A5079073703- Agricultural and Food Sciences
- Forest ecology and management
- Ecology and Vegetation Dynamics Studies
- Soil Management and Crop Yield
- Plant and animal studies
- Conservation, Biodiversity, and Resource Management
- Growth and nutrition in plants
- Amazonian Archaeology and Ethnohistory
- Plant Diversity and Evolution
- Environmental and biological studies
- Fish biology, ecology, and behavior
- Remote Sensing and LiDAR Applications
- Banana Cultivation and Research
- Species Distribution and Climate Change
- African Botany and Ecology Studies
- Rural Development and Agriculture
- Soil Carbon and Nitrogen Dynamics
- Plant biochemistry and biosynthesis
- Botanical Research and Applications
- Remote Sensing in Agriculture
- Heavy Metals in Plants
- Agroforestry and silvopastoral systems
- Plant Water Relations and Carbon Dynamics
- Indigenous Health and Education
- Geography and Environmental Studies
Brazilian Agricultural Research Corporation
2016-2025
Universidade Estadual do Amapá
2025
Universidade Federal do Amapá
2010-2025
Agricultural Research Corporation
2020-2023
Universidade Federal Rural da Amazônia
2023
John Wiley & Sons (United States)
2023
Hudson Institute
2023
Universidade Federal Rural de Pernambuco
2023
Instituto de Desenvolvimento Sustentável Mamirauá
2023
Instituto Florestal
2018
Abstract Around 30 Mm 3 of sawlogs are extracted annually by selective logging natural production forests in Amazonia, Earth’s most extensive tropical forest. Decisions concerning the management these will be major importance for Amazonian forests’ fate. To date, no regional assessment sustainability supports decision-making. Based on data from 3500 ha forest inventory plots, our modelling results show that average periodic harvests 20 m −1 not recover end a standard year cutting cycle....
Forest biomass is an essential indicator for monitoring the Earth's ecosystems and climate. It a critical input to greenhouse gas accounting, estimation of carbon losses forest degradation, assessment renewable energy potential, developing climate change mitigation policies such as REDD+, among others. Wall-to-wall mapping aboveground (AGB) now possible with satellite remote sensing (RS). However, RS methods require extant, up-to-date, reliable, representative comparable in situ data...
When 2 Mha of Amazonian forests are disturbed by selective logging each year, more than 90 Tg carbon (C) is emitted to the atmosphere. Emissions then counterbalanced forest regrowth. With an original modelling approach, calibrated on a network 133 permanent plots (175 ha total) across Amazonia, we link regional differences in climate, soil and initial biomass with survivors’ recruits’ C fluxes provide Amazon-wide predictions post-logging recovery. We show that net aboveground recovery over...
Abstract While attention on logging in the tropics has been increasing, studies long‐term effects of silviculture forest dynamics and ecology remain scare spatially limited. Indeed, most our knowledge tropical forests arises from carried out undisturbed forests. This bias is problematic given that logged disturbed are now covering a larger area than so‐called primary A new network permanent sample plots forests, Tropical managed Forests Observatory (Tm FO ), aims to fill this gap by...
The regeneration of Brazil nut trees depends on tree-fall gaps in the forest. However, shifting cultivation fallows also create comparable biotic and abiotic opportunities for dispersion establishment this gap-loving species. At same time, ability to resprout enables fallow individuals survive successive slash-and-burn cycles. Recognizing importance food security forest dwellers, we investigated whether high level found could be explained by resprouting capability trees, number cycles, past...
Objetivo: Compreender os desafios enfrentados pelo enfermeiro na implementação de práticas educativas Estratégia Saúde da Família. Métodos: Trata-se uma revisão integrativa realizada Biblioteca Virtual em (BVS) e Scientific Electronic Library Online (SciELO), a partir dos Descritores Ciências Saúde: “Educação saúde”, “Enfermagem” “Saúde família”, através do operador booleano “AND”. Critérios inclusão: artigos português, inglês ou espanhol, com texto completo disponível, que abordavam sobre...
Tall trees are pivotal in maintaining tropical forests' biodiversity and regulating biogeochemical cycles, mainly through their influence on carbon storage, nutrient cycling, habitat structuring. Despite ecological importance, the drivers behind spatial distribution environmental factors driving density of these emergent remain unexplained. Here we analyzed tall-tree data derived from airborne LiDAR across 900 randomly distributed transects throughout Brazilian Amazon. We paired each...
Abstract The fruit of Euterpe oleracea provides an energetic and nutritional juice that moves the Brazilian economy. major obstacle in production chain this species is scarcity off‐season lack knowledge about environmental or genetic factors control its production. We collected seeds from two populations E. produce fruits at different times year Amazon estuary (population 1, west region; population 2, east region) performed progeny tests (installed to determine hydroclimatic are related...
Energy exclusion in the Amazon imposes barriers to socioeconomic development of riverine communities, affecting açaí value chain. Photovoltaic solar energy is a promising solution; however, its insertion isolated communities with focus on strengthening chain still challenge. This research aims use photovoltaic as an integration mechanism for productive activities and better quality life riverside families Brazilian Amazon. study was conducted Ilha das Cinzas Community, Gurupá/PA, starting...
