The distribution of cattle and their interaction with the African Buffalo at the wildlife-livestock interface understood using real-time Global Positioning Systems (GPS) and remotely sensed data (original) (raw)
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Preventive Veterinary Medicine, 2013
The study was conducted to assess the technical feasibility of studying the spatial and temporal interaction of traditionally herded livestock and wildlife using global positioning system (GPS) tracking technology in Northern Kenya. Two types of collars were used on nine cows: radio frequency and global system for mobile communications (GSM) collars and GPS-satellite (SAT) collars. Full results of cattle tracking were available for eight cows (3 GSM and 5 SAT) tracked between July 2008 and September 2010. A cumulative total of 1556 tracking days was recorded over the 17 month period. On average cows walked 10,203 m/day (average total monthly distance walked was 234 km). Significant seasonal differences were found; on average cows walked 9.607 m and 10,392 m per day in the rainy and the dry seasons, respectively. This difference was also significant for total monthly and daily distance walked between the dry and the rainy season. On average cows walked daily 9607 m and 10,392 m on the rainy and the dry season respectively. During the dry months a 48 h cycle was observed with cows walking 15-25 km to water every 2nd day but only 5-8 km/day between watering days. There was a 24% overlap of cattle range with both elephants and zebras. This study demonstrated the feasibility of tracking cattle using radio collars. It shows the complexity of spatial use by cattle and wildlife. Such information can be used to understand the dynamics of disease transmission between livestock and wildlife.
Characterising the spatial and temporal activities of free-ranging cows from GPS data
The Rangeland Journal, 2012
Electronic tracking provides a unique way to document behaviour by cows on a continuous basis. Over 2 years 17 beef cows with calves were fitted with global positioning system (GPS) devices programmed to record uncorrected GPS locations at 1-s intervals in a semi-desert rangeland. Each cow was periodically observed during daylight hours and foraging, walking and stationary (standing/lying) activity times were recorded across days and individual cows to calculate a mean travel rate for each activity. Data without observers present were collected immediately preceding and following the abrupt weaning of calves at between 223 and 234 days of age to evaluate the potential of classifying various travel rates into foraging, walking and stationary activity. The three activities were further characterised within a 24-h period based on the sun's angle with respect to the horizon. Only data from cows whose equipment acquired !90% of the potential GPS positional data among consecutive days were analysed. Due to problems with the equipment, data from two cows in 2009 and two cows in 2011 met these criteria. The interval evaluated consisted of four 24-h periods before abrupt weaning and seven 24-h periods following weaning. Results suggested that uncorrected 1-s positional GPS data are satisfactory to classify the behaviour by free-ranging beef cows into foraging, walking and stationary activities. Furthermore, abrupt weaning caused cows to change their spatial and temporal behaviour across and within days. Overall, travel by cows increased post-weaning with subtle within-day behavioural changes. Further research will be required to fully understand the biological importance of spatio-temporal behaviour to optimise cattle and landscape management goals.
Tracking livestock using global positioning systems – are we still lost?
Animal Production Science, 2011
Since the late 1980s, satellite-based global positioning systems (GPS) have provided unique and novel data that have been used to track animal movement. Tracking animals with GPS can provide useful information, but the cost of the technology often limits experimental replication. Limitations on the number of devices available to monitor the behaviour of animals, in combination with technical constraints, can weaken the statistical power of experiments and create significant experimental design challenges. The present paper provides a review and synthesis of using GPS for livestock-based studies and suggests some future research directions.
GPS Collars in Studies of Cattle Movement: Cases of Northeast Namibia and North Finland
Engineering Earth, 2010
The deployment of the US Global Positioning System can be seen as a mega-engineering project in itself. This GPS system consists of 24 satellites and has been operational since 1978; in 1984 the system has been open for civilian use. Spin off from this new technology has been a whole industry based upon GPS-navigation. This together with the advances in Geographical Information Systems (GIS) software has created industries based upon location based knowledge. We can give exact locations to any object, person or process on the surface of the earth, enabling us to produce real time spatial databases. How to incorporate traditional and indigenous knowledge into GIS-data is a fascinating problem. People's memory of time and place is not exact, but there are markers in space and time which can be used to relate indigenous knowledge with more exact forms of data. Allowing for traditional forms of land use in a world dominated by other more advanced and intensive forms of land use is probably a very demanding task. There will be a need to integrate traditional knowledge with exact data on land use, wildlife, conservation, environment and management. This is definitely an important issue in engineering earth and the environment.
