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E. H. Helmer
E. H. Helmer
Otros nombresEileen Helmer, Eileen H. Helmer, E. Helmer
USDA Forest Service, International Institute of Tropical Forestry
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Año
Root biomass allocation in the world's upland forests
MA Cairns, S Brown, EH Helmer, GA Baumgardner
Oecologia 111 (1), 1-11, 1997
19081997
Free access to Landsat imagery.
CE Woodcock, R Allen, M Anderson, A Belward, R Bindschadler, ...
SCIENCE VOL 320: 1011, 2008
8982008
Plant diversity patterns in neotropical dry forests and their conservation implications
DryFlor, K Banda-R, A Delgado-Salinas, KG Dexter, R Linares-Palomino, ...
Science 353 (6306), 1383-1387, 2016
4762016
Mapping US forest biomass using nationwide forest inventory data and moderate resolution information
JA Blackard, MV Finco, EH Helmer, GR Holden, ML Hoppus, DM Jacobs, ...
Remote sensing of Environment 112 (4), 1658-1677, 2008
4452008
The ecological consequences of socioeconomic and land-use changes in postagriculture Puerto Rico
HR Grau, TM Aide, JK Zimmerman, JR Thomlinson, E Helmer, X Zou
BioScience 53 (12), 1159-1168, 2003
4282003
A flexible spatiotemporal method for fusing satellite images with different resolutions
X Zhu, EH Helmer, F Gao, D Liu, J Chen, MA Lefsky
Remote Sensing of Environment 172, 165-177, 2016
4112016
Emerging forests on abandoned land: Puerto Rico’s new forests
AE Lugo, E Helmer
Forest Ecology and Management 190 (2-3), 145-161, 2004
3892004
Mapping the climate of puerto rico, vieques and culebra
C Daly, EH Helmer, M Quiñones
International Journal of Climatology: A Journal of the Royal Meteorological …, 2003
3652003
An efficient and accurate method for mapping forest clearcuts in the Pacific Northwest using Landsat imagery
WB Cohen, M Fiorella, J Gray, E Helmer, K Anderson
Photogrammetric engineering and remote sensing 64 (4), 293-299, 1998
3391998
Bringing an ecological view of change to Landsat‐based remote sensing
RE Kennedy, S Andréfouët, WB Cohen, C Gómez, P Griffiths, M Hais, ...
Frontiers in Ecology and the Environment 12 (6), 339-346, 2014
3262014
Mapping the forest type and land cover of Puerto Rico, a component of the Caribbean biodiversity hotspot
E Helmer, O Ramos, TM López, M Quinones, W Diaz
Caribbean Journal of Science, Vol. 38, No. 3-4, 165–183,, 2002
2452002
Cloud-free satellite image mosaics with regression trees and histogram matching
EH Helmer, B Ruefenacht
Photogrammetric Engineering & Remote Sensing 71 (9), 1079-1089, 2005
2392005
Conterminous US and Alaska forest type mapping using forest inventory and analysis data
B Ruefenacht, MV Finco, MD Nelson, R Czaplewski, EH Helmer, ...
Photogrammetric Engineering & Remote Sensing 74 (11), 1379-1388, 2008
2202008
Mapping montane tropical forest successional stage and land use with multi-date Landsat imagery
EH Helmer, S Brown, WB Cohen
International journal of remote sensing 21 (11), 2163-2183, 2000
1762000
Forest conservation and land development in Puerto Rico
EH Helmer
Landscape Ecology 19 (1), 29-40, 2004
1582004
The landscape ecology of tropical secondary forest in montane Costa Rica
EH Helmer
Ecosystems 3 (1), 98-114, 2000
1142000
Biomass accumulation rates of Amazonian secondary forest and biomass of old-growth forests from Landsat time series and the Geoscience Laser Altimeter System
EH Helmer, MA Lefsky, DA Roberts
Journal of Applied Remote Sensing 3 (1), 033505, 2009
1002009
The forest types and ages cleared for land development in Puerto Rico
T Kennaway, EH Helmer
GIScience & Remote Sensing 44 (4), 356-382, 2007
962007
An Improved Flexible Spatiotemporal DAta Fusion (IFSDAF) method for producing high spatiotemporal resolution normalized difference vegetation index time series
M Liu, W Yang, X Zhu, J Chen, X Chen, L Yang, EH Helmer
Remote Sensing of Environment 227, 74-89, 2019
882019
An automatic method for screening clouds and cloud shadows in optical satellite image time series in cloudy regions
X Zhu, EH Helmer
Remote sensing of environment 214, 135-153, 2018
802018
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Artículos 1–20