovery of marked birds.

Early 1930s

Scale clipping

The first scientific paper on scale clipping was published in 1933. [3] Sharp dissecting or microsurgical scissors are used to clip specific ventrals on snakes. A serial enumeration system is used so that individuals can be identified based on the scarring pattern. [4]

1940s

Radar

During World War II, birds that were migrating caused "phantom signals" or "radar angels" to appear on radar screens. [5] Since then, radar has become a widely used method for studying migrating organisms. Early radar technologies, such as WSR-57 (Weather Surveillance Radar - 1957), have been replaced by the Next Generation Weather Radar program (NEXRAD) which was installed in segments during the 1990s. Also known as WSR-88D (Weather Surveillance Radar 88 Doppler), NEXRAD is a doppler system that replaced older non-Doppler meteorological radars. NEXRAD can determine both the direction and speed of migrating individuals that are traveling both towards and away from the radar. [6]

Isotope analysis

Isotope analysis is based on the principle that most elements exist in two or more forms, known as isotopes. Isotopes have the same number of protons but differ in their number of neutrons, resulting in different masses. This variation in the relative abundance of stable isotopes results from tiny mass differences that cause the isotopes to act differently in chemical reactions and physical processes. Different environments are often characterized by predictable isotopic signatures, meaning that organism's unique isotopic signatures can be traced to unique environments containing the same isotope signatures. [7] The fundamental design of isotope ratio mass spectrometers, a tool used for analyzing isotopes, has not changed since the 1940s. Stable-isotope analysis (SIA) is frequently used with birds since only one capture is needed to determine its breeding origin. SIA is based on the principle that birds will retain isotopic information in their tissues that are based on the isotopic landscapes they inhabited in the recent past. Isotopic information is obtained mostly from feathers, since the keratin in feathers is metabolically inert. For various bird species tested, their feathers' elemental turnover rate is positively correlated with their metabolic rate. A problem with SIA occurs if birds undergo protein catabolism during migration and their isotopic information is subsequently lost as a result of blood-cell replacement. SIA is difficult to employ on birds that switch their diets seasonally due to the difficulty of separating isotopic changes due to location change from isotopic changes due to diet change. The elements that are primarily analyzed for SIA are: carbon, nitrogen, oxygen, hydrogen, and sulphur. Isotopic variation among plants is largely based on differences in photosynthetic pathways. The method is beneficial since it relies on capturing an individual only once. Important information can be obtained from something as simple as a birds' feather, which is relatively easily and painlessly extracted.

1950s

Acoustic telemetry

Acoustic telemetry is based on the principles of sonar, which was developed to detect submarines during World War I. The properties of acoustic systems favour their use in deep waters with high conductivity and low turbulence. The first acoustic telemetry equipment was developed for studying fish in 1956 by the U.S. Bureau of Commercial Fisheries and the Minneapolis-Honeywell Regulator Corporation. Individuals that want to track marine wildlife in salt water face unique challenges. Radio waves are highly absorbed by salt water, making them a poor choice for sending messages through the ocean. Sound waves, on the other hand, are not similarly impeded by seawater. Due to the fact that sound can travel more than 4 times faster in water than in air, this allows for near real-time listening over long distances with proper acoustic telemetry equipment. Acoustic signals are the preferred communication tool for researchers who wish to track fish and wildlife in marine habitats in real time. As with radio, acoustic telemetry requires transmitters to send signals and receivers to hear them. The transmitters are electronic tags that emit a series of sound pulses into the surroundings. They can be surgically implanted or attached externally to an organism. The range of signal reception can vary from a few meters to more than a thousand meters. The signal typically transmits once every minute or two, in order to conserve battery life. Receivers are small, data-logging computers that “listen” for tagged individuals. When a signal is identified, the tag's unique ID code is saved with the date and time. The data from any single receiver provide a record of each signal to that location by a tagged individual. Researchers might deploy many receivers over large regions to understand the movement patterns of tagged individuals. Hydrophones, a type of underwater microphone, receive acoustic signals and then either store or convert them into radio signals for rapid transmission through the air to receivers on shore.

Fixed-site acoustic receiver system used during the late 1950s. Data was recorded on both paper and magnetic tape. Acoustic receiver circa 1950s.png
Fixed-site acoustic receiver system used during the late 1950s. Data was recorded on both paper and magnetic tape.

