Wildlife camera trap photographs from the Chornobyl Exclusion Zone, Ukraine (November 2020 - March 2021) following extensive wildfires

The data presented here comprise a catalogue of 11633 trap camera images obtained during the period November 2020 to March 2021; this period is described within the dataset as setup 2. Following the explosion at the Chernobyl nuclear power plant in April 1986 an approximately 5000 km2 exclusion zone surrounding the plant was created; people and farm animals were subsequently evacuated from the area. In April 2020 there were severe wildfires within the Ukrainian part of the exclusion zone (2600 km2) where approximately 870 km2 was burnt. The NERC funded CHAR project conducted a study which involved placing motion activated digital trap cameras at three sites (each covering an area of 80 km2) within the Ukrainian exclusion zone from June 2020 - August 2021 to assess large mammal activity following the fire. Thirteen cameras were randomly located at each site; all camera deployment locations had been used in a previous study 2014-2015 (https://www.ceh.ac.uk/our-science/projects/chernobyl-images). All the images obtained during November 2020-March 2021 (setup 2) are included as part of the dataset with the exception of those containing people, vehicles or members of the CHAR research team setting up and servicing the cameras; these images (n= 692) have been catalogued but the images are not included in the dataset to protect privacy. Information on camera deployment periods, site characteristics and descriptions of each camera location (e.g. geographic coordinates, estimates of ambient dose rate, description of animal trails or tracks and the extent of fire damage in vicinity of where the camera is mounted) have also been included as part of the dataset. Staff from the Chornobyl Center for Nuclear Safety deployed, maintained and downloaded images and associated metadata from the trap cameras in March 2021. Using the images and associated metadata, the image catalogue was populated by Chornobyl Center staff with: species identified in image, number of animals visible in image, the number of triggering events (cumulative by camera) and any relevant notes; the image catalogue (MSExcel) and trap camera images (.jpeg) were subsequently supplied to UKCEH. Site descriptions and camera information were provided by Chornobyl Center staff and supplied to UKCEH by staff as MSExcel files; the same person from the Chornobyl Center recorded all descriptive parameters. The information provided includes: site field notes, habitat descriptions, camera location (latitude and longitude, WGS84), estimates of ambient dose rate (µSv h-1), camera deployment dates and the number of days each camera was deployed. The data and images were quality checked by a member of UKCEH staff and any queries were investigated and amended where necessary. This dataset contains data related to setup 2; for data related to setup 1 see: https://doi.org/10.5285/9bd7754d-ea87-4b35-bec1-f39d5cc76db6本数据集收录了2020年11月至2021年3月期间采集的11633台运动触发式诱捕相机（trap camera）影像，该时段在数据集中被标记为“设置2（setup 2）”。1986年4月切尔诺贝利核电厂爆炸事故发生后，电厂周边被划定为面积约5000平方公里的隔离区，区域内人员与家畜随后均被疏散。2020年4月，隔离区乌克兰境内区域发生严重野火，过火总面积达2600平方公里，其中约870平方公里被焚毁。由英国自然环境研究委员会（Natural Environment Research Council, NERC）资助的CHAR项目开展了一项研究，于2020年6月至2021年8月期间，在乌克兰隔离区内布设3个研究样地（单个样地面积为80平方公里），并在每个样地内随机布设13台运动触发式数字诱捕相机，以评估野火过后区域内大型哺乳动物的活动情况。所有相机布设点位均沿用2014-2015年一项前期研究的点位（https://www.ceh.ac.uk/our-science/projects/chernobyl-images）。本数据集收录了2020年11月至2021年3月（即设置2阶段）采集的全部相机影像，但包含人员、车辆或CHAR研究团队成员布设、维护相机的影像除外；此类影像共计692张，已完成编目，但因隐私保护要求未纳入本数据集。数据集同时包含相机布设周期、样地特征及各相机点位的详细描述信息，具体包括地理坐标、环境剂量率估算值、动物步道痕迹描述以及相机安装位置周边区域的火灾损毁情况等。2021年3月，切尔诺贝利核安全中心（Chornobyl Center for Nuclear Safety）工作人员完成了诱捕相机的布设、维护工作，并下载了相机采集的影像及相关元数据（metadata）。依托采集到的影像与元数据，该中心工作人员完成了影像编目工作，标注内容涵盖影像中识别出的物种、可见动物数量、触发事件累计总数（按单台相机统计）及相关备注信息；随后，该影像编目表（Microsoft Excel（MSExcel）格式）与诱捕相机影像（JPEG格式）均提交至英国生态与水文中心（UK Centre for Ecology & Hydrology, UKCEH）。样地描述与相机相关信息由切尔诺贝利核安全中心工作人员提供，并以Microsoft Excel文件形式提交至英国生态与水文中心，所有描述性参数均由该中心同一名工作人员完成记录。所提供的信息包括：样地野外记录、生境描述、相机点位坐标（WGS84坐标系下的纬度与经度）、环境剂量率估算值（单位：微希沃特每小时，µSv·h⁻¹）、相机布设日期及单台相机的有效布设天数。英国生态与水文中心工作人员对本数据集的数据与影像开展了质量核查，对所有疑问项进行了核实与必要修正。本数据集仅包含设置2阶段的相关数据；如需获取设置1阶段的数据，请访问：https://doi.org/10.5285/9bd7754d-ea87-4b35-bec1-f39d5cc76db6