The Uatumã-Trombetas moist forests blanket the vast Neotropical lowlands north of the Amazon River, centered on northern Brazil (the states of Roraima, Amazonas, and Amapá) and reaching across the border into Guyana and Suriname. Spanning the transition from the ancient crystalline uplands of the Guiana Shield to the younger sediments of the Amazon Basin, the ecoregion mixes tall humid rainforest with lowland forests flooded along Amazonian tributaries and seasonally drier forest and meadow on the shield. Canopy trees include the Brazil nut (Bertholletia excelsa), the towering Dinizia excelsa, bulletwood (Manilkara bidentata), Eschweilera coriacea, and the endemic timber tree acapú (Vouacapoua americana), with families such as Sapotaceae, Lecythidaceae, and Lauraceae well represented. The climate is hot and humid, classed as equatorial-monsoonal (Köppen Am), with mean monthly temperatures around 26 to 27 degrees Celsius and annual rainfall ranging from about 1,700 millimetres in the east to 3,000 millimetres in the west. The forests north and east of Manaus hold some of the highest local tree diversity on Earth, and the ecoregion's flagship species is the endemic pied tamarin, a small primate whose range is threatened by deforestation around Manaus and along the major rivers and roads.
Marker placed inside the RESOLVE 2017 polygon at 0.3°S, 57.0°W.
Climate snapshot for this ecoregion
°C
°F
Current zone range (2011–2040)
13b
Plotwright
CHELSA-derived typical winter month at this ecoregion's bbox grid.
Projected (2041–2070)
13b
Plotwright
Where the CHELSA models say the typical winter month is heading.
Average warming this ecoregion is on track for: +3.9°F by mid-century. SSP3-7.0 (current trajectory) · CHELSA v2.1 bio06 sampled across 10 of 10 points within this ecoregion's bounding box.
At a glance
Dominant biome
Tropical & Subtropical Moist Broadleaf Forests
Realm
Neotropic
Approximate area
182,304 sq mi
Conservation tier
Nature Could Reach Half Protected (Dinerstein NNH 2)
About the tropical & subtropical moist broadleaf forests biome
Warm, wet, highly productive forests — including tropical rainforests — with closed canopies, near year-round growing seasons, and the richest terrestrial biodiversity on Earth. Low seasonality and high rainfall sustain dense, layered vegetation from canopy to forest floor.
Catalog plants suited to this ecoregion
No catalog plants intersect this ecoregion's zone range. As the catalog grows to cover this region's climate band, suggestions will surface here.
Collections for this ecoregion
No curated collection's plants all fit this ecoregion's zone range. We surface a collection only when every member would grow here — partial fits get filtered out rather than mislead. As the catalog and the curated set both grow, this section will fill in.
Related ecoregions
Other tropical & subtropical moist broadleaf forests ecoregions to explore: