Results 121 to 130 of about 172,996 (312)

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

Extrativismo vegetal ou plantio: qual a opção para a Amazônia? [PDF]

open access: yes, 2020
O crescimento do mercado de produtos extrativos tem conduzido a domesticação de plantas e a descoberta de substitutos sintéticos. Outras variáveis como o crescimento populacional, a mudança nos preços relativos, a baixa produtividade da terra e da mão de
HOMMA, A. K. O.
core  

The (Im)possibilities of Repopulation: How Supply‐Side Factors Hinder the Revitalisation of Vacant Houses in Rural Mountain Regions

open access: yesThe Geographical Journal, EarlyView.
Short Abstract Industrialisation has reshaped European rural areas, leading to both depopulation and, in some cases, lifestyle‐driven repopulation. Our research highlights supply‐side barriers to Alpine repopulation by unpacking the impossibilities of vacant farmhouses revitalisation. Both land transfer traditions ingrained over generation (micro‐level
Bernhard Grüner, Elisabeth Gruber
wiley   +1 more source

Fine‐scale patterns of genetic structure in three species of forest birds reveal dynamic Pleistocene history within an Amazonian interfluve

open access: yesIbis, EarlyView.
Phylogeographical studies of Amazonian birds have revealed large intraspecific diversity, even within recognized areas of endemism. To understand the origin and organization of Amazonian diversity, including the influence of current and historical landscapes, we need to evaluate fine‐scale patterns of genetic diversity in relation to detailed ...
Affonso Henrique Nascimento de Souza   +4 more
wiley   +1 more source

Desenvolvimento vegetativo e reprodutivo em gladíolo Vegetative and reproductive development in gladiolus

open access: yesCiência Rural, 2012
A caracterização das etapas ou fases do ciclo de desenvolvimento das culturas agrícolas é importante para realização de práticas de manejo e, para o gladíolo, essas etapas ainda não foram bem caracterizadas em cultivos a campo no Rio Grande do Sul. Este trabalho teve como objetivo determinar a duração das fases vegetativa e reprodutiva do ciclo de ...
Nereu Augusto Streck   +5 more
openaire   +1 more source

Resumos apresentados. [PDF]

open access: yes, 2011
bitstream/CPAC-2009/27819/1/doc_152.pdfEditores: Evie dos Santos de Sousa, Fábio Gelape ...
ENCONTRO DE JOVENS TALENTOS DA EMBRAPA CERRADOS, 2., 2006, Planaltina, DF.
core   +2 more sources

Seasonal dynamics in terrestrial insect communities after the impact of the Brumadinho tailings dam disaster

open access: yesInsect Conservation and Diversity, EarlyView.
Despite severe habitat loss, insect species richness, seasonal fluctuations in richness and temporal β‐diversity did not differ significantly among forests adjacent to the mudflow and reference sites. We found higher wet‐season species richness for ants, bees, butterflies and dung beetles, while termites showed no seasonal change; β‐diversity was ...
Frederico Neves   +11 more
wiley   +1 more source

Estimativa do plastocrono em meloeiro (Cucumis melo L.) cultivado em estufa plástica em diferentes épocas do ano

open access: yesCiência Rural, 2005
O meloeiro (Cucumis melo L.) é uma hortaliça de alto valor econômico. A emissão de nós é um componente importante em modelos matemáticos de simulação do crescimento e desenvolvimento de culturas de hábito de crescimento decumbente como o meloeiro e ...
Streck Nereu Augusto   +6 more
doaj  

Efeitos de reguladores vegetais aplicados em diferentes estágios de desenvolvimento do feijoeiro comum. [PDF]

open access: yes, 2013
Este trabalho teve como objetivo avaliar a influência dos fitohormônios: do produto comercial Stimulate, no desenvolvimento e produtividade do ...
CARVALHO, A. B. A.   +5 more
core  

Impacts of land use change on diaspore‐dispersing ant assemblages in southwestern Amazonia

open access: yesInsect Conservation and Diversity, EarlyView.
Land use changes shift ant assemblages, more intensive land uses are dominated by generalist and open habitat specialist species engaging in group foraging. The diaspore removal rates cannot differ, but the quality of dispersal was lower in disturbed habitats.
Dhâmyla Bruna de Souza Dutra   +6 more
wiley   +1 more source

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