Nas últimas décadas, a implantação de áreas reflorestamento com espécies nativas tem sido impulsionada por um novo mercado consumidor consciente das questões ambientais, e madeira Tachigali vulgaris vem sendo investigada este propósito. Este estudo teve como objetivo avaliar o potencial da T. matéria prima painéis partículas homogêneas aglomeradas resina poliuretana à base óleo mamona (PU-Castor) ureia-formaldeído (UF). A composição química, densidade básica (Db) pH extrativos solúveis...
The relationship between tree height and diameter varies across forest types, introducing uncertainties in that can affect aboveground biomass estimates tropical forests. Here, we used a four-step approach to assess whether incorporating from local height-diameter models, compared two published equations, improves spatial scales. First, measured the of 1,962 trees representative types Northeastern Amazon: non-flooded terra-firme seasonally-flooded várzea Second, selected best models set 10...
Andiroba (Carapa guianensis) seeds are the source of an oil with a wide range biological activities and ethnopharmacological uses. However, few studies have devoted attention to innovative formulations, including nanoemulsions. The present study aimed obtain colloidal system andiroba using low-energy organic-solvent-free method. Moreover, preliminary residual larvicidal activity nanoemulsion against Aedes aegypti was evaluated. Oleic palmitic acids were major fatty acids, in addition...
Abstract Aim Amazon‐nut ( Bertholletia excelsa ) is a hyperdominant and protected tree species, playing keystone role in nutrient cycling ecosystem service provision Amazonia. Our main goal was to develop robust habitat suitability model of identify the most important predictor variables support conservation planting decisions. Localization Amazon region, South America. Methods We collected 3,325 unique records assembled >100 spatial organized across climatic, edaphic, geophysical...
A aplicação do lodo de esgoto em plantações florestais é uma das alternativas para resolver o problema da disposição final desse resíduo. O objetivo deste trabalho foi avaliar se a biossólido melhora fertilidade solo e estado nutricional mudas Eucalyptus grandis. experimento montado colunas PVC 20 cm diâmetro, com nove tratamentos (testemunha, adubação mineral, doses crescentes variando 10 160 t ha-1) quatro repetições. realizado durante 12 meses após plantio mudas. influenciou mais acidez...
Abstract Although tropical forests harbour most of the terrestrial carbon and biological diversity on Earth they continue to be deforested or degraded at high rates. In Amazonia, largest forest Earth, a sixth remaining natural is formally dedicated timber extraction through selective logging. Reconciling with provision other ecosystem services (ES) remains major challenge for managers policy-makers. This study applies spatial optimisation logging in Amazonian production analyse potential...
For more than three decades, major efforts in sampling and analyzing tree diversity South America have focused almost exclusively on trees with stems of at least 10 2.5 cm diameter, showing highest species the wetter western northern Amazon forests. By contrast, little attention has been paid to patterns drivers largest canopy emergent trees, which is surprising given these dominant ecological functions. Here, we use a machine learning approach quantify importance environmental factors apply...
Abstract The transport of seeds by water, i.e. hydrochory, is a key mechanism long‐distance dispersal constrained the attributes seed and hydrodynamics. In freshwater Amazon estuary, river hydrodynamics are influenced seasonal changes in precipitation tidal cycles. It not known to what extent hydrodynamic model may be able predict dispersal. Here we parameterised simulation (SisBaHia) estimate maximum distances per cycle, which were then compared with data from situ experiments. study was...
Várzea forests of the Amazon estuary contain species importance to riverine communities. For example, oil extracted from seeds crabwood trees is traditionally used combat various illnesses and as such artisanal extraction processes have been maintained. The objectives this study were (1) describe process involved in Fazendinha Protected Area, state Amapá; (2) characterise knowledge transfer associated with use within a peri-urban community; (3) discern medicinal uses oil. data obtained using...
Volumetric yield analysis is critical to optimizing performance in the timber industry. In Amazon and Amapá state, this information still little known scarce, therefore study was developed obtain analyze volumetric coefficient of ten commercial tree species test variation by diameter class. We collect data from for species. For each species, yields different classes were analyzed, as well difference between The overall obtained sawmills (43.95%) are within established standards operations...
Carapa guianensis is a multi-use tree species that used for the production of timber and non-timber forest products (NTFPs) are sold by rural Amazonian populations. Here we aimed to evaluate phenophases C. in várzea relate them climatic seasonality. Phenophases flowering (flower buds open flowers), fruiting (unripe ripe fruits), leaf flush fall were recorded 30 individual trees during 25 month period. Relationships between rainfall proportion each phenophase tested using Generalised Linear...
The variable environmental conditions of the Amazon forest can affect wood properties tree species distributed across its diverse phytophysiognomies. Carapa guianensis (Andiroba) occurs in upland and floodplain forests, oil seeds have multiple uses. aim this study was to evaluate C. trees estuarine forests River. Eight were selected, with four being from forests. fiber length, wall thickness, vessel diameter frequency, microfibril angle, specific gravity shrinkage evaluated. juvenile mature...
Abstract Accurate estimates of commercial volume in tropical forests are key for the implementation sustainable forest management plans. Because lack local or generic volumetric equations, most managers and forestry services still using traditional expansion factors (i.e., multiplication diameter by a given value) to estimate tree species Amazon. Volumetric models were developed through unique data set 1,264 fallen trees fully measured 150 sample plots located across broad range Amapá,...