Shorea guiso
Definition
Shorea guiso, known as guiso, is a large dipterocarp rainforest tree of the red balau timber group, occurring in the Philippines and parts of mainland Southeast Asia. Its hard, dark reddish-brown wood has made it a prized construction timber.
Identities
| Source Type | Identity |
|---|---|
| Wikipedia | Shorea guiso |
| Wikidata | Q5490546 |
| DBpedia | N/A |
Also Known As
Guiso; red balau; balau (collective trade name for the hard Shorea timbers of the section this species belongs to).
Examples and Analogies
Among dipterocarps, guiso is like the iron floorboard of the forest: where white lauan yields soft pale lumber, its dense red wood dulls saws and shrugs off decades of tread — the reason builders once sought it by name.
Usage Scenarios
- Heavy construction, bridges, flooring and boatbuilding
- source of dammar-type oleoresin from the bark
- component of lowland mixed-dipterocarp forest ecosystems
Strategies
Sustainable use emphasizes reduced-impact logging, retention of mother trees for regeneration, plantation research, and certification schemes that steer buyers toward legally harvested balau.
Security and Safety Measures
Felling emergent giants is among the deadliest work in forestry, requiring fell-cut expertise and escape lanes; the tree’s resin saturates wounds and can feed fierce fires in dry months.
Historical Context
Guiso entered commerce during the long era when the Philippines exported its dipterocarp wealth as “lauan” and “balau” from the American period onward, a trade that progressively emptied the lowland forests of the biggest hardwoods.
Challenges and Controversies
Decades of overharvest and land conversion have made the species a conservation concern across its range; illegal logging of residual stands and disputes over timber-origin documentation remain flashpoints in forest governance.
Related Topic
White Lauan (Shorea contorta) — a major Philippine Shorea timber of the white lauan group, counterpart to guiso among the country’s classic hardwoods