# Nyssa sylvatica

Nyssaceae. 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 0.53 g/cm³, estimated from 58 samples in 6 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; 32 trees; DBH 3.56–45.21 cm; Read from the original paper.
   - [NSVB blackgum, species-level (all ecodivisions): total aboveground biomass (without foliage), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-nyssa-sylvatica-agb/), Westfall et al. 2024: Nyssa sylvatica, United States; inputs DBH + Height; DBH 3.56–45.21 cm; 32 trees.

2. Chojnacky et al. 2014 (pooled, includes it): Pooled fit on 13 named species and others, this one included; Number of trees not stated; DBH 3–64 cm; Read from the original paper.
   - [North American taxa group: Cornaceae/Ericaceae/Lauraceae/Platanaceae/Rosaceae/Ulmaceae (Table 5)](https://treeallometry.org/equations/chojnacky-2014-mixed-hardwood/), Chojnacky et al. 2014: Cornaceae/Ericaceae/Lauraceae/Platanaceae/Rosaceae/Ulmaceae (Cornus florida, Nyssa aquatica, N. sylvatica, Arbutus menziesii, Oxydendrum arboreum, Umbellularia californica, Sassafras albidum, Platanus occidentalis, Amelanchier spp., Prunus pensylvanica, P. serotina, P. virginiana, Sorbus americana, Ulmus americana, U. spp.), United States; inputs DBH; DBH 3–64 cm.

## Branch biomass

1. Westfall et al. 2024 (this species): Fitted on this species; 35 trees; DBH 3.56–45.21 cm; Read from the original paper.
   - [NSVB blackgum, species-level (all ecodivisions): branch biomass (wood and bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-nyssa-sylvatica-branch/), Westfall et al. 2024: Nyssa sylvatica, United States; inputs DBH + Height; DBH 3.56–45.21 cm; 35 trees.

## Foliage biomass

1. Westfall et al. 2024 (this species): Fitted on this species; 35 trees; DBH 3.05–45.21 cm; Read from the original paper.
   - [NSVB blackgum, species-level (all ecodivisions): foliage biomass, Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-nyssa-sylvatica-foliage/), Westfall et al. 2024: Nyssa sylvatica, United States; inputs DBH + Height; DBH 3.05–45.21 cm; 35 trees.

## Stem volume

1. Westfall et al. 2024 (this species): Fitted on this species; 82–703 trees; DBH 2.54–71.63 cm; Read from the original paper.
   - [NSVB blackgum, species-level (all ecodivisions): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-nyssa-sylvatica-volume/), Westfall et al. 2024: Nyssa sylvatica, United States; inputs DBH + Height; DBH 2.54–71.63 cm; 703 trees.
   - [NSVB blackgum, Hot Continental Regime Mountains (M220): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-nyssa-sylvatica-m220-volume/), Westfall et al. 2024: Nyssa sylvatica, United States; inputs DBH + Height; DBH 2.54–71.63 cm; 327 trees.
   - [NSVB blackgum, Subtropical Division (230): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-nyssa-sylvatica-230-volume/), Westfall et al. 2024: Nyssa sylvatica, United States; inputs DBH + Height; DBH 2.54–56.9 cm; 294 trees.
   - [NSVB blackgum, Hot Continental Division (220): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)](https://treeallometry.org/equations/westfall-2024-nyssa-sylvatica-220-volume/), Westfall et al. 2024: Nyssa sylvatica, United States; inputs DBH + Height; DBH 2.54–61.72 cm; 82 trees.