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- W1969826611 abstract "Abstract In this study, we tested whether terrain-based visibility modelled from a remotely sensed ASTER Digital Elevation Model (DEM) explains sable flight initiation distance (FID) better than vegetation-based visibility measured in the field. We also tested whether the effect of hunting on sable FID varies with spatial scale. We first performed a linear regression analysis relating FID to standardized coefficients of both vegetation- and terrain-based visibility where the variable with the larger coefficient was the better predictor of FID. We latter performed an analysis of covariance (ANCOVA) comparing the slopes relating FID to both measures of visibility, first at the large scale and later at the small scale within the hunting area. Our results suggest that remotely sensed terrain-based visibility predicts the FID of sable better than vegetation-based visibility. We also found that the effect of hunting on sable FID varies with spatial scale. Keywords: ASTER DEMflight initiation distanceGISremote sensingviewshed Acknowledgements We are grateful to the Director-General of the Zimbabwe Parks and Wildlife Management Authority (ZPWMA), V. Chadenga, for permission to carry out this study. Thanks also to ZPWMA: Chief Ecologist, H. Madzikanda and Area Managers, T. Jura and Mkwebu for logistical support. We also thank F. Nleya, J. Magaya and C. Ncube for their resilience in the field. We also acknowledge the technical support of M. Masocha, and M. Zvidzai. This work was conducted within the framework of the Research Platform “Production and Conservation in Partnership” RP-PCP. We thank the Ministère Français des Affaires Etrangères for the financial support through the French Embassy in Zimbabwe (RP-PCP grant/Project ECO#3)." @default.
- W1969826611 created "2016-06-24" @default.
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- W1969826611 date "2013-04-01" @default.
- W1969826611 modified "2023-10-01" @default.
- W1969826611 title "Comparing terrain and vegetation-based visibility for explaining sable flight behaviour in a Southern African savanna" @default.
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- W1969826611 doi "https://doi.org/10.1080/10106049.2012.677481" @default.
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