Large Tree Inventory | Tanguro

Inventory dataset used in Forest recovery pathways after fire, drought, and windstorms in southeastern Amazon (Maracahipes et al. 2026 PNAS). # h1 Large Tree Inventory | Tanguro ## h2 Our research is carried out on the Tanguro Farm in Querência, Mato Grosso. The farm has about 83 thousand hectares, 60% covered by forest and 40% used for growing soy, corn, and cotton crops. Forest clearing started around 1973 and lasted until 1992, when the last deforestation on the farm took place. The open areas were used for pasture until 2004, when the conversion to soy cultivation began. The farm is in the transition zone between Cerrado and Amazon Rainforest, and the species composition of the vegetation receives floristic and faunistic contributions from both phytogeographic domains (Balch et al. 2008). However, this region is referred to as the "Arc of deforestation" because it concentrates the highest rates of deforestation for the advance of agricultural activities. In addition, the study area is located in the headwaters of the Xingu River, with several springs and tributary streams. Since 2004, several studies have generated a significant database on biodiversity and significant anthropic impacts on the Tanguro Farm. With respect to vegetation structure, the canopy is closed (5 m2 m--2), but the average tree height (20 meters), biomass (166 Mg ha--1), and diversity (120 species) are lower than those of central Amazonia (Balch et al. 2008). These forests are known to be relatively resistant to single fires, but dramatically impacted by recurrent fires, especially under extreme weather conditions (Balch et al. 2015). These fires cause high tree mortality and degrade forest structure (Balch et al. 2011, Brando et al. 2014), alter regeneration and plant succession patterns (Balch et al. 2013), and facilitate the invasion of C4 grasses, promoting a process of forest impoverishment (Nepstad et al. 2008, Silvério et al. 2013). Our experimental area was established in 2004, being the largest controlled burning experiment conducted by IPAM at Fazenda Tanguro. The first experiment has a total area of 150 ha (1.0 × 1.5 km) divided into three adjacent 1 × 0.5 km plots, with the following treatments: annual burning, - which was burned annually at the end of the dry season (late September or early October) between 2004 and 2010, except 2008; triannual burning, with prescribed burning in 2004, 2007, and 2010; and control -- treatment excluding burning. Across the area we measured all large trees (DBH ≥40 cm) since 2004. ### h3 Article 1: https://doi.org/10.1111/gcb.14659 #### h4 Article 2: https://doi.org/10.1111/j.1365-2486.2008.01655.x