• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oryx >Zanzibar's endemic red colobus Piliocolobus kirkii: first systematic and total assessment of population, demography and distribution
【24h】

Zanzibar's endemic red colobus Piliocolobus kirkii: first systematic and total assessment of population, demography and distribution

机译：桑给巴尔地方性红色疣猴Piliocolobus kirkii：首次系统，全面评估人口，人口统计和分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We present the first systematic assessment of the population, demography and distribution of the Endangered Zanzibar red colobus Piliocolobus kirkii, in Unguja in the Zanzibar archipelago, based on a survey effort of 4,725 hours. We estimate the total population comprises 5,862 individuals in 342 groups (mean group size 17.12); 3.4 times the mean of all previous estimates. We calculated a total area of occupancy of 376 km(2), with 4,042 individuals living within protected areas. Mean group sizes were significantly higher within protected areas (20.57) than outside (12.80). The number of adult females was 3,179 (54.21%), with a mean of 9.29 per group, and the number of adult males was 932 (15.89%), with a mean of 2.71 per group, giving a ratio of 3.31 adult females to adult males. This ratio was significantly lower outside protected areas. The total number of infants was 958 (16.34%), with a mean of 2.80 per group, and the number of subadults/juveniles was 793 (13.52%), with a mean of 2.32 per group, giving ratios of 0.30 infants to adult females, and 0.25 subadults/juveniles to adult females. The results indicate that P. kirkii is resilient and thriving far better than assumed. However, recruitment is low and the population may be in decline, with individuals outside protected areas most at risk. We tentatively support the categorization of P. kirkii as Endangered on the IUCN Red List, argue for greater protected area status for southern Uzi, Vundwe and Mchamgamle, and discuss conservation implications for this charismatic flagship species.
机译：我们基于对4,725小时的调查工作，对位于桑给巴尔群岛的翁古雅的濒临灭绝的桑给巴尔红疣猴Piliocolobus kirkii的种群，人口统计和分布情况进行了首次系统评估。我们估计总人口包括342个组的5,862个人（平均组大小为17.12）；所有先前估计值的平均值的3.4倍。我们计算出总居住面积为376 km（2），其中4,042个人居住在保护区内。在保护区内（20.57），平均群体规模明显大于外面（12.80）。成年女性人数为3179（54.21％），每组平均为9.29；成年男性人数为932（15.89％），每组平均为2.71，成年女性与成年人的比例为3.31男性。该比率在保护区外明显较低。婴儿总数为958（16.34％），每组平均为2.80；亚成人/青少年的数量为793（13.52％），每组平均为2.32，婴儿与成年雌性的比例为0.30 ，以及成年女性的0.25个亚成人/少年。结果表明，P。kirkii具有复原力，并且比设想的要好得多。但是，招募人数很少，人口可能会下降，受保护地区以外的人面临的风险最大。我们暂时支持将kirkii归类为IUCN红色名录上的濒危物种，争取为Uzi，Vundwe和Mchamgamle南部的保护区地位提高，并讨论该超凡魅力旗舰物种的保护意义。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号