Context: Forest harvest practices have the potential to alter habitat available to forest fauna. One aspect of harvesting practice that has received little research attention is the effect of multiple rotations on available habitat, and its use by fauna.

Aims: We examined one component of habitat that is critical to many taxa, coarse woody debris (CWD). In forests of north-eastern New South Wales, Australia, we aimed to assess whether harvest (moderate intensity for saw-logs) frequency influences CWD levels, and whether fauna activity on CWD varies with harvest frequency and with CWD attributes.

Methods: Using habitat surveys and camera trapping, we compared CWD quantity and quality in unharvested sites with those that had been harvested once, twice and three times, and assessed fauna use of CWD.

Key results: We found significantly greater volume of non-hollow CWD, and of medium-sized pieces (15–30 cm diameter), in sites harvested three times versus unharvested sites. Camera trapping showed that the activity and composition of fauna were similar across these harvest treatments. Our results also found that a broad range of fauna used a variety of logs, including large and small logs in various states of decay.

Conclusions: Consistent with other Australian studies, our results suggested that there are no detectable impacts of harvesting on hollow or large CWD. Further studies using radio-tracking or similar methods are needed to more comprehensively assess how CWD is used by fauna.

Implications: CWD was used broadly by a range of species and should be targeted for retention under ecologically sustainable forest management practices to ensure that it continues to be present in harvested landscapes. This is particularly important in places where an intensification of practices is being considered.

背景：森林采伐方式有可能改变森林动物可利用的栖息地。很少受到研究关注的收获实践的一个方面是多次轮换对可利用的栖息地及其对动物的利用的影响。

目的：我们研究了栖息地的一个组成部分，它对许多分类单元至关重要，即粗木屑（CWD）。在澳大利亚新南威尔士州东北部的森林中，我们旨在评估采伐（锯木原木的中等强度）频率是否影响CWD水平，以及CWD上的动物活动是否随采伐频率和CWD属性而变化。

方法：通过栖息地调查和照相机捕获，我们比较了未收获地点的CWD数量和质量与已收获一次，两次和三次的CWD的数量和质量，并评估了CWD的动物利用情况。

关键结果：在未收获的地方，我们发现非空心CWD和中型块（直径15–30 cm）的体积明显增加了三倍。相机诱捕表明，在这些收割处理过程中，动物的活动和组成是相似的。我们的结果还发现，广泛的动物群使用了各种各样的原木，包括处于各种衰减状态的大大小小的原木。

结论：与其他澳大利亚研究一致，我们的结果表明，收获对空心或大型CWD没有可检测到的影响。为了更全面地评估动物如何使用CWD，需要使用无线电跟踪或类似方法进行进一步研究。

含义： CWD已被多种物种广泛使用，应根据生态可持续森林管理规范进行保留，以确保其在伐木中继续存在。在考虑加强实践的地方，这一点尤其重要。