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Population dynamics of wild Asian elephants over the past fifty years

  • TANG Yongjing ,
  • YANG Cong ,
  • YANG Zicheng ,
  • CHEN Fei
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  • Southwest Survey and Planning Institute of National Forestry and Grassland Administration, Asian Elephant Research Center of National Forestry and Grassland Administration, Kunming 650000, China

Received date: 2022-12-20

  Revised date: 2023-07-31

  Online published: 2023-09-22

Abstract

The Asian elephant (Elephas maximus) is the flagship species of tropical forest ecosystems in Asia and plays an important role in increasing species richness and maintaining ecosystem services. Affected by habitat loss and degradation, illegal poaching, and human-elephant conflict, the distribution and population size of the world’s wild Asian elephants have declined significantly compared to the past. In order to explore the distribution, population changes, and current conservation needs of wild Asian elephants, this paper reviews the research on the historical distribution, population dynamics, threat factors, traditional culture, laws and regulations, and conservation action plans of Asian elephants in South and Southeast Asia and China over the past 50 years, and draws the following conclusions: (1) In the past 50 years, the global wild Asian elephant population has shown an early trend of decline and then growth, followed by a continued decline between 1970 - 2000 and gradually increased between 2000 - 2010, and slow growth since 2010. (2) South Asia is an important area for stabilizing the global wild Asian elephant population, mainly due to timely legislative protection, strong traditional culture protection and other factors. The continuous decline of Asian elephant populations in Southeast Asia is mainly affected by deforestation and illegal poaching. The large-scale loss of forest habitat is the main reason for its continuous decline in Indonesia, Borneo, and other regions. The main reasons for the decline in Myanmar and Thailand are illegal poaching and smuggling. (3) The existing habitats in South Asia are relatively concentrated, there are more fragmented habitats in Southeast Asia, and Myanmar has more potential distribution areas. (4) At present, the main threats to wild Asian elephants are habitat loss and degradation, poaching and illegal trade, and human-elephant conflicts. In addition, problems associated with infrastructure construction, cross-border difficulties, and isolated populations cannot be ignored. Scientific and reasonable protection measures should be formulated taking into account the local challenges faced by Asian elephant populations, and on the basis of carrying out sufficient scientific research.

Cite this article

TANG Yongjing , YANG Cong , YANG Zicheng , CHEN Fei . Population dynamics of wild Asian elephants over the past fifty years[J]. ACTA THERIOLOGICA SINICA, 2023 , 43(5) : 593 -607 . DOI: 10.16829/j.slxb.150768

References

Alfred R, Ahmad A H, Payne J B, William C, Ambu L. 2010. Density and population estimation of the Bornean elephants (Elephas maximus borneensis) in Sabah. OnLine Journal of Biological Sciences, 10 (2):92-102.
Alfred R J, Ambu L N, Nathan S K S S, Goossens B. 2011. Current status of Asian elephants in Borneo. Gajah, 35:29-35.
AsERSM. 2006. First Asian Elephant Range States Meeting National Report. Kuala Lumpur, Malaysia.
AsERSM. 2017. Second Asian Elephant Range States Meeting National Report. Jakarta, Indonesia.
AsERSM. 2022. Third Asian Elephant Range States Meeting National Report. Kathmandu, Nepal.
Austin K G, Schwantes A, Gu Y, Kasibhatla P S. 2019. What causes deforestation in Indonesia? Environmental Research Letters, 14(2):024007.
Bai D F, Wan X R, Zhang L, Campos-Arceiz A, Wei F W, Zhang Z B. 2022. The recent Asian elephant range expansion in Yunnan, China, is associated with climate change and enforced protection efforts in human-dominated landscapes. Frontiers in Ecology and Evolution, 10:889077.
Baskaran N, Varma S, Sar C K, Sukumar R. 2011. Current status of Asian elephants in India. Gajah, 35:47-54.
Begley C. 2006. A Report on the Elephant Situation in Burma. EleAid.
Blouch R A, Haryanto. 1984. Elephants in southern Sumatra. IUCN/WWF Project 3033, Bogor, Indonesia.
Campos-Arceiz A, Blake S. 2011. Megagardeners of the forest-the role of elephants in seed dispersal. Acta Oecologica, 37 (6):542-553.
