A VANTAGEM DOMÉSTICA EM TRÊS ECOSSISTEMAS NO MUNICÍPIO DE IRATI - PARANÁ

Abstract

The aim of the present study was evaluate the effect of different ecosystems in the autochthonous and allochthonous percentage of litter remaining and litter decomposition rates (Home Field Advantage Theory). To verify if the soil's respiration and soil proprieties fluctuate according the forest area. Also spacialize the soil's respiration in Geographic Information System environments. In order to achieve that, three areas were selected: one plantation of Pinus taeda, Eucalyptus dunnii and remaining of Mixed Ombrophilous Forest, all in the Irati city, belonging to the Emílio B. Gomes & Filhos S/A company. Soil samples were taken in order to conclude the soil basal respiration and so that the numerical terrain model could be elaborated. In order to test the Home Field Advantage Theory, 288 litterfall bags were placed in each area, containing 12 grams of litter recently deposited and air-dried. Evaluating the macrofauna, 144 litterbags with 1mm mesh and 144 open litterbags with 5mm where installed in the study region. The litterbags contained leaf litter emanating from the site itself and from the remaining areas. The results proved that the soil proprieties and the soil's respiration (F(2, 9) = 6,087 e p = 0,0213) would swing considerably in line with the forest area. After 270 days of study it was noticed that the micro and macrofauna indeed interfere in the decomposition process (F(18;:81): 24,991, p<0,01; F(18;:115): 18,986, p<0,01) and finally that exists high affinity between each area's macrofauna and produced phytomass.