Banca de QUALIFICAÇÃO: DANIEL FERREIRA DE OLIVEIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : DANIEL FERREIRA DE OLIVEIRA
DATA : 03/11/2022
HORA: 15:00
LOCAL: Sala de aula do PPG-EC
TÍTULO:

DEVELOPMENT OF FORESTS RESTORED BY DIRECT SEEDING OVER NINE YEARS IN THE AMAZON-CERRADO TRANSITION

PALAVRAS-CHAVES:

Ecological restoration, seeding of species, muvuca de sementes, species composition, tropical forest.

PÁGINAS: 48
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
SUBÁREA: Ecologia Aplicada
RESUMO:

The concern with the conservation and recovery of vegetation cover in legal reserve areas and permanent preservation areas is a pressing need in the Amazon and Cerrado biomes. Studies have been developed in search of understanding the models of environmental recovery that catalyze the natural processes of natural regeneration in ecosystems of degraded areas. A promising alternative for areas with low potential for natural regeneration is the muvuca de sementes, term in Portuguese designating direct sewing of a mixture of seeds of different species, a more economically viable technique for forest restoratuion. The muvuca consists of a mixture of seeds of native species with different life cycles and of several successional and functional groups together. Our study aimed to investigate changes in the structure and species composition of areas with different recovery ages through seed muvuca in the Amazon-Cerrado transition. Three areas restored by muvuca with different ages (4, 7 and 9 years) and a reference area in a native forest remnant were selected. The parameters investigated were species richness, density of individuals by size class, basal area, aboveground biomass, herbaceous cover and tree diameter distribution. Our data showed a very large floristic difference between the muvuca areas and the native forest, indicating that it will take a long time before colonization by propagules originating from nearby remaining forests can take place. We noticed a rapid successional dynamics with a tendency to structurally evolve over time, which may resemble the structure of the native forest under study. Fast-growing species, especially Mabea fistulifera, Tachigali vulgaris, Enterolobium contortisiliquum and Birsonima laxiflora, stood out for their high density of individuals and for contributing to the rapid formation of the adult stratum, while slower-growing species contributed to diversity, from the lower strata, especially Miracrodum urundeuva, Simarouba versicolor, Hymenaea courbaril, Astronium fraxinifolium and Andira vermifuga. We conclude that a previous phytosociological survey in the nearby remnants is essential to start the selection of seeds to be used in planting, since the species richness alone is not capable of guaranteeing its functional success. It is necessary to restore local rather than regional community. In addition, continuous monitoring in these areas is essential to verify whether these species will continue to arrive, as if this does not happen, new management measures may be necessary.

MEMBROS DA BANCA:
Presidente - 82329001 - BEN HUR MARIMON JUNIOR
Interno - 888.812.616-34 - FREDERICO AUGUSTO GUIMARÃES GUILHERME - UFJ
Externo à Instituição - FERNANDO ELIAS DA SILVA - EMBRAPA