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The Richard and Jane Pearl Professor in Environmental Studies
Environmental Studies Program


I am an environmental and forest ecosystem scientist.

My research and teaching have focused on:

  • Carbon cycling in forests
  • Trace metal and major element cycling in forests
  • Personal choices and their impact on energy and the environment
  • Air pollution effects on high-elevation forests in the Northeast USA
  • Introductory Environmental Science
  • Online Introductory Environmental Science (edX MOOC). Learn more in these videos, and read reviews here.
  • Advanced Placement Environmental Science (APES)

Recently Published

Petrenko, C.L. and A.J. Friedland. 2015. Mineral soil carbon pool responses to forest clearing in Northeastern hardwood forests. Global Change Biology-Bioenergy doi: 10.1111/gcbb.12221


Richardson, J.B., E.C. Donaldson, J.M. Kaste and A.J. Friedland. 2015. Forest floor lead, copper and zinc concentrations across the northeastern United States: Synthesizing spatial and temporal responses. Science of the Total Environment 505:851-859.