Navegando por Autor "GOMES, Vitor Hugo Freitas"

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Acesso aberto (Open Access)
Impactos das mudanças climáticas e do desflorestamento sobre a flora arbórea da Amazônia
(Universidade Federal do Pará, 2018-11-30) GOMES, Vitor Hugo Freitas; STEGGE, Hans ter; http://lattes.cnpq.br/7778964226916459; VIEIRA, Ima Célia Guimarães; http://lattes.cnpq.br/3761418169454490
Amazonia has an incredible biodiversity, shaped over millions of years. In recent millennia the climate in the region has become more humid, increasing the availability of suitable habitat for forest species and influencing its distributions and the expansion of the forest in this period. However, human influences on climate and land use have led to a reduction in the habitat of many species in the region, and projections show an intensification in the future with impacts potentially negative on the richness and distribution of Amazonian biodiversity. In addition, there are several knowledge gaps on how climate and land use has shaped and will shape the Amazonian rainforest, and the wide variety of methods available for such analysis also raises questions on the best methodological practices for studying an area as large and diverse as Amazonia. Understanding the origin, maintenance and loss of biodiversity has a profound importance for future human life. This thesis addresses some of the knowledge gaps on these topics, comparing methods of estimating richness and distribution of species of the Amazonian rainforest at different time scales. This study is an interdisciplinary research that relates aspects of different scientific areas to understanding the consequences of the two main threats to Amazonian biodiversity attributed to climate change and deforestation. The study was supported by a cooperation between the Naturalis Biodiversity Center – The Netherlands and Museu Paraense Emílio Goeldi – MPEG on a Sandwich Doctorate Scholarship – SWE (CNPq Prossess 203102/2015-0). Furthermore, the study is part of the INCT project Biodiversidade e Uso da Terra na Amazônia (Biodiversity and Land Use in Amazonia) (CNPq Prossess 574008/2008-0), coordinated by MPEG, which is dedicated to the study of biodiversity and Amazonian landscape, aiming to understand environmental and social consequences of different land uses, providing scientific bases for sustainable economic practices and support for public policies for Amazonia.
Acesso aberto (Open Access)
Modelagem de distribuição de espécies comerciais da flora ameaçadas no estado do Pará: um enfoque sobre as unidades de conservação
(Universidade Federal do Pará, 2012-09-13) GOMES, Vitor Hugo Freitas; IMBIRIBA, Breno Cesar de Oliveira; http://lattes.cnpq.br/7979656297541988
In order to identify potential sites for endangered species conservation were compared distribution models of commercial endangered species of the states of Pará flora, with maps of protected areas in the state, and observe the occurrence of these species within and outside these areas. This study aims to compare distribution models of endangered commercial species of the state of Pará flora, with the maps of protected areas in the state, and observe the occurrence of these species within and outside these areas. Through this comparison objective is to indicate potential sites for conservation of these species. Currently 53 species of the state of Pará flora are threatened with extinction. The species chosen are part of the Conservation Project pau-cravo, castanheira, pau-rosa and and maçaranduba, developed through a partnership between Goeldi Museum (MPEG), Ominia Minerals / Alcoa and Foundation of Research and Development (FADESP). The development of these models was made by the software Maxent 3.3.3, which uses the method of maximum entropy to analyze the data of species occurrence and generate their distribution models. The distribution models show which areas are suitable for the presence of the species, based on data of occurrence, and the characteristics of these sites, composed by environmental variables.