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.

本数据集为既往数据集发布（https://doi.org/10.5066/P971S7IV）的扩展版本，新增了草原坑洼区域农田与草地景观中可涉水湿地羽化的水生昆虫成虫组织汞浓度数据（2016年共涉及15处湿地）。
本数据集与2016年分析的其他同期采集数据一同获取，但未在既往研究手稿与数据发布中公开或开展分析。
研究采用浮式羽化陷阱或浮式马氏陷阱采集羽化的蜻蛉目（odonate）与双翅目（diptera）成虫，经冷冻保存后，采用标准方法检测其总汞含量。
样本采集于当地鸟类繁殖期的晚春时节。
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。