Alterações quali-quantitativas na comunidade meiofauna em alternância de período chuvoso e seco na região do Curimataú paraibano.

Abstract

The climate directly influences the dynamics of the environment, being a conditioning element in several aspects, in physical and biological processes, as well as in society in general, since it constitutes an essential resource for life and human activities. The aim of this research is to evaluate and compare how the drought process in the region resulted in qualitative and quantitative impacts on the structural composition and diversity of the meiofaunistic community in the Curimataú region of Paraíba. The data represent a timeline of the last 10 years, about rainfall indixes of the cities where the reservoirs are located: Cairana, Soledade, Cacimba da Várzea and Lagoa da Serra. For a better analysis of the meiofaunistic community behavior, was used data from the studies by Lucena (2015) and Silva (2018). These studies were done in the reservoirs prospected in 2020 and, thus, allow a qualitative and quantitative analysis regarding the taxa meiofaunistic found. During the research, 12 taxa of meiofaunistic organisms were added. It is concluded that the organization of the community was different, when compared to other studies of limnic ecosystems, with the presence of the phylum Gastrotricha, never before seen in the region in such abundance. The dominance of the taxa was distributed by Nematoda, Rotífera and Gastrotricha, where in all the regions of Curimataú studied, the supremacy was the phylum Nematoda.