Remote analysis of biological invasion and biogeochemical change

Gregory P. Asner, Peter M. Vitousek

Research output: Contribution to journalArticlepeer-review

215 Scopus citations


We used airborne imaging spectroscopy and photon transport modeling to determine how biological invasion altered the chemistry of forest canopies across a Hawaiian montane rain forest landscape. The nitrogen-fixing tree Myrica faya doubled canopy nitrogen concentrations and water content as it replaced native forest, whereas the understory herb Hedychium gardnerianum reduced nitrogen concentrations in the forest overstory and substantially increased aboveground water content. This remote sensing approach indicates the geographic extent, intensity, and biogeochemical impacts of two distinct invaders; its wider application could enhance the role of remote sensing in ecosystem analysis and management.

Original languageEnglish (US)
Pages (from-to)4383-4386
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number12
StatePublished - Mar 22 2005
Externally publishedYes


  • Hawaii
  • Imaging spectroscopy
  • Invasive species
  • Remote sensing
  • Tropical forest

ASJC Scopus subject areas

  • General


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