1960s

VHF telemetry

VHF (very high frequency) telemetry typically requires a user to acquire VHF transmissions from a VHF transmitter (usually in a collar attached to the animal) using a hand-held antenna. VHF signals are either received by mobile or stationary receivers equipped with directional antennae. The location of the transmitter can then be determined by acquiring the transmissions from three (or more) different locations to triangulate the location of the device. VHF tracking is more commonly known as "radio-tracking." 

“Radio-tracking is a revolutionary technique for studying many kinds of free-ranging animals. By March 1979, one of the leading commercial suppliers of radio tracking equipment had sold over 17,500 radio collars. Numerous species, from crayfish through elephants, have been studied with this technique in widespread regions of the world, from pole to pole and in most major countries of the world”. [8]  

The idea of using tiny radio transmitters attached to animals to track those creatures occurred to several people in the 1950s when transistors were rapidly replacing vacuum tubes, thus minimizing the size of devices that could produce radio signals. Concurrently, some workers started developing such devices to monitor animal heart rates [9] [10] and respiration [11] while others strove to embed transmitters in collars and harnesses so animal locations could be tracked. [12] [13] [14] [15]

Each of these groups involved wildlife biologists teaming up with electronics engineers or technicians to build the radio-transmitters. Of these electronics experts, William (Bill) W. Cochran, while an undergraduate student with the University of Illinois, had been working on the radio transmitting systems for some of the earliest satellites for the U. S. Army.

George Swenson, [16] principal investigator on a NASA-sponsored University of Illinois project to study Sputnik-era radio propagation through the Earth's ionosphere, had this to say about him:

“... [Cochran] had been responsible for building and operating our field stations for a couple of years. He'd demonstrated exceptional skill with transistor circuits. Bill and I decided we could build a couple of satellite payloads, and we started to experiment with circuits and various kinds of batteries.”

“...while he was designing satellite transmitters and receivers, [he] was also moonlighting for wildlife biologists of the Illinois Natural History Survey. They had the idea that small radio transmitters, attached to rabbits, might allow them to track the animals into their burrows, and establish their activity patterns. It worked. Success led to a suggestion from an ornithologist that perhaps birds could be tracked in flight.”

According to Cochran (8/23/19), wildlife biologist Frank Bellrose wished to test the direction in which translocated mallard ducks flew when released into a new area. Cochran built a transmitter to attach to the duck with a light metal band around its chest, and when the duck passed a station where Cochran was monitoring a satellite, he was able to record the signal. Swenson [16] continued: “As [the duck] breathed quietly, the metal band periodically distorted and pulled the frequency, causing a varying beat note from the receiver. An audio-frequency discriminator was available, so the frequency variations could be recorded on a strip chart. When the bird was released into the air, its breathing was recorded on the chart, and in addition, a higher-frequency modulation representing its wing beats. The biologists informed us that we'd made the first measurements of the relation between the wing beats and the breathing of a flying bird, thus answering a long-standing question,” as well as the direction in which the duck flew. [11]

“Of course I was very young and cared little about what ducks do and knew nothing about publishing and didn’t even care if they included me as a co-author,” stated Cochran (8/23/19).

“Bill Cochran followed these successes with a long career in radio-telemetry applications in wildlife research. After leaving our program, he developed wildlife radio tracking to a high degree of effectiveness, founding the company that pioneered the business . . .” [16]

Meanwhile, Dwaine Warner, professor of ornithology, University of Minnesota, a very creative and forward-thinking researcher, had received a grant to use electronic technology to monitor various animals at the university's Cedar Creek Natural History Area, some 40 km north of the Twin Cities. One of his first actions was to hire Cochran, still an undergraduate, to design a system to automatically concurrently monitor the movements of various animals in that study area.

Etienne Benson (2010) wrote, “They invited him to visit the group in Minnesota in the fall of 1961, and a few months later he moved to the Twin Cities to take charge of the Museum of Natural History’s bioelectronics laboratory. The museum group had had some success transmitting temperature measurements from rabbits on the roof of the building to their basement laboratory with their own tag, but after Cochran arrived they shifted to his design.” [17]

The automatic radio-tracking system that Cochran devised, [18] with its biologists, engineers, and technicians led by Cochran, became a radio-tracking center. That center not only produced many papers based on its own radio-tracking research, but it also developed new techniques, refined the tiny radio transmitters, attachment methods, and signal receivers and generally fostered the entire field through formal and informal collaboration with other biologists and engineers as well as spinning off businesses that commercially supplied the equipment. The radio-tracking revolution had begun.

