{"id":"zianis-2003-iii-mcs","source":{"id":"zianis-2003","citation":"Zianis, D., & Mencuccini, M. (2003). Aboveground biomass relationships for beech (Fagus moesiaca Cz.) trees in Vermio Mountain, Northern Greece, and generalised equations for Fagus sp. Annals of Forest Science, 60(5), 439–448.","title":"Aboveground biomass relationships for beech (Fagus moesiaca Cz.) trees in Vermio Mountain, Northern Greece, and generalised equations for Fagus sp.","authors":["Zianis, D.","Mencuccini, M."],"year":2003,"type":"journal-article","venue":"Annals of Forest Science","doi":"10.1051/forest:2003036","url":"https://doi.org/10.1051/forest:2003036","read_url":"https://hal.science/hal-00883716/document","access":"open","checked_at":"2026-11-05","status":"current","notes":"The publisher's PDF returned HTTP 403 to the automated check, so publisher access could not be confirmed; the supplied HAL paper copy was read."},"name":"Fagus moesiaca stem dry biomass within the crown, DBH (Table III lnMCS)","output":{"quantity":"stem_biomass"},"expression":"1.1914 * exp(-4.0543 + 2.2116 * ln(D))","published":{"expression":"1.1914 * exp(-4.0543 + 2.2116 * ln(D))","units":{"D":"cm"},"output_unit":"kg"},"taxon":{"level":"species","name":"Fagus moesiaca","group":"broadleaf"},"region":{"scope":"site","countries":["GR"],"place":"Vermio Mountain, Northern Greece","biomes":["temperate"]},"stand":"natural","fit":{"n_trees":16,"dbh_min_cm":5.19,"dbh_max_cm":40.6,"r2":0.87,"rse":0.5918,"cf":1.1914,"method":"natural-log regression"},"evidence":[{"field":"expression","quote":"lnMCS = ln a + b lnD; ln a = −4.0543, b = 2.2116","locator":"Table III, model in caption and lnMCS row, p. 442"},{"field":"expression","quote":"lnMCS      lnD      –4.0543      2.2116","locator":"Table III, lnMCS, p. 442"},{"field":"output","quote":"MCS: the mass of the stem\nwithin the crown","locator":"Table III note, p. 442"},{"field":"output","quote":"oven dried to constant weight","locator":"Section 2.2, p. 441"},{"field":"published.units","quote":"Biomass is expressed in kg, diameter in cm, and height in m.","locator":"Table III note, p. 442"},{"field":"taxon","quote":"Fagus moesiaca Cz.","locator":"Abstract, p. 439"},{"field":"region","quote":"Vermio Mountains of Northern\nGreece","locator":"Abstract, p. 439"},{"field":"region","quote":"the forest can be classified as temperate Mediterranean","locator":"Section 2.1, p. 440"},{"field":"stand","quote":"Naturally regenerated, pure beech","locator":"Section 2.1, p. 440 (rendered page)"},{"field":"fit.n_trees","quote":"number of sampled trees was 16","locator":"Table III caption, p. 442"},{"field":"fit.dbh_min_cm","quote":"5.19 to 40.6 cm","locator":"Section 2.2, p. 441"},{"field":"fit.dbh_max_cm","quote":"5.19 to 40.6 cm","locator":"Section 2.2, p. 441"},{"field":"fit.r2","quote":"0.87","locator":"Table III, lnMCS, R2, p. 442"},{"field":"fit.rse","quote":"0.5918","locator":"Table III, lnMCS, SEE, p. 442"},{"field":"fit.cf","quote":"1.1914","locator":"Table III, lnMCS, CF, p. 442"},{"field":"fit.method","quote":"Napierian logarithmic function","locator":"Section 3.1, p. 442"}],"check":[{"inputs":{"D":20},"expected":15.583156,"origin":"computed","note":"Computed from Table III coefficients and CF."}],"verification":"original_read","checked_at":"2026-11-05","notes":"D is DBH at 1.3 m. Multiply by Table III's CF once; it equals exp(SEE²/2), although the text calls SEE²/2 CF. Stem mass within the crown only, not whole-stem biomass. The retained 5.19–40.6 cm range is explicitly reported in the methods (p. 441); the later comparison describes a largest Greek tree of 41.45 cm (p. 446). That sample-description discrepancy is not used to extend the reported range."}