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Habitat estimates reveal that there are fewer than 400 Guizhou snub-nosed monkeys, Rhinopithecus brelichi, remaining in the wild
Global Ecology and Conservation ( IF 4 ) Pub Date : 2020-07-02 , DOI: 10.1016/j.gecco.2020.e01181
Guo Yanqing , Ren Baoping , Dai Qiang , Zhou Jun , Paul A. Garber , Zhou Jiang

Population size is a critical indicator used to assess the demographic profile and conservation status of animal species living in disturbed habitats. Using GIS technology, we calculated the remaining habitat area and estimated the population size of the Guizhou snub-nosed monkey (Rhinopithecus brelichi), an Endangered primate endemic to China. The last remaining population of this species resides in the Fanjingshan National Nature Reserve (FNNR). We combined data on forest cover and patterns of group movement to estimate the size and continuity of their habitat. The results indicated that the area of remaining suitable habitat is 69.6 km2. However the monkeys are confined to an area of only 27.8 km2 (6.6% of the total reserve area of 419 km2) located in the northern part of the reserve. The remaining 28.5 km2 of suitable habitat is located in the southern part of the reserve and inaccessible to the monkeys because of the recent construction of an aerial tram. Based on estimates of population density, we calculated that the remaining world’s population of R. brelichi is approximately 125–336 individuals. In order to protect this species from extinction, we recommend that the highly fragmented evergreen and deciduous broadleaf mixed forest adjacent to the remaining troop’s home range be given protected status and an active program of forest regeneration in this area be implemented immediately.



中文翻译:

栖息地估计表明,野外还剩下不到400只贵州金丝猴,即鼻犀(Rhinopithecus brelichi)

种群数量是用于评估生活在受干扰的生境中的动物物种的人口概况和保护状况的重要指标。我们使用GIS技术计算了剩余的栖息地面积,并估算了贵州特有的濒临灭绝的灵长类灵长鼻猴(Rhinopithecus brelichi)的种群数量。该物种的最后剩余种群居住在梵净山国家自然保护区(FNNR)。我们结合了森林覆盖率和群体移动方式的数据,以估算其栖息地的大小和连续性。结果表明,剩余适宜生境面积为69.6 km 2。但是,猴子被限制在仅27.8 km 2的区域内(占419 km 2的总保护区的6.6%))位于保护区的北部。其余28.5 km 2的合适栖息地位于保护区的南部,由于最近建造了空中电车,猴子无法进入。根据人口密度的估计,我们计算出世界其余的R. brelichi人口约为125-336个人。为了保护该物种免遭灭绝,我们建议对与剩余部队居住地相邻的高度零散的常绿和落叶阔叶混交林给予保护,并立即在该地区实施积极的森林更新计划。

更新日期:2020-07-02
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