Results 101 to 110 of about 172,786 (278)

Abiotic drivers of co‐occurrence and diversity patterns of Calopterygidae species in Amazonian protected freshwaters

open access: yesEcological Entomology, EarlyView.
Species co‐occurrences rely on their ability to explore similar or distinct available resources, and possible niche overlap can prevent their presence and establishment in a given site Damselflies of the Calopterygidae family demonstrated negative co‐occurrences in streams inside and outside PAs, highlighting that their ecological similarity is ...
Joás Silva Brito   +13 more
wiley   +1 more source

Aplicação de produtos biológicos estimulantes no desenvolvimento vegetal em hortaliças

open access: yes, 2022
The use of stimulating products in the production of vegetables is of great importance for a better establishment of seedlings in the field, a factor directly related to seed germination. The aim of this study was to verify the effects of different biological products stimulating plant development such as Ascophylum nodosum, Ecklonia maxima, Brutal ...
openaire   +1 more source

Where water meets rock: Ecological niches and diversity hotspots of hygropetric beetles in the Neotropics

open access: yesEcological Entomology, EarlyView.
First continental‐scale synthesis of hygropetric beetle diversity and distribution across Neotropical highlands. Climatic and topographic gradients structure regional assemblages and niche overlap. Ecological convergence suggests adaptation to similar conditions across disjunct regions.
Janderson Batista Rodrigues Alencar   +4 more
wiley   +1 more source

Compósitos de resina PU vegetal e fibras vegetais: desenvolvimento e aplicações em design.

open access: yesPensamentos em Design
O artigo apresenta uma investigação de desenvolvimento de materiais compósitos a partir de diferentes fibras vegetais, na sua maioria, residuais, associadas à resina poliuretana a base de óleo de mamona, intencionando a valorização de resíduos como matéria prima, reinserindo-os no ciclo produtivo como alternativa à materiais compósitos tradicionais ...
Marcelo Oliveira   +3 more
openaire   +1 more source

Fluctuating asymmetry in spider‐hunting wasps as a possible indicator of stress in Brazilian Atlantic Forest landscapes Assimetria flutuante em vespas caçadoras de aranhas como possível indicador de estresse em paisagens da Mata Atlântica brasileira

open access: yesEcological Entomology, EarlyView.
Agricultural cover was positively associated with fluctuating asymmetry in Trypoxylon opacum, suggesting a possible increase in developmental instability in intensively managed landscapes. Wing size was positively related to forest cover and negatively related to agricultural cover, indicating that forested landscapes may promote larger body size ...
Luana Vieira Carlin dos Santos   +3 more
wiley   +1 more source

Coberturas vegetais no desenvolvimento vegetativo de plantas de pessegueiro Crop covers in the vegetative development of peach trees

open access: yesRevista Brasileira de Fruticultura, 2007
A utilização de cultivos de cobertura em pomares de pessegueiro no Brasil ainda é pouco difundida, apesar de haver diversas espécies de cobertura vegetal com potencial para tanto.
Leo Rufato   +4 more
doaj   +1 more source

Space, Time and Nature: The process and the myth [PDF]

open access: yes, 2015
The article fits into the debate regarding space, time and nature in dialogue with the world lived by subjects that build up themselves or are built as mythological heroes, source of speech and spacial concrete practices.
Araújo, Maxem Luiz   +3 more
core  

When Similar Individuals Don't Attract: Absence of Assortative Mating by Coloration in a Damselfly With Honest Signaling

open access: yesEthology, EarlyView.
In Acanthagrion lancea damselflies, both sexes display blue ornamentation, but do they choose mates based on it? We tested whether mutual mate choice and time constraints influence ornament evolution. Blue coloration correlated with individual quality, but individuals did not choose mates based on color, and this was unaffected by time constraints over
Maria C. A. Melillo   +3 more
wiley   +1 more source

Respostas dos padrões de sedimentação e hipersalinidade na cobertura vegetal de planície estuarina sob influência da semiaridez

open access: yesGeosul, 2018
Esta pesquisa analisa a influência das variações espaciais da salinidade intersticial e granulometria dos sedimentos na cobertura vegetal do estuário do Rio Apodi-Mossoró (RN).
David Hélio Miranda de Medeiros   +2 more
doaj   +1 more source

Analysis, Design and Implementation of Biodiesel Projects in Brazil [PDF]

open access: yes
During the oil crisis of the seventies, Brazil has developed a successful program for gasoline substitution by ethanol (Proálcool). Nowadays the biomass accounts for 27% of total national energy consumed in Brazil and the ethanol participates with 40% of
da Silva Junior, Aziz Galvao   +2 more
core   +1 more source

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