Wilson, R. R., and G. M. Durner. 2020. Seismic survey design and effects on maternal polar bear dens. Journal of Wildlife Management 84:201–212.

Since the publication of this manuscript, readers have noted 2 errors in our analysis. Here, we describe the errors and the changes to the supplemental code that will remedy them. The changes do not affect either the resulting expected number of maternal polar bear dens in the 1002 Area (20 dens) or the relative effects of the scenarios explored in the original manuscript.

The first error is that we inadvertently stated that the forward looking infrared (FLIR) survey simulations only represented a single FLIR survey. In reality, the analysis assumed 2 independent FLIR surveys occurred before simulated seismic activity occurred. Thus, when we reference a single FLIR survey in the text, this represents 2 FLIR surveys prior to seismic activity in the simulations. To evaluate the results for a single FLIR survey, readers can simply modify line 41 of the R code (file jwmg21800‐sup‐0006‐missed.dens.funcAnalysis.R in the Supporting Information) to read p2 = 0 and re‐run the analysis.

The second error relates to our calculation of the expected number of dens in the 1002 Area. In Appendix A of the original manuscript, we calculated the expected number of maternal polar bear dens based on a variety of parameters published in other studies or derived from data in published studies. Upon publication of this article, we were informed by a reader that we misinterpreted the meaning of the female breeding probability parameters (i.e., Pbreed1 and Pbreed0) obtained from Regehr et al. (2010). Upon further review of Regehr et al. (2010), we agree that our interpretation of these parameters was incorrect. In our calculation, we interpreted the parameters to apply to all adult females (i.e., an overall probability of an adult female breeding or re‐breeding after litter loss). These parameters, however, do not apply to all adult females but only to specific life‐history stages (i.e., solitary adult females, or adult females that lost a litter of cubs‐of‐the year or yearlings in a given year). We also noted that breeding probabilities in Regehr et al. (2010) represented the probability of an adult female breeding successfully and having ≥1 cub survive until the annual spring survey. Given that females may breed and den but lose their litter prior to the subsequent survey (Rode et al. 2018), the breeding probabilities in Regehr et al. (2010) are likely to underestimate the number of females that denned, the parameter we were principally interested in deriving. Because of this issue, we took a different approach in this erratum for calculating the expected number of dens in the 1002 Area that is not sensitive to the above problems. We provide an updated calculation that does not rely on parameters associated with breeding probability but requires additional data on the proportion of adult females with cubs‐of‐the‐year (coy) in spring (Table A1). This approach maintains the assumption that captured individuals comprise a representative sample of the population. Unless noted, sources for parameters are the same as detailed in the original manuscript.

威尔逊（RR）和通用汽车（GM Durner）。2020年。地震勘测设计及其对孕妇北极熊巢穴的影响。野生动物管理杂志84：201–212。

自从该手稿出版以来，读者注意到我们的分析中有2个错误。在这里，我们描述了错误以及对补充代码的纠正措施。这些变化不会影响最终在1002区域产妇北极熊的预期数量（20窝），也不会影响原始手稿中探讨的情景的相对影响。

第一个错误是我们无意中指出前瞻性红外（FLIR）调查模拟仅代表单个FLIR调查。实际上，该分析假设在进行模拟地震活动之前进行了2次独立的FLIR调查。因此，当我们在文中引用单个FLIR测量时，这表示模拟中地震活动之前的2个FLIR测量。要评估单个FLIR调查的结果，读者只需修改R代码的第41行（支持信息中的文件jwmg21800-sup-0006-missed.dens.funcAnalysis.R）以读取p2 = 0并重新运行分析。

第二个错误与我们对1002区域中预期的窝点数量的计算有关。在原始手稿的附录A中，我们根据其他研究发表的各种参数或从发表的研究数据中得出的各种参数，计算了母体北极熊密度的预期数量。在本文发表后，读者得知我们误解了从Regehr等人获得的雌性繁殖概率参数（即Pbreed1和Pbreed0）的含义。（2010）。在进一步审查雷格尔等。（2010年），我们同意我们对这些参数的解释不正确。在我们的计算中，我们解释了适用于所有成年雌性的参数（即，凋落物消失后成年雌性繁殖或再繁殖的总体概率）。但是，这些参数并不适用于所有成年雌性，而仅适用于特定的生活史阶段（即，单身成年雌性或在一年中失去一窝幼崽或一岁幼崽的成年雌性）。我们还注意到Regehr等人的繁殖概率。（2010）代表了成年雌性成功繁殖并有≥1只幼崽存活的概率，直到年度春季调查。鉴于雌性可能繁殖和繁殖，但在随后的调查之前会丢掉它们的窝（Rode等人 2018），Regehr等人的繁殖概率。（2010年）可能低估了被拒绝的女性人数，这是我们主要希望得出的参数。由于这个问题，我们在此勘误表中采用了另一种方法来计算对上述问题不敏感的1002区域中预期的窝点数量。我们提供了一个更新的计算方法，该计算方法不依赖于与育种概率相关的参数，但需要有关春季有幼崽（y）的成年雌性比例的更多数据（表A1）。这种方法维持这样一个假设，即被捕获的个体构成了人口的代表性样本。除非另有说明，否则参数的来源与原始手稿中详述的相同。