Banca de QUALIFICAÇÃO: ANTÔNIA GEICIANE SILVA DE OLIVEIRA DANTAS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ANTÔNIA GEICIANE SILVA DE OLIVEIRA DANTAS
DATE: 26/02/2021
TIME: 14:30
LOCAL: Sala de reuniões do google
TITLE:

Estimating of hollow volume in trees of a dense rain forest in the eastern Brazilian Amazon

KEY WORDS:

Forest mensuration; tree defects; forest production; volume equations; Amazônia

PAGES: 30
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Manejo Florestal
SPECIALTY: Dendrometria e Inventário Florestal
SUMMARY:

Hollows and rot in the trunks are defects in tropical forest trees that can have a significant impact on volume production. A recent study conducted in western Pará (Almeida 2018) revealed that more than half (53%) of trees of commercial species with diameters ≥ 40 cm inventoried in an area of 977 ha were hollow. Similar studies (eg NOGUEIRA et al. 2006; APOLINARIO AND MARTIUS (2004) carried out in the Brazilian Amazon revealed that about one third of the trees studied had this defect. Hollows can represent up to 42% of the stem volume in certain cases (cf. YUKAKO et al. 2015) .The presence of hollow also causes an overestimation of the basal area, volume and biomass of trees (BROWN; LUGO, 1992; BROWN et al., 1995; FEARNSIDE, 2000; NOGUEIRA et al., 2006).

Estimating the volume of hollow trunks in the inventory stage is important for production planning. In forests under concession, where the concessionaire pays the government for the volume extracted, this knowledge is even more important so that the hollow volume can be discounted from the total to be paid to the concession contract manager.

The problem of measuring and proposing effective methods to estimate hollow volume was what motivated this research. The literature on forest measurement is full of studies on the determination of equations for estimating the volume of tree trunks, but mathematical models to estimate hollow volume are scarce or nonexistent. In the present research it is proposed to test models used to estimate trunk volumes in a similar way to the models used to estimate trunk volumes. The final purpose is to generate important information on forest management in the Brazilian Amazon, since studies like these are still incipient.

Given the importance of the occurrence of hollow in forests in the Brazilian Amazon, the research will seek to answer the following general question: the mathematical models commonly used in forestry science to estimate the volumes of logs can be used to estimate, with acceptable precision, the volume of hollow existing in trunks?

BANKING MEMBERS:
Presidente - 142.060.489-91 - JOSE NATALINO MACEDO SILVA - Oxford
Externa ao Programa - 1399943 - SINTIA VALERIO KOHLER
Externo à Instituição - EDSON MARCOS LEAL SOARES RAMOS - UFPA
Externo à Instituição - PAULO LUIZ CONTENTE DE BARROS - UFRA