Data from: Spatial and temporal patterns of bark beetle and defoliator outbreaks, and their interactions, in the Pacific Northwest

<b>Abstract</b><br/><p>The dynamics of many forest insects are changing in response to climate warming; however, patterns are not always consistent among or within taxa. Changes in outbreak dynamics for individual species have received much recent attention, but the potential for interactions among species has received less. We used historical aerial survey data (1960-2019) from conifer-dominated forests of Oregon, Washington, and British Columbia to quantify spatial dynamics of bark beetles, defoliators, and their interactions across local and regional scales, and to measure how these dynamics have changed through time. The historical aerial survey data are archived by the British Columbia Ministry of Forests & Canadian Forest Service, and the USDA Forest Service, as cited in the paper; these data contain a record of aerially detected forest biotic disturbance agents (e.g., insects and plant pathogens) that date to the 1940s. From this large dataset, we subset those biotic disturbance agents specific to our study region (Oregon and Washington, USA, and British Columbia, Canada), which are listed in Table 1 in Pane et al. 2026, between 1960 and 2019. The subset data used in our study is archived here. The subset dataset contains 2034477 rows and 7 columns. Each row lists (1) a unique number associated with each grid cell, (2 and 3) the geospatial locations, (4) the year the biotic disturbance agent was detected or (5) the one year lag in detection (specific to bark beetle damage), (6) the biotic disturbance agent detected, and (7) and the area of the aerially detected disturbance. More details are contained in the README file.</p>

<b>摘要</b><br/>&lt;p&gt;受气候变暖影响，多数森林昆虫的种群动态正发生改变，但不同昆虫类群乃至同类群内部的变化模式并非完全一致。当前学界对单一物种种群暴发动态的变化已有较多研究，但对物种间潜在互作关系的关注仍相对不足。本研究依托美国俄勒冈州、华盛顿州及加拿大不列颠哥伦比亚省针叶林主导区域的历史航空调查数据（1960年—2019年），定量解析了小蠹虫（bark beetles）、食叶昆虫（defoliators）及其种间互作在局域与区域尺度上的空间动态，并探究了这些动态随时间的演变趋势。如论文所述，该历史航空调查数据由不列颠哥伦比亚省林业部、加拿大森林服务局及美国农业部（USDA）森林服务局归档保存，其收录的航空探测森林生物干扰因子（biotic disturbance agents，含昆虫与植物病原菌）记录可追溯至20世纪40年代。本研究从该大型数据集中筛选出1960年至2019年间、针对本研究区域（美国俄勒冈州、华盛顿州及加拿大不列颠哥伦比亚省）的特定生物干扰因子，相关因子详见Pane等人2026年发表论文中的表1。本研究使用的子集数据集已在此处归档。该子集数据集共计2034477行、7列。每一行分别记录7项信息：(1) 每个栅格单元（grid cell）对应的唯一编号；(2)、(3) 地理空间坐标；(4) 生物干扰因子的探测年份，或（针对小蠹虫危害的特殊情况）(5) 滞后一年的探测年份；(6) 探测到的生物干扰因子类型；(7) 航空探测到的干扰区域面积。更多详细信息详见README文件。&lt;/p&gt;