Table 4 in Complexities associated with elephant impact on Sclerocarya birrea subsp. caffra in the Greater Kruger National Park
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Table 4 Comparison of the total mortality percentages and annual mortality rates of marula trees since 2013 across height classes for the 2016 and 2018 surveys in Jejane Private Nature Reserve. Height class5–8 m (n = 17)8–11 m (n = 78)11–15 m (n = 98)> 15 m (n = 8)Total tree mortality (%)2016 survey (3-year elephant presence)41.1828.2119.3912.502018 survey (5-year elephant presence)76.4750.0025.5112.50% change between survey years35.2921.796.120Annual mortality rate (% dead trees per year)2016 survey (3-year elephant presence)13.736.466.464.172018 survey (5-year elephant presence)15.2910.005.102.50% change between survey years1.563.54− 1.36− 1.67
表4 杰贾内私人自然保护区(Jejane Private Nature Reserve)2016年与2018年调查中,2013年以来不同高度等级的马鲁拉树(Marula tree)总死亡率百分比及年死亡率对比。 | 统计指标 | 5–8 m(n=17) | 8–11 m(n=78) | 11–15 m(n=98) | >15 m(n=8) | |-------------------------|---------------|---------------|----------------|-------------| | 总树木死亡率(%) | | | | | | 2016年调查(大象驻留时长3年)| 41.18 | 28.21 | 19.39 | 12.50 | | 2018年调查(大象驻留时长5年)| 76.47 | 50.00 | 25.51 | 12.50 | | 总死亡率两次调查间变化百分比 | 35.29 | 21.79 | 6.12 | 0 | | 年死亡率(%/年,每年死亡树木百分比) | | | | | | 2016年调查(大象驻留时长3年)| 13.73 | 6.46 | 6.46 | 4.17 | | 2018年调查(大象驻留时长5年)| 15.29 | 10.00 | 5.10 | 2.50 | | 年死亡率两次调查间变化百分比 | 1.56 | 3.54 | −1.36 | −1.67 |



