Results 11 to 20 of about 864,950 (233)
The origin and evolution of air sacs in pterosaurs and their forerunners. [PDF]
Pneumatized pterosauromorph vertebrae and their phylogenetic context. Abstract Although the existence of postcranial pneumaticity and the inferred presence of air sacs connected to the lungs are well established in Pterosauria, the origin of this system in pterosaurs remains unclear. We investigated skeletal pneumaticity in the Triassic pterosauromorph
Aureliano T +4 more
europepmc +2 more sources
MANEJO COMUNITÁRIO DE RECURSOS NATURAIS: UMA REVISÃO DE LITERATURA
A ascensão do modelo mercadológico baseado no acúmulo de capital, e na exploração dos recursos naturais de forma não sustentável, tem provocado mudanças significativas na vida dos povos tradicionais, indígenas, quilombolas e pequenos agricultores ...
Francisco Igo Leite Soares +2 more
semanticscholar +1 more source
Location, temporal tendency between 2003 e 2018 and relationship with deforestation
In Amazon, the areas known as "Arc of deforestation" concentrate much of the Brazilian wildfires. The deforestation and forest degradation by fires are two of the processess that cause most of Brazilian greenhouse gas emissions.
Rossano Marchetti Ramos +3 more
doaj +3 more sources
A análise das características da paisagem é o primeiro passo para o planejamento e a gestão adequada dos recursos naturais. Em face ao exposto, o presente trabalho tem como objetivo fornecer informações sobre as características da paisagem na microbacia ...
M. M. Lima +7 more
semanticscholar +1 more source
In the semi-arid region of Northeast Brazil, water salinity is one of the main abiotic factors limiting crop growth and development. However, given the water scarcity affecting this region, the use of waters with moderate to high salt contents becomes ...
Geovani Soares de Lima +6 more
doaj +3 more sources
Growth and production of sunflower as a function of cationic nature of the water and nitrogen
In the Brazilian semi-arid region, it is common to find water with high concentration of salts and with variation in its cationic nature. Thus, we aimed to evaluate the growth and production components of sunflower, cv.
José Raimundo de Sousa Júnior +6 more
doaj +3 more sources
The most highly recommended oils for the diet are those which are rich in unsaturated fatty acids. However, the presence of these components in the oils is related to oxidation, which can be determined by the induction period.
A. F.N. Volpini-Klein +6 more
doaj +1 more source
As terras indígenas brasileiras formam o maior mosaico de áreas protegidas do país, sendo fundamentais para a conservação ambiental. Apesar disso, nem sempre foram alvo dos programas governamentais relacionados aos incêndios florestais.
Rodrigo de Moraes Falleiro +6 more
doaj +1 more source
Avaliação do manejo tradicional do fogo no cerrado brasileiro
O fogo é um componente natural dos ecossistemas e foi muito utilizado pelas populações autóctones no manejo das savanas tropicais. Entretanto, nas últimas décadas, políticas públicas direcionadas à exclusão do fogo reprimiram o uso de queimadas e o ...
Rodrigo de Moraes Falleiro +3 more
doaj +3 more sources
This paper aims to assess the status of the threatened Balearic shearwater Puffinus mauretanicus along the Galician coast (NW Iberian Peninsula) by studying its movements and numbers.
Jorge Mouriño +4 more
doaj +1 more source

