Collection of data on aboveground invertebrates in the Jena Experiment (time series since 2002)

This collection contains measurements of abundance and diversity of different groups of aboveground invertebrates sampled on the plots of the different sub-experiments at the field site of a large grassland biodiversity experiment (the Jena Experiment; see further details below). In the main experiment, 82 grassland plots of 20 x 20 m were established from a pool of 60 species belonging to four functional groups (grasses, legumes, tall and small herbs). In May 2002, varying numbers of plant species from this species pool were sown into the plots to create a gradient of plant species richness (1, 2, 4, 8, 16 and 60 species) and functional richness (1, 2, 3, 4 functional groups). Plots were maintained by bi-annual weeding and mowing. The following series of datasets are contained in this collection: 1. Measurements of ant abundance (number of individuals attracted to baits) and ant occurrence (binary data) in the Main Experiment in 2006 and 2013. Ants where sampled using two types of baited traps receiving ~10g of Tuna or ~10g of honey/Sucrose. After 30min the occurrence (presence = 1 / absence = 0) and abundance (number) of ants at the two types of baits was recorded and pooled per plot.本数据集收录了大型草原生物多样性实验（耶拿实验，Jena Experiment，后续详见补充说明）野外样地内各子实验样地中采集的不同类群地上无脊椎动物的丰度与多样性测定数据。 主实验共设置82块20×20米的草原样地，所用植物种质库包含60个物种，分属4个功能群：禾草类、豆科类、高大草本与小型草本。2002年5月，研究人员从该种质库中选取不同数量的植物物种播种至各块样地，以构建植物物种丰富度（1、2、4、8、16及60种）与功能群丰富度（1、2、3、4个功能群）的梯度体系。所有样地均通过每年两次除草与刈割进行管护。 本数据集包含以下系列子数据集：1. 2006年与2013年主实验中蚂蚁丰度（被诱饵吸引的个体数量）与蚂蚁出现率（二进制数据）的测定结果。研究人员采用两种诱饵诱集陷阱采集蚂蚁样本，陷阱分别投放约10克金枪鱼肉诱饵与约10克蜂蜜/蔗糖诱饵。30分钟后，记录两种诱饵处的蚂蚁出现情况（存在记为1，缺失记为0）与丰度（个体数量），并按样地合并数据。