The aim of this research was to study the flood pulse influence and the anthropic impact caused by bauxite tailings on the chemical composition of O. glumaepatula in Batata lake (PA, Brazil). Sampling was carried out in stands of O. glumaepatula in the low-water, filling, high-water, and drawdown periods in impacted and natural areas of Batata lake. During the low-water and drawdown periods the...

The climate clearly determines the characteristics of agriculture in terms favourable conditions for development plants and animals. Climate change has a major impact on agriculture, we need at least its analysis past decades effective adaptation. annual scale meteorological variables is quite rough, much more information obtained from monthly scale, example when using bioclimatic indices diagr...