Williamar Rodrigues Silva
A5052037396- Forest ecology and management
- Conservation, Biodiversity, and Resource Management
- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Plant and animal studies
- Growth and nutrition in plants
- Geography and Environmental Studies
- African Botany and Ecology Studies
- Remote Sensing in Agriculture
- Agricultural and Food Sciences
- Soil and Land Suitability Analysis
- Environmental Sustainability and Education
- Urban Arborization and Environmental Studies
- Forest Management and Policy
- Tree-ring climate responses
- Amazonian Archaeology and Ethnohistory
- Agroforestry and silvopastoral systems
- Soil Management and Crop Yield
- Phytochemistry Medicinal Plant Applications
- Fish biology, ecology, and behavior
Universidade Federal de Roraima
2016-2024
National Institute of Amazonian Research
2021
Instituto Nacional de Innovación Agraria
2021
Abstract. The seasonal climate drivers of the carbon cycle in tropical forests remain poorly known, although these account for more assimilation and storage than any other terrestrial ecosystem. Based on a unique combination pan-tropical data sets from 89 experimental sites (68 include aboveground wood productivity measurements 35 litter measurements), their associated canopy photosynthetic capacity (enhanced vegetation index, EVI) climate, we ask how allocation are related to seasonality...
Abstract. The seasonal climate drivers of the carbon cycle in tropical forests remain poorly known, although these account for more assimilation and storage than any other terrestrial ecosystem. Based on a unique combination pan-tropical data sets from 89 experimental sites (68 include aboveground wood productivity measurements 35 litter measurements), their associate canopy photosynthetic capacity (enhanced vegetation index, EVI) climate, we ask how allocation are related to seasonality...
Wood density is expressed by the ratio between dry weight and fresh volume of a sample piece. The value this measure an important variable for assessing wood functional properties, successional stages biomass/carbon stock estimates in different terrestrial ecosystems. data were collected tree species from ecotone forests northern Brazilian Amazonia. We sampled 680 individuals with stem diameter ≥10 cm. For each individual measurements taken three variables: bark thickness (mm), (g cm-3)...
Ecotone has been defined as "a multi-dimensional environmentally stochastic interaction zone between ecological systems with characteristics in space and time, by the strength of interaction" (Hufkens et al. 2009). This is a known concept to define transitional zones two or more communities, ecosystems biotic regions. forests, dispersed northern Brazilian Amazonia, are natural formations which have largely affected anthropogenic impacts, such deforestation fire. Maracá Ecological Station,...
Esta errata se refere à seguinte publicação: Padrões alométricos de indivíduos arbóreos em áreas públicas da cidade Boa Vista, Roraima. Boletim do Museu Integrado Roraima (Online), Brasil, v. 15, n. 1, p. 20–28, 2023. DOI: 10.24979/bmirr.v15i1.981. Disponível em: https://periodicos.uerr.edu.br/index.php/bolmirr/article/view/981.. Acesso 26 mar. 2024. O defeito está localizado na filiação dos autores e definição das palavras-chave. modificação não altera a interpretação resultados. A equipe...
The structure of tree communities in tropical forests depends on environmental filters and biotic interactions such as competition facilitation. Many ecotone Northern Amazonia are intriguingly populated by assemblages characterized distinct abundances a single species, Peltogyne gracilipes (Leguminosae). It is unclear whether this pattern solely reflects or also antagonistic among species with similar habitat requirements. aim study was to determine the response richness composition filters,...
EVI in water-limited sites + pre R² = 0.61 cld 0.48 -dtr 0.62 vap 0.55 tmn 0.42 swc 0.54 rad 0.31 ± pet 0.36 tmp 0.24 tmx 0.23 a with mixed limitations 0.13 0.08 dtr 0.09 0.18 0.22 0.17 0.33 0.14
A alometria pode ser definida como as relações de tamanho e forma dos organismos vivos, provenientes características físicas ou fisiológicas ocasionando variações nas dimensões do organismo. Neste contexto, este estudo objetivou investigar se duas espécies gênero Byrsonima, que vivem sob mesmas condições ambientais no lavrado Roraima, apresentam alométricas semelhantes entre si. Foram coletados dados biométricos das Byrsonima. Para tanto, foram instaladas quatro parcelas 0,25 ha em área...