DISSERTAÇÃO DE MESTRADO - PROGRAMA DE PÓS-GRADUAÇÃO EM BIODIVERSIDADE E CONSERVAÇÃO

URI Permanente para esta coleçãohttps://tedebc-teste.ufma.br/handle/tede/282

Navegar

Navegando DISSERTAÇÃO DE MESTRADO - PROGRAMA DE PÓS-GRADUAÇÃO EM BIODIVERSIDADE E CONSERVAÇÃO por Autor "BARRETO, Bruno de Souza"

Filtrar resultados informando as primeiras letras
Agora exibindo 1 - 2 de 2
  • Nenhuma Miniatura disponível
    Item
    Diversidade e eficiência de rizóbios simbiontes de leguminosa arbórea na Amazônia oriental
    (Universidade Federal do Maranhão, 2021-12-20) SOUZA, Juliana Lima Brito; COELHO, Kátia Pereira; http://lattes.cnpq.br/7656587511436822; AGUIAR, Alana das Chagas Ferreira; http://lattes.cnpq.br/7656587511436822; AGUIAR, Alana das Chagas Ferreira; http://lattes.cnpq.br/7656587511436822; CORRÊA, Thaís Roseli; http://lattes.cnpq.br/3415407798108175; BARRETO, Bruno de Souza; http://lattes.cnpq.br/2022301821222852; COSTA, Patrícia Freitas; http://lattes.cnpq.br/7720775577946094
    Among the challenges to mitigate the low efficiency of waste use in tropical is the understanding of the processes involved in the efficiency of the symbiosis between trees and legumes. In this context, the present work aims to evaluate the phenotypic diversity of rhizobia in symbiosis with Gliricidia sepium, isolated from Amazonian soil, as well as their efficiency in comparison with commercial inoculant and chemical nitrogen fertilization. For the setup of the experiment in a greenhouse and isolation of native rhizobia were used containing soils from a pasture area and an area with secondary pots in position for ten years, using sepium as a trap. Plant development was evaluated using three sources from the native community: control (native bacteria present in the soil); inoculant; and chemical nitrogen fertilizer. As measured variables they serve to construct a plant development index (VDI). The results point to a compatibility of the native rhizobia community with an exotic legume in both responses, with a proposal of equality of results or superior to the alternative treatments of nitrogen and inoculation with recommended strains. Nodular natives were found in the symbiotic use area similar to natural treatments 1, isolated and identified as using the organic source or potentially rich in the use of the organic source for the recovery of degraded areas.
  • Nenhuma Miniatura disponível
    Item
    Entender a dinâmica do fogo para a conservação da Reserva Biológica do Gurupi na Amazônia Oriental
    (Universidade Federal do Maranhão, 2021-12-17) FREIRE, Ana Talita Galvão; ANDERSON, Liana Oighenstein; http://lattes.cnpq.br/7834780583735756; ROUSSEAU, Guillaume Xavier; http://lattes.cnpq.br/7950642644511983; ROUSSEAU, Guillaume Xavier; http://lattes.cnpq.br/7950642644511983; ANDERSON, Liana Oighenstein; http://lattes.cnpq.br/7834780583735756; BARRETO, Bruno de Souza; http://lattes.cnpq.br/5577038057194931; BEZERRA, Denilson Da Silva; http://lattes.cnpq.br/6162113647472848
    The Gurupi Biological Reserve is an integral protection conservation unit in the Amazon, sheltering endemic and endangered species altered to serve economic interests. Furthermore, continuous deforestation puts the occurrence of forest fires at constant risk. Thus, this master's thesis consisted of understanding the dynamics of fire in different ages of secondary forests, verifying fire's temporal and spatial dynamics and its relationship with climatic variables and with land use and land cover in the interior of Rebio and its area, as a subsidy for the conservation of biodiversity in the region. Thus, the Mann-Whitney test was performed to test the hypothesis of a difference in fire occurrences inside and around the Rebio and use the Google Earth Engine to process data from 2012 to 2018. The results showed that in 2016, 85% of fire ignitions were found to occur in forest cover, evidencing arson fire and not escaping from adjacent areas. On the other hand, an average of 81% of the ignitions took place inside Rebio, while 19% came from the surrounding area. It is understood that this study identifies priority areas for prevention activities since it explicitly identified the forest areas that were already affected by fire and, therefore, are more susceptible to new fires.