Tropical Trees Have More Positive Neighbor Links
Get the Health newsletter
Daily health & science — research, biotech, public health, the studies worth knowing. Free.
- Tropical trees have higher proportions of positive neighbor interactions than trees in temperate forests, according to the study.
- The research compared 17 forest sites across five continents, mapping nearly 3 million trees representing over 5,000 species using ForestGEO methods.
- Positive interactions are roughly equal across tropical sites but decline in forests farther from the equator.
- Legume trees, which fix nitrogen for neighboring trees, are less common farther from the equator.
- Non‑arbuscular mycorrhizal fungi are more associated with tropical trees, helping them capture scarce nutrients and support interspecies facilitation.
- Han Xu led the research with co‑authors Matteo Detto and Suqin Fang; the Nature (2026) paper involved 29 institutions such as STRI and the Chinese Academy of Forestry.
Why it matters: Ecologists and forest managers gain a clearer mechanism for tropical biodiversity, as the study links facilitative neighbor dynamics to species richness; this insight could guide restoration projects that prioritize legume planting and mycorrhizal support, while temperate forest strategies may need to address weaker facilitation.
Ask SkimNews
