Results 101 to 110 of about 50,712 (136)

Impacts of Deforestation‐Driven Rainfall Reductions on Amazonia Forest Stability

open access: yesGeophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The stability of Amazonian vegetation is strongly influenced by land–atmosphere feedbacks. It has been hypothesized that deforestation‐induced precipitation decline may lead to widespread forest decline across the entire basin. Using a moisture‐tracking model, we quantify how deforestation across South America alters downwind rainfall and ...
Luís Gustavo Cattelan   +9 more
wiley   +1 more source

A EDUCAÇÃO ESPECIAL NO MARANHÃO: apontamentos históricos

open access: yes, 2017
Debate sobre a trajetória da Educação Especial no Estado do Maranhão, enfocando a institucionalização da área no órgão governamental responsável pela educação, das primeiras iniciativas ao ano de 2002.
Bonfim, Maria Núbia Barbosa   +3 more
core   +1 more source

Integrated Orbitrap‐HRMS and Chemometric Profiling Reveals Metabolite Diversity and Antioxidant Signatures in Cerrado Eugenia Fruits

open access: yesAnalytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT Fruits from the Brazilian Cerrado, such as pitanga (Eugenia uniflora), jambolao (E. jambolana) and murta (E. punicifolia), are recognized for their nutritional and therapeutic potential, largely due to their phenolic‐rich profiles. However, systematic studies integrating high‐resolution mass spectrometry (HRMS) with chemometric tools to ...
Alexandre W. V. Nascimento   +8 more
wiley   +1 more source

PATRIMONIALISMO E POBREZA: aproximações entre estrutura política e realidade social no Maranhão no início do século XXI

open access: yes, 2015
Este artigo pretende estabelecer uma aproximação conceitual entre a estrutura política no  Estado  do  Maranhão  e  sua  situação  social.  Para  tanto  nos  valemos  das contribuições de  autores que  contribuíram para  compreender  a  formação do ...
Bezerra, Bruno Rogens Ramos
core   +1 more source

Phylogeny of the Electric Rays of the Family Narcinidae (Gill, 1862): Systematic Review and Evidence of the Dispersal Routes to America

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.
ABSTRACT The family Narcinidae has a cosmopolitan distribution; however, its systematic composition and phylogenetic position within Torpediniformes remain poorly understood. This study evaluates the evolutionary and biogeographic history of the family Narcinidae and investigates its distribution patterns using molecular systematics.
Luis Fernando da Silva Rodrigues‐Filho   +7 more
wiley   +1 more source

Operação historiográfica: desafios, problemática e avanços na produção científica acerca dos suicídios dos negros escravizados no Maranhão oitocentista [PDF]

open access: yes, 2018
As pesquisas relacionadas à experiência de negros escravizados no Brasil têm avançado na perspectiva de realçar a subjetividade destes agentes históricos dentro das dinâmicas sociais no sistema escravocrata brasileiro.
Ferreira, Carlos Victor de Sousa
core  

Natives Against Invaders: Shared Use of Space and Temporal Segregation of Clouded Tiger‐Cats (Leopardus pardinoides) and Domestic Dogs (Canis familiaris) in an Isolated Protected Area

open access: yesEcology and Evolution, Volume 16, Issue 6, June 2026.
We studied the spatial and temporal relationships between clouded tiger‐cats and dogs in an isolated protected area of Colombia. Dogs influenced the activity patterns of clouded tiger‐cats but not their habitat use. Conservation actions should be directed to mitigate potential contact between both species.
J. C. Cepeda‐Duque   +6 more
wiley   +1 more source

ASPECTOS ECONÓMICOS E SOCIAIS DE ALGUNS PROJETOS DE REFORMA AGRÁRIA NO MARANHÃO E NO CEARÁ

open access: yesCadernos de Estudos Sociais, 1992
Representa uma contribuição à análise das experiências de Reforma Agrária implementadas no país na segunda metade da última década, baseada nos resultados colhidos em pesquisa de campo junto a alguns assentamentos dos Estados do Maranhão e do Ceará ...
Osmil Galindo, Werter Macedo
doaj  

Cerca del Caribe, lejos del Brasil: la construcción política del Estado de Maranhão en los tiempos de la Unión Ibérica (1600-1655)

open access: yesRevista Brasileira do Caribe
El objetivo de este artículo es pensar en el impacto de la Unión Ibérica (1580-1640) en la construcción de la idea de un estado de Maranhão, alejado de Brasil y cercano a las Indias de Castilla.
Alírio Cardoso
doaj   +1 more source

Scheffrahnitermes ubuntu (Isoptera: Apicotermitinae), Description of a New Termite Using a Collaborative Approach to Address the Wallacean Shortfall

open access: yesNew Zealand Journal of Zoology, Volume 53, Issue 2, June 2026.
The study of Neotropical Apicotermitinae remains challenging due to the large number of undescribed taxa (Linnean shortfall) as well as the scarcity of distributional data (Wallacean shortfall). Despite recent efforts to reduce the first one, the second remains an even more significant challenge.
Camila C. Mellado   +10 more
wiley   +1 more source

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