Campos-Arceiz A, de la Torre J A, Wei K, O. Wu X Y, Zhu Y F, Zhao M X, Chen S, Bai Y, Corlett R T, Chen F. 2021. The return of the elephants:How two groups of dispersing elephants attracted the attention of billions and what can we learn from their behavior. Conservation Letters, 14 (6):e12836.
Cao T L. 2011. Current status of Asian elephants in Vietnam. Gajah, 35:104-109.
Caughley G. 1980. Comments on elephants in Burma. Gajah, 14:1-9.
Chakraborty T R. 1996. The ecology and conservation of elephants(Elephas maximus). Dhaka:Jahangirnagar University.
Cheah C, Yoganand K. 2022. Recent estimate of Asian elephants in Borneo reveals a smaller population. Wildlife Biology, 2:e01024.
Cuong T V, Lien T T, Giao P M. 2002. The present status and management of domesticated Asian elephants in Viet Nam. Giants on Our Hands-Proceedings of the International Workshop on the Domesticated Asian Elephant. Bangkok, Thailand.
Davies G, Payne J. 1982. A faunal survey of Sabah. WWF-Malaysia.
Department of National Parks and Wildlife Conservation (DNPWC). 2009. Elephant Conservation Action Plan for Nepal. Government of Nepal, Ministry of Forestsand Soil Conservation.
Duckworth J W, Hedges S A. 1998. Review of the Status of Tiger, Elephant Asian, Gaur and Banteng in Vietnam, Lao, Cambodia and Yunnan Province (China), with Recommendations for Future Conservation Action. Indochina Programme WWF, Hanoi, Vietnam.
Feng Y, Ziegler A D, Elsen P R, Liu Y, He X Y, Spracklen D V, Holden J, Jiang X, Zheng C M, Zeng Z Z. 2021. Upward expansion and acceleration of forest clearance in the mountains of Southeast Asia. Nature Sustainability, 4 (10):892-899.
Fernando P, de Silva M K C R, Jayasinghe L K A, Janaka H K, Pastorini J. 2019. First country-wide survey of the endangered Asian elephant:towards better conservation and management in Sri Lanka. Oryx, 55 (1):46-55.
Fernando P, Jayewardene J, Prasad T, Hendavitharana W, Pastorini J, Lanka. S. 2011. Current status of Asian elephants in Sri Lanka. Gajah, 35:93-103.
Fernando P, Pastorini J. 2011. Range-wide status of Asian elephants. Gajah, 35:15-20.
Fernando P, Pfrender M E, Encalada S E, Lande R. 2000. Mitochondrial DNA variation, phylogeography and population structure of the Asian elephant. Heredity (Edinb), 84 (3):362-372.
Fernando P. 2006. Relative Abundance and Movement Patterns of Wild Elephants, Assessment of the Level of Human-Elephant Conflict and Effectiveness of Management Strategies in the Southern Region. PAMWCP, Department of Wildlife Conservation and Asian Development Bank, Sri Lanka.
Fleischer R C, Perry E A, Muralidharan K, Stevens E E, Wemmer C M. 2001. Phylogeography of the asian elephant (Elephas maximus) based on mitochondrial DNA. Evolution, 55 (9):1882-1892.
Foenander E C. 1952. Big Game of Malaya. London:The Batchworth Press.
General Directorate of Administration for Nature Conservation and Protection (GDANCP). 2020. Asian Elephant Conservation Action Plan for Cambodia (2020-2029). Ministry of environment, Cambodia.
Government of India Ministry of Environment, Forest and Climate Change (MoEF & CC). 2019. Proceedings of the Second meeting and field visit of Central Project Elephant Monitoring Committee (CPEMC). Indria Paryavaran Bhavan, New Delhi-110003, No. 14-1.
Gray T N E, Vidya T N C, Potdar S, Bharti D K, Sovanna P. 2014. Population size estimation of an Asian elephant population in eastern Cambodia through non-invasive mark-recapture sampling. Conservation Genetics, 15 (4):803-810.
Hankinson E, Nijman V, Abdullah. 2020. Asian elephants:15 years of research and conservation. Journal of Physics Conference Series, 1460 (1):012055.
