Variation in Wood Density Determines Spatial Patterns in Amazonian Forest Biomass
Global Change Biology (2004) 10, 545–562, doi: 10.1111/j.1529-8817.2003.00751.x Variation in wood density determines spatial patterns in Amazonian forest biomass TIMOTHY R. BAKER*w ,OLIVERL.PHILLIPSw ,YADVINDERMALHIz, SAMUEL ALMEIDA§, LUZMILA ARROYO} , ANTHONY DI FIOREk , TERRY ERWIN**, TIMOTHY J. KILLEENww, SUSAN G. LAURANCEzz, WILLIAM F. LAURANCEzz, SIMON L. LEWISw , JON LLOYD*, ABEL MONTEAGUDO§§,§§§, DAVID A. NEILL}}, SANDRA PATIN˜ O *kk, NIGEL C. A. PITMAN***,J.NATALINOM.SILVAwwwzzz and RODOLFO VA´ SQUEZ MARTI´ NEZ§§§ *Max Planck Institut fu¨r Biogeochemie, Jena, Germany, wEarth and Biosphere Institute, School of Geography, University of Leeds, Leeds, UK, zSchool of GeoSciences, University of Edinburgh, Edinburgh, UK, §Museu Paraense Emilio Goeldi, Bele´m, Brazil, }Museo Noel Kempff Mercado, Santa Cruz, Bolivia, kDepartment of Anthropology, New York University, New York, USA, **Smithsonian Institution, Washington, DC, USA, wwCenter for Applied Biodiversity Science, Conservation International, Washington, DC, USA, zzSmithsonian Tropical Research Institute, Balboa, Panama, §§Herbario Vargas, Universidad Nacional San Antonio Abad del Cusco, Cusco, Peru, }}Missouri Botanical Garden, c/o Herbario Nacional del Ecuador, Quito, Ecuador, kkAlexander von Humboldt Biological Research Institute, Bogota, Colombia, ***Center for Tropical Conservation, Duke University, Durham, USA, wwwCIFOR, Tapajos, Brazil, zzzEMBRAPA Amazonia Oriental, Bele´m, Brazil, §§§Proyecto Flora del Peru´, Jardin Botanico de Missouri, Oxapampa, Peru Abstract Uncertainty in biomass estimates is one of the greatest limitations to models of carbon flux in tropical forests. Previous comparisons of field-based estimates of the above- ground biomass (AGB) of trees greater than 10 cm diameter within Amazonia have been limited by the paucity of data for western Amazon forests, and the use of site-specific methods to estimate biomass from inventory data.
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