{"title":"模拟气候驱动的埃及保护区脆弱有蹄类动物栖息地适宜性","authors":"Karim Omar , Ayman Hamada","doi":"10.1016/j.jnc.2025.127102","DOIUrl":null,"url":null,"abstract":"<div><div>Understanding how species respond to climate change is crucial for effective conservation. This knowledge is essential for developing effective adaptive strategies, as climate-induced shifts in species distributions make protected areas a vital tool for future conservation planning. Protected areas may become ineffective if they remain within their current geographic boundaries without considering climate change in shaping critical climatic refuges for these species. Therefore, in this study, we used Species Distribution Models (SDMs) as a tool to analyze the impact of climate change on two vulnerable Egyptian ungulates: the Nubian ibex (<em>Capra nubiana</em>) and the dorcas gazelle (<em>Gazella dorcas</em>). We mapped their habitat suitability under current conditions and future “middle path” scenarios for the years 2050 and 2070. Our findings indicate that the Nubian ibex’s current habitats are concentrated in South Sinai and the Eastern Desert mountains, while the Dorcas gazelle has a broader distribution across Sinai, the Eastern Desert, and parts of the Western Desert. While both species are expected to lose parts of their current range, they are also projected to expand into new areas. For the Nubian ibex, suitable habitat is expected to remain largely stable, with a projected increase of approximately 23.9 % by 2050 and 24.5 % by 2070. Concurrently, the species is projected to lose about 10.2 % by 2050 and 10.5 % by 2070. The Dorcas gazelle is projected to gain a substantial amount of new habitat—about 27.1 % by 2050 and 27.9 % by 2070. However, this increase is balanced by an anticipated loss of approximately 25.6 % by 2050 and 25.7 % by 2070. The results showed that protected areas in Egypt play a vital role in preserving these species, as indicated by the high coverage rate. They currently cover over 56% of the Nubian ibex’s potential distribution, which is projected to increase to 60 % by 2050 and 59 % by 2070. For the Dorcas gazelle, coverage is currently 34 %, but is projected to decline to 31 % by 2050 and 30 % by 2070. Based on these findings, effective management of protected areas, including continuous monitoring, evaluation, and adaptive boundary adjustments, is crucial for conservation. This is especially important in the Red Sea Governorate, and should include creating new protected areas with stakeholder involvement. We recommend investing in long-term field surveys and building robust databases to understand future changes in species’ habitats, ecological conditions, and threats. This will help develop strong in-situ and ex-situ conservation strategies for protected areas.</div></div>","PeriodicalId":54898,"journal":{"name":"Journal for Nature Conservation","volume":"89 ","pages":"Article 127102"},"PeriodicalIF":2.5000,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modeling climate-driven habitat suitability of vulnerable ungulates in Egypt’s protected areas\",\"authors\":\"Karim Omar , Ayman Hamada\",\"doi\":\"10.1016/j.jnc.2025.127102\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Understanding how species respond to climate change is crucial for effective conservation. This knowledge is essential for developing effective adaptive strategies, as climate-induced shifts in species distributions make protected areas a vital tool for future conservation planning. Protected areas may become ineffective if they remain within their current geographic boundaries without considering climate change in shaping critical climatic refuges for these species. Therefore, in this study, we used Species Distribution Models (SDMs) as a tool to analyze the impact of climate change on two vulnerable Egyptian ungulates: the Nubian ibex (<em>Capra nubiana</em>) and the dorcas gazelle (<em>Gazella dorcas</em>). We mapped their habitat suitability under current conditions and future “middle path” scenarios for the years 2050 and 2070. Our findings indicate that the Nubian ibex’s current habitats are concentrated in South Sinai and the Eastern Desert mountains, while the Dorcas gazelle has a broader distribution across Sinai, the Eastern Desert, and parts of the Western Desert. While both species are expected to lose parts of their current range, they are also projected to expand into new areas. For the Nubian ibex, suitable habitat is expected to remain largely stable, with a projected increase of approximately 23.9 % by 2050 and 24.5 % by 2070. Concurrently, the species is projected to lose about 10.2 % by 2050 and 10.5 % by 2070. The Dorcas gazelle is projected to gain a substantial amount of new habitat—about 27.1 % by 2050 and 27.9 % by 2070. However, this increase is balanced by an anticipated loss of approximately 25.6 % by 2050 and 25.7 % by 2070. The results showed that protected areas in Egypt play a vital role in preserving these species, as indicated by the high coverage rate. They currently cover over 56% of the Nubian ibex’s potential distribution, which is projected to increase to 60 % by 2050 and 59 % by 2070. For the Dorcas gazelle, coverage is currently 34 %, but is projected to decline to 31 % by 2050 and 30 % by 2070. Based on these findings, effective management of protected areas, including continuous monitoring, evaluation, and adaptive boundary adjustments, is crucial for conservation. This is especially important in the Red Sea Governorate, and should include creating new protected areas with stakeholder involvement. We recommend investing in long-term field surveys and building robust databases to understand future changes in species’ habitats, ecological conditions, and threats. This will help develop strong in-situ and ex-situ conservation strategies for protected areas.