Banca de QUALIFICAÇÃO: RAINARA DA SILVA NEVES

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : RAINARA DA SILVA NEVES
DATE: 07/02/2025
TIME: 14:00
LOCAL: Google Meet (https://meet.google.com/tzw-iswg-ryb)
TITLE:

The role of diversity and facilitation in regeneration in restored Caatinga communities

KEY WORDS:

Biodiversity; Conservation; Tropical dry forest; Ecological niche; Ecological restoration.

PAGES: 26
BIG AREA: Ciências Biológicas
AREA: Ecologia
SUMMARY:

The natural regeneration of seedlings is a fundamental ecological process for maintaining plant communities in the long term. After the restoration process, natural regeneration can increase the speed of recovery of the community's structure, function, composition and plant biodiversity. However, the way in which the attributes of plant community diversity present in planting models promote natural regeneration is still little explored. Biodiversity can promote the natural regeneration of plants in restored communities through niche differentiation and facilitation mechanisms. This study aims to test how their facilitation potential and the diversity of trees planted in restored communities in the Caatinga affect the dynamics of natural regeneration of tree species. To this end, we conducted a survey of the woody species that naturally colonized a Caatinga restoration experiment with a focus on biodiversity and ecosystem functioning (BEF) after 7 years of planting. The experiment has 6 diversity treatments (1, 2, 4, 8, 16 species and control plots with no planting) and a gradient of facilitation potential of the tree species planted in the plots. A total of 4,017 regenerating individuals were recorded, comprising 15 woody species representing 10 families, with Fabaceae being the most abundant with 5 species. The results show positive synergistic effects of diversity and facilitation, with a significant interaction between these two variables. The high diversity and high facilitation potential of planted trees increased the abundance of regenerating individuals in the restored communities. In this sense, the structure of the restored plant community is a key factor in fostering the natural regeneration of forests. Thus, implementing planted communities with facilitator species and greater plant diversity can maximize the success of restoring dry environments, contributing to the regeneration, maintenance and long-term functioning of communities.

COMMITTEE MEMBERS:
Interno - 1837921 - ALEXANDRE FADIGAS DE SOUZA
Presidente - 1677189 - GISLENE MARIA DA SILVA GANADE
Externa à Instituição - MILENA CORDEIRO DE AMORIM LOPES