Hansen M C, Potapov P V, Moore R, Hancher M, Turubanova S A, Tyukavina A, Thau D, Stehman S V, Goetz S J, Loveland T R, Kommareddy A, Egorov A, Chini L, Justice C O, Townshend J R. 2013. High-resolution global maps of 21st-century forest cover change. Science, 342 (6160):850-853.
Heffernan P J, Cuong T V. 2004. A review of the conservation status of the Asian elephant in Vietnam. Fauna and Flora International, Cambridge.
Htet N N P, Chaiyarat R, Thongthip N, Anuracpreeda P, Youngpoy N, Chompoopong P. 2021. Population and distribution of wild Asian elephants (Elephas maximus) in Phu Khieo Wildlife Sanctuary, Thailand. PeerJ, 9:e11896.
Huang H T. 2016. Elephants moving back while humanity pushing forward-new exploration of causes for the reduction of Yunnan elephant distribution area. Academic Exploration, (7):130-135.(in Chinese)
Iljas B, Masakazu K. 2002. Proceedings of the International workshop on the domesticated Asian elephant. Food and Agriculture Organization of the United Nations Regional Office for Asia and the Pacific Bangkok, Thailand.
Islam A, Mohsanin S, Chowdhury G W, Aziz A H A, Uddin M, Saif S, Chakma S, Akter R, Azam I. 2011. Current status of Asian elephants in Bangladesh. Gajah, 35:21-24.
IUCN Bangladesh. 2016. Status of Asian Elephants in Bangladesh. IUCN, International Union for Conservation of Nature, Bangladesh Country Office, Dhaka, Bangladesh. xii+102.
Jayewardene J. 1994. The Elephant in Sri Lanka. Wildlife Heritage Trust of Sri Lanka, Colombo.
Jigme K, Williams A C. 2011. Current status of Asian elephants in Bhutan. Gajah, 35:25-28.
Kashio M. 2014. Summary of the International Workshop on the Domesticated Asian Elephant. Giants on Our Hands- Proceedings of the International Workshop on the Domesticated Asian Elephant. Bangkok, Thailand.
Kemf E, Jackson P. 1995. Asian Elephants in the Wild. World Wide Fund for Nature, Gland, Switzerland.
Khan M M K, Olivier R. 1974. The Asian Elephant (Elephas maximus) in West Malaysia. Its Past, Present, and Future. IBP/MAB Synthesis Meeting, University of Malaya.
Khan M M K. 1985. Elephants in Peninsular Malaysia. WWF, Gland, Switzerland.
Khoi L V, Tuoc D. 1992. The status of elephants and their conservation in Vietnam. In:Proceedings of the Asian Elephant Specialist Group Meeting, Bogor, Indonesia.
Khounboline K. 2007. Human-elephant conflict (HEC) pilot study in southern Lao PDR. Gajah, 26:18-20.
Khounboline K. 2011. Current status of Asian elephants in Lao PDR. Gajah, 35:62-66.
Körner C, Jetz W, Paulsen J, Payne D, Rudmann-Maurer K M, Spehn E. 2016. A global inventory of mountains for bio-geographical applications. Alpine Botany, 127 (1):1-15.
Lahiri C D K. 1980. The elephant in northeast India. IUCN/SSC Asian Elephant Specialist Group, c/o Bombay Natural History Society, Bombay.
Leimgruber P, Oo Z M, Aung M T T, Kelly D S, Wemmer C, Senior B, Songer M. 2011. Current status of Asian elephants in Myanmar. Gajah, 35:76-86.
Lekagul B, Mcneely J A. 1977. Elephants in Thailand:importance, status and conservation. Tigerpaper, 4 (3):22-25.
Li L L, Wang Q Y, Yang H P, Tao Y X, Wang L X, Yang Z B, CamposArceiz A, Quan R C. 2022. Mobile animals and immobile protected areas:improving the coverage of nature reserves for Asian elephant conservation in China. Oryx:1-8.
Lohanan R. 2002. The elephant situation in Thailand and a plea for co-operation. Giants on Our Hands- Proceedings of the International Workshop on the Domesticated Asian Elephant. Bangkok, Thailand.
