Strategies of habitat use by mountain gorillas.
Strategies of habitat use by mountain gorillas.
复制标题
山地大猩猩的栖息地利用策略。
DOI：
10.1159/000156521
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
D. Watts
中科院分区：
文献类型：
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作者：
D. Watts
山地大猩猩组的家庭范围使用模式在这里检查有关的食物丰富度和质量，饮食质量和降雨量的变化，不同的社会单位之间的相互作用和危险（偷猎风险）的分布。栖息地质量的变化影响长期的面积占用密度和短期的运动参数（日行程长度和连续的觅食地点之间的距离）。观察到的家域使用模式增加了大猩猩的觅食效率。降雨影响的均匀度的家庭范围使用略有，但这是唯一的季节性变化。与其他大猩猩和偷猎风险的相互作用叠加在食物分布模式的基本影响的直接影响。从一个更大的样本组的数据显示，一天的行程长度组的大小的积极影响，但这是明显的，只有在非常小和相对较大的组的大小。即使是大型团体，每天旅行的绝对距离也往往很短。这些数据支持了山地大猩猩的社会觅食成本很低的论点。
Patterns of home range use by a mountain gorilla group are examined here in relation to variation in food abundance and quality, diet quality and rainfall, to interactions between different social units and to the distribution of hazards (poaching risk). Variation in habitat quality influenced both long-term area occupation densities and shorter-term movement parameters (day journey length and the distance moved between consecutive feeding sites). Observed home range use patterns increased the gorillas' foraging efficiency. Rainfall influenced the evenness of home range use slightly, but this was the only seasonal variability. Interactions with other gorillas and poaching risk had proximate effects superimposed on the fundamental influence of food distribution patterns. Data from a larger sample of groups show a positive influence of group size on day journey length, but this was apparent only at very small and relatively large group sizes. The absolute distance travelled per day tends to be short even for large groups. The data support arguments that the costs of social foraging are low for mountain gorillas.