Mech's Handbook of Animal Radio-tracking [8] included the following: “This book is dedicated to William W. Cochran, Illinois Natural History Survey, who, many of us believe, has done more to further the field of animal radio-tracking than any other single person.”

1970s

Photo-identification

MARKResearchers and whale watchers that observed humpback whales realized that each individual humpback whale has unique pigmentation and scarring patterns on their tail flukes. Beginning in the 1970s, researchers began to recognize individual whales based on their tail flukes using photo-identification. Since then, photo-identification has been used to study many marine species in order to determine aspects of their biology, ecology, and behaviour. Rather than spend time compiling and analyzing the numerous photographs, computer programs have been created to help researchers identify individuals and resighting events using existing photo-identification catalogues. One such program, Fluke Matcher, reconciles the many thousands of photographs of humpback whales by using several different features of the fluke such as size, shape, black and white pigment distribution, and other distinctive features. By relying on many criteria, Fluke Matcher can identify individual whales from poorer quality or incomplete photographs. Regular "citizen scientists" and whale watchers can upload their own photographs to these computer programs, helping scientists determine if an individual matches another from the database. [19]

Researchers use variation on humpback whale flukes to identify and track whales. Humpback whale flukes variation.png
Researchers use variation on humpback whale flukes to identify and track whales.

1980s

PIT tags

Passive integrated transponder (PIT) tags consist of an integrated circuit chip, capacitor, and antenna coil encased in glass. They have been used since the mid 1980s with scientists studying fish movements. Since then, PIT tags have been used to study the movement of amphibians, reptiles, birds, and invertebrates. [20] The tags act as a lifetime barcode for an organism and provided they can be scanned, are as reliable as a fingerprint. PIT tags are dormant until activated and therefore do not require any internal source of power throughout their lifespan. To activate the tag, a low-frequency radio signal is emitted by a scanning device that generates a close-range electromagnetic field. The tag then sends a unique alpha-numeric code back to the reader, [21] effectively identifying the individual organism. Internal PIT tags are inserted via large-gauge needles or surgically implanted either subcutaneously or into a body cavity. PIT tagging can be used to answer questions regarding growth rates, survivorship, food webs, and movement patterns. A major advantage over mark-recapture methods is that marked animals do not need to be recaptured; they just need to pass by an automated reading system antenna.

PIT tag is shown next to an American penny. PIT tags are about the size of a grain of rice. PIT Tag.jpg
PIT tag is shown next to an American penny. PIT tags are about the size of a grain of rice.

1990s

Geolocator

First described in 1992, a geolocator is a device that periodically records ambient light level (solar irradiance) as a means of determining an organism's location. Geolocators have been especially useful for tracking bird migration because there are small and lightweight ones that do not utilize satellite or radio telemetry for real-time monitoring. The major disadvantage is that organism's need to be recaptured in order to obtain data from the device. [22] Light levels that are recorded can be used to determine the latitude and longitude, and thus provide information on the location of organisms. When the organism is in a shaded environment, due to clouds, feathers, or foliage, a problem occurs since the geolocator does not record accurate light levels.

GPS receiver

GPS technology enables individuals to observe relatively fine-scale movement or migratory patterns in a free-ranging wild animal using the Global Positioning System. After fitting animals with a GPS receiver, their position is determined by precisely timing the signals sent by GPS satellites high above the Earth, and the location of satellites sending the signals. As soon as GPS became available for civilian use in the 1990s, biologists started to attach GPS receivers to animals. Although the first civilian GPS receivers were developed by Magellan in 1989, they were very large and therefore impractical for animal applications. By the mid-1990s, the larger GPS manufacturing companies created GPS receivers that were smaller, more energy-efficient, and therefore more usable for animal-tracking applications.

GPS tracking devices are often linked to an Argos Platform Transmitter Terminal (PTT) enabling them to transmit data via the Argos System, a scientific satellite system which has been in use since 1978. Users can then download their data directly from Argos via telnet and process the raw data to extract their transmitted information. Data can also be transmitted via GSM networks, using SMS messages or internet protocols in a GPRS session.

