BETA-FOR_SP9_Bats_2022/2023

one-time sampling ################ This dataset contains records of bat (Chiroptera) activity collected using bat recorders (batcorders) across 234 BETA-FOR patches. One batcorder was installed per patch within a maximum radius of 15 meters from the patch center, where it was possible to hang the recorder on a tree at a height of 1.50–1.70 m. The recorder settings were configured as follows: quality set to 20, post-trigger duration of 400 ms, threshold level at −27 dB, and critical call frequency at 16 kHz. The recorders were active for one night per sampling session, starting one hour before sunset and running until one hour after sunrise. Sampling was primarily conducted in June and July, with additional nights in May, June, and August to compensate for poor weather or sampling conditions. Sampling was carried out in 2022 for 90 patches in the University Forest and 90 patches in the Bavarian Forest. In 2023, the 54 patches located in Saarland, Hunsrück, and Lübeck were sampled. To analyze bat call sequences and measure their acoustic properties, we used bcAdmin4 (Version 1.2.6, ecoObs GmbH). Automated identification of bat calls was then performed using batIdent (Version 1.5, ecoObs GmbH). The dataset includes all detected calls, even those not always identified to the species level. The corresponding minute counts refer to the number of minutes within a recording session during which at least one bat call was detected. ################ We greatly acknowledge the help of: Katharina Kraus, Mareike Kortmann, Adèle Kieffer, Gisela Bach, Jorge Torres, Soumen Mallick, Jürgen Thein, Christine Franz, Interns of the Bavarian Forest Nationalpark and all other assistants单次采样 本数据集包含通过蝙蝠记录仪（batcorders）在234个BETA-FOR样地中采集的蝙蝠（翼手目Chiroptera）活动录音记录。 每个样地均布设一台蝙蝠记录仪，安装位置距样地中心最大半径不超过15米，且可将记录仪悬挂于高度1.50至1.70米的树干上。记录仪参数配置如下：录音质量设为20，触发后时长为400毫秒，阈值电平为-27分贝，关键呼叫频率为16千赫。 每次采样期间，记录仪将整夜运行，启动时间为日落前1小时，终止时间为日出后1小时。采样主要集中在6月和7月，同时在5月、6月及8月增设了部分夜间采样场次，以弥补恶劣天气或不良采样条件导致的样本缺失。 2022年，我们分别在大学森林（University Forest）与巴伐利亚森林（Bavarian Forest）各完成90个样地的采样；2023年则对位于萨尔州（Saarland）、洪斯吕克（Hunsrück）和吕贝克（Lübeck）的54个样地开展了采样。 为分析蝙蝠呼叫序列并测定其声学特性，我们使用了bcAdmin4（版本1.2.6，ecoObs GmbH公司）；随后借助batIdent（版本1.5，ecoObs GmbH公司）完成了蝙蝠呼叫的自动识别。 本数据集收录所有被检测到的蝙蝠呼叫，即便部分呼叫无法被鉴定至物种水平。对应的分钟计数指单次录音时段内，至少检测到一次蝙蝠呼叫的分钟总数。 我们衷心感谢以下人员的协助：凯瑟琳娜·克劳斯（Katharina Kraus）、玛丽克·科特曼（Mareike Kortmann）、阿黛尔·基弗（Adèle Kieffer）、吉泽拉·巴赫（Gisela Bach）、豪尔赫·托雷斯（Jorge Torres）、苏门·马利克（Soumen Mallick）、于尔根·泰因（Jürgen Thein）、克里斯汀·弗朗茨（Christine Franz）、巴伐利亚森林国家公园实习生及所有其他协助人员。