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Nutrient-use efficiency of Eucalyptus genotypes grown in Luvisol
Santos,Kristiana Fiorentin dos; Queiroz,Túlio Barroso; Ludvichak,Aline Aparecida; Momolli,Dione Richer; Garlet,Claudinei; Schumacher,Mauro ValdirAbstract Superior productivity of genotypes in forest plantations depends on the supply, capture and use-efficiency of resources. In this context, knowledge regarding the nutritional efficiency of Eucalyptus influences farmers and researchers in decision-making and in the management of forest ecosystems. The aim of this research was to estimate nutrient-use efficiency in Eucalyptus genotypes planted in the stat...
Removal of nutrients due to biomass harvest of Eucalyptus urograndis in differe...
Salvador,Simone Martini; Ludvichak,Aline Aparecida; Momolli,Dione Richer; Santos,Kristiana Fiorentin dos; Consensa,Catarine BarcellosAbstract Intensive management of forest stands can increase biomass production, as well as increase the removal of nutrients from the site. This study therefore sought to simulate different harvest intensities and to calculate the nutrient-use efficiency of Eucalyptus urograndis in different types of soil. The study was carried out in a plantation of seven-year-old hybrid E. urograndis in the city of Telêmaco B...
Partial exclusion of precipitation: throughfall, stemflow and canopy intercepti...
Poleto,Gian Carlos; Momolli,Dione Richer; Schumacher,Mauro Valdir; Ludvichak,Aline Aparecida; Santos,Kristiana Fiorentin dos; Stahl,JamesAbstract Hydrological behavior in reforested watersheds is different from that under other forms of cover. The variation may be related to aspects intrinsic to species, planting density, physiological maturity, management system and climatic conditions. Periodically, climatic anomalies such as the case of La Ninã are observed, and these are responsible for the alteration of the rainfall regime and consequently ...
Interaction of precipitation with tree canopy increases nutrient input
Poleto,Gian Carlos; Momolli,Dione Richer; Schumacher,Mauro Valdir; Ludvichak,Aline Aparecida; Santos,Kristiana Fiorentin dos; Viera,MárcioAbstract Given that atmospheric deposition is the first source of nutrient input into forest ecosystems, and that the precipitation partition serves as a nutritional source mainly when there is an interaction with the forest canopy, the objective of the present study was to quantify the nutrients input into rainfall, throughfall and stemflow in Eucalyptus urophylla stands with partial exclusion (E) and without ...
Seasonal variation of atmospheric nutrient deposition in the western part of Ri...
Momolli,Dione Richer; Souza,Huan Pablo de; Schumacher,Mauro Valdir; Ludvichak,Aline Aparecida; Guimarães,Claudiney do Couto; Malheiros,Angélica CostaAbstract The chemical composition of rainfall is influenced by natural or anthropogenic factors; the amount of nutrients deposited is increased by the amount of rainfall. This work sought to estimate the amount of nutrients deposited by precipitation in the Pampa biome, the seasonal variation of the chemical composition of rain water, and the origin of nutrients found in the water. Precipitation collectors were...
Litter Accumulation in a Eucalyptus grandis Plantation, Rio Grande do Sul, Brazil
Santos,Fernanda Dias dos; Fantinel,Roberta Aparecida; Andrzejewski,Camila; Santos,Elke Lima dos; Machado,Dayanna do Nascimento; Schumacher,Mauro ValdirAbstract This study aimed at quantifying the accumulation of litter in formative compartments (bark, branches, leaves, and miscellaneous) above the soil in a 23-year-old Eucalyptus grandis plantation, located on the campus of the Universidade Federal de Santa Maria, Rio Grande do Sul. We installed four parallel plots on the settlement lines, measuring 3.0 m × 6.0 m. In order for litter collection, we utilized a...
Litterfall in the Semideciduous Seasonal Forest in Southern Brazil
Dick,Grasiele; Schumacher,Mauro ValdirAbstract Litterfall and nutrient cycling are essential processes for the forest diversity and productivity maintenance. This study aims to characterize the litterfall and evaluate if it has correlations with climatic variables in the Semideciduous Seasonal Forest on advanced succession stage, in Southern Brazil. During the 2007-2010 period, the litterfall was collected every month, sorted into leaves, twigs, an...
Manejo da biomassa e sustentabilidade nutricional em povoamentos de Eucalyptus ...
Schumacher,Mauro Valdir; Witschoreck,Rudi; Calil,Francine Neves; Lopes,Vicente GuilhermeResumo O estudo foi realizado com o objetivo de subsidiar práticas de manejo nutricional de povoamentos de Eucalyptus spp. em pequenas propriedades rurais no estado do Rio Grande do Sul. Foram avaliados povoamentos de 2, 4, 6 e 8 anos de idade, com amostragem de 24 árvores e determinação da biomassa e nutrientes nos componentes: folha, galho vivo, galho morto, madeira e casca do tronco e raiz. Também foi estima...
Alocação de nutrientes ao longo do tronco em Pinus taeda L. aos 17 anos de idade
Witschoreck,Rudi; Schumacher,Mauro ValdirResumo Este trabalho, realizado em um povoamento de Pinus taeda de 17 anos de idade no município de Cambará do Sul - RS, em Cambissolo Húmico alumínico típico, teve por objetivo estudar o padrão de alocação dos nutrientes ao longo do tronco e suas implicações para a amostragem na estimativa do estoque de nutrientes. Foram amostradas 18 árvores, distribuídas em 6 classes diamétricas, com coleta de amostras, de c...
Vegetation Burning in Pampa Biome Altered the Chemical Composition of Rainfall
Dick,Grasiele; Schumacher,Mauro ValdirABSTRACT Rainfall is one of the primary nutrient inputs to vegetation and its chemical composition is dependent on air quality as falling rain scavenges gaseous and particulate emissions from natural, industrial, and agricultural activities. The objective of this study was to evaluate whether the vegetation burn in a region of the Pampa biome influences the pH and chemical composition (anions) in incident rainf...