Ecological Archives C006-077-A4
Jiangxiao Qiu and Monica G. Turner. 2015. Importance of landscape heterogeneity in sustaining hydrologic ecosystem services in an agricultural watershed. Ecosphere 6:229. http://dx.doi.org/10.1890/es15-00312.1
Appendix D. Spatial distribution of groundwater wells with nitrate measurements for 2006.
Fig. D1. Spatial distribution of 528 groundwater wells with nitrate measurements for 2006, obtained from Groundwater Retrieve Network and Wisconsin Department of Natural Resources.