BETA-FOR_SP9_Predation_2022/2023

one-time sampling + rapid assessment 2023 ################ This dataset contains predation data on artificial caterpillars collected in 2022 and 2023. In 2022, sampling was conducted in 90 patches within the University Forest and 90 patches in the Bavarian Forest. In 2023, 54 patches located in Saarland, Hunsrück, and Lübeck were sampled, as well as on the rapid assessment sites. In each patch, 21 artificial caterpillars were installed following a standardized protocol. Seven trees were selected per patch, as close as possible to the patch center. In patches with forest gaps, trees from the first tree line were chosen. Selected trees had to have a branch with leaves at a height of approximately 1.70 m. Three caterpillars were placed on each tree, using non-toxic glue (PRITT Bastelkleber, (SKU/IDH)2463962) to attach them to the bark: one on the ground, one on the stem at a height of 0.5 to 1 m, and one on a branch at a height of 1.50 to 2 m. The caterpillars were exposed for one week at the end of June, when weather conditions were mostly dry and not too windy. After exposure, bite marks were analyzed in the lab using a custom bite guide developed by Murat Demirok, as well as existing references, including Low et al. (2014) and the Guide to Bite Marks by Tvardikova & Novotny (2012). Predator groups were recorded as present or absent (0/1) for each caterpillar. If multiple predators were identified, they were listed in separate columns for the same caterpillar. The artificial caterpillars were made from green, non-toxic plasticine (Plastilin-Knete Noris® 8421, STAEDTLER). They were shaped with a diameter of 5 mm and a length of 25 mm, with rounded edges, reaching a maximum length of approximately 30 mm. ################ We greatly acknowledge the help of: Jens Schlüter, Camilla Haider (BA), David Ritz (BA), Adèle Kieffer, Jorge Torres, Kim Zimmermann, Hans Bahr, Noelle Demuth, Jean-Léonard Stör, Interns of the Bavarian Forest Nationalpark and all other assistants一次性采样+快速评估 2023 本数据集收录了2022年与2023年采集的人工毛虫捕食相关数据。2022年，研究团队于大学林（University Forest）内的90个样地以及巴伐利亚森林（Bavarian Forest）的90个样地开展采样工作；2023年则对萨尔兰州（Saarland）、洪斯吕克（Hunsrück）与吕贝克（Lübeck）境内的54个样地，以及快速评估样地进行了采样。 每个样地内均按照标准化实验流程布设21只人工毛虫。每个样地选取7棵尽可能靠近样地中心的树木；若样地存在林隙，则选取第一道林线处的树木。所选树木需在约1.70米高度处带有带叶枝条。每棵树上布设3只人工毛虫，使用无毒胶水（PRITT Bastelkleber，SKU/IDH编号：2463962）固定于树皮上：1只置于地面，1只固定于树干0.5~1米高度处，剩余1只固定于1.50~2米高度的枝条上。 人工毛虫于6月末暴露放置一周，此时天气多为干燥且风力适中。暴露结束后，研究人员在实验室中借助穆拉特·德米罗克（Murat Demirok）开发的专用咬痕评估指南，结合Low等人（2014）以及Tvardikova与Novotny（2012）所著《咬痕指南》（Guide to Bite Marks）等现有参考文献对咬痕进行分析。针对每只人工毛虫，以存在（1）或不存在（0）记录捕食者类群；若同一只毛虫被鉴定出多种捕食者，则将其分列于对应列中。 人工毛虫由绿色无毒橡皮泥（Plastilin-Knete Noris® 8421，施德楼STAEDTLER）制成，成型后直径为5毫米，长度为25毫米，边缘做圆角处理，最大总长约30毫米。 衷心感谢以下人员的协助：延斯·施吕特（Jens Schlüter）、卡米拉·海德（Camilla Haider，BA）、大卫·里茨（David Ritz，BA）、阿黛尔·基弗（Adèle Kieffer）、豪尔赫·托雷斯（Jorge Torres）、金·齐默尔曼（Kim Zimmermann）、汉斯·巴尔（Hans Bahr）、诺埃勒·德穆特（Noelle Demuth）、让-莱奥纳尔·施托尔（Jean-Léonard Stör）、巴伐利亚森林国家公园实习生以及所有其他协助人员