Preliminary Survey of Relative Group Density of Macaca fuscata yakui in Relation to Logging History at Seven Sites in Yakushima, Japan
Preliminary Survey of Relative Group Density of Macaca fuscata yakui in Relation to Logging History at Seven Sites in Yakushima, Japan
复制标题
日本屋久岛七处猕猴相对群体密度与采伐史关系的初步调查
DOI：
10.2354/psj.10.85
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Shigeru Suzuki
中科院分区：
文献类型：
--
作者：
D. Hill;N. Agetsuma;Shigeru Suzuki
由于伐木、次生生长和针叶林种植，Yakushima猕猴的森林栖息地质量各不相同。对代表不同栖息地质量的7个地点的猕猴种群进行了初步调查。所有地点都位于海拔300-800米之间，位于日本屋久岛西北部(30°N，131°E)的暖温带阔叶林地带。利用林业地图的图像分析，评估了每个地点1平方公里范围内的伐木程度。前25年内采伐的样地比例为0~68%，50年内为0~79%，75年内为28~79%。在2.2至3.5公里的人口普查小径上，总共记录了284小时的猕猴观察、发声和排泄物。这包括每个站点的四天(7.5-8.5小时)，用于分析。所有地点都发现了猕猴。平均群落数为0.11~0.82个/千米/天，且与成熟林比例呈正相关(rS=0.64)。群体的平均检测率和发现粪便的比率之间没有明显的相关性。在短期调查中，后者可能是相对群体密度的一种不太准确的衡量标准。尽管Yakushima猕猴在伐木严重的25年内确实会利用这些地区，但在伐木时间较短和/或范围较小的地区发现了更多的群体。目前正在进行一项长期调查，评估这种关系的细节、林业种植园的影响以及不同栖息地类型的使用的季节性变化。
The forest habitat of the Yakushima macaque varies in quality as a result of logging, secondary growth and conifer plantations. A preliminary survey was made of macaque populations at 7 sites representing a range of habitat quality. All sites were located at between 300 and 800m asl, in the warm temperate broad-leaved forest zone in northwest Yakushima (30°N, 131°E), Japan. The extent of logging within a 1km2 plot at each site was assessed using image analysis of forestry maps. The proportion of the plot which had been logged within the previous 25 years ranged from 0 to about 68%, within 50 years from 0 to 79%, and within 75 years from 28 to 79%. Observations, vocalisations and droppings of macaques were recorded for a total of 284hr along census trails of between 2.2 and 3.5km. This included four ‘full’ days (7.5-8.5hr) for each site, which were used for the analyses. Macaques were found at all sites. The mean number of groups seen or heard ranged from 0.11 to 0.82/km/day, and was positively correlated (rs=0.64) with the proportion of mature forest at each site. There was no clear correlation between the mean detection rate of groups and the rate at which droppings were found. The latter may be a less accurate measure of relative group density in a short-term survey. Although Yakushima macaques do utilise areas within 25 years of heavy logging, more groups were found in areas where logging was less recent and/or less extensive. A long-term survey is now underway which will assess the details of this relationship, the influence of forestry plantations, and seasonal variation in use of different habitat types.