</div></div>\",\"PeriodicalId\":54898,\"journal\":{\"name\":\"Journal for Nature Conservation\",\"volume\":\"89 \",\"pages\":\"Article 127102\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2025-09-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal for Nature Conservation\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1617138125002791\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"BIODIVERSITY CONSERVATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal for Nature Conservation","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1617138125002791","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIODIVERSITY CONSERVATION","Score":null,"Total":0}
Modeling climate-driven habitat suitability of vulnerable ungulates in Egypt’s protected areas
Understanding how species respond to climate change is crucial for effective conservation. This knowledge is essential for developing effective adaptive strategies, as climate-induced shifts in species distributions make protected areas a vital tool for future conservation planning. Protected areas may become ineffective if they remain within their current geographic boundaries without considering climate change in shaping critical climatic refuges for these species. Therefore, in this study, we used Species Distribution Models (SDMs) as a tool to analyze the impact of climate change on two vulnerable Egyptian ungulates: the Nubian ibex (Capra nubiana) and the dorcas gazelle (Gazella dorcas). We mapped their habitat suitability under current conditions and future “middle path” scenarios for the years 2050 and 2070. Our findings indicate that the Nubian ibex’s current habitats are concentrated in South Sinai and the Eastern Desert mountains, while the Dorcas gazelle has a broader distribution across Sinai, the Eastern Desert, and parts of the Western Desert. While both species are expected to lose parts of their current range, they are also projected to expand into new areas. For the Nubian ibex, suitable habitat is expected to remain largely stable, with a projected increase of approximately 23.9 % by 2050 and 24.5 % by 2070. Concurrently, the species is projected to lose about 10.2 % by 2050 and 10.5 % by 2070. The Dorcas gazelle is projected to gain a substantial amount of new habitat—about 27.1 % by 2050 and 27.9 % by 2070. However, this increase is balanced by an anticipated loss of approximately 25.6 % by 2050 and 25.7 % by 2070. The results showed that protected areas in Egypt play a vital role in preserving these species, as indicated by the high coverage rate. They currently cover over 56% of the Nubian ibex’s potential distribution, which is projected to increase to 60 % by 2050 and 59 % by 2070. For the Dorcas gazelle, coverage is currently 34 %, but is projected to decline to 31 % by 2050 and 30 % by 2070. Based on these findings, effective management of protected areas, including continuous monitoring, evaluation, and adaptive boundary adjustments, is crucial for conservation. This is especially important in the Red Sea Governorate, and should include creating new protected areas with stakeholder involvement. We recommend investing in long-term field surveys and building robust databases to understand future changes in species’ habitats, ecological conditions, and threats. This will help develop strong in-situ and ex-situ conservation strategies for protected areas.
期刊介绍:
The Journal for Nature Conservation addresses concepts, methods and techniques for nature conservation. This international and interdisciplinary journal encourages collaboration between scientists and practitioners, including the integration of biodiversity issues with social and economic concepts. Therefore, conceptual, technical and methodological papers, as well as reviews, research papers, and short communications are welcomed from a wide range of disciplines, including theoretical ecology, landscape ecology, restoration ecology, ecological modelling, and others, provided that there is a clear connection and immediate relevance to nature conservation.
Manuscripts without any immediate conservation context, such as inventories, distribution modelling, genetic studies, animal behaviour, plant physiology, will not be considered for this journal; though such data may be useful for conservationists and managers in the future, this is outside of the current scope of the journal.