71 research outputs found
Bee communities (Hymenoptera: Anthophila) of the "Cerrado" ecosystem in Sao Paulo State, Brazil
Five surveys of the bee communities in four "Cerrado" ecosystem reserves in Sao Paulo State were compared for species richness and similarity. These areas are fragment vegetation reser-reserves located in the Cerrado Corumbata Reserve (Corumbata), Jata Ecological Park (Luiz Antonio), Cajuru (Cajuru), and Vassununga State Park - ""Gleba de Cerrado de Pe-de-Gigante"" (Santa Rita do Passa Quatro). The methodology consisted of capturing bees foraging on flowers along transects, though with small differences between surveys. These ""cerrado"" areas have a large number of species of native bees, which are important pollinators in several Brazilian ecosystems. The community of bees varied among these different fragments. Based on 500 individuals (standardized by rarefaction), Cajuru, Corumbata 1 and Corumbata 2 were the areas with highest species richness, and Jata and Pe-de-Gigante had the lowest species richness in the bee communities. The bee faunas of Corumbata 2 and Pe-de-Gigante had the highest similarity, forming a group with the bee fauna of Cajuru. The bee faunas of Corumbata 1 and Jata were isolated from this group. We found that the bee species richness and similarity found in these ""cerrado"" areas cannot be explained by general factors such as the size of the fragment, the species richness of plants and the distance between the areas. Therefore, we suppose that local factors that differ among areas, such as interactions between populations, and competition and interference from surrounding areas influence and determine bee species richness and similarity in these reserves.FAPESP (Funda ao de Amparo a Pesquisa do Estado de Sao Paulo)[00/06405-2]CNP
Residuos vegetais das sucessões de cultivo de soja no verão com milho, braquiária e feijão caupi no outono-inverno.
bitstream/item/136429/1/39-Luan-residuos.pd
Anos de consórcio de milho safrinha com braquiária sobre a produtividade da soja em sucessão.
Atividade fotossintética e produtividade de milho solteiro e consorciado em diferentes populações de plantas de milho verão.
bitstream/item/148222/1/2.-atividade.....pd
Milho safrinha consorciado com brachiaria ruziziensis para manejo de plantas daninhas.
bitstream/item/136407/1/29-Ivan-Milho.pd
Massa de Brachiaria ruziziensis em sucessão a soja, com aplicação de Azospirillum brasiliense em Plantio Direto.
Eficiência da interceptação luminosa de milho em diferentes arranjos de cultivo com e sem braquiária.
Produtividade da soja em sucessão aos cultivos de outono-inverno, em Dourados, MS.
bitstream/item/148579/1/36-produtividade-da-soja-em....pd
Produtividade de milho safrinha consorciado com populações de braquiária em espaçamento reduzido e modificado.
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