Remote analysis of biological invasion and biogeochemical change

Gregory P. Asner; Peter M. Vitousek

doi:10.1073/pnas.0500823102

Remote analysis of biological invasion and biogeochemical change

Gregory P. Asner, Peter M. Vitousek

Research output: Contribution to journal › Article › peer-review

221 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	4383-4386
Number of pages	4
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	102
Issue number	12
DOIs	https://doi.org/10.1073/pnas.0500823102
State	Published - Mar 22 2005
Externally published	Yes

Keywords

Hawaii
Imaging spectroscopy
Invasive species
Remote sensing
Tropical forest

ASJC Scopus subject areas

General

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10.1073/pnas.0500823102

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AB - 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.

KW - Hawaii

KW - Imaging spectroscopy

KW - Invasive species

KW - Remote sensing

KW - Tropical forest

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Remote analysis of biological invasion and biogeochemical change

Abstract

Keywords

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