Banca de QUALIFICAÇÃO: LEILANE AVILA BEZERRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : LEILANE AVILA BEZERRA
DATA : 30/10/2019
HORA: 09:00
LOCAL: Auditório do PGagro
TÍTULO:

Gouania cornifolia Reissek (RHAMNACEAE) FLORAL BIOLOGY AND POLLINATION IN REGENERATION AREA AFTER MINING AND FOREST EDGE

PALAVRAS-CHAVES:

Gouania cornifolia, plant-pollinator interactions, post-mining, natural regeneration.

PÁGINAS: 29
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitossanidade
ESPECIALIDADE: Entomologia Agrícola
RESUMO:

Gouania cornifolia Reissek is a species of liana native to the Amazon with great medicinal and ecological importance. However, there are no records in the scientific literature of studies on its floral biology and pollination ecology. Without this information, it is difficult to identify the biotic potential and favorable use of this species in the regeneration of areas that have undergone intense degradation. In addition, it is important to consider their role in restoring the ecological interactions between plants and pollinators necessary for proper forest regeneration. The present work aims to evaluate the floral biology and pollinators of Gouania cornifolia in a natural population in forest edge areas and regeneration after bauxite mining at Norsk Hydro, Paragominas, PA. Flower longevity and anthesis, morphology, stigmatic receptivity, osmophor concentration, odor and nectar production and floral visitors were evaluated. Flowering occurs in a long period, from May to September, with the highest peak in July, less rainy season, with high temperatures. The flowers are very small, ranging from 2 to 3 mm, are light greenish yellow, with nectariferous disk, arranged in racemose inflorescences. It has male and bisexual flowers, with low nectar production (1.5 µl) and high sugar concentration (80%), abundant pollen and strong citrus odor in the early days. They are protandronic, monoecious, allogamous and heterodicogamous, with individuals who begin anthesis around 6:00 and 7:00 hours and other individuals with anthesis between 10:00 and 11:00 in the morning. Preliminary results show a large visitation of insects during the flowering season, such as bees, flies, wasps, beetles, butterflies and ants, most often in the afternoon between 12:00 and 16:00, which coincides with the period greater availability of nectar, odor and pollen. The frequency of floral visitors were higher in forest edge areas, especially stingless bees, considered potential pollinators, while in the areas of natural regeneration after mining, they were much smaller with higher bee activity solitary Apis mellifera that were considered nectar pillagers. Therefore, it can be stated that G. cornifolia is a generalist entomophilous plant with melitophilia syndrome and has a great contribution in restoring plant-pollinator interactions in areas degraded by mining, where its occurrence was predominant.

MEMBROS DA BANCA:
Externo ao Programa - 6672321 - JOAO UBIRATAN MOREIRA DOS SANTOS
Externo à Instituição - MARIVANA BORGES SILVA - UFPA
Externo à Instituição - MARLÚCIA BONIFÁCIO MARTINS - MPEG
Presidente - 3266519 - TELMA FATIMA VIEIRA BATISTA