Banca de DEFESA: NICOLAS ZASLAVSKY DE LIMA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : NICOLAS ZASLAVSKY DE LIMA
DATA : 26/04/2019
HORA: 14:30
LOCAL: sala 107 - Campus Amazônia
TÍTULO:

SURVIVAL AND GROWTH OF BRAZIL NUT TREE (Bertholletia excelsa Bonpl.) SEEDLINGS UNDER EFFECT OF CANOPY OPENNESS AND PREDATION

PALAVRAS-CHAVES:

break of dormancy; Planting of seedlings; reforestation; Effect of shading Forestry recovery.

PÁGINAS: 86
GRANDE ÁREA: Outra
ÁREA: Ciências Ambientais
RESUMO:

The Brazil nut is the edible seed of Bertholletia excelsa, a tree species that
occupies the canopy in the Amazon forest, this product that circulates in international
trade still comes almost exclusively from extractivism. Studies have indicated the decline
in the production of natural populations, the main source of this product, due to aging and
low regeneration, so it becomes increasingly important to establish planting areas to
ensure the availability of this resource in the near future. The objective of this work is to
discuss the growth and survival of recently germinated Brazilian nut seedlings under
conditions of different light availability and susceptibility to predation. The experiment
was carried out in the Saracá-Taquera National Forest at Oriximiná/PA, with planting of
Brazilian nut seedlings under a closed forest canopy and in a gap opened by logging. The
percentage of seedlings survival of 70% and 77%, indicates the treatment Clearing as
significantly higher (p = 0.02), in this treatment also a better performance was observed,
with an increase in height (AMIh = 27.8 cm-1) 2.7 times higher than the Forest (AMIh =
10.1 cm year-1), increment in diameter at soil height (AMId = 4.7 mm year-1) 3.4 times
that of Forest (AMIf = 13 leaves), 6.5 times higher than the Forest (AMIf = 1.9 leaves).
There was a negative and significant correlation between the three performance indicators
(AMIh, AMId and AMIf) and canopy cover, for diameter at soil height the correlation was
the strongest (r = -0.66). The Brazil nut seedlings in Patauá plantation show good
performance and high survival, confirming that this species has great potential for use in
forest restoration areas.

MEMBROS DA BANCA:
Externo ao Programa - 1520271 - JOAO RICARDO VASCONCELLOS GAMA
Interno - 1794276 - JOSE MAURO SOUSA DE MOURA
Presidente - 1796322 - RICARDO SCOLES CANO
Externo à Instituição - ROGÉRIO GRIBEL - INPA