Thaíse Emilio
A5035955843- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Species Distribution and Climate Change
- Plant Diversity and Evolution
- Forest ecology and management
- Plant Water Relations and Carbon Dynamics
- Conservation, Biodiversity, and Resource Management
- Wildlife Ecology and Conservation
- Soil erosion and sediment transport
- Soil Management and Crop Yield
- Fish biology, ecology, and behavior
- Tree-ring climate responses
- Leaf Properties and Growth Measurement
- Growth and nutrition in plants
- Genetic diversity and population structure
- Geography and Environmental Studies
- Hydrology and Watershed Management Studies
- Hydrology and Sediment Transport Processes
- Horticultural and Viticultural Research
- Evolution and Paleontology Studies
- Remote Sensing and LiDAR Applications
- Plant responses to water stress
- Oil Palm Production and Sustainability
- Land Use and Ecosystem Services
- Groundwater and Watershed Analysis
Universidade Estadual de Campinas (UNICAMP)
2018-2024
National Institute of Amazonian Research
2012-2024
Royal Botanic Gardens, Kew
2015-2024
Universidade Estadual Paulista (Unesp)
2024
Universidade Federal do Amazonas
2023
Universidade Federal do Rio de Janeiro
2023
State University of Norte Fluminense
2022
Universidade do Vale do Itajaí
2010
The vast extent of the Amazon Basin has historically restricted study its tree communities to local and regional scales. Here, we provide empirical data on commonness, rarity, richness lowland species across entire Guiana Shield (Amazonia), collected in 1170 plots all major forest types. Extrapolations suggest that Amazonia harbors roughly 16,000 species, which just 227 (1.4%) account for half trees. Most these are habitat specialists only dominant one or two regions basin. We discuss some...
Tropical forests are the global cornerstone of biological diversity, and store 55% forest carbon stock globally, yet sustained provisioning these ecosystem services may be threatened by hunting-induced extinctions plant-animal mutualisms that maintain long-term dynamics. Large-bodied Atelinae primates tapirs in particular offer nonredundant seed-dispersal for many large-seeded Neotropical tree species, which on average have higher wood density than smaller-seeded wind-dispersed trees. We...
Estimates of extinction risk for Amazonian plant and animal species are rare not often incorporated into land-use policy conservation planning. We overlay spatial distribution models with historical projected deforestation to show that at least 36% up 57% all tree likely qualify as globally threatened under International Union Conservation Nature (IUCN) Red List criteria. If confirmed, these results would increase the number on Earth by 22%. trends observed in Amazonia apply trees throughout...
Abstract The tropical forest carbon sink is known to be drought sensitive, but it unclear which forests are the most vulnerable extreme events. Forests with hotter and drier baseline conditions may protected by prior adaptation, or more because they operate closer physiological limits. Here we report that in South American climates experienced greatest impacts of 2015–2016 El Niño, indicating greater vulnerability temperatures drought. long-term, ground-measured tree-by-tree responses 123...
Abstract Species distribution models (SDMs) are widely used in ecology and conservation. Presence-only SDMs such as MaxEnt frequently use natural history collections (NHCs) occurrence data, given their huge numbers accessibility. NHCs often spatially biased which may generate inaccuracies SDMs. Here, we test how the of predictions relates to a spatial abundance model, based on large plot dataset for Amazonian tree species, using inverse distance weighting (IDW). We also propose new pipeline...
Background: Plant composition changes with topography and edaphic gradients that correlate soil-water nutrient availability. Data on soil water for the Amazon Basin are scarce, limiting possibility of distinguishing between influences plant composition. Aim: We tested a new proxy table depth, terrain height above nearest drainage (HAND), as predictor in trees, lianas, palms, shrubs, herbs compared HAND to conventional measures sea level (HASL) horizontal distances from (HDND). Methods:...
Abstract Aim Palms are an iconic, diverse and often abundant component of tropical ecosystems that provide many ecosystem services. Being monocots, tree palms evolutionarily, morphologically physiologically distinct from other trees, these differences have important consequences for services (e.g., carbon sequestration storage) in terms responses to climate change. We quantified global patterns palm relative abundance help improve understanding forests reduce uncertainty about under Location...
Background Native Amazonian populations managed forest resources in numerous ways, often creating oligarchic forests dominated by useful trees. The scale and spatial distribution of modification beyond pre-Columbian settlements is still unknown, although recent studies propose that human impact away from rivers was minimal. We tested the hypothesis past management tree community decreases with distance rivers. Methodology/Principal Findings In six sites, we inventoried trees palms DBH≥10 cm...
Abstract Aim A major problem for conservation in Amazonia is that species distribution maps are inaccurate. Consequently, planning needs to be based on other information sources such as vegetation and soil maps, which also We propose test the use of biotic data a common relatively easily inventoried group plants infer environmental conditions can used improve floristic patterns general. Location Brazilian Amazonia. Methods sampled 326 plots 250 m × 2 separated by distances 1–1800 km....
Abstract Aim To assess the relative roles of geologically defined terrain types (environmental heterogeneity) and a major river (physical dispersal barrier) as predictors ecological structuring biogeographical differentiation within Amazonian forests. Location Western Brazilian Amazonia, where Juruá its terraces cross 1000‐km‐long boundary between two geological formations (the Solimões Içá Formations). Methods We sampled 500‐km stretch with 71 transects (5 m by 500 m) that spanned both...
