Data from: Movement responses of caribou to human-induced habitat edges lead to their aggregation near anthropogenic features ...
The assessment of disturbance effects on wildlife and resulting mitigation efforts are founded on edge-effect theory. According to the classical view, the abundance of animals affected by human disturbance should increase monotonically with distance from disturbed areas to reach a maximum at remote...
| Main Authors: | , , , , , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2013
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.kh356 https://datadryad.org/stash/dataset/doi:10.5061/dryad.kh356 |
| Summary: | The assessment of disturbance effects on wildlife and resulting mitigation efforts are founded on edge-effect theory. According to the classical view, the abundance of animals affected by human disturbance should increase monotonically with distance from disturbed areas to reach a maximum at remote locations. Here we show that distance-dependent movement taxis can skew abundance distributions toward disturbed areas. We develop an advection-diffusion model based on basic movement behavior commonly observed in animal populations and parameterize the model from observations on radio-collared caribou in a boreal ecosystem. The model predicts maximum abundance at 3.7 km from cutovers and roads. Consistently, aerial surveys conducted over 161,920 km2 showed that the relative probability of caribou occurrence displays nonmonotonic changes with the distance to anthropogenic features, with a peak occurring at 4.5 km away from these features. This aggregation near disturbed areas thus provides the predators of this ... : Average Vector DirectionData used to evaluate changes in the orientation of caribou with respect to the nearest road or cut block as a function of distance from these anthropogenic features (Fig. B1 Online Appendix B).AvgVectorDirection.xlsxData for GAM analysisData used to model the relative probability of occurrence of caribou track networks in winter as a function of the distance from the nearest anthropogenic disturbance (Table 1). Landscape features (distance from the nearest cut block or road, various land cover types) are provided at observed track network locations and at random locations.GAM.xlsHome RangeCharacteristics of home ranges of GPS-collared caribou in managed boreal forests. Home ranges were delineated using the Brownian bridge kernel method.Distance to human disturbances for VHF dataDistances between the centroid locations of VHF-collared caribou and the nearest cut, the nearest primary road and the nearest secondary road, according to whether the information was gathered in the current ... |
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