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首页> 外文会议>Annual meeting of the International Society for the Systems Sciences >DYNAMICS AND VIABILITY OF THE CRITICALLY ENDANGERED CAT BA LANGUR: A NEW PERSPECTIVE FOR CONSERVATION ACTIONS
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DYNAMICS AND VIABILITY OF THE CRITICALLY ENDANGERED CAT BA LANGUR: A NEW PERSPECTIVE FOR CONSERVATION ACTIONS

机译：濒临灭绝的CAT BA LANGUR的动力学和可行性：保护行动的新视角

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The golden-headed or Cat Ba Langur (Trachypithecus poliocephalus poliocephalus) is an endemic species of Cat Ba Island in northern Vietnam. It is listed as a critically endangered species in the IUCN red list because of its small, isolated sub-populations and low population numbers. This study was undertaken to understand the trend of population development and the risk of extinction of the species in the future. This will help conservationists to minimize the risk of extinction, and develop better conservation strategies for this species. A number of methods were carried out to examine the conservation status and life history of the langurs. This included conducting in-depth interviews with 21 members of forest protection groups and 20 staff of the Cat Ba National Park, gathering secondary data from reports and other publications dating from 1997 onwards, and conducting field surveys. These information and data were then used to construct a simulation model for the dynamics and viability of the langur population. The study found that 12 groups of the langurs consisting of a total of 50 - 60 individuals with an average group size of 4.67 individuals survived on Cat Ba Island. Disturbed social structure is one of the most significant reasons causing the stable population in the past twelve years, and it is predicted to continue to stabilize in the next 10 years, reaching 86 individuals by 2050. The validation tests have confirmed that the model is sufficient to be used as a tool for policy analysis and decision making for conservationists on the island. The effects of reproducing population on birth rate, and birth rate are two factors which have the most influence on the number of langurs. This clearly implies that an increase in the reproducing population numbers and birth rate would have a significant effect on the growth of langur population in the long-term. Relocation of non-reproductive groups to reproductive units, strict protection and management are important strategies to save this critically endangered species from extinction.
机译：金头或吉婆叶猴（Trachypithecus poliocephalus poliocephalus）是越南北部吉婆岛的特有物种。由于其小而孤立的亚种群和低种群数量，它在自然保护联盟红色名录中被列为极度濒危物种。进行这项研究是为了了解种群发展的趋势以及将来该物种灭绝的风险。这将有助于保护主义者最大限度地减少灭绝的风险，并为该物种制定更好的保护策略。采取了许多方法来检查叶猴的保护状况和生活史。这包括对21个森林保护小组成员和20个吉婆国家公园的工作人员进行深入采访，从1997年以后的报告和其他出版物中收集二级数据，并进行实地调查。这些信息和数据随后被用于构建用于叶猴种群的动力学和生存力的模拟模型。研究发现，在吉婆岛上幸存了12组叶猴，总共50至60只，平均每组4.67只。社会结构失调是过去十二年来导致人口稳定的最重要原因之一，预计在未来十年将继续稳定，到2050年将达到86个人。验证测试已证实该模型是足够的用作岛上保护主义者的政策分析和决策工具。繁殖人口对出生率的影响和出生率是对叶猴数量影响最大的两个因素。这显然意味着，从长远来看，繁殖种群数量和出生率的增加将对叶猴数量的增长产生重大影响。将非生殖群体迁移到生殖单位，严格的保护和管理，是使这一极度濒危物种免于灭绝的重要战略。

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