| Autor: |
McLeod EM; Applied Ecology Research Group and Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, Melbourne, Australia., Guay PJ; Applied Ecology Research Group and Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, Melbourne, Australia ; College of Health and Biomedicine, Victoria University, Melbourne, Australia., Taysom AJ; Applied Ecology Research Group and Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, Melbourne, Australia., Robinson RW; Applied Ecology Research Group and Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, Melbourne, Australia., Weston MA; Centre for Integrative Ecology, Faculty of Science, Engineering and the Built Environment, School of Life and Environmental Sciences, Burwood, Australia. |
| Abstrakt: |
One way to manage disturbance to waterbirds in natural areas where humans require access is to promote the occurrence of stimuli for which birds tolerate closer approaches, and so cause fewer responses. We conducted 730 experimental approaches to 39 species of waterbird, using five stimulus types (single walker, three walkers, bicycle, car and bus) selected to mimic different human management options available for a controlled access, Ramsar-listed wetland. Across species, where differences existed (56% of 25 cases), motor vehicles always evoked shorter flight-initiation distances (FID) than humans on foot. The influence of stimulus type on FID varied across four species for which enough data were available for complete cross-stimulus analysis. All four varied FID in relation to stimuli, differing in 4 to 7 of 10 possible comparisons. Where differences occurred, the effect size was generally modest, suggesting that managing stimulus type (e.g. by requiring people to use vehicles) may have species-specific, modest benefits, at least for the waterbirds we studied. However, different stimulus types have different capacities to reduce the frequency of disturbance (i.e. by carrying more people) and vary in their capacity to travel around important habitat. |
