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Funding Sources
This research has been supported by a grant from the U.S. Environmental Protection Agency’s Science to Achieve Results (STAR) program on Centers for Water Research on National Priorities Related to a Systems View of Nutrient Management. Although the research described in the article has been funded wholly or in part by the U.S. Environmental Protection Agency’s STAR program through grant 83556901, it has not been subjected to any EPA review and therefore does not necessarily reflect the views of the Agency, and no official endorsement should be inferred. This material is based upon work supported by the National Science Foundation under Grant Number 1243510. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.