{"title":"入侵的林地和入侵的狗塑造了一个中肉食性行会的结构。","authors":"Chetan Misher, Karani Singh Bithoo, Abi T Vanak","doi":"10.1007/s10530-025-03659-5","DOIUrl":null,"url":null,"abstract":"<p><p>Whilst the impacts of individual invasive species are relatively well studied, the combined effects of both plant and animal invasive species on multispecies assemblages are poorly understood. We studied the impact of two invasive species-the mesquite tree, <i>Neltuma juliflora,</i> and free-ranging dog, <i>Canis familiaris,</i> on a guild of native mesocarnivores in the human-dominated grasslands of the Thar desert. We found that the mesquite had varying effects on the mesocarnivore guild, benefiting generalist species such as the golden jackal <i>Canis aureus</i> and jungle cat <i>Felis chaus</i>, while negatively affecting open habitat specialist species such as Indian desert fox <i>Vulpes v. pusilla</i>, Indian fox <i>Vulpes bengalensis</i>, and desert cat <i>Felis lybica ornata</i>. All mesocarnivores strongly avoided dogs along the spatial or temporal niche axis, likely to evade interference competition. The high prevalence of dogs in these landscapes could lead to the competitive exclusion of smaller native species, such as the Indian fox, resulting in a local decline in their population. Our study reveals significant impacts of both plant and animal invasive species on native mesocarnivores, altering their distribution and activity patterns, with potential consequences for long-term population persistence. We suggest control of mesquite in areas prioritised for conservation of open habitat specialists such as desert fox, Indian fox, and desert cat, and removal or restriction on the movement of dogs in sensitive wildlife habitats.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s10530-025-03659-5.</p>","PeriodicalId":9202,"journal":{"name":"Biological Invasions","volume":"27 9","pages":"205"},"PeriodicalIF":2.6000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12413330/pdf/","citationCount":"0","resultStr":"{\"title\":\"Invasive woodlands and intruding dogs shape the structure of a mesocarnivore guild.\",\"authors\":\"Chetan Misher, Karani Singh Bithoo, Abi T Vanak\",\"doi\":\"10.1007/s10530-025-03659-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Whilst the impacts of individual invasive species are relatively well studied, the combined effects of both plant and animal invasive species on multispecies assemblages are poorly understood. 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引用次数: 0
摘要
虽然单个入侵物种的影响研究相对较好,但植物和动物入侵物种对多物种组合的综合影响却知之甚少。我们研究了两种入侵物种——豆科树(Neltuma juliflora)和自由放养的狗(Canis familiaris)——对塔尔沙漠人类主导的草原上一群本地中食性动物的影响。研究发现,豆科植物对中食肉动物群落有不同的影响,对金豺和丛林猫等多栖物种有利,而对开放生境的特殊物种如印度沙漠狐Vulpes v. pusilla、印度狐Vulpes bengalensis和沙漠猫Felis lybica ornata有不利影响。所有中食肉动物都沿着空间或时间生态位轴强烈避开狗,可能是为了逃避干扰竞争。狗在这些地区的高流行率可能导致较小的本地物种(如印度狐)被竞争性排斥,导致当地种群数量下降。我们的研究揭示了植物和动物入侵物种对本地中食性动物的显著影响,改变了它们的分布和活动模式,并可能对种群的长期持久性产生潜在影响。我们建议在沙漠狐、印度狐和沙漠猫等开放栖息地专家优先保护的地区控制豆科植物,并在敏感的野生动物栖息地清除或限制狗的活动。补充信息:在线版本包含补充资料,可在10.1007/s10530-025-03659-5获得。
Invasive woodlands and intruding dogs shape the structure of a mesocarnivore guild.
Whilst the impacts of individual invasive species are relatively well studied, the combined effects of both plant and animal invasive species on multispecies assemblages are poorly understood. We studied the impact of two invasive species-the mesquite tree, Neltuma juliflora, and free-ranging dog, Canis familiaris, on a guild of native mesocarnivores in the human-dominated grasslands of the Thar desert. We found that the mesquite had varying effects on the mesocarnivore guild, benefiting generalist species such as the golden jackal Canis aureus and jungle cat Felis chaus, while negatively affecting open habitat specialist species such as Indian desert fox Vulpes v. pusilla, Indian fox Vulpes bengalensis, and desert cat Felis lybica ornata. All mesocarnivores strongly avoided dogs along the spatial or temporal niche axis, likely to evade interference competition. The high prevalence of dogs in these landscapes could lead to the competitive exclusion of smaller native species, such as the Indian fox, resulting in a local decline in their population. Our study reveals significant impacts of both plant and animal invasive species on native mesocarnivores, altering their distribution and activity patterns, with potential consequences for long-term population persistence. We suggest control of mesquite in areas prioritised for conservation of open habitat specialists such as desert fox, Indian fox, and desert cat, and removal or restriction on the movement of dogs in sensitive wildlife habitats.
Supplementary information: The online version contains supplementary material available at 10.1007/s10530-025-03659-5.
期刊介绍:
Biological Invasions publishes research and synthesis papers on patterns and processes of biological invasions in terrestrial, freshwater, and marine (including brackish) ecosystems. Also of interest are scholarly papers on management and policy issues as they relate to conservation programs and the global amelioration or control of invasions. The journal will consider proposals for special issues resulting from conferences or workshops on invasions.There are no page charges to publish in this journal.