As part of a study to characterize the habitat of Canada’s only known population of Hine’s emerald dragonfly (HED), a species listed as endangered since 2011, groundwater was collected and analyzed from the eastern Minesing Wetlands near Barrie, Ontario. The water quality analyses included general chemistry parameters (major anions and cations, nutrients) as well as specialized analyses (water and nitrate isotope ratios, artificial sweeteners, sulfamate, select herbicides). Groundwater samples were collected in the fall of 2010, 2013, 2014 and in the spring and fall of 2015 to 2017 from a network of groundwater wells and piezometers in the wetland and adjacent uplands. Samples from groundwater seeps discharging along the eastern margin of the wetland were collected in May of 2016 and 2017. Information on the methods used and results from this long-term study can be found in the following publications:
Pest Management Science 72: 1862-1872. (2016) https://doi.org/10.1002/ps.4218
Nottawasaga Valley Conservation Authority, Project report number: RF_31_16_NVCA (2018) https://open-science.canada.ca/handle/123456789/3527
Science of the Total Environment 695: 133734. (2019) https://doi.org/10.1016/j.scitotenv.2019.133734
Wetlands Ecology and Management 31: 309-327. (2023) https://doi.org10.1007/s11273-023-09918-3