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Plant diversity and structure describe the presence of a new, threatened Australian marsupial within its highly restricted, post-fire habitat

机译：植物的多样性和结构描述了一个新的，受威胁的澳大利亚有袋动物在其受严格限制的火后生境中的存在

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Management of critical habitat for threatened species with small ranges requires location-specific, fine-scale survey data. The silver-headed antechinus (Antechinus argentus) is known from only two isolated, fire-prone locations. At least one of these populations, at Kroombit Tops National Park in central-eastern Queensland, Australia, possesses a very small range. Here, we present detailed vegetation species diversity and structure data from three sites comprising the known habitat of A. argentus at Kroombit Tops and relate it to capture data obtained over two years. We found differences in both vegetation and capture data between burnt and unburnt habitat. Leaf litter and grasstrees (Xanthorrhoea johnsonii) were the strongest vegetative predictors for A. argentus capture. The species declined considerably over the two years of the trapping study, and we raise concern for its survival at Kroombit Tops. We suggest that future work should focus on structural vegetative variables (specifically, the diameter and leaf density of grasstree crowns) and relate them to A. argentus occurrence. We also recommend a survey of invertebrate diversity in grasstrees and leaf litter with a comparison to A. argentus prey. The data presented here illustrates how critical detailed monitoring is for planning habitat management and fire regimes, and highlights the utility of a high-resolution approach to habitat mapping. While a traditional approach to fire management contends that pyrodiversity encourages biodiversity, the present study demonstrates that some species prefer long-unburnt habitat. Additionally, in predicting the distribution of rare species like A. argentus, data quality (i.e., spatial resolution) may prevail over data quantity (i.e., number of data).
机译：对小范围受威胁物种的关键栖息地进行管理需要特定地点的精细调查数据。仅有两个孤立的易发火地点，才知道银头的前tech（Antechinus argentus）。在澳大利亚昆士兰州中东部的Kroombit Tops国家公园中，至少有一个种群的分布范围非常小。在这里，我们介绍了来自三个地点的详细植被物种多样性和结构数据，这些地点包括Kroombit Tops的已知A. argentus栖息地，并将其与两年来获取的数据相关联。我们发现烧毁和未烧毁栖息地之间的植被和捕获数据都有差异。叶凋落物和草树（Xanthorrhoea johnsonii）是阿根廷曲霉捕获的最强营养预测因子。在诱捕研究的两年中，该物种大量减少，我们对其在Kroombit Tops的生存感到担忧。我们建议，未来的工作应集中在结构性植物变量（特别是草冠的直径和叶片密度）上，并将其与阿根廷曲霉的发生联系起来。我们还建议对草木和枯枝落叶中的无脊椎动物多样性进行调查，并与阿根廷曲霉猎物进行比较。此处提供的数据说明了对计划生境管理和火灾状况进行详细监控的重要性，并强调了高分辨率方法对生境制图的实用性。传统的消防管理方法认为，生物多样性会促进生物多样性，但本研究表明，某些物种更喜欢长期未燃烧的栖息地。另外，在预测诸如阿根廷曲霉的稀有物种的分布时，数据质量（即空间分辨率）可能胜于数据量（即数据数量）。

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