{"id":"goodman-2013-attalea-phalerata","source":{"id":"goodman-2013","citation":"Goodman, R. C., Phillips, O. L., del Castillo Torres, D., Freitas, L., Cortese, S. T., Monteagudo, A., & Baker, T. R. (2013). Amazon palm biomass and allometry. Forest Ecology and Management, 310, 994–1004.","title":"Amazon palm biomass and allometry","authors":["Goodman, R. C.","Phillips, O. L.","del Castillo Torres, D."],"year":2013,"venue":"Forest Ecology and Management","doi":"10.1016/j.foreco.2013.09.045","url":"https://doi.org/10.1016/j.foreco.2013.09.045","read_url":"http://eprints.whiterose.ac.uk/77906/7/Amazon%20Palm%20Biomass_Goodman_with_coversheet.pdf","access":"paywalled","checked_at":"2026-11-01","status":"current"},"name":"Attalea phalerata AGB from stem height","output":{"quantity":"agb"},"expression":"1.0712 * exp(3.2579 + 1.1249 * ln(Hstem + 1))","published":{"expression":"1.0712 * exp(3.2579 + 1.1249 * ln(Hstem + 1))","units":{"Hstem":"m"},"output_unit":"kg"},"taxon":{"level":"species","name":"Attalea phalerata","family":"Arecaceae","group":"palm"},"region":{"scope":"regional","countries":["PE"],"place":"Terra firme moist forest, forestry concession, Madre de Dios, Peru","biomes":["tropical"]},"stand":"natural","fit":{"n_trees":21,"dbh_min_cm":17,"dbh_max_cm":50,"r2":0.858,"rse":0.371,"cf":1.0712,"method":"OLS on ln(AGB) vs ln(Hstem + 1); Baskerville correction exp(RSE²/2)"},"evidence":[{"field":"expression","quote":"Attalea ln(AGB) ln(Hstem+1) 3.2579 1.1249 0.858 21 0.371","locator":"Table 3"},{"field":"fit.dbh_min_cm","quote":"MdD Attalea phalerata 21 17-50 0-20.1 7.1-25.6","locator":"Table 1"},{"field":"fit.cf","quote":"A correction factor, exp(RSE2/2), was applied to biomass estimates from logarithmically transformed models (Baskerville, 1972).","locator":"Section 2.4, lines 220–221 (author post-print)"}],"check":[{"inputs":{"Hstem":10},"expected":413.2579,"origin":"computed","note":"computed from the Table 3 coefficients times exp(RSE²/2)"}],"verification":"original_read","checked_at":"2026-11-01","notes":"Hstem = stem height to the base of the lowest leaf (m); the +1 lets stemless individuals (Hstem 0) be estimated. Fitted Hstem range 0–20.1 m. The authors used this genus model for other Attalea species in their plot analysis. Correction factor multiplied in."}