GSM Mobile Phone Telemetry

A new telemetry system based on GSM (Global System for Mobile Communications) mobile phone technology was first described in 1998 as a technique that provides more detailed mark-recapture data over an extensive geographical range. Organisms are fitted with a mobile phone tag that is programmed to attempt to send a text message back to the laboratory at regular intervals. The received messages are analyzed in order to determine the organism's estimated location. [23] Mobile phone telemetry is advantageous since it is easy to set up with relatively low maintenance costs, it allows for two-way communications, and required a low profile, non-directional antenna on the receiver. Some disadvantages include the requirement of monitoring in an area that has cell phone coverage, monthly service fees, and the possibility of the cell phone service provider changing cell towers or communication protocols, thereby effecting communications to your remote locations.

Pop-up satellite archival tags (PSAT)

Pop-up satellite archival tags are electronic storage devices developed in the late 1990s that are either surgically implanted or attached to the outside of marine animals with an anchoring device. These tags can record data on ambient light levels, swimming depth, and internal/external temperature. PSAT's transmit recorded information to an orbiting satellite which then relays the information to researchers. At a preset time, a signal causes the tag's attachment to the organism to dissolve, allowing the tag to float to the surface of the water where it sends its data via satellite. Although PSAT's are more expensive than other tags, they are effective for studying the movements of large pelagic animals that are often not recaptured. Data from PSAT's has been used to determine horizontal and vertical movement patterns, residence times, feeding bouts, and possible spawning areas. [24]

White shark tagged below the dorsal fin with a pop-up satellite tag. White shark with PSAT.jpg
White shark tagged below the dorsal fin with a pop-up satellite tag.

Genetic markers

A genetic marker is a gene or DNA sequence with a known location on a chromosome that can be used to identify individuals or species. The marker could be a short DNA sequence, such as a sequence surrounding a single base-pair change, known as a single nucleotide polymorphism (SNP), or a longer minisatellite sequence. A small sample of blood, a feather, or piece of tissue, can be extracted from an organism and its unique genetic markers are determined. If the organism is recaptured or a sample is obtained at a later date, then it is possible to determine if it was the same organism as in the initial capture. Having proper bioinformatics tools is essential for processing and analyzing DNA sequence data.

Many important developments during the 1990s have made tracking wildlife using genetic markers possible, including:

  1. the development of polymerase chain reaction (PCR) which can amplify small amounts of DNA to make a large usable amount.
  2. the development and use of evolutionarily conserved sets of PCR primers.
  3. the use of microsatellite loci that vary among individuals within a species, and between species.
  4. the development of advanced DNA sequencing techniques.

2000s

Nanotechnology

Many things utilized for studying larger organisms has not been possible for smaller organisms due to size constraints on technology. In marine environments, tracking devices on smaller organisms are too heavy causing them to behave unnaturally. Recent advances in nanotechnology have allowed scientists to track millimeter sized organisms. Small organisms can be labelled with quantum dots, a microscopic fluorescent probe, the core of which is a semiconductor material with high photostability, high wavelength absorption range, and a narrow emission wavelength range. In one experiment, [25] amine proteins on the exoskeleton of Daphnia magna were biotinylated and streptavidin was attached to the quantum dots. This allowed for a simple bioconjugation to tag the organisms with the quantum dots, by taking advantage of the high affinity interaction between streptavidin and biotin. D. magna individuals were successfully tracked with each having a unique quantum dot that fluoresced and emitted light of a specific wavelength that could be detected using cameras. The tags were useful for up to 24 hours, after which the organisms shed their carapace containing the quantum dot. Better cameras are being developed that will improve the depth at which the quantum dot-tagged organisms can be observed and allow for studies to be conducted in natural environments.

Future tracking

With continued technological innovation, future applications of telemetry will likely provide insights that are currently unavailable. Improvements in battery technology, combined with continued miniaturization of transmitter components, will likely reduce transmitter size further, while increasing efficiency and extending either detection range or tag life. As transmitter circuitry becomes more efficient, surplus battery power can be used to power sensors, so that a common practice of future studies will be to study not only the movement and behaviour of tagged fish but also to simultaneously collect information on the environment fish use. This will lead to more comprehensive multidiscipline studies addressing behaviour, biology, and ecology. In the future, technological advances may eventually lead to a transmitter capable of following the movements and behaviour of individuals throughout their life cycle. [26]

Related Research Articles

<span class="mw-page-title-main">Telemetry</span> Data and measurements transferred from a remote location to receiving equipment for monitoring

Telemetry is the in situ collection of measurements or other data at remote points and their automatic transmission to receiving equipment (telecommunication) for monitoring. The word is derived from the Greek roots tele, 'remote', and metron, 'measure'. Systems that need external instructions and data to operate require the counterpart of telemetry: telecommand.