Luo L, Wang X Y, Guo H D, Zhu L W, Ma Y X, Yang R X, Wang S Y, Wang G Z, Wang M, Shao J, Liu C S. 2022. Eighteen years(2001-2018) of forest habitat loss across the Asian elephant's range and its drivers. Science Bulletin, 67 (15):1513-1516.
Mahmood T, Vu T T, Campos-Arceiz A, Akrim F, Andleeb S, Farooq M, Hamid A, Munawar N, Waseem M, Hussain A, Fatima H, Khan M R, Mahmood S. 2021. Historical and current distribution ranges and loss of mega-herbivores and carnivores of Asia. PeerJ, 9:e10738.
Maltby M, Bourchier G. 2011. Current status of Asian elephants in Cambodia. Gajah, 35:36-42.
Margono B A, Potapov P V, Turubanova S, Stolle F, Hansen M C. 2014. Primary forest cover loss in Indonesia over 2000-2012. Nature Climate Change, 4 (8):730-735.
McKay G M. 1973. Behavior and Ecology of the Asiatic Elephant in Southeastern Ceylon. Washington:Smithsonian Institution Press.
McWilliam A. 2008. Monitoring and mitigation of human-elephant conflict at a hydropower project site in Lao PDR. International Elephant Conservation and Research Symposium. Pattaya, Thailand.
Menon V, Tiwari S K R. 2019. Population status of Asian elephants Elephas maximus and key threats. International Zoo Yearbook, 53 (1):17-30.
Myint A. 1997. On the distribution, status and conservation of wild elephants in Myanmar. Gajah, 18:47-55.
Nature Conservation Division (NCD). 2019. Elephant Action Plan for Bhutan (2018-2028). Department of Forests and Park Services, Ministry of Agriculture and Forests, Thimphu, Bhutan.
Neupane D, Johnson R L, Risch T S. 2017. How do land-use practices affect human-elephant conflict in Nepal? Wildlife Biology, 2017 (1):1-9.
Nguyen X D. 2015. An overview of conservation status of wild Asian elephant Elephas maximus in Vietnam. A technical report for WWF-Vietnam, Hanoi.
Nijman V. 2014. An assessment of the live elephant trade in Thailand. Traffic International.
Olivier R. 1978. Distribution and status of the Asian elephant. Oryx, 14 (4):379-424.
Othman N, Goossens B, Cheah C P I, Nathan S, Bumpus R, Ancrenaz M. 2019. Shift of paradigm needed towards improving human-elephant coexistence in monoculture landscapes in Sabah. International Zoo Yearbook, 53 (1):161-173.
Perera O. 2009. The human-elephant conflict:A review of current status and mitigation methods. Gajah, 30:41-52.
Ram A K, Acharya H. 2020. Status distribution and habitat use by Asian elephants in Nepal. A compendium of conservation news bulletin published by Department of National Parks and wildlife Conservation, Kathmandu.
Saaban S, Othman N. 2002. A study on the home range and habitat utilization of a translocated elephant (Elephas maximus) using satellite transmitter in Terengganu National Park. Journal of Wildlife and Parks, 20:21-26.
Saaban S B, Othman N, Yasak M N, Nor B M, Zafir A, Campos-Arceiz A, Lumpur K. 2011. Current status of Asian elephants in Peninsular Malaysia. Gajah, 35:67-75.
Sabah Wildlife Department. 2019. Bornean Elephant Action Plan for Sabah (2020-2029).
Santiapillai C, Jackson P. 1990. The Asian Elephant:An Action Plan for its Conservation. IUCN/SSC, Asian Elephant Specialist Group, Gland, Switzerland.
Shepherd C R. 2002. The Trade of Elephants and Elephant Parts in Myanmar. Traffic International, Cambridge, UK.
Shrestha J, Shrestha S. 2021. Asian elephants and their status in Nepal:a review. Journal of Agriculture and Natural Resources, 4(2):227-237.
Singh V B. 1978. The elephant in U. P. (India):a resurvey of its status after 10 years. Journal of the Bombay Natural History Society, 75:71-82.
Smith J L D, Mishra H R. 1992. Status and distribution of Asian elephants in Central Nepal. Oryx, 26:10-14.
Srikrachang M. 2003. Conservation and management of elephants in Thailand. Mahidol University, Bangkok.
Storer J P. 1981. Elephant populations in Thailand. Natural History Bulletin of the Siam Society, 29:1-30.
