Diversity of epiedaphic fauna in long-term integrated croplivestock systems in the cerrado region.

ABSTRACT The epi-edaphic macrofauna are important for soil functioning and their populations are sensitive to soil management. In this study, the effect of integrated and continuous cropping systems on the edaphic macrofauna was evaluated in a long-term experiment at Embrapa Cerrados in Planaltina-DF, Brazil. Sampling took place in the wet and dry seasons of 2019, using pitfall traps in nine treatments with two replicates, including croplivestock integration with or without cover crops and with minimum cultivation or no-tillage; continuous pasture of pure grass or intercropped with legumes; continuous tillage with and without cover crops; and a fragment of native Cerrado vegetation. A strong seasonality was observed, with 56 indicator macrofauna morphospecies in the rainy season and 38 in the dry season. Integrated systems in the cropping phase had greater dominance of some groups of fauna, such as ants, beetles and moth catterpillars, leading to lower Shannon diversity values. No-tillage, integrated systems with cover-crops and the native Cerrado had the highest morpho-species richness, showing potential as repositories of local epi-edaphic macroinvertebrate biodiversity

Semeadura Cruzada, Fileiras Duplas e Espaçamento Reduzido: Capão do Leão/RS - Safras 2013/2014 e 2014/2015.

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Junge Wissenschaft : Jugend forscht in Natur und Technik

In the present research, we studied wines from three different south Brazilian winemaking regions with the purpose of differentiating them by geographical origin of the grapes. Brazil`s wide territory and climate diversity allow grape cultivation and winemaking in many regions of different and unique characteristics. The wine grape cultivation for winemaking concentrates in the South Region, mainly in the Serra GaA(0)cha, the mountain area of the state of Rio Grande do Sul, which is responsible for 90% of the domestic wine production. However, in recent years, two new production regions have developed: the Campanha, the plains to the south and the Serra do Sudeste, the hills to the southeast of the state. Analysis of isotopic ratios of (18)O/(16)O of wine water, (13)C/(12)C of ethanol, and of minerals were used to characterize wines from different regions. The isotope analysis of delta(18)O of wine water and minerals Mg and Rb were the most efficient to differentiate the regions. By using isotope and mineral analysis, and discrimination analysis, it was possible to classify the wines from south Brazil