# Fonseca G. et al. 2009: Modelos para estimar la biomasa de especies nativas en plantaciones y bosques secundarios en la zona Caribe de Costa Rica

Fonseca G., W., Alice G., F., & Rey B., J. M. (2009). Modelos para estimar la biomasa de especies nativas en plantaciones y bosques secundarios en la zona Caribe de Costa Rica. Bosque (Valdivia), 30(1), 36–47.

- DOI: https://doi.org/10.4067/S0717-92002009000100006
- Access: open access
- Copy we read: https://www.scielo.cl/pdf/bosque/v30n1/art06.pdf
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-01
- Page: https://treeallometry.org/sources/fonseca-2009/

## Equations from this source (3)

### Caribbean Costa Rica secondary forest (35 species), root biomass from DBH

Root biomass for Secondary forest trees, 35 species (highest-IVI species per diameter class), Costa Rica. Inputs: DBH. DBH 2.8–28.2 cm. 122 trees.

As printed (Cuadro 2, Bosque secundario):

> Bra = exp(-3,98702 + 2,48739*ln(d)) 91,25 0,5053 – 122 1,14

Page: https://treeallometry.org/equations/fonseca-2009-secondary-forest-roots/

### Hieronyma alchorneoides plantations, total tree biomass incl. roots (Bt)

Total biomass for Hieronyma alchorneoides, Costa Rica. Inputs: DBH. DBH 0.5–28.8 cm. 53 trees.

As printed (Cuadro 2, Hieronyma alchorneiodes):

> Bt = exp(-2,12607 + 1,69594* d ^0,5) 97,77 0,3478 – 53 1,06

Page: https://treeallometry.org/equations/fonseca-2009-hieronyma-alchorneoides-total/

### Vochysia guatemalensis plantations, total tree biomass incl. roots (Bt)

Total biomass for Vochysia guatemalensis, Costa Rica. Inputs: DBH. DBH 0.5–40.5 cm. 51 trees.

As printed (Cuadro 2, Vochysia guatemalensis (R2aj %, SEE, IF, n, FC)):

> Bt = exp(-1,44742 + 1,3308* d ^0,5) 97,98 0,3682 – 51 1,07

Page: https://treeallometry.org/equations/fonseca-2009-vochysia-guatemalensis-total/