2.4.3—Biome distribution determinants

Use temperature level and seasonality first, then precipitation amount and timing, to infer a likely biome.

Warm and wet all year favours rainforest; persistent dryness favours desert; very cold temperatures and a short growing season favour tundra. Climate constrains producers, which then shape food webs.

A graph with 25°C throughout and 180 mm rain every month is more consistent with rainforest than savanna.

Seasonal water limitation; rainfall timing matters, not just annual total.

Do not name a biome from temperature alone; water availability and seasonality are essential.