Banca de DEFESA: JOAQUIM LEMOS ORNELLAS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JOAQUIM LEMOS ORNELLAS
DATA : 03/02/2022
HORA: 09:00
LOCAL: Metapresencial
TÍTULO:

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

PALAVRAS-CHAVES:

Protected áreas. Conservation. Environmental modelling.

PÁGINAS: 101
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 not supervised 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. Analyzes of the transition from area to land use between the mapped years and the quantitative of natural and anthropic classes were also carried out. The result of the mapping indicates an increase in the classes of mangrove and dense rainforest by 240 ha and 52 ha, respectively, between 1986 and 2020, linked to this, the mapping indicates an increase in natural areas by 186 ha. The classes that presented the highest quantitative transition in the entire analysis were the mangrove, rainforest and grassland areas, indicating that there is still conversion of natural classes. Regarding the spectral analysis of the mangroves, the NDVI suggests fluctuation in the vegetative vigor of the mangroves, with 2005 being the year with the highest NDVI values, while in photosynthetic production, there is a low in the years with major anthropogenic disturbances followed by a high in 2000 and 2020. the carbon flux, the index suggests that from 