{"id":"cortes-sanchez-2019-coccolobifolia-stem","source":{"id":"cortes-sanchez-2019","citation":"Cortés-Sánchez, B. G., Ángeles-Pérez, G., De los Santos-Posadas, H. M., & Ramírez-Maldonado, H. (2019). Ecuaciones alométricas para estimar biomasa en especies de encino en Guanajuato, México. Madera y Bosques, 25(2), e2521799.","title":"Ecuaciones alométricas para estimar biomasa en especies de encino en Guanajuato, México","authors":["Cortés-Sánchez, B. G.","Ángeles-Pérez, G.","De los Santos-Posadas, H. M."],"year":2019,"venue":"Madera y Bosques","doi":"10.21829/myb.2019.2521799","url":"https://doi.org/10.21829/myb.2019.2521799","read_url":"https://myb.ojs.inecol.mx/index.php/myb/article/download/e2521799/1958","access":"open","license":"CC BY-NC-SA 4.0","checked_at":"2026-11-02","status":"current","notes":"Not added because the printed form does not reproduce sensible biomass: Table 5 foliage (Bh = 1.383732 × Dn^1.121362) and its total, Table 8 Group 2 foliage ((Dn² × At)^2.346752) and total, Table 9 Q. rugosa foliage (0.015364 × Dn² × At) and total."},"name":"Quercus coccolobifolia: stem biomass","output":{"quantity":"stem_biomass"},"expression":"exp(-2.628007) * D^1.884293 * H^0.629242","published":{"expression":"exp(-2.628007) * Dn^1.884293 * At^0.629242","units":{"At":"m","Dn":"cm"},"variables":{"Dn":"D","At":"H"},"output_unit":"kg"},"taxon":{"level":"species","name":"Quercus coccolobifolia Trel.","family":"Fagaceae","group":"broadleaf"},"region":{"scope":"site","countries":["MX"],"place":"Sierra de Santa Rosa, Guanajuato (bosques de encino)","biomes":["temperate"]},"stand":"natural","fit":{"n_trees":12,"dbh_min_cm":8.6,"dbh_max_cm":19.1,"h_min_m":5.36,"h_max_m":8.3,"method":"Additive system of component equations fitted simultaneously (iterated seemingly unrelated regression)"},"evidence":[{"field":"expression","quote":"Bf = exp (−2.628007) × Dn^1.884293 × At^0.629242","locator":"Table 9, Quercus coccolobifolia"},{"field":"fit.n_trees","quote":"12","locator":"Table 1, Q. coccolobifolia"}],"check":[{"inputs":{"D":11.8,"H":6.2},"expected":23.8241,"origin":"computed","note":"computed from the published form (Table 9)"},{"inputs":{"D":15.9,"H":7.4},"expected":46.7103,"origin":"computed","note":"computed from the published form (Table 9)"}],"verification":"original_read","checked_at":"2026-11-02","notes":"Table 1 sample size and ranges for this species. Adjusted R2 (not stored): stem 0.96, branches 0.75, foliage 0.33, total 0.94 (Table 9). The paper spells the species \"Q. cocccolobifolia\" in Table 9."}