Sukumar R, Santipillai C. 1996. Elephas maximus:status and distribution. In:The Proboscidea:Evolution and Paleoecology of Elephants and Their Relatives. Oxford University Press, New York.
Sukumar R. 2003. The Living Elephants:Evolutionary Ecology, Behavior, and Conservation. New York:Oxford University Press.
Sukumar R. 2006. A brief review of the status, distribution and biology of wild Asian elephants Elephas maximus. International Zoo Yearbook, 40:1-8.
Sukumar R. 2011. The Story of Asia's Elephants. Marg, Mumbai, India.
Tang Y J, Li Z L, Jiang G L, Lv T, Zhang L, Zhao W L, Zhu G F, Chen M Y. 2020. Elephant culture matter for China's Asian elephant conservation. Journal of Zoological Research, 2 (2):23-26.
ten Velde P F. 1997. A status report on Nepal's wild elephant population. Digitally transcribed with permission from WWF International.
Teng S N, Xu C, Teng L, Svenning J C. 2019. Long-term effects of cultural filtering on megafauna species distributions across China. Proceedings of the National Academy of Science of the USA, 117 (1):486-493.
Tipprasert P. 2014. Elephants and ecotourism in Thailand. Giants on Our Hands-Proceedings of the International Workshop on the Domesticated Asian Elephant. Bangkok, Thailand.
Tripathy B R, Liu X, Songer M, Kumar L, Kaliraj S, Chatterjee N D, Wickramasinghe W M S, Mahanta K K. 2021. Descriptive spatial analysis of human-elephant conflict (HEC) distribution and mapping HEC hotspots in Keonjhar forest division, India. Frontiers in Ecology and Evolution, 9:640624
Venevongphet. 1988. The status of elephant in Lao PDR. Draft Proc. of the IUCN/SSC Asian Elephant Specialist Group Meeting.
Vidya T N C, Varma S, Dang N X, Van Thanh T, Sukumar R. 2007. Minimum population size, genetic diversity, and social structure of the Asian elephant in Cat Tien National Park and its adjoining areas, Vietnam, based on molecular genetic analyses. Conservation Genetics, 8 (6):1471-1478.
Vidya T N C. 2016. Evolutionary history and population genetic structure of Asian elephants in India. Indian Journal of History of Science, 51 (2. 2):391-405.
Wan X R, Jiang G S, Yan C, He F L, Wen R S, Gu J Y, Li X H, Ma J Z, Stenseth N C, Zhang Z B. 2019. Historical records reveal the distinctive associations of human disturbance and extreme climate change with local extinction of mammals. Proceedings of the National Academy of Science of the USA, 116 (38):19001-19008.
Wang Z H, Li Z L, Tang Y J, Yao C X, Liu Y, Jiang G L, Wang F, Liang L, Zhao W L, Zhu G F, Chen M Y. 2020. China's dams isolate Asian elephants. Science, 367 (6476):373-374.
Williams C, Tiwari S K, Goswami V R, de Silva S, Kumar A, Baskaran N, Yoganand K, Menon V. 2020. Elephas maximus. The IUCN Red List of Threatened Species, 2020:e. T7140A45818198.
Wisumperuma D. 2004. Human-elephant relationships in Sri Lanka:An historical and archaeological perspective. In:Endangered Elephants, Past Present and Future. Biodiversity and Elephant Conservation Trust, Rajagiriya, Sri Lanka.
Wulffraat S. 2006. The elephants of east Kalimantan. WWF Indonesia.
Yang N, Dai X H, Wang B, Wen M C, Gan Z L, Li Z L, Duffy K J. 2023. Mapping potential human-elephant conflict hotspots with UAV monitoring data. Global Ecology and Conservation, 43:e02451.
万勇. 2021. "北移亚洲象群安全渡过元江"新闻发布会报告. 云南昆明, 中国.
王方, 郑璇, 马杰, 王智红, 刘宇, 姚冲学, 李正玲, 陈明勇. 2019. 无人机技术在中国野生亚洲象调查研究及监测中的应用. 林业建设, 210 (6):38-44.
王利繁, 李泽君, 罗爱东, 张忠员, 杨丽琼. 2015. 中老跨边境生物多样性保护措施初探. 林业调查规划, 40 (2):149-152.
