Results 71 to 80 of about 172,996 (312)

Floral resource diversity drives spatiotemporal variation in plant–pollinator network structure

Oikos, EarlyView.
Mechanisms underlying community assembly, including those related to species interactions, vary across space and time. Plant–pollinator networks exemplify these dynamics, where link rewiring and turnover mediate adaptations to environmental changes. Bees rely on diverse floral resources (e.g.
Caio S. Ballarin, Felipe W. Amorim, Blanca Arroyo‐ Correa, Pedro Jordano   +3 more
wiley   +1 more source

Temperatura base para emissão de folhas e nós, filocrono e plastocrono das plantas daninhas papuã e corriola Base temperature for leaf and node appearance, phyllochron and plastochron in the weeds Alexander grass and Morning glory

Ciência Rural, 2008
O papuã (Brachiaria plantaginea) e a corriola (Ipomoea triloba) são importantes plantas daninhas de culturas anuais. O filocrono (intervalo de tempo entre o aparecimento de duas folhas sucessivas) e o plastocrono (intervalo de tempo entre o aparecimento ...
Gizelli Moiano de Paula, Nereu Augusto Streck   +1 more
doaj   +1 more source

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

, 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, Arteaga, Pamela Elizabeth Morales, Pantoja, Wallace Wagner Rorigues, Peluso, Marília Luiza   +3 more
core  

Fish loss in tropical coastal ecosystems can jeopardise nutrient supply to traditional fishing communities: A case study from Northeast Brazil

People and Nature, EarlyView.
Abstract Fisheries constitute one of the major benefits that oceans provide for people. Yet anthropogenic pressures and global changes are disrupting coastal systems, eroding marine biodiversity and threatening the food security of traditional populations.
Fabricio C. Albuquerque, Guilherme O. Longo, Luiza S. Waechter, Mariana Bender, Filipe M. França   +4 more
wiley   +1 more source

Estimativa de plastocrono em crambe Estimating the plastochron in crambe

Ciência Rural, 2010
Um parâmetro utilizado em modelos de simulação do desenvolvimento de espécies vegetais é o intervalo de tempo entre o aparecimento de dois nós sucessivos em uma haste, conhecido como plastocrono, com unidade de °C dia nó-1.
Marcos Toebe, Sidinei José Lopes, Lindolfo Storck, Tatiani Reis da Silveira, Marília Milani, Gabriele Casarotto   +5 more
doaj  

Métodos de soma térmica e datas de semeadura na determinação de filocrono de cultivares de trigo Thermal time methods and sowing dates in phyllochron determination in wheat cultivars

Pesquisa Agropecuária Brasileira, 2009
O objetivo deste trabalho foi avaliar o efeito dos métodos de cálculo de graus-dia e de datas de semeadura na determinação do filocrono de cultivares de trigo (Triticum aestivum).
Hamilton Telles Rosa, Lidiane Cristine Walter, Nereu Augusto Streck, Cleber Maus Alberto   +3 more
doaj   +1 more source

Potencial alelopático de cultivos de cobertura vegetal no desenvolvimento de plântulas de milho

Acta Scientiarum. Agronomy, 2005
Cover crop allelopathic potential in the development of corn seedlings. The objective of this work was to verify the allelopathic potential of aqueous extracts of wheat plants, black oat, pearl millet, turnip and rape on the germination of seeds, hypocotyl and radicle length, as well as dry weight of corn seedlings, using concentrations of 0%, 25%, 50%,
Luciene Kazue Tokura, Lúcia Helena Pereira Nóbrega   +1 more
openaire   +2 more sources

Activity schedule and foraging in Protopolybia sedula (Hymenoptera, Vespidae) [PDF]

, 2015
Protopolybia sedula is a social swarming wasp, widely spread throughout many countries in the Americas, including most of Brazil. Despite its distribution, studies of its behavioral ecology are scarce. This study aimed to describe its
Barbosa, Bruno Corrêa, Castro, Mariana Monteiro de, Detoni, Mateus, Mattos, Maria do Carmo, Prezoto, Fabio   +4 more
core  

Synergistic efforts in specimen digitisation, curation and cataloguing of Brazil's megadiverse flora and funga

PLANTS, PEOPLE, PLANET, EarlyView.
The advancement of digital technologies has brought a rapid global information exchange, impacting all areas of our lives. This also applies to science. Knowledge, conservation and scientific innovation on global biodiversity are being strengthened and disseminated at unprecedented scales.
Ana Flávia Alves Versiane, Fabiana Ranzato Filardi, Thuane Bochorny, Paula Leitman, Mariana Taniguchi, Felipe Alves de Oliveira, Luís Alexandre Estevão da Silva, Rafael Oliveira Lima, Domingos Cardoso, Rafaela Campostrini Forzza   +9 more
wiley   +1 more source

Estimativa do filocrono em milho para híbridos com diferentes ciclos de desenvolvimento vegetativo Estimating the phyllocron in maize hybrids with different cycles of vegetative development

Ciência Rural, 2012
O filocrono é definido como o tempo térmico necessário para o aparecimento de folhas sucessivas na haste principal de uma planta. Através do filocrono, pode-se calcular a duração do período vegetativo e, portanto, a época de florescimento em função da ...
Juliano Dalcin Martins, Reimar Carlesso, Mirta Terezinha Petry, Alberto Eduardo Knies, Zanandra Boff de Oliveira, Tiago Broetto   +5 more
doaj   +1 more source