<span class="mw-page-title-main">Bird ringing</span> Attachment of tag to a wild bird to enable individual identification

Bird ringing (UK) or bird banding (US) is the attachment of a small, individually numbered metal or plastic tag to the leg or wing of a wild bird to enable individual identification. This helps in keeping track of the movements of the bird and its life history. It is common to take measurements and examine conditions of feather molt, subcutaneous fat, age indications and sex during capture for ringing. The subsequent recapture or recovery of the bird can provide information on migration, longevity, mortality, population, territoriality, feeding behavior, and other aspects that are studied by ornithologists. Other methods of marking birds may also be used to allow for field based identification that does not require capture.

Automatic vehicle location is a means for automatically determining and transmitting the geographic location of a vehicle. This vehicle location data, from one or more vehicles, may then be collected by a vehicle tracking system to manage an overview of vehicle travel. As of 2017, GPS technology has reached the point of having the transmitting device be smaller than the size of a human thumb, able to run 6 months or more between battery charges, easy to communicate with smartphones — all for less than $20 USD.

Passive radar is a class of radar systems that detect and track objects by processing reflections from non-cooperative sources of illumination in the environment, such as commercial broadcast and communications signals. It is a specific case of bistatic radar – passive bistatic radar (PBR) – which is a broad type also including the exploitation of cooperative and non-cooperative radar transmitters.

Radiolocation, also known as radiolocating or radiopositioning, is the process of finding the location of something through the use of radio waves. It generally refers to passive uses, particularly radar—as well as detecting buried cables, water mains, and other public utilities. It is similar to radionavigation, but radiolocation usually refers to passively finding a distant object rather than actively one's own position. Both are types of radiodetermination. Radiolocation is also used in real-time locating systems (RTLS) for tracking valuable assets.

A GPS tracking unit, geotracking unit, satellite tracking unit, or simply tracker is a navigation device normally on a vehicle, asset, person or animal that uses satellite navigation to determine its movement and determine its WGS84 UTM geographic position (geotracking) to determine its location. Satellite tracking devices send special satellite signals that are processed by a receiver.

Biotelemetry involves the application of telemetry in biology, medicine, and other health care to remotely monitor various vital signs of ambulatory patients.

<span class="mw-page-title-main">GNSS reflectometry</span> Earth observation technology

GNSS reflectometry involves making measurements from the reflections from the Earth of navigation signals from Global Navigation Satellite Systems such as GPS. The idea of using reflected GNSS signal for earth observation became more and more popular in the mid-1990s at NASA Langley Research Center and is also known as GPS reflectometry. Research applications of GNSS-R are found in

<span class="mw-page-title-main">Animal migration tracking</span> Used to study animals behavior in the wild

Animal migration tracking is used in wildlife biology, conservation biology, ecology, and wildlife management to study animals' behavior in the wild. One of the first techniques was bird banding, placing passive ID tags on birds legs, to identify the bird in a future catch-and-release. Radio tracking involves attaching a small radio transmitter to the animal and following the signal with a RDF receiver. Sophisticated modern techniques use satellites to track tagged animals, and GPS tags which keep a log of the animal's location. With the Emergence of IoT the ability to make devices specific to the species or what is to be tracked is possible. One of the many goals of animal migration research has been to determine where the animals are going; however, researchers also want to know why they are going "there". Researchers not only look at the animals' migration but also what is between the migration endpoints to determine if a species is moving to new locations based on food density, a change in water temperature, or other stimulus, and the animal's ability to adapt to these changes. Migration tracking is a vital tool in efforts to control the impact of human civilization on populations of wild animals, and prevent or mitigate the ongoing extinction of endangered species.

Acoustic tags are small sound-emitting devices that allow the detection and/or remote tracking of organisms in aquatic ecosystems. Acoustic tags are commonly used to monitor the behavior of fish. Studies can be conducted in lakes, rivers, tributaries, estuaries or at sea. Acoustic tag technology allows researchers to obtain locational data of tagged fish: depending on tag and receiver array configurations, researchers can receive simple presence/absence data, 2D positional data, or even 3D fish tracks in real-time with sub-meter resolutions.

