Banca de QUALIFICAÇÃO: JOAQUIM LEMOS ORNELLAS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : JOAQUIM LEMOS ORNELLAS
DATA : 05/07/2021
HORA: 14:00
LOCAL: Sala virtual com link de transmissão https://meet.google.com/nnv-wkfk-cju
TÍTULO:

RESEX Baía do Iguape as a Provider of Ecosystem Services in Carbon Separation: Modeling of Changes in Carbon Stock


PALAVRAS-CHAVES:

Conservation unit, Conservation, Environmental modeling.


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

Carbon is the fourth most abundant element on the planet and in natural systems it permeates all ecosystems in different ways. In mangroves, tropical ecosystems in flooded coastal regions and associated with the Atlantic Forest, the rapid cycling of nutrients and high photosynthetic rates allow for high atmospheric carbon sequestration and storage. Thus, this work aimed to model and estimate the concentrations of carbon stock/sequestration in the epigeal phytomass present in the mangroves of the Baía do Iguape Extractive Reserve in the municipality of Maragogipe/BA, Brazil. The temporal mapping of land use was carried out using images from the Landsat 5 satellites, TM sensor, and Landsat 8 OLI sensor, both with a special resolution of 30 m, the classification method used was unsupervised by the technique of visual interpretation in the Arcgis software 10.8. Linked to the mapping, vegetation indices NDVI, sPRI and CO2FLUX were also produced to detect spatiotemporal changes in vegetation. Area transition analyzes for land use between the mapped years and ANOVA analysis of variance for the quantitative of natural and anthropic classes and Spearman correlation analyzes and simple linear regression for vegetation indices were also performed. The mapping result indicates an increase in the mangrove and dense rainforest classes by 240 ha and 52 ha, respectively, between 1986 and 2020, despite this, the mapping indicates an increase in anthropogenic areas by 76 ha and a reduction by 78 ha for natural areas. The classes that presented the highest amount of transition in the entire analysis were the mangrove, rainforest and grassland classes, indicating that there is still conversion of natural classes. Regarding the spectral analysis of mangroves, the NDVI suggests an increase in vegetative vigor for this vegetation from 2005, the sPRI showed a higher photosynthetic rate in 2018, as well as the CO2FLUX had a peak of carbon sequestration in the same year. The correlation showed that the greater the vegetative density, the greater the amount of carbon sequestered by the mangroves and that anthropogenic tensors and salinity can interfere in the spectral behavior of the vegetation due to photoprotection mechanisms and water stress. Thus, it is considered that the analysis of variance indicated significant changes in natural and anthropogenic areas occurred regardless of time and the increases in mangroves occurred far from anthropogenic impacts, suggesting the existence of coastal anthropobiomes in RESEX.


MEMBROS DA BANCA:
Presidente - 3072612 - ELFANY REIS DO NASCIMENTO LOPES
Externo ao Programa - 3078469 - IGOR EMILIANO GOMES PINHEIRO
Externo à Instituição - RODRIGO LILA MANZIONE - UNESP
Externo à Instituição - ALEXANDRE CAMARGO MARTENSEN - UFSCAR
Notícia cadastrada em: 10/06/2021 22:59
SIGAA | Superintendência de Tecnologia da Informação -   | Copyright © 2006-2024 - UFRN - 6b062eeef8db.sigaa2-prod