Applied Animal Behaviour …, 2004
Global positioning system (GPS) technology is increasingly applied in livestock science to monitor pasture use and tracking routes, and is often combined with equipment for monitoring animal activity. As GPS data are referenced in time and space, it is hypothesised that parameters derived there from, such as distance travelled and aerial distance between the first and last point of a defined time interval, can be used to compute reliable estimates of daily activity budgets and hourly activity patterns of grazing animals.
Global positioning systems indicate landscape preferences of cattle in the subtropical savannas
The Rangeland Journal, 2007
Large paddocks, a heterogeneous landscape and widely dispersed water points provide challenges for the sustainable grazing management of northern Australian beef properties. Determining grazing animal distribution and relating this to features in the landscape, including artificial water points, can assist in the sustainable management of these environments. This case study describes the distribution and landscape association of cattle for part of a single wet season. Twelve Brahman cows were fitted with global positioning system (GPS) collars for 8 weeks in a 1530 ha paddock that contained a diversity of land-types and a single artificial water point. Grazing preferences were initially limited to a 250-ha cleared area of clay soil sown with Cenchrus ciliaris. Thereafter, animals moved on to less fertile outlying areas of Eucalyptus and Acacia agyrodendron native pasture woodland. Mean convex polygon, the smallest polygon that contained 90% of positional data, increased from 229 ± 3...
Monitoring cattle behavior and pasture use with GPS and GIS
Canadian Journal of Animal Science, 2000
Precision agriculture is already being used commercially to improve variability management in row crop agriculture. In the same way, understanding how spatial and temporal variability of animal, forage, soil and landscape features affect grazing behavior and forage utilization provides potential to modify pasture management, improve efficiency of utilization, and maximize profits. Recent advances in global positioning system (GPS) technology have allowed the development of lightweight GPS collar receivers suitable for monitoring animal position at 5-min intervals. The GPS data can be imported into a geographic information system (GIS) to assess animal behavior characteristics and pasture utilization. This paper describes application and use of GPS technology on intensively managed beef cattle, and implications for livestock behavior and management research on pasture. Key words: Livestock behavior, electronics, grazing, forage, global positioning system, geographic information system
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
In semi-arid savannas, the availability of surface water constrains movements and space-use of wild animals. To accurately model their movements in relation to water selection at a landscape scale, innovative methods have to be developed to i) better discriminate water bodies in space while characterizing their seasonal occurrences and ii) integrate this information in a spatially-explicit model to simulate animal movements according to surface water availability. In this study, we propose to combine satellite remote sensing (SRS) and spatial modelling in the case of the African buffalo (Syncerus caffer caffer) movements at the periphery of Hwange National Park (Zimbabwe). An existing classification method of satellite Sentinel-2 time-series images has been adapted to produce monthly surface water maps at 10 meters spatial resolution. The resulting water maps have then been integrated into a spatialized mechanistic movement model based on a collective motion of self-propelled individuals to simulate buffalo movements in response to surface water. The use of spectral indices derived from Sentinel-2 in combination with the shortwave infrared (SWIR) band in a Random Forest (RF) classifier provided robust results with a mean Kappa index, over the time series, of 0.87 (max = 0.98, min = 0.65). The results highlighted strong space and time variabilities of water availability in the study area. The mechanistic movement model showed a positive and significant correlation between observations/simulations movements and space-use of buffalo's herds (Spearman r = 0.69, p-value < 10 e-114) despite overestimating the presence of buffalo individuals at proximity of the surface water.
Role of GPS in Monitoring Livestock Migration
Satellite-based technique of global positioning systems (GPS) is useful for tracking long-distance livestock movement across the grazing routes and to study the specific needs of livestock herders. There are two kinds of GPS tracking systems: live and real-time tracking, and passive tracking. Real-time GPS tracking is used to keep an eye on livestock and it has the ability to monitor spatial movements and spatial activities. Such GPS devices provide information for multiple benefits i.e., movements of livestock throughout the landscape, grazing and watering patterns, and areas where the livestock deplete nutrients in the soil. Passive GPS tracking systems are able to record information on livestock mobility and identify key areas actively utilized by livestock. In the present study, Clark Animal Tracking System (Clark ATS Plus) was deployed to study the migration pattern of livestock (cattle, sheep and goat) of Western Rajasthan, which records data at hourly intervals and position (latitude and longitude), date, time, fix quality, and animal velocity on secure digital cards in the collar. Present paper discusses the use of satellite tracking in studying animal migration by elucidating migration routes, stopover sites, average speeds, and total migration time and distance for formulating appropriate range management strategies.