6 documents found, page 1 of 1
Pervasive gaps in Amazonian ecological research
Carvalho, Raquel L.; Resende, Angelica F.; Barlow, Jos; França, Filipe M.; Moura, Mario R.; Maciel, Rafaella; Alves-Martins, Fernanda; Shutt, JackBiodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain underst...
Edaphic Factors and Flooding Periodicity Determining Forest Types in a Topograp...
Beltrán, Alemán, L. A.; Barbosa, Reinaldo Imbrozio; Montero, Fernández, I.; Carvalho, Lidiany Camila da Silva; Barni, Paulo Eduardo
Padrão espacial de espécies madeireiras da Amazônia pelo método de coordenadas ...
Condé, Tiago Monteiro; Helio, Tonini,; Silva, Fernando da; Barni, Paulo Eduardo; Celes, Carlos Henrique Souza; de, Araujo, Raquel Fernandes
Spatial distribution of forest biomass in Brazil's state of Roraima, northern A...
Barni, Paulo Eduardo; Manzi, Antônio Ocimar; Condé, Tiago Monteiro; Barbosa, Reinaldo Imbrozio; Fearnside, Philip MartinForest biomass is an important variable for calculating carbon stocks and greenhouse gas emissions from deforestation and forest fires in Brazilian Amazonia. Its spatial distribution has caused controversy due to disagreements over the application of different calculation methodologies. Standardized networks of forest surveys provide an alternative to solve this problem. This study models the spatial distributi...
Desmatamento no sul do estado de Roraima: padrões de distribuição em função de ...
Barni, Paulo Eduardo; Fearnside, Philip Martin; Graça, Paulo Maurício Lima Alencastro deO desmatamento na Amazônia representa, atualmente, um dos principais problemas ambientais do Brasil. A contenção deste processo requer políticas públicas baseadas no entendimento das forças que controlam, aceleram e desaceleram a perda de floresta. Para avaliar ocorrências de desmatamento no sul do Estado de Roraima foram utilizados dois buffers de 20 km de largura subdivididos em oito faixas de 2500 metros ao ...
Spatial pattern of Amazonian timber species using cartesian and spatial coordin...
Condé, Tiago Monteiro; Tonini, Helio; Silva, Fernando da; Barni, Paulo Eduardo; Souza Celes, Carlos Henrique; Araujo, Raquel Fernandes deGeographic information system (GIS) applied to forest analysis permit the recognition and analysis of spatial patterns of species in two and three dimensional. The aim of this study to demonstrate the efficiency of cartesian and spatial coordinates method (MCCE), method of correcting UTM coordinates of trees location in accordance with the location of field or Cartesian (X ,Y), combined with natural neighbor in...