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	Provedor de dados Rev. Bras. Bot. (2) Acta Amazonica (1) Autor Silva,José Maria Cardoso da (3) Boltz,Frederick (1) Gomes,Andreza de Lourdes Souza (1) Gonçalves,Andrey Felipe Gomes (1) Guimarães,André Loubet (1) Marceliano,Maria Luiza Videiro (1) Raik,Daniela (1) Scarano,Fabio Rubio (1) Vieira,Ima Célia Guimarães (1) Vieira,José Luiz Fernandes (1) Mais... Palavra-chave Abandoned pastures (1) Amazonia (1) Antioxidants (1) Cordia multispicata (1) Environmental disturbances (1) Green economy (1) Lipid peroxidation (1) Redox balance (1) Reprocuctive biology (1) Rio+20 (1) Sustainable development (1) United Nations Conventions (1) Weed ecology (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2014 (1) 2012 (1) 1997 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Phenology, fruit set and dispersal of Cordia multispicata Cham., an important weed shrub of abandoned pastures in eastern Amazonia Rev. Bras. Bot. Vieira,Ima Célia Guimarães; Silva,José Maria Cardoso da. ABSTRACT - (Phenology, fruit set and dispersal of Cordia multispicata Cham., an important weed shrub of abandoned pastures in eastern Amazonia). The reproductive ecology of the distylous tropical shrub Cordia multispicata was studied in an abandoned pasture in Paragominas County , Pará state, Brazil. It is a common species in the Amazon basin where it occurs as a weed in open and disturbed habitats. C. multispicata has many flowers per inflorescence (85 ± 12) but 84% abort before fertilization. Flowering occurs throughout the year. Fruits are small, with a red fleshy pericarp (skin-pulp) attractive to birds. Fruit set is lower during the dry season (less than 30%) and higher during the rainy season when there are many visits of insects to the flowers.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Abandoned pastures; Amazonia; Cordia multispicata; Reprocuctive biology; Weed ecology. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000100005 Brazil on the spot: Rio+20, sustainability and a role for science Rev. Bras. Bot. Scarano,Fabio Rubio; Silva,José Maria Cardoso da; Guimarães,André Loubet; Raik,Daniela; Boltz,Frederick. Rio +20, or the United Nations Conference for Sustainable Development, will take place at the end of this month of June 2012. In this paper, our central argument is that Brazil, as the host of Rio+20, has a historic opportunity to make the conference a success and take a decisive step in becoming a world leader in the shift from the traditional development paradigm to a new, sustainable development paradigm. To do that, Brazil will have to resolve a paradox: on the one hand the country has modern legislation and world class science, and on the other hand very poor social and environmental decision-making in recent times. In this column, we examine the green economy as a trajectory that leads to sustainable development and describe some pilot experiences at... Tipo: Info:eu-repo/semantics/article Palavras-chave: Green economy; Rio+20; Sustainable development; United Nations Conventions. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000200010 Natural gaps associated with oxidative stress in Willisornis poecilinotus (Aves: Thamnophilidae) in a tropical forest Acta Amazonica Gomes,Andreza de Lourdes Souza; Gonçalves,Andrey Felipe Gomes; Vieira,José Luiz Fernandes; Marceliano,Maria Luiza Videiro; Silva,José Maria Cardoso da. Natural disturbances in tropical forests modify the availability and quality of resources and alter the patterns of bird distribution. These environmental changes increase the metabolic rate and disrupt the redox balance promoting oxidative stress. This study aimed to compare the abundance of Willisornis poecilinotus between gaps and the understory of a forest with undisturbed canopy at Caxiuanã National Forest. The abundance was correlated with vegetation heights. The oxidative stress and the stress promoting factors were determined in both sites of sampling. We captured 81 specimens of W. poecilinotus. The number of captures was high in gaps. The specimens sampled at gaps showed high levels of oxidative stress. The biomarkers of oxidative stress were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidants; Environmental disturbances; Redox balance; Lipid peroxidation. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000200006 Registros recuperados: 3 Primeira ... 1 ... Última

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