Abstract To determine the effect of rivers, environmental conditions, and isolation by distance on distribution species in Amazonia. Location: Brazilian Time period: Current. Major taxa studied: Birds, fishes, bats, ants, termites, butterflies, ferns + lycophytes, gingers palms. We compiled a unique dataset biotic abiotic information from 822 plots spread over Amazon. evaluated effects environment, geographic dispersal barriers (rivers) assemblage composition animal plant using multivariate...
Abstract Aim Water availability is the major driver of tropical forest structure and dynamics. Most research has focused on impacts climatic water availability, whereas remarkably little known about influence table depth excess soil processes. Nevertheless, given that plants take up from soil, supply are likely to be modulated by conditions. Location Lowland Amazonian forests. Time period 1971–2019. Methods We used 344 long‐term inventory plots distributed across Amazonia analyse effects...
It is a biogeographical trope that after several centuries of exploration, our knowledge the world's biodiversity still staggeringly incomplete (Meyer et al., 2016), even for well-studied groups such as trees (Keppel 2021). Thus, when study publishes new estimate number known (and unknown) tree species on Earth, it often gains global media attention. Recently, suggested there were approximately 73,000 worldwide and much 14% flora remains unknown to science (Gatti 2022). But how accurate are...
Background: Trees and arborescent palms adopt different rooting strategies responses to physical limitations imposed by soil structure, depth anoxia. However, the implications of these differences for understanding variation in relative abundance groups have not been explored. Aims: We analysed relationship between constraints tree palm basal area understand how properties are directly or indirectly related structure physiognomy lowland Amazonian forests. Methods: inventory data from 74...
Abstract The intensity and frequency of severe droughts in the Amazon region have increased recent decades. These extreme events are associated with changes forest dynamics, biomass floristic composition. However, most studies drought response focused on upland forests deep water tables, which may be especially sensitive to drought. Palms, tend dominate less well‐drained soils, also been neglected. relative neglect shallow tables palms is a significant concern for our understanding tropical...
Summary A negative relationship between stand biomass and the density of stems is expected to develop during self‐thinning process in resource‐limited forests; this leads a large proportion total occurring trees. Nevertheless, frequent disturbance regimes can reduce accumulation We investigated size–density relationships contribution trees (dbh ≥ 70 cm) 55 1‐ha plots along 600 km transect central‐southern Amazonia. The effects natural‐disturbance gradients (frequency storms soil...
Abstract Areas with shallow water tables comprise a significant portion of tropical forests and have distinct forest structure plant‐assemblage composition. It is not clear, however, how the table regime shapes distributions other organisms. Here, we evaluated influence water‐table level on ant‐assemblage richness, abundance, composition in terra firme forest, Central Amazonia. We sampled ants ten 250 m‐long transects, regularly distributed over 5 km 2 by extracting from 100 1‐m litter...
Abstract Amazonian forests harbor a large variety of understory herbs adapted to areas with different hydrological conditions, ranging from well‐drained seasonally flooded forests. The presence versus absence flooding forms the extremes gradient, various intermediate such as seasonal soil waterlogged areas, in between. We investigated relationship between and conditions Central using eighty‐eight 250 × 2 m plots distributed along 600‐km transect. Hydrological were determined regionally by...
Abstract Amazonia combines semi‐continental size with difficult access, so both current ranges of species and their ability to cope environmental change have be inferred from sparse field data. Although efficient techniques for modeling distributions on the basis a small number occurrences exist, success depends availability relevant data layers. Soil are important in this context, because soil properties been found determine plant occurrence patterns Amazonian lowlands at all spatial...
Tree growth and longevity trade-offs fundamentally shape the terrestrial carbon balance. Yet, we lack a unified understanding of how such vary across world’s forests. By mapping life history traits for wide range species Americas, reveal considerable variation in expectancies from 10 centimeters diameter (ranging 1.3 to 3195 years) show that pace trees can be accurately classified into four demographic functional types. We found emergent patterns strength between temperature gradient....
Planning of conservation priorities has often taken mapped forest types as surrogates for biological complementarity. In the Brazilian Amazon, these exercises have given equal weight to each type if they were all equally distinct. Here, we examine floristic similarity between assess reliability vegetation maps a surrogate canopy tree‐community composition. We analyzed differences at genus level twelve Amazonian using 1184 one‐hectare inventories large trees with three complementary...
The database of the Brazilian Program for Biodiversity Research (PPBio; GIVD ID SA-BR-001) includes data on environment and biological groups such as plants.It is organized by site, which usually a grid with 10 to 72 uniformly-distributed plots, has already surveyed 1,638 relevés across different ecosystems.The sampling design based RAPELD system allow integration from diverse taxa ecosystem processes.RAPELD spatially-explicit scheme monitor biodiversity in long-term ecological research...
Abstract The Amazon region in Brazil contains c. 5% of the palm species world. However, cover at macroecological scales has not yet been quantified this biome. Here, we used high spatial resolution LiDAR data, acquired from 610 flightlines over Brazilian Amazon, to map canopy for first time using a deep learning approach. image segmentation model U‐Net was selected mapping segments height (CHM) 0.5‐m resolution. To train and validate model, manually delineated 6971 931.43 ha forests on four...
Abstract Amazonian savannas are isolated patches of open habitats found within the extensive matrix tropical forests. There remains limited evidence on how plants from differ in traits related to drought resistance and water loss control. Previous studies have reported several xeromorphic characteristics savanna at leaf branch levels that linked soil, solar radiation, rainfall seasonality. How anatomical features relate plant hydraulic functioning this ecosystem is less known instrumental if...