王曼, 刘铭宇, 王仕华, 谭栩吉, 岩光, 付潍毓, 饶婉钦, 郭贤明, 杨云, 陈明勇. 2023. 人工智能技术在西双版纳野生亚洲象监测预警中的首次应用. 野生动物学报:1-12[2023-08-09]. (网络首发)
王智红, 张恒振, 赵文蓝, 郑璇, 岩温扁, 李正玲, 陈明勇. 2019. 西双版纳勐海-普洱澜沧亚洲象种群动态分析. 林业建设, 210 (6):79-84.
云南省动物研究所兽类组. 1976. 云南野象的分布和自然保护. 动物学杂志, (2):38-39.
文焕然, 何业恒, 江应樑, 高耀亭. 1979. 历史时期中国野象的初步研究. 思想战线, (6):43-57.
文焕然, 文榕生. 1990. 再探历史时期中国野象的变迁. 西南师范大学学报 (自然科学版), (2):224-232.
吕婷, 郑璇, 朱高凡, 汤永晶, 蒋桂莲, 李正玲, 陈明勇. 2019. 西双版纳勐腊亚洲象种群数量动态分析. 林业建设, 210 (6):91-96.
朱高凡, 郑璇, 吕婷, 蒋桂莲, 汤永晶, 李正玲, 陈明勇. 2019. 西双版纳-普洱亚洲象种群动态分析. 林业建设, 210 (6):85-90.
汤永晶, 王志胜, 蒋桂莲, 郑璇, 黄元, 李正玲, 陈明勇. 2019. 云南南滚河流域亚洲象种群动态分析. 林业建设, 210 (6):97-102.
孙亚宽. 2021. 南滚河国家级自然保护区亚洲象种群生态特征及栖息地评估. 北京:北京林业大学硕士学位论文.
杨质高. 2021. 亚洲象监测预警保护系统上线一年发布预警 5000余次, 有效缓解人象冲突. 云南网. 2021 年 5 月 14 日.
吴金亮, 江望高, 胡健生, 李宗强, 李春红. 1999. 近 40 年来亚洲象在西双版纳的分布变迁. 野生动物, 20 (3):8-9.
吴得卿, 魏建华, 樊辉. 2021. 南滚河流域土地利用变化对亚洲象生境的影响. 生态学报, 41 (16):6476-6485.
张立. 2018. 中国亚洲象保护研究. 北京:科学出版社.
陈明勇, 汤永晶, 李正玲, 李永祥, 王志胜, 王智红. 2020. 中国南滚河亚洲象保护的民间知识与文化传统研究. 昆明:云南科技出版社.
陈明勇, 吴兆录, 董永华, 刘德军, 陈燕萍, 杨士剑. 2006. 中国亚洲象研究. 昆明:云南科技出版社.
陈明勇, 洪国政, 李正玲, 董永华, 杨云中. 2013. 中国人象冲突研究. 昆明:云南科技出版社.
周开华, 李有寿, 邓志云. 2021. 基于西双版纳亚洲象食物源基地建设的有效性探. 绿色科技, 23 (4):154-155.
郑进烜, 杨东, 朱能勋, 余昌元, 王勇, 郑静楠, 蔡文婧, 李元杰. 2022. 亚洲象栖息地恢复与食源地建设:以云南西双版纳国家级自然保护区为例. 林业调查规划, 47 (6):62-66.
赵宇, 金崑. 2018. 亚洲象分布、数量、栖息地状况及种群管理.世界林业研究, 31 (2):25-30.
赵思桃, 孔芳菲, 田恬. 2022. 亚洲象迁移过程中与人类冲突现状调查及对策建议:以西双版纳傣族自治州为例. 中国林副特产, (1):63-66.
胡宇轩, 张忠义, 杜宇晨, 谢屹. 2021. 人象冲突的国内外研究进展及展望:基于亚洲象对人的负面影响分析. 北京林业大学学报(社会科学版), 20 (2):72-79.
查茂盈. 2012. 中国象文化研究. 杨凌:西北农林科技大学硕士学位论文.
黄泓泰. 2016. 人进象退:云南象分布区域退缩原因新探. 学术探索, (7):130-135.
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