# Coprosma robusta

Rubiaceae. 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.

## Aboveground biomass

1. Wangui et al. 2026 (this species): Fitted on this species; 6–18 trees; Read from the original paper.
   - [Coprosma robusta (all sites): AGB from D and H (Table 7)](https://treeallometry.org/equations/wangui-2026-agb-coprosma-robusta-d-h/), Wangui et al. 2026: Coprosma robusta, New Zealand; inputs Root collar diameter + Height; 18 trees.
   - [Coprosma robusta (Massey University): AGB from D and H (Table 7)](https://treeallometry.org/equations/wangui-2026-agb-coprosma-robusta-massey-d-h/), Wangui et al. 2026: Coprosma robusta, New Zealand; inputs Root collar diameter + Height; 6 trees.

2. Marden et al. 2025 (this species): Fitted on this species; Number of trees not stated; Read from the original paper.
   - [Coprosma robusta, NZ, total aboveground biomass from RCD (Table 3)](https://treeallometry.org/equations/marden-2025-coprosma-agb/), Marden et al. 2025: Coprosma robusta, New Zealand; inputs Root collar diameter.

3. Wangui et al. 2026 (pooled, includes it): Pooled fit on 3 species, this one included; 19–54 trees across all species; Read from the original paper.
   - [Native shrubs NZ (3 spp, all sites): AGB from D (Table 7)](https://treeallometry.org/equations/wangui-2026-agb-gen-all-d/), Wangui et al. 2026: Coprosma robusta, Pittosporum crassifolium and Melicytus ramiflorus (generalized), New Zealand; inputs Root collar diameter; 54 trees.
   - [Native shrubs NZ (3 spp, Massey University): AGB from D and H (Table 7)](https://treeallometry.org/equations/wangui-2026-agb-gen-massey-d-h/), Wangui et al. 2026: Coprosma robusta, Pittosporum crassifolium and Melicytus ramiflorus (generalized), New Zealand; inputs Root collar diameter + Height; 19 trees.

## Total biomass

1. Marden et al. 2025 (this species): Fitted on this species; Number of trees not stated; Read from the original paper.
   - [Coprosma robusta, NZ, whole-plant biomass from RCD (Table 6)](https://treeallometry.org/equations/marden-2025-coprosma-total/), Marden et al. 2025: Coprosma robusta, New Zealand; inputs Root collar diameter.

## Root biomass

1. Marden et al. 2025 (this species): Fitted on this species; Number of trees not stated; Read from the original paper.
   - [Coprosma robusta, NZ, belowground biomass from RCD (Table 3)](https://treeallometry.org/equations/marden-2025-coprosma-bgb/), Marden et al. 2025: Coprosma robusta, New Zealand; inputs Root collar diameter.

## Height

1. Marden et al. 2025 (this species): Fitted on this species; Number of trees not stated; Read from the original paper.
   - [Coprosma robusta, NZ, height from RCD (Table 3)](https://treeallometry.org/equations/marden-2025-coprosma-h/), Marden et al. 2025: Coprosma robusta, New Zealand; inputs Root collar diameter.