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使用最大熵模型预测埃塞俄比亚特有濒危狼的当前和未来适宜栖息地。

Predicting the current and future suitable habitats for endemic and endangered Ethiopian wolf using MaxEnt model.

作者信息

Berhanu Yericho, Tassie Nega, Sintayehu Dejene W

机构信息

Africa Center of Excellence for Climate Smart Agriculture and Biodiversity Conservation, Haramaya University, Ethiopia.

Department of Natural Resource Management, College of Agriculture and Natural Resources, Bonga University, Ethiopia.

出版信息

Heliyon. 2022 Aug 13;8(8):e10223. doi: 10.1016/j.heliyon.2022.e10223. eCollection 2022 Aug.

Abstract

The Ethiopian wolf, endemic to Ethiopia, is the most endangered species in the world. As flagship species, a wide range of studies has been conducted on the Ethiopian wolf. However, there is scanty information about the impact of climate change on this globally important species. Thus, this study aimed to predict the current and future suitable habitats of the species based on four Representative Concentration Pathway scenarios of IPCC for the years 2050 and 2070 by using the MaxEnt model. A total of 479 species occurrence records were obtained from the field survey and Global Biodiversity Information Facility. The 19 bioclimatic variables and altitude were downloaded from worldclim and extracted for the study area using GIS software. The Pearson correlation analysis was employed to detect correlation among variables and maintained 10 variables. The prediction potential of the model was evaluated and found excellent to predict the distribution of the species. The result depicted that suitable habitats for Ethiopian wolves will be badly affected by climate change. Currently, about 9.4% of the total landmass of Ethiopia is suitable for wolves. However, it will be lost in the forthcoming couple of decade under all scenarios of global climate change. Consequently, the Ethiopian wolf is highly suspected to be extinct globally in the mid of 21 century, unless corrective measures are done in time. Therefore, enhancing the adaptive capacity of species as well as genetic resource preservation and captive breeding is advisable.

摘要

埃塞俄比亚狼是埃塞俄比亚特有的物种,也是世界上最濒危的物种。作为旗舰物种,人们对埃塞俄比亚狼进行了广泛的研究。然而,关于气候变化对这一具有全球重要性的物种的影响,相关信息却非常匮乏。因此,本研究旨在利用最大熵(MaxEnt)模型,基于政府间气候变化专门委员会(IPCC)的四种代表性浓度路径情景,预测该物种在2050年和2070年的当前及未来适宜栖息地。通过实地调查和全球生物多样性信息设施共获取了479个物种出现记录。从worldclim下载了19个生物气候变量和海拔数据,并使用地理信息系统(GIS)软件为研究区域进行提取。采用皮尔逊相关分析来检测变量之间的相关性,并保留了10个变量。对模型的预测潜力进行了评估,发现其在预测该物种分布方面表现出色。结果表明,埃塞俄比亚狼的适宜栖息地将受到气候变化的严重影响。目前,埃塞俄比亚约9.4%的陆地总面积适合狼生存。然而,在全球气候变化的所有情景下,未来几十年内这些适宜栖息地都将丧失。因此,除非及时采取纠正措施,否则埃塞俄比亚狼极有可能在21世纪中叶全球灭绝。所以,提高物种的适应能力以及进行遗传资源保护和圈养繁殖是明智之举。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b553/9404360/cd9f1bc1f1a9/gr1.jpg

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