Stream acidification and base cation losses with grassland afforestation

@article{Farley2008StreamAA,
  title={Stream acidification and base cation losses with grassland afforestation},
  author={Kathleen A. Farley and Gervasio Pi{\~n}eiro and Sheila M Palmer and Esteban G. Jobb{\'a}gy and Robert B. Jackson},
  journal={Water Resources Research},
  year={2008},
  volume={44}
}
Afforestation of natural grasslands with fast‐growing pine and eucalyptus species is increasing globally, but little is known about its effect on ecosystems and watersheds and, ultimately, the quality of water resources. To investigate the biogeochemical and hydrological consequences of this land use change, we sampled stream water in paired watersheds in Uruguay and Argentina. In watersheds planted with pine, we found no change in stream pH following afforestation, while in watersheds planted… 

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Afforestation Alters the Composition of Functional Genes in Soil and Biogeochemical Processes in South American Grasslands

TLDR
Examining paired native grasslands and adjacent Eucalyptus plantations in Uruguay found afforestation altered the abundance of many microbial functional genes, corresponding with changes in soil biogeochemistry, in part through altered abundance of overall functional gene types rather than simply through changes in specific taxa.
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