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Registros recuperados: 3
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A conservationist approach on environmental diagnosis of ground use in the Iguatemi river basin, Mato Grosso do Sul State, Brazil - doi: 10.4025/actascibiolsci.v34i3.9001 Biological Sciences
Souto, Marco Antonio Gomes; Instituto Reserva Natural.
Landscape Ecology is a contemporary approach in conservation studies in which, coupled to the development and use of GIS-based tools, provides new methods for the analysis of forest fragments. Based on these new approaches, the environmental assessment of ground use in the Iguatemi river basin Mato Grosso do Sul State, Brazil is provided through conservation-based flora and ecology aspects. A regional map of ground use with field-collected data using Rapid Ecological Assessment methodology and digital satellite images was prepared. AER analysis showed a highly impacted region featuring intense transformation in ground use with a conversion of 87% of native forest into grazing and agriculture land. The general situation is inconsistent with APA guidelines,...
Palavras-chave: 2.05.00.00-9; 2.05.03.00-8 landscape ecology; Conservation; Forest fragments Ecologia; Ecologia Aplicada.
Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9001
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Current and historical climate signatures to deconstructed tree species richness pattern in South America - doi: 10.4025/actascibiolsci.v35i2.14202 Biological Sciences
Lima-Ribeiro, Matheus Souza; Universidade Federal de Goias; Faleiro, Frederico Valtuille; Universidade Federal de Goias; Silva, Daniel Paiva; Universidade Federal de Goias.
The purpose of this study was to investigate the importance of present and historical climate as determinants of current species richness pattern of forestry trees in South America. The study predicted the distribution of 217 tree species using Maxent models, and calculated the potential species richness pattern, which was further deconstructed based on range sizes and modeled against current and historical climates predictors using Geographically Weighted Regressions (GWR) analyses. The current climate explains more of the wide-ranging species richness patterns than that of the narrow-ranging species, while the historical climate explained an equally small amount of variance for both narrow-and-wide ranging tree species richness patterns. The richness...
Tipo: Padrões espaciais Palavras-chave: 2.00.00.00-6; Current and historical climate signatures to deconstructed tree species richness pattern in South America; Ecologia Aplicada.
Ano: 2013 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14202
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Fire Ecology and the impact on Amazonian vegetation PFB - Pesquisa Florestal Brasileira
Liesenfeld, Marcus Vinicius Athaydes; Vieira, Gil; Miranda, Ires Paula de Andrade.
The aiming of this review is to point out some research fields in fire ecology and its impact on Amazonia vegetation. The incidence of fire on the moist Amazon region sounded a contradiction until recent years. Fire always acted in vegetation structuring, even though independent of human existence. However, fire regimes are changing worldwide, as in the Amazon, motivated by global climate change and climate anomalies. Forest fires impact vegetation differently, depending on the ecosystem, soil type, and plant morphology and age. Many species can respond positively, with survival mechanisms or post-fire re-growth. A better understanding of how Amazon plants respond to fire impact is necessary in order to understand if Amazon moist forest is actually still...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forest fires; Natural regeneration; Environmental impact Botânica; Ecologia; Ecologia Aplicada; Ecologia do Fogo; Incêndios Florestais Incêndio florestal; Regeneração da floresta; Impacto ambiental.
Ano: 2016 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1222
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