Deforestation caused abrupt shift in Great Lakes nitrogen cycle

@article{Guiry2020DeforestationCA,
  title={Deforestation caused abrupt shift in Great Lakes nitrogen cycle},
  author={Eric J. Guiry and Michael Buckley and Trevor J. Orchard and Alicia L. Hawkins and Suzanne Julia Needs-Howarth and Erling Dokk Holm and Paul Szpak},
  journal={Limnology and Oceanography},
  year={2020},
  volume={65}
}
Despite the longstanding significance of North America's Great Lakes, little is known about their preindustrial ecology. Here, we report on when and how humans first became a main driver of Lake Ontario's nutrient dynamics. Nitrogen isotope analyses of archaeological fish show that, prior to the 1830s, Lake Ontario's nitrogen cycle and the trophic ecology of its top predators had remained stable for at least 800 yrs, despite Indigenous and historical European agricultural land management across… 

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