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Current conservation status of Germain's langur (Trachypithecus germaini) in Vietnam

机译：越南越南林林（Trachypithecus Germaini）的当前保护状况

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摘要

Following the split of the silvered langurs of Indochina into two species based on molecular and phenotypic data, there is a need to reevaluate their distribution and update their conservation status. Here, we report the distribution and assess the population size of Germain's langur (Trachypithecus germaini) within its known range across Vietnam. We confirmed this species at six of seven survey sites in different habitats within three provinces in the Mekong Delta Region, including semi-evergreen forest at the Seven Mountains of An Giang Province, mangrove forest in Ngoc Hien and Nam Can Districts and Melaleuca forest in U Minh Ha National Park of Ca Mau Province, and limestone forest at Kien Luong Karst Area and semi-evergreen and evergreen forests at Phu Quoc National Park of Kien Giang Province. We found no evidence of this species in Mui Ca Mau National Park, Ca Mau Province where it was previously reported. We conservatively estimate that the total population of Germain's langurs in Vietnam consists of 362-406 individuals, with the largest population found in the Kien Luong Karst Area. Hunting and habitat loss are severely impacting Germain's langur, resulting in the extirpation of the population in Mui Ca Mau National Park and small, isolated populations in the Seven Mountains and Ngoc Hien and Nam Can Districts. However, the ability of this species to inhabit a wide range of forest types, and its increasing population sizes in Phu Quoc National Park and Kien Luong Karst Area, provide signs of hope that continued conservation actions may help in its long-term survival.
机译：在Indochina的镀银叶片分成基于分子和表型数据的两种物种之后，需要重新评估其分布并更新其保护地位。在这里，我们在越南跨越越南的知名范围内报告分布并评估梅花植物（Trachypithecus germaini）的人口规模。我们在湄公河三角洲地区三个省份的七个省份中的六个调查遗址中的六个调查遗址中的六个种类确认了这一种类，其中包括半常绿森林，位于Ngoc Hien和Nam的红树林林和南部的美洲红树林Ca Mau Province的Minh Ha National Park和Kien Luong Karst地区的石灰石森林和普浦峡普省Phu Quoc国家公园的半常绿和常绿森林。我们没有发现在梅建马岛国家公园，加拿大省省的这种物种。我们保守地估计，越南牧民的兰德兰郎总人口由362-406人组成，在Kien Luong岩溶地区发现最大的人口。狩猎和栖息地损失严重影响了Germain的Langur，导致七山和Ngoc Hien和Nam Can Can Can Ca.然而，这种物种居住在广泛的森林类型的能力，以及Phu Quoc国家公园和Kien Luong岩溶地区的人口尺寸的增加，提供了持续保护行动可能有助于长期生存的迹象。

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