Results 81 to 90 of about 57,027 (238)

The Landless Rural Workers Movement (MST) and New Agrarian Questions in Brazil

open access: yesJournal of Agrarian Change, EarlyView.
ABSTRACT The Landless Rural Workers Movement of Brazil (MST) primarily organized occupations of large‐scale farms, forcing the redistribution of land for creation of agrarian reform settlements. In the past 20 years, however, land occupations and the establishment of new agrarian reform settlements have consistently declined, while the MST shifted ...
Estevan Coca, Gustavo de L. T. Oliveira
wiley   +1 more source

Molecular phylogenetic analysis sheds light on the diversity and evolutionary history of the Neotropical and African Triplophyllum (Tectariaceae)

open access: yesJournal of Systematics and Evolution, EarlyView.
We used a molecular approach to resolve the evolutionary lineages of Neotropical Triplophyllum, uncovering that current species circumscriptions are hindered by high morphological homoplasy in indument characters. Our results support the recognition of three new species and provide a necessary neotypification for T.
Mauricio Gonçalves Nunes   +6 more
wiley   +1 more source

Aspectos populacionais de Araucaria angustifolia em paisagem de campo e de floresta [PDF]

open access: yes, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-Graduação em Ecologia, Florianópolis, 2013.A Mata Atlântica continua sendo substituída por outros usos do solo.
Paludo, Giovani Festa
core  

Plasmodium falciparum Parasites With Histidine‐Rich Protein 2 (pfhrp2) and pfhrp3 Gene Deletions in Frontier Endemic Regions of Brazilian Amazon

open access: yesTropical Medicine &International Health, EarlyView.
ABSTRACT Studies reporting deletions of the pfhrp2 and pfhrp3 genes in P. falciparum populations in various malaria‐endemic countries, including countries bordering Brazil, are increasing. Individuals infected with P. falciparum carrying deletions of the pfhrp2/3 genes may yield false‐negative results in Rapid Diagnostic Tests (RDTs) based on the ...
Jéssica de Oliveira Bonsanto Gonçalves   +9 more
wiley   +1 more source

Modelos volumétricos para florestas secundárias do litoral de Santa Catarina [PDF]

open access: yes, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Recursos Genéticos Vegetais, Florianópolis, 2015.Objetivou-se com o presente trabalho a obtenção de estimadores de volume de ...
Correia, Jean
core  

Relação da vegetação de caatinga com a condição geomorfométrica local Relationship between Caatinga vegetation and the local geomorphometric condition

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2010
Objetivou-se, com o presente trabalho, avaliar o potencial das variáveis geomorfométricas extraídas de dados SRTM (Shuttle Radar Topographic Mission) para identificação de tipos vegetacionais da Reserva Particular do Patrimônio Natural de Serra das Almas,
Polyanna da C. Bispo   +2 more
doaj   +1 more source

Impacto de Guadua paraguayana sobre remanescente de Floresta Ombrófila Mista Aluvial: uma abordagem biogeoquímica. [PDF]

open access: yes, 2012
Guadua paraguayana Döll, a particularly aggressive native bamboo from the southern portion of South America, is invading permanent preservation areas located in the second plateau of Parana, causing suppression of the current vegetation and modifications
Curcio, Gustavo Ribas   +13 more
core   +1 more source

Microbial biomass and activity in litter during the initial development of pure and mixed plantations of Eucalyptus grandis and Acacia mangium

open access: yesRevista Brasileira de Ciência do Solo, 2013
Studies on microbial activity and biomass in forestry plantations often overlook the role of litter, typically focusing instead on soil nutrient contents to explain plant and microorganism development. However, since the litter is a significant source of
Daniel Bini   +4 more
doaj   +1 more source

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