Identificação e avaliação das comunidades de formigas em floresta secundária na Amazônia oriental.

Abstract

The objective of this work was it of valuing the communities of ants, in plots fertilized with nitrogen and match in an area of secondary forest in the Oriental Amazon region. The respective study was carried out in the Farm Victory located to 6,5 km to Northwest of city of Paragominas in the State of the Pará. The collections took place during the April and September of 2004, when are used traps type Winkler. there was appreciated the fauna found through the rates of Jaccard, of Shannon-Wiener and rate of Equality and Wealth.. There were obtained in two collections of ants a total of 4893 individuals distributed in 3 subfamilies, 22 types and 82 sorts. The most frequent sorts were a Wasmannia auropunctata (100 %), Pyramica sp1 and Solenopsis sp1 (75 %). The rate of diversity of Shannon pointed to low values, the rate of Jaccard presented inequality in the rate of Equality checked that the distribution of the abundance of the individuals was not homogeneous and the Wealth of sorts also presented low values. It was ended that there was variation in the composition of the fauna of ants in the fertilized environments. We can attribute this fact to the growth of the vegetation as a result of the fecundation with N, N P and P. The accumulation of nutritious ones can be an important factor for structuring of the community of ants. The study corroborates with other inquiries in degraded areas, showing that the composition of sorts is modified when compared with more complex environments.