Leucena - uma arborea de uso múltiplo, para a região semi-árida do Nordeste brasileiro.

Produção e características das sementes; Semeadura; Plantio no campo

Licuri Syagrus coronata (Mart.) Becc.

Taxonomia; características da planta; distribuição geográfica; fisiologia do licuri. propagação e produtividade. potencial e importância econômica.bitstream/CPATSA/36697/1/SDC199.pd

Foliar analysis of species of the genus Prosopis in the Brazilian semi-arid region.

This paper presents foliar nutrient concentrations in species of the genus Prosopis, as well as a regression equation for productivity as a function of nutrient content

Leucena (Leucaena leucocephala): leguminosa de uso múltiplo para o Semiárido brasileiro.

bitstream/item/28781/1/Drumond-2010.pd

As abelhas e a produção de sementes do amendoim forrageiro.

O estudo realizado no campo experimental da Embrapa Acre teve como objetivo principal investigar o papel dos insetos, em particular, das abelhas, na polinização e produção de sementes do amendoim forrageiro no Município de Rio Branco, AC.bitstream/item/107463/1/abelhas-e-sementes.pd

Inter ENSO variability and its influence over the South American monsoon system

Previous studies have discussed the interannual variability of a meridional seesaw of dry and wet conditions over South America (SA) associated to the modulation of the South Atlantic Convergence Zone (SACZ). However, they did not explore if the variability inter ENSO (El Ni&#241;o Southern Oscillation) can be related to the phase changes of this dipole. To answer this question, an observational work was carried out to explore the atmospheric and Sea Surface Temperature (SST) conditions related to the same ENSO signal and to opposite dipole phases. <P style=&quot;line-height: 20px;&quot;> Rotated Empirical Orthogonal Function (REOF) analysis was applied over normalized Chen precipitation seasonal anomalies in order to find the dipole mode in the Austral Summer (December to February). The fourth rotated mode, explaining 6.6% of the total variance, consists of positive loading over the SACZ region and negative loading over northern Argentina. Extreme events were selected and enhanced activity of SACZ during the Summer season (SACZ+) was identified in nine years: five during La Ni&#241;a events (LN) and two in El Ni&#241;o episodes (EN). On the other hand, inhibited manifestations of this system (SACZ-) were identified in seven years: four in EN and two during LN. <P style=&quot;line-height: 20px;&quot;> Power spectrum analysis indicated that the interannual variability of the precipitation dipole seems to be related to the low frequency and to the quasi-biennial part of ENSO variability. The ENSO events with the same signal can present opposite phases for the dipole. The results suggest that the displacement of the convection over Indonesia and western Pacific can play an important role to modulate the seesaw pattern