Screening Global Positioning System Location Data for Errors Using Animal Movement Characteristics

Bjørneraas, Kari; Moorter, Bram Van; Rolandsen, Christer Moe; Herfindal, Ivar

doi:10.1111/j.1937-2817.2010.tb01258.x

Cited by 178 publications

(151 citation statements)

References 24 publications

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“…Each finding was mapped using GPS, and a standard traps and hunting blinds were in use due to lack of snow-covered ground. A few animals had to be removed from the analyses due to lack of data in the specified period, and the final dataset and removed using the script provided in Bjørneraas et al (2010). Data processing and all analyses were performed using the software R.11.1 (2010).…”

Section: Historic Data: Pitfalls and Hunting Blindsmentioning

confidence: 99%

Learning from the past to predict the future: using archaeological findings and GPS data to quantify reindeer sensitivity to anthropogenic disturbance in Norway

et al. 2012

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(1, 5, and 10 km-radius buffers) on the current probability of use of ancient movement 35 corridors. Tourist cabins and roads had the strongest long-term direct effects at most scales: 1 tourist cabin and 1 km road within a 1km-radius buffer would lead, respectively, to complete area abandonment, and to a 46% decrease in the probability of use. Power lines and private cabins had significant indirect effects on area use through their effect on roads, while hiking trails and, in particular, hydroelectric dams had highly variable effects, not significant at a 40 nation-wide scale. Finally, we provide a flexible tool to estimate the potential long-term direct and cumulative effects of different types of infrastructures at the desired spatial scale to be used for the development of future sustainable land management plans.

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Section: Historic Data: Pitfalls and Hunting Blindsmentioning

confidence: 99%

Learning from the past to predict the future: using archaeological findings and GPS data to quantify reindeer sensitivity to anthropogenic disturbance in Norway

et al. 2012

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“…The GPS data was screened automatically for errors using a standard procedure based on animal movement theory (Bjørneraas et al 2010). To determine whether an animal was stationary, migratory, dispersing or non-typical, we used first an automated approach using netsquare-displacement (Bunnefeld et al 2011), together with additional criteria described in Bischof et al (2012).…”

Section: Screening Of Gps Datamentioning

confidence: 99%

Contrasting migration tendencies of sympatric red deer and roe deer suggest multiple causes of migration in ungulates

et al. 2012

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Abstract. Understanding the drivers of seasonal migration among large herbivores is crucial for management and conservation. The forage maturation hypothesis predicts migration even at low population density, due to the benefits of increased access to newly emergent, high quality forage. We provide the first study comparing migration tendency of the two most widely distributed deer species in Europe, roe deer (Capreolus capreolus) and red deer (Cervus elaphus). The study was conducted in an area with a low population density of both species. We found that 94% of the GPS-collared red deer, but only 27% of the roe deer, migrated. This supports the forage maturation hypothesis in red deer only. Our study thus provides evidence of multiple causation of migration in ungulates, and is consistent with the hypothesis that the forage maturation hypothesis might be a more important driver for migration in grazers compared to browsers.

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“…For all analyses, we used only location data from the calving season (n = 2 seasons) and we screened this data to exclude locations with low precision (< 3-dimensional fixes; Lewis et al 2007) and/or associated with biologically unrealistic movements (Bjørneraas et al 2010). We further excluded locations between 10:00 and 18:00 hrs, an interval coinciding with limited movement presumably due to animals bedding down to avoid warm daytime temperatures.…”

Section: Wolf Gps Datamentioning

confidence: 99%

Spatial Patterning of Prey at Reproduction to Reduce Predation Risk: What Drives Dispersion from Groups?

DeMars

Breed

Potts

et al. 2016

The American Naturalist

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Group-living is a widespread behaviour thought to be an evolutionary adaptation for reducing predation risk. Many group-living species, however, spend a portion of their life cycle as dispersed individuals, suggesting that the costs and benefits of these opposing behaviours vary temporally. Here, we evaluated mechanistic hypotheses for explaining individual dispersion as a tactic for reducing predation risk at reproduction (i.e. birthing) in an otherwise group-living animal. Using simulation analyses parameterized by empirical data, we assessed whether dispersion increases reproductive success by: (i) increasing predator search time, (ii) reducing predator encounter rates because individuals are inconspicuous relative to groups, or (iii) eliminating the risk of multiple kills per encounter. Simulations indicate that dispersion only becomes favourable when detectability increases with group size and there is risk of multiple kills per encounter. This latter effect, however, is likely the primary mechanism driving females to disperse at reproduction because group detectability effects are presumably constant year round. We suggest that the risk of multiple kills imposed by highly vulnerable offspring may be an important factor influencing dispersive behaviour in many species and conservation strategies for such species will require protecting sufficient space to allow dispersion to effectively reduce predation risk.

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Screening Global Positioning System Location Data for Errors Using Animal Movement Characteristics

Cited by 178 publications

References 24 publications

Learning from the past to predict the future: using archaeological findings and GPS data to quantify reindeer sensitivity to anthropogenic disturbance in Norway

Learning from the past to predict the future: using archaeological findings and GPS data to quantify reindeer sensitivity to anthropogenic disturbance in Norway

Contrasting migration tendencies of sympatric red deer and roe deer suggest multiple causes of migration in ungulates

Spatial Patterning of Prey at Reproduction to Reduce Predation Risk: What Drives Dispersion from Groups?

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