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巴基斯坦卡干和锡兰山谷亚洲黑熊( )的海拔分布与季节性迁徙

Altitudinal distribution and seasonal migration of asiatic black bear () in kaghan and Siran Valleys, Pakistan.

作者信息

Ullah Zaib, Said Amir, Khan Abdul Majid, Ullah Asad, Noreen Shumaila, Mahmood Sajid

机构信息

School of Life and Environmental Sciences, Faulty of SEBE, Deakin University Waurn Ponds Campus, Victoria 3216, Australia.

Department of Zoology, Hazara University Sub-Campus Battagram, Khyber Pakhtunkhwa, Pakistan.

出版信息

Heliyon. 2023 Jul 7;9(7):e18052. doi: 10.1016/j.heliyon.2023.e18052. eCollection 2023 Jul.

Abstract

The Asiatic black bear () is considered one of the largest carnivores inhabiting different territories including coniferous and broad-leaved forests, extending from sea level to the elevation of 4300 m. The Kaghan and Siran Valleys in Pakistan's District Mansehra were the location of the current study. To evaluate the altitudinal distribution and seasonal movement of Asiatic black bears in the region, we used three approaches (sign distribution survey, questionnaire-based survey, and scat collecting). A total of 1858 bear signs were observed during the field survey, the highest number of signs was dig marks (1213) followed by plant uprooting. Dig marks (MER: 7.574) were observed repeatedly in each potential site of both valleys followed by plant uprooting (MER: 1.594). Similarly, the altitudinal distribution of black bears was determined through the frequency of signs concerning elevation (m). Elevation of the study area ranged from 1300 to 3500 m and the most abundant population was recorded at the elevation of 2501-3000 m followed by 2001-2500 m. About 52% of local communities encountered black bears during the summer season in the field followed by Spring (23%.8) and winter (15.3%). Manshi Reserver forest (24.5%) from Kaghan and Panjul Reserve forest (31.6) from Siran Valley are the potential summer migratory spots. Eleven scat samples were collected with a 0.103 encounter rate (ER). Most of the scats (about 70%) were observed within the maize crop field in the summer season at low elevation, while just 30% of the scat was observed in the winter season in the forest.

摘要

亚洲黑熊( )被认为是栖息在包括针叶林和阔叶林等不同地域的最大食肉动物之一,其分布范围从海平面延伸至海拔4300米。巴基斯坦曼塞赫拉县的卡干和锡兰山谷是本研究的地点。为了评估该地区亚洲黑熊的海拔分布和季节性移动情况,我们采用了三种方法(迹象分布调查、问卷调查和粪便收集)。在实地调查中总共观察到1858个熊的迹象,其中数量最多的迹象是挖掘痕迹(1213个),其次是植物连根拔起的痕迹。在两个山谷的每个潜在地点都反复观察到挖掘痕迹(平均迹象率:7.574),其次是植物连根拔起的痕迹(平均迹象率:1.594)。同样,通过与海拔(米)相关的迹象频率来确定黑熊的海拔分布。研究区域的海拔范围为1300至3500米,记录到数量最多的种群位于海拔2501 - 3000米处,其次是2001 - 2500米处。在实地调查中,约52%的当地社区在夏季遇到过黑熊,其次是春季(23.8%)和冬季(15.3%)。卡干的曼希保留林(24.5%)和锡兰山谷的潘朱尔保留林(31.6%)是潜在的夏季迁徙地点。共收集到11份粪便样本,遭遇率为0.103。大部分粪便(约70%)是在夏季低海拔的玉米作物田中观察到的,而冬季在森林中仅观察到30%的粪便。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f3b7/10362140/652d6642df0d/gr1.jpg

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