E. H. Helmer
E. H. Helmer
International Institute of Tropical Forestry, USDA Forest Service
Потвърден имейл адрес: fs.fed.us
Root biomass allocation in the world's upland forests
MA Cairns, S Brown, EH Helmer, GA Baumgardner
Oecologia 111 (1), 1-11, 1997
Free access to Landsat imagery.
CE Woodcock, R Allen, M Anderson, A Belward, R Bindschadler, ...
SCIENCE VOL 320: 1011, 2008
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
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
Plant diversity patterns in neotropical dry forests and their conservation implications
K Banda, A Delgado-Salinas, KG Dexter, R Linares-Palomino, ...
Science 353 (6306), 1383-1387, 2016
Emerging forests on abandoned land: Puerto Rico’s new forests
AE Lugo, E Helmer
Forest Ecology and Management 190 (2-3), 145-161, 2004
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
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
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
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
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
Cloud-free satellite image mosaics with regression trees and histogram matching
EH Helmer, B Ruefenacht
Photogrammetric Engineering & Remote Sensing 71 (9), 1079-1089, 2005
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
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
Forest conservation and land development in Puerto Rico
EH Helmer
Landscape Ecology 19 (1), 29-40, 2004
The landscape ecology of tropical secondary forest in montane Costa Rica
EH Helmer
Ecosystems 3 (1), 98-114, 2000
Summary for policymakers of the regional assessment report on biodiversity and ecosystem services for the Americas of the Intergovernmental Science-Policy Platform on …
J Rice, CS Seixas, ME Zaccagnini, M BedoyaGaitán, N Valderrama, ...
IPBES book, 2018
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
The forest types and ages cleared for land development in Puerto Rico
T Kennaway, EH Helmer
GIScience & Remote Sensing 44 (4), 356-382, 2007
Diversity and composition of tropical secondary forests recovering from large-scale clearing: results from the 1990 inventory in Puerto Rico
JD Chinea, EH Helmer
Forest Ecology and Management 180 (1-3), 227-240, 2003
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