Mercury in emergent odonates and midges of the Prairie Pothole wetlands of North Dakota, USA

This data release is an extension of a previous data release (https://doi.org/10.5066/P971S7IV) that expands the collected data to include tissue mercury concentrations for adult aquatic insects emerging from wadable wetlands in cropland and grassland landscapes of the Prairie Pothole region (n = 15 wetlands in 2016). These data were collected at the same time as the other data (analyzed in 2016), but not released or analyzed in the previous manuscript and data release. Emergent odonate and diptera adults were collected with floating emergence traps or floating malaise traps, frozen, and analyzed for total mercury using standard methods. Samples were collected in late spring during the local bird breeding season. The wetlands in this study were on 3 USFWS Waterfowl Protection Areas and 2 private farms in Stutsman County, North Dakota, USA.

本数据集为既往发布数据集（https://doi.org/10.5066/P971S7IV）的扩展版本，新增了草原坑洼地区农田与草原景观中可涉水湿地羽化的成年水生昆虫组织汞浓度数据，该数据集涵盖2016年的15处湿地样本。该批数据与2016年完成分析的其余配套数据采集于同一时期，但并未在既往研究论文与数据发布版本中公开或开展相关分析。研究采用浮式羽化陷阱与浮式马氏陷阱（floating malaise traps）采集羽化的蜻蛉目（odonate）与双翅目（diptera）成虫样本，将样本冷冻保存后采用标准方法检测总汞含量。样本采集于当地鸟类繁殖季的晚春时段。本研究涉及的湿地分布于美国北达科他州斯塔茨曼县的3处美国鱼类及野生动物管理局（U.S. Fish and Wildlife Service, USFWS）水禽保护区与2处私人农场。