Contribution of Litter and Leaf Decomposition of Byrsonima gardneriana

Abstract

The litter in tropical ecosystems is one of the compartments responsible for the transference of nutrients to the soil, having great importance for the conservation and maintenance of biodiversity. Thus, this study aimed to quantify the contribution and stock of litter and the leaf decomposition rate of Gardneriana byrsonima A. Juss (murici) in two areas of Caatinga, semiarid region of Alagoas State. Litter production was measured monthly from March of 2012 to February of 2013. The litter decomposition rate and the remaining leaf mass of the murici were also calculated and analyzed for its material chemically. The leaf decomposition was measured in litter bags and the material was chemically analyzed. In the area of Olho D' Água Casado, the litter produced was over Delmiro Gouveia. The leaf fraction contributed to the higher percentage in the litter training in both areas. The leaf material showed slow decomposition to high levels of lignin, cellulose, hemicellulose, and high C:N ratio.

Fitossociologia e propriedades físicas da liteira em um ecossistema sucessional alterado pela agricultura itinerante na Amazônia oriental

“…Quanto ao estoque de liteira nos períodos avaliados, observa-se em outros estudos que os maiores acúmulos acontecem durante o período menos chuvoso [34,53], principalmente quando o local de estudo apresenta estações climáticas bem definidas. No entanto, esta justificativa não é plausível para a Amazônia, pois o bioma apresenta um clima atípico das outras regiões, com um período de intensa precipitação pluviométrica e outro de menor intensidade (Figura 1).…”

Forage availability and weight gain of goats on caatinga enriched with Urochloa trichopus (Hochst.) Stapf subjected to fallowing and fertilized with phosphate

“…The Caatinga Biome in the semiarid region of northeastern Brazil is strongly influenced by the hot, dry climate (BSh'w), characterized by high temperatures (over 30ºC), average relative humidity of 61% and average rainfall of 500 mm/year, distributed in the short rainy season (1,2) . The vegetation in this region is characterized by the predominance of a shrub-tree layer composed of plants with low carrying capacity, resulting in low animal yield (3) . Despite this, it constitutes the basic forage support of most properties dedicated to livestock production in this region.…”