{"id":"yavit-2017-guadua-dbh","source":{"id":"yavit-2017","citation":"Yavit, N. (2017). Allometric derivation and estimation of Guadua weberbaueri and G. sarcocarpa biomass in the bamboo-dominated forests of southwestern Amazonia. bioRxiv preprint.","title":"Allometric derivation and estimation of Guadua weberbaueri and G. sarcocarpa biomass in the bamboo-dominated forests of southwestern Amazonia","authors":["Yavit, N."],"year":2017,"venue":"bioRxiv (preprint)","doi":"10.1101/129262","url":"https://doi.org/10.1101/129262","read_url":"https://www.biorxiv.org/content/biorxiv/early/2017/04/21/129262.full.pdf","access":"open","license":"CC BY-ND 4.0","checked_at":"2026-11-02","status":"current"},"name":"Guadua weberbaueri and G. sarcocarpa culm AGB from DBH (DBH-only model)","output":{"quantity":"agb"},"expression":"-7.208 + 2.875 * D","published":{"expression":"-7.208 + 2.875 * DBH","units":{"DBH":"cm"},"variables":{"DBH":"D"},"output_unit":"kg"},"taxon":{"level":"genus","name":"Guadua (G. weberbaueri and G. sarcocarpa)","family":"Poaceae","group":"bamboo","members":["Guadua weberbaueri","Guadua sarcocarpa"],"members_complete":true},"region":{"scope":"regional","countries":["PE"],"place":"Madre de Dios and Ucayali, southeastern Peru","biomes":["tropical"]},"stand":"natural","fit":{"n_trees":278,"dbh_min_cm":1.8,"dbh_max_cm":8.1,"method":"least squares linear regression"},"evidence":[{"field":"expression","quote":"- 7.208 + 2.875x1","locator":"Table 1, DBH Model row"},{"field":"fit.n_trees","quote":"278","locator":"Table 1, DBH Model row, n column"},{"field":"fit.dbh_min_cm","quote":"1.8 - 8.1","locator":"Table 1, X1: DBH (cm) column"}],"check":[{"inputs":{"D":5},"expected":7.167,"origin":"computed","note":"hand-computed from the published form"}],"verification":"original_read","checked_at":"2026-11-02","notes":"Per-culm (ramet) aboveground biomass (culm, branches and leaves), linear in DBH; it goes negative below about 2.5 cm DBH. The paper reports Adj. R2 = 0.79 and RMSE = 3.86 (Table 1), not stored as r2 because it is adjusted. Output unit kg is read from the kg-per-ramet results and figure axes; the paper does not label the equation itself. The paper also gives complete (DBH, culm length, branch counts) and field (DBH, branch count) models, not added since they need variables outside the canonical list. Preprint, not peer reviewed."}