Who's Who in
Sciences Academia

    Art Johnson

  • Professor
  • Art Johnson
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  • Department of Earth and Environmental Science
  • http://www.sas.upenn.edu/earth/
  • University of Pennsylvania
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  • 254-B Hayden Hall
    240 South 33rd Street
    Philadelphia, Pennsylvania 19104-6316
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  • Contact by e-mail?
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  • (1) the proximate and ultimate sources of macronutrients necessary for forest growth, and (2) the role of nutrients in limiting growth. As a new undertaking, we began a study of mummified forests of Eocene age (42 Ma) in the Canadian High Arctic.
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