Banca de QUALIFICAÇÃO: GABRIEL HENRIQUE SANTOS SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : GABRIEL HENRIQUE SANTOS SILVA
DATA : 24/09/2019
HORA: 14:00
LOCAL: Anfiteatro dos anfíbios - CB
TÍTULO:

IMPORTANCE OF LITTER DIVERSITY FOR DECOMPOSITION IN A SEASONAL TROPICAL FOREST

 

PALAVRAS-CHAVES:

functinal traits; biodiversity and ecosystem functioning; functional dispersion; soil fertility; macronutrients

PÁGINAS: 23
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

Vegetal detritus decomposition is a key process in nutrient cycling and can be affected by both biotic and abiotic factors. Although many studies have evaluated the effects of litter diversity on its decomposition rate, most works use experimental and short-term approaches. Our aims were, using an observational approach during 3 years, evaluate the different facets effects, against other biotic and abiotic factors, on litter decomposition. For that, we assess, in 41 plots in a restinga forest fragment, the litterfall, soil litter, taxonomic, functional and phylogenetic litter diversity, C:P and C:K ratios and water-holding capacity of litter, in addition to the soil moisture and N, P and K concentrations. Using 4 path analysis (one for each year and one for the average of three years), we found consistence of positive effect of litter taxonomic diversity and water-holding capacity and soil moisture on litter decomposition rate. Results suggest that biotic and abiotic ecosystem components are important to increase decomposition rate, being the more diverse and wet communities more favorable to higher litter decomposition rates.

 

MEMBROS DA BANCA:
Presidente - 1714892 - ADRIANO CALIMAN FERREIRA DA SILVA
Interno - 1837921 - ALEXANDRE FADIGAS DE SOUZA
Interno - 1718346 - EDUARDO MARTINS VENTICINQUE