Invasion of the coccinellid community associated with a tropical annual agroecosystem

To examine the potential effect of an invasive coccinellid (Harmonia axyridis) on the resident community of coccinellids, we sampled predators and prey associated with organic Brassica oleracea production on 6 farms during 2 years in the Distrito Federal, Brasil and conducted a food acceptability trial to estimate niche breadth and overlap among the coccinellids. The data are in two files. The first is a community sample data set, with columns describing the sample characteristics (year, farm, sample period) and the summed counts of all macroinvertebrates found on 30 plants at each sample period, farm and year. There are 120 samples and 36 populations of macroinvertebrates in the data set. The second data set is the acceptability of 4 aphid prey species to 3 stages of 4 species of coccinellids. There are 15 replicates of the 48 treatments. The data also include the biomass of the predators at the end of the experiment. Farms have been de-identified, and the data can be used by anyone wi..., Brassica oleracea production fields at six organic vegetable farms in the Distrito Federal, Brazil were examined during 2017 and 2018: 15°39'06\"S 48°06'33\"W; 15°39'00\"S 48°12'01\"W; 15°36'43\"S 48°04'43\"W; 15°33'54\"S 48°01'48\"W; 15°44'18\"S 47°39'13\"W; and 15°45'44\"S 47°38'29\"W. Data were collected under Brazilian authorization numbers SISBIO 36950 and IBAMA 02001.008598/2012-42. Crops were grown according to recommendations for organic production. Within each field, an area of about 200 m2 was designated as the sample area. Invertebrates were sampled at each farm every two weeks during the dry season (May to September, 10 sample dates total per year), because aphid populations, which are important pests of brassicas, are higher during the dry season. Each sample comprised a count of all invertebrates on 30 plants by visual inspection. All invertebrates were identified in the field to the lowest feasible taxonomic level based on pictorial keys and experts in the field. When aphids were spa..., All data files are csv files and the contents of each are described in the README.txt file.

为探究入侵性瓢虫（Harmonia axyridis，多异瓢虫）对本地瓢虫群落的潜在影响，我们于巴西联邦特区（Distrito Federal）的6家有机甘蓝（Brassica oleracea）种植农场开展了为期2年的采样调查，采集与该种植系统相关的捕食性与植食性节肢动物，并开展食物适口性试验以评估各类瓢虫的生态位宽度与重叠度。本数据集包含两个文件：第一个为群落采样数据集，其列信息涵盖采样特征（年份、农场、采样时段），以及各采样时段、农场与年份下，30株植株上发现的所有大型无脊椎动物的总计数。本数据集共包含120个采样样本与36个大型无脊椎动物类群。第二个数据集为4种蚜虫猎物对4种瓢虫的3个发育阶段的适口性数据，共设置48种处理，每种处理包含15次重复。该数据集同时收录实验结束时捕食者的生物量数据。所有农场均已完成匿名化处理，本数据可供任意研究者使用。2017年与2018年，我们对巴西联邦特区6家有机蔬菜农场的甘蓝种植田开展了调查，各农场坐标分别为：15°39'06"S 48°06'33"W；15°39'00"S 48°12'01"W；15°36'43"S 48°04'43"W；15°33'54"S 48°01'48"W；15°44'18"S 47°39'13"W；15°45'44"S 47°38'29"W。本研究的数据采集工作已获得巴西相关机构的许可，许可编号为SISBIO 36950与IBAMA 02001.008598/2012-42。试验作物严格遵循有机种植规范进行栽培。在每个种植田内，划定约200平方米的区域作为采样区。鉴于蚜虫作为十字花科作物的重要害虫，其种群数量在旱季（5月至9月）更高，因此我们于旱季每两周对各农场开展一次采样，每年共计10个采样日期。每次采样通过目视计数法统计30株植株上的所有无脊椎动物。所有无脊椎动物均依据图鉴与领域专家的指导，在野外鉴定至可行的最低分类学层级。当蚜虫[原文此处内容未完整]。所有数据文件均为CSV格式，各文件的详细说明请参见README.txt文件。