Consulta: creatorFacets:"Alves,Marcelo Corrêa"
Registros recuperados: 3
Data/hora: 13/06/2024 04:54:50

Environmental impact of the Brazilian Agrarian Reform process from 1985 to 2001
Provedor de dados: 63
Autores: van de Steeg,Jeannette Antoinette; Sparovek,Gerd; Ranieri,Simone Beatriz Lima; Maule,Rodrigo Fernando; Cooper,Miguel; Dourado Neto,Durval; Alves,Marcelo Corrêa.
During the past 20 years, most settlements of the Brazilian Agrarian Reform (AR) have been established in or near better-preserved natural ecosystems, where environmental impact is likely to be negative and contribute to natural resources degradation. The objective of this work is providing a first, comprehensive insight of the impacts related to the environmental quality of these settlements, based on the primary survey of 4,340 AR settlements installed between 1985 and 2001. An index was calculated to integrate different aspects of environmental impacts in one single number. The index showed significant regional variation, with lower values (low environmental quality) for the North and Northeast of Brazil, intermediate values for the Central-west and...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Brazil; Deforestation; Environmental index.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000200010

Does crotalaria (Crotalaria breviflora) or pumpkin (Cucurbita moschata) inter-row cultivation in restoration plantings control invasive grasses?
Provedor de dados: 63
Autores: César,Ricardo Gomes; Brancalion,Pedro Henrique Santin; Rodrigues,Ricardo Ribeiro; Oliveira,Aretha Medina dos Santos; Alves,Marcelo Corrêa.
Alternative methods to control invasive fodder grasses are necessary to reduce the use of herbicides in forest restoration, which has been carried out primarily in riparian zones. We sought to investigate if inter-row cultivation of crotalaria (Crotalaria breviflora DC) or pumpkin (Cucurbita moschata Duschene ex. Poir) with native tree species is an efficient strategy to control invasive fodder grasses in restoration plantings. We tested five treatments in a randomized block design, namely (1) control of brachiaria grass (Urochloa decumbens (Stapf.) Webster) with glyphosate in the implementation and post-planting grass control of the reforestation, (2 and 3) glyphosate use in the implementation and inter-row sowing of crotalaria (2) or pumpkin (3), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest restoration; Green manuring; Inter-row cultivation; Native species reforestation; Grass control.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000400008

Biometria de frutos e diásporos de Cryptocarya aschersoniana Mez e Cryptocarya moschata Nees (Lauraceae)
Provedor de dados: 49
Autores: Moraes,Pedro Luís Rodrigues de; Alves,Marcelo Corrêa.
Apresentam-se os dados da biometria de frutos e diásporos de Cryptocarya aschersoniana Mez e C. moschata Nees (Lauraceae). Os frutos foram coletados de 12 populações de sete localidades diferentes do sudeste brasileiro. Utilizando-se a regressão logística e a análise de função linear discriminante, as espécies foram classificadas de acordo com as equações geradas por essas técnicas. Para os frutos, as variáveis comprimento, diâmetro, superfície e volume foram selecionadas e apresentaram 94,4% de concordância entre as associações de probabilidades esperadas e observadas. Similarmente, as variáveis comprimento, diâmetro, superfície e volume de diásporos foram selecionadas e apresentaram 88,0% de concordância. Realizou-se análise de agrupamento. Observou-se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biometria; Alometria; Tamanho de frutos; Forma de frutos; Regressão de eixo maior; Agrupamento.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000100005