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Is the presence of a threatened arboreal mammal in residential areas related to remnant habitats?
Austral Ecology ( IF 1.6 ) Pub Date : 2020-09-21 , DOI: 10.1111/aec.12953
Marie B. Busschots 1, 2 , Paul G. Close 1 , Bronte E. Van Helden 1 , Peter C. Speldewinde 1
Affiliation  

Remnant natural habitat is assumed critical for supporting threatened animals within urban landscapes because these species generally have specific habitat requirements and typically respond poorly to anthropogenic disturbances. However, evidence that demonstrates some threatened species can occur, persist and even prosper in highly modified areas with seemingly little dependence on remnant vegetation challenges the role remnant vegetation is perceived to play in sustaining threatened species in urban landscapes. In this study, we tested the assumption that the presence of a threatened species in modified areas of an urban environment was dependent on remnant vegetation using the Critically Endangered western ringtail possum (Pseudocheirus occidentalis) as a case study. We predicted that the presence of possums in highly modified habitats would be positively correlated with proximity to remnant vegetation. Using spotlight surveys of 195 transects to determine species occurrence on residential streets, we found that the presence of the western ringtail possum was not related to remnant vegetation within the immediate surrounds, nor the distance from remnant habitats (neither large nor small). Our results promote the suggestion that highly modified habitats in urban landscapes can contribute conservation outcomes and that their potential role in wildlife conservation warrants serious consideration.

中文翻译:

居住区中是否有濒临灭绝的树栖哺乳动物与残留的栖息地有关?

剩余的自然栖息地被认为对于在城市景观中支持濒临灭绝的动物至关重要,因为这些物种通常具有特定的栖息地要求,并且通常对人为干扰的反应较差。然而,证据表明某些濒危物种可以在高度改良的地区发生,持续存在甚至繁荣,而对残余植被的依赖性似乎很小,这挑战了残余植被在维持城市景观中受威胁物种中所扮演的角色。在这项研究中,我们测试了以下假设:使用极度濒危的西部环鼠负鼠(Pseudocheirus occidentalis),在城市环境的改良区中,濒临灭绝物种的存在取决于残留的植被。)作为案例研究。我们预测,高度改良的栖息地中负鼠的存在与与残留植被的接近程度成正相关。通过对195个样带的聚光灯调查来确定在居民区街道上发生的物种,我们发现西部环尾负鼠的存在与周围环境中的残余植被无关,与残余栖息地的距离(无论大小)都不相关。我们的结果提出了这样的建议,即城市景观中高度修饰的栖息地可以促进保护成果,并且它们在野生动植物保护中的潜在作用值得认真考虑。
更新日期:2020-09-21
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