With escalating anthropogenic alteration of landscapes worldwide, managed forests are increasingly important as providers of ecosystem services and wildlife habitat. Therefore, it is crucial to maintain a balance between producing forest products and biodiversity conservation. Several studies have reported negative effects of forest management on terrestrial plethodontid salamanders, but fewer have focused on stream‐dwelling species or evaluated mechanisms for shifts in their abundance (e.g., mortality vs. movement). We used a before–after–control–impact design to examine the effects of clear‐cut harvesting on a semi‐aquatic stream‐breeding salamander endemic to the Ouachita Mountains, Desmognathus brimleyorum. We conducted a three‐year capture–mark–recapture (CMR) study at three streams within a managed pine (Pinus spp.) landscape in west‐central Arkansas, USA. Loblolly pine (Pinus taeda) stands surrounding two of the streams were clear‐cut (leaving a 14–21 m wide forested buffer on each side of the stream) midway through the study; the third stream served as a control site and remained unharvested. We estimated apparent survival using open CMR models and compared salamander movement over time and between harvested and control streams. Overall, our models revealed seasonal and temporal variation in salamander survival and abundance, but little evidence for strong immediate effects of timber harvesting on post‐metamorphic salamanders within two years postharvest. However, there was increased salamander movement at sites where forest harvest occurred. Our results suggest that streamside buffers of at least 14–28 m on either side of a stream are effective for minimizing immediate effects of forestry activities on juvenile and adult stream‐dwelling salamanders, when timber harvest occurs in the winter months. These results will inform management decisions aimed at conserving biodiversity and ecosystem integrity in managed forest landscapes while also filling a critical gap in the knowledge of stream salamander demographic parameters.

中文翻译：

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木材采伐对人工林景观中stream的存活和移动的影响

随着世界范围内人为景观的不断加剧，作为生态系统服务和野生动植物栖息地的提供者，人工林变得越来越重要。因此，至关重要的是要在林产品生产和生物多样性保护之间保持平衡。几项研究报告了森林管理对陆生食齿动物sal的负面影响，但鲜有研究集中于溪流栖居物种或评估了其丰富度变化的机制（例如，死亡率与活动度之间的关系）。我们使用了前后对照的设计，研究了明晰的采伐对乌斯奇特山脉（Desmognathus brimleyorum）特有的半水生河stream繁殖的影响。我们在美国阿肯色州中西部的管理松树（Pinus spp。）景观内的三个溪流处进行了为期三年的捕获－标记－捕获（CMR）研究。火炬松（taeda松）在研究过程中途，对两条溪流周围的林分进行了砍伐（在溪流的每一侧留出14-21 m宽的森林缓冲区）；第三溪流作为控制点，没有被收割。我们使用开放的CMR模型估算了明显的存活率，并比较了sal随时间流逝以及收获流和控制流之间的sal运动。总体而言，我们的模型揭示了sal生存和丰度的季节性和时间变化，但几乎没有证据表明采伐后两年内木材采伐对后变态sal具有很强的即时影响。但是，发生森林砍伐的地点sal的活动增加了。我们的结果表明，当冬季采伐木材时，在溪流两侧至少要有14-28 m的溪流缓冲带可以有效地减少林业活动对少年和成年溪流sal的直接影响。这些结果将为旨在保护受管理森林景观中的生物多样性和生态系统完整性的管理决策提供依据，同时也填补了sal流人口统计学参数知识的一个重大空白。