<span class="mw-page-title-main">GPS animal tracking</span> Remotely observe movement or migratory patterns in a wild animal using the Global Positioning System

GPS animal tracking is a process whereby biologists, scientific researchers or conservation agencies can remotely observe relatively fine-scale movement or migratory patterns in a free-ranging wild animal using the Global Positioning System (GPS) and optional environmental sensors or automated data-retrieval technologies such as Argos satellite uplink, mobile data telephony or GPRS and a range of analytical software tools.

<span class="mw-page-title-main">Radio beacon</span> Radio transmitter to identify a location for navigation aid

In navigation, a radio beacon or radiobeacon is a kind of beacon, a device that marks a fixed location and allows direction-finding equipment to find relative bearing. But instead of employing visible light, radio beacons transmit electromagnetic radiation in the radio wave band. They are used for direction-finding systems on ships, aircraft and vehicles.

<span class="mw-page-title-main">Radio</span> Technology of using radio waves to carry information

Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 3,000 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by another antenna connected to a radio receiver. Radio is widely used in modern technology, in radio communication, radar, radio navigation, remote control, remote sensing, and other applications.

<span class="mw-page-title-main">GIS and aquatic science</span>

Geographic Information Systems (GIS) has become an integral part of aquatic science and limnology. Water by its very nature is dynamic. Features associated with water are thus ever-changing. To be able to keep up with these changes, technological advancements have given scientists methods to enhance all aspects of scientific investigation, from satellite tracking of wildlife to computer mapping of habitats. Agencies like the US Geological Survey, US Fish and Wildlife Service as well as other federal and state agencies are utilizing GIS to aid in their conservation efforts.

<span class="mw-page-title-main">Unified S-band</span>

The Unified S-band (USB) system is a tracking and communication system developed for the Apollo program by NASA and the Jet Propulsion Laboratory (JPL). It operated in the S band portion of the microwave spectrum, unifying voice communications, television, telemetry, command, tracking and ranging into a single system to save size and weight and simplify operations. The USB ground network was managed by the Goddard Space Flight Center (GSFC). Commercial contractors included Collins Radio, Blaw-Knox, Motorola and Energy Systems.

<span class="mw-page-title-main">Light level geolocator</span>

A light level geolocator, light-level logger or global location sensor (GLS) is a lightweight, electronic archival tracking device, usually used in bird migration research to map migration routes, identify important staging areas, and sometimes provide additional ecological information. A geolocator periodically records ambient light level to determine location.

<span class="mw-page-title-main">ICARUS Initiative</span>

The ICARUS Initiative, short for International Cooperation for Animal Research Using Space, is an international effort to track the migratory patterns of small flying animals using radio transmitters. The project began in 2002 and the tracking system was installed on the International Space Station (ISS) in August 2018, switched on in July 2019, and began operations in September 2020. The director for the ICARUS project is Martin Wikelski, director of the Max Planck Institute of Animal Behavior in Radolfzell, Germany.

<span class="mw-page-title-main">Wildlife radio telemetry</span> Tool to track the movement and behavior of animals

Wildlife radio telemetry is a tool used to track the movement and behavior of animals. This technique uses the transmission of radio signals to locate a transmitter attached to the animal of interest. It is often used to obtain location data on the animal's preferred habitat, home range, and to understand population dynamics. The different types of radio telemetry techniques include very high frequency (VHF) transmitters, global positioning system (GPS) tracking, and satellite tracking. Recent advances in technology have improved radio telemetry techniques by increasing the efficacy of data collection. However, studies involving radio telemetry should be reviewed in order to determine if newer techniques, such as collars that transmit the location to the operator via satellites, are actually required to accomplish the goals of the study.

An emergency locator beacon is a radio beacon, a portable battery powered radio transmitter, used to locate airplanes, vessels, and persons in distress and in need of immediate rescue. Various types of emergency locator beacons are carried by aircraft, ships, vehicles, hikers and cross-country skiers. In case of an emergency, such as the aircraft crashing, the ship sinking, or a hiker becoming lost, the transmitter is deployed and begins to transmit a continuous radio signal, which is used by search and rescue teams to quickly find the emergency and render aid. The purpose of all emergency locator beacons is to help rescuers find survivors within the so-called "golden day", the first 24 hours following a traumatic event, during which the majority of survivors can usually be saved.

<span class="mw-page-title-main">Motus (wildlife tracking network)</span> Wildlife tracking network

Motus is a network of radio receivers for tracking signals from transmitters attached to wild animals. Motus uses radio telemetry for real-time tracking. It was launched by Birds Canada in 2014 in the US and Canada.

References

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  6. ↑ Russell, K. R. & Gauthreaux, Jr., S. A. Use of weather radar to characterize movements of roosting purple martins. Wildlife Society Bulletin 26, 5-16 (1998).
  7. ↑ West, J. B. et al. Stable isotopes as one of nature's ecological recorders. Trends in Ecology & Evolution 21, 408-414 (2006).
  8. 1 2 MECH, L.D. (1980), "Making the Most of Radio Tracking—A Summary of Wolf Studies in Northeastern Minnesota", A Handbook on Biotelemetry and Radio Tracking, Elsevier, pp. 85–95, doi:10.1016/b978-0-08-024928-5.50012-9, ISBN   9780080249285
  9. ↑ LeMunyan, Cobert D.; White, William; Nyberg, Ernest; Christian, John J. (January 1959). "Design of a Miniature Radio Transmitter for Use in Animal Studies". The Journal of Wildlife Management. 23 (1): 107–110. doi:10.2307/3797755. ISSN   0022-541X. JSTOR   3797755.
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  14. ↑ Craighead, F. C., Jr., et al., 1963. In L. E. Slater (ed.) Radiotracking of Grizzly Bears. Bio-Telemetry, Proceedings of the Interdisciplinary Conference, New York, March, 1962, pp. 133-148. Pergamon Press, Inc., New York, USA
  15. ↑ Marshall, W. H., and J. J. Kupa.  1963.  Development of radio-telemetry techniques for ruffed grouse studies.  Transactions of the North American Wildlife and Natural Resources Conference 28:443-456.
  16. 1 2 3 Swenson, G. W. Copyright 1994 Institute of Electrical and Electronics Engineers. Reprinted from the IEEE Antennas and Propagation Magazine, vol. 36, no. 2, pp.32-35, April 1994.  https://ece.illinois.edu/about/history/reminiscence/space.asp
  17. ↑ Benson, E. 2010.  Wired Wilderness: Technologies of Tracking and the Making of Modern Wildlife.  The Johns Hopkins University Press.  Baltimore, Maryland, USA
  18. ↑ Cochran, W. W.; Warner, D. W.; Tester, J. R.; Kuechle, V. B. (1965-02-01). "Automatic Radio-Tracking System for Monitoring Animal Movements". BioScience. 15 (2): 98–100. doi:10.2307/1293346. ISSN   0006-3568. JSTOR   1293346.
  19. ↑ Kniest E, Burns D, Harrison P. 2010. Fluke Matcher: A computer aided matching system for humpback whale (Megapteranovaeangliae) flukes. Mar. Mamm. Sci. 26(3): 744-756.
  20. ↑ Gibbons, J. W. & Andrews, K. M. PIT tagging: Simple technology at its best. BioScience 54, 447-454 (2004).
  21. ↑ Keck M. B. Test for detrimental effects of PIT tags in neonatal snakes. Copeia 1994, 226-228 (1994).
  22. ↑ Estimation of location: global coverage using light intensity, Wilson R.P., Ducamp J., Rees W.G., Culik B.M., Niekamp K., in Wildlife Telemetry: remote monitoring and tracking of animals, Priede I.M., Swift S.M. (eds), Ellis Horward, Chichester, p131-134, 1992.
  23. ↑ McConnell B, Beaton R, Bryant E, Hunter C, Lovell P, Hall A. (2004). Phoning home - A new GSM mobile phone telemetry system to collect mark-recapture data. Marine Mammal Science, 20 (2): 274-283.
  24. ↑ Block, B. A., H. Dewar, C. Farwell, and E. D. Prince. 1998. A new satellite technology for tracking the move- ments of Atlantic bluefin tuna. Proceedings of the National Academy of Sciences, USA 95:9384–9389.
  25. ↑ Lard M, Bäckman J, Yakovleva M, Danielsson B, Hansson LA. 2010. Tracking the Small with the Smallest – Using Nanotechnology in Tracking Zooplankton. PLoS ONE 5(10): e13516.
  26. ↑ Adams, Noah S., John W. Beeman, and John H. Eiler. Telemetry Techniques: A User Guide for Fisheries Research. Bethesda, MD: American Fisheries Society, 2012.
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