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Roberta E. Martin
Researcher at Arizona State University
Publications - 131
Citations - 11661
Roberta E. Martin is an academic researcher from Arizona State University. The author has contributed to research in topics: Canopy & Tree canopy. The author has an hindex of 52, co-authored 120 publications receiving 9779 citations. Previous affiliations of Roberta E. Martin include University of Colorado Boulder & Carnegie Institution for Science.
Papers
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Journal ArticleDOI
Grazing systems, ecosystem responses, and global change
Gregory P. Asner,Gregory P. Asner,Andrew J. Elmore,Lydia Olander,Roberta E. Martin,A. Thomas Harris +5 more
TL;DR: In this paper, the authors identified three regional syndromes inherent to global grazing: desertification, woody encroachment, and deforestation, which have widespread but differential effects on the structure, biogeochemistry, hydrology and biosphere-atmosphere exchange of grazed ecosystems.
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PROSPECT-4 and 5: Advances in the leaf optical properties model separating photosynthetic pigments
Jean-Baptiste Féret,Jean-Baptiste Féret,C. François,Gregory P. Asner,Anatoly A. Gitelson,Roberta E. Martin,Luc P.R. Bidel,Susan L. Ustin,Guerric Le Maire,Stéphane Jacquemoud +9 more
TL;DR: In this article, a new calibration and validation of the PROSPECT optical model is presented, which separates plant pigment contributions to the visible spectrum using several comprehensive datasets containing hundreds of leaves collected in a wide range of ecosystem types.
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Generalized model for NOx and N2O emissions from soils
William J. Parton,Elisabeth A. Holland,S. J. Del Grosso,Melannie D. Hartman,Roberta E. Martin,Arvin R. Mosier,Dennis S. Ojima,David S. Schimel +7 more
TL;DR: In this paper, the authors describe a submodel to simulate NOx and N2O emissions from soils and present comparisons of simulated NOx fluxes from the DAYCENT ecosystem model with observations from different soils.
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Spectral and chemical analysis of tropical forests: Scaling from leaf to canopy levels
TL;DR: In this article, the relationship between canopy reflectance and foliar properties under conditions of varying canopy structure has been investigated using airborne imaging spectroscopy data collected from 162 Australian tropical forest species, along with partial least squares analysis and canopy radiative transfer modeling.
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Airborne spectranomics: mapping canopy chemical and taxonomic diversity in tropical forests
TL;DR: In this paper, the authors present concepts that combine chemical and spectral remote sensing perspectives to facilitate canopy diversity mapping, using examples from their ongoing work in the Hawaiian Islands, demonstrating how a new “airborne sp...