Deposição e decomposição de serapilheira em um remanescente de caatinga no município de Cajazeirinhas, PB.

Abstract

The litter production is the main organic material transfer mechanism and mineral elements of vegetation to the soil surface. This study aimed to characterize the deposition and litter decomposition in a caatinga remaining in the city of Cajazeirinhas, PB, through measurements of production and decomposition of leaf litter during the period from August 2012 to June 2013 were marked tour transects in which it was made all the evaluations. For the production of litter were distributed 36 collection boxes of Im x Im, with monthly collected and deposited the material separated into the following ftactions: leaves, twigs, reproductive structures and miscellaneous. Being 1 8 collection boxes in the preserved área and 18 in the deforested área. The litter decomposition rate was determined with the use of nylon baús(litter baga) each containing previously dried burlap 20g. Data on biomass produçtion and nutrient accumulation of the species studied were submitted to variante analysis, evaluating the differences between the average by 5% Tukey test. The variability of data on constant decomposítion was indicated by the standard errar of each medium. The software used for the analysis was the SISVAR-Esal (FERREIRA, 2003). The split leaves are presented as prevalent in burlap retumed to the soir. The deposition and decomposition of litter varied during the months measured against the distribution of rainfall therefore interfere with physiological mechanisms of species of savanna.