Diversidade de ácaros e colêmbolos em diferentes estações e usos do solo em Cerro Largo - RS

Abstract

Due to the importance of the mesofauna for the balance and functioning of the agroecosystem, this study evaluated the influence of no-tillage, conventional tillage, fallow area and native forest on the mesofauna. The study was carried out in the experimental area of the Universidade Federal da Fronteira Sul - UFFS, campus Cerro Largo / RS. The mesofauna was collected through a Provid trap, with two collection seasons, one in the winter season and another in the spring. At the time of installation of the traps, soil samples were collected to determine soil moisture. The green matter of the aerial part of the plants and litter was collected and placed in a drying oven at 65 ° C for five days. It was verified the correlation of the collo- buds with the dry mass of the aerial part and the humidity. In the winter period the mesofauna presented lower abundance compared to spring. The native forest has a lower population of collo- buds in the two seasons compared to the other treatments. It is inferred that there is a lower population of clingbirds in the native forest due to the greater presence of mites. Other treatments such as no-tillage, conventional tillage and fallow did not have a statistical difference in the population of collo- men and mites among them.