R. E. Piper

Microbial activity discovered in previously ice‐entombed Arctic ecosystems

Jeffrey M. Welker, Greg H. R. Henry, Jace T. Fahnestock, 2002 .

Alpine Grassland CO2 Exchange and Nitrogen Cycling: Grazing History Effects, Medicine Bow Range, Wyoming, U.S.A

J. Welker, C. Bilbrough, J. Fahnestock, 2004 .