# Abies magnifica

Pinaceae. 8 equations apply. Each output lists them most specific first: fitted on this species, on a variety of it, pooled fits that included it, then its genus and family. Within each step, equations the authors advised against go last, then those read from compilations; more trees come first. The order shows how specific the evidence is, not which equation predicts best.

Wood density 0.4 g/cm³, estimated from 2 samples in 2 studies by the [Global Wood Density Database v.2](https://doi.org/10.5281/zenodo.16919509) (Fischer et al. 2026, https://doi.org/10.1111/nph.70860; CC BY 4.0).

## Aboveground biomass

1. Westfall et al. 2024 (this species): Fitted on this species; 14 trees; DBH 6.1–55.88 cm; Read from the original paper.
   - [NSVB California red fir, species-level (all ecodivisions): total aboveground biomass (without foliage), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-abies-magnifica-agb/), Westfall et al. 2024: Abies magnifica, United States; inputs DBH + Height; DBH 6.1–55.88 cm; 14 trees.

2. Chojnacky et al. 2014 (pooled, includes it): Pooled fit on 5 named species and others, this one included; Number of trees not stated; DBH 3–236 cm; Read from the original paper.
   - [North American taxa group: Abies ≥ 0.35 spg (Table 5)](https://treeallometry.org/equations/chojnacky-2014-abies-spg-ge-035/), Chojnacky et al. 2014: Abies ≥ 0.35 spg (A. amabilis, A. concolor, A. grandis, A. magnifica, A. procera, Abies spp.), United States; inputs DBH; DBH 3–236 cm.

## Branch biomass

1. Westfall et al. 2024 (this species): Fitted on this species; 14 trees; DBH 6.1–55.88 cm; Read from the original paper.
   - [NSVB California red fir, species-level (all ecodivisions): branch biomass (wood and bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-abies-magnifica-branch/), Westfall et al. 2024: Abies magnifica, United States; inputs DBH + Height; DBH 6.1–55.88 cm; 14 trees.

## Foliage biomass

1. Westfall et al. 2024 (this species): Fitted on this species; 14 trees; DBH 6.1–55.88 cm; Read from the original paper.
   - [NSVB California red fir, species-level (all ecodivisions): foliage biomass, Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-abies-magnifica-foliage/), Westfall et al. 2024: Abies magnifica, United States; inputs DBH + Height; DBH 6.1–55.88 cm; 14 trees.

## Stem volume

1. Westfall et al. 2024 (this species): Fitted on this species; 385–396 trees; DBH 6.1–81.28 cm; Read from the original paper.
   - [NSVB California red fir, species-level (all ecodivisions): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-abies-magnifica-volume/), Westfall et al. 2024: Abies magnifica, United States; inputs DBH + Height; DBH 6.1–81.28 cm; 396 trees.
   - [NSVB California red fir, Mediterranean Regime Mountains (M260): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-abies-magnifica-m260-volume/), Westfall et al. 2024: Abies magnifica, United States; inputs DBH + Height; DBH 6.1–81.28 cm; 385 trees.

2. Westfall et al. 2024 (same genus): Fitted on the genus Abies; 144–175 trees across all species; DBH 12.45–111.76 cm; Read from the original paper.
   - [NSVB fir spp., species-level (all ecodivisions): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-abies-spp-volume/), Westfall et al. 2024: Abies, United States; inputs DBH + Height; DBH 12.45–111.76 cm; 175 trees.
   - [NSVB fir spp., Marine Regime Mountains (M240): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-abies-spp-m240-volume/), Westfall et al. 2024: Abies, United States; inputs DBH + Height; DBH 12.45–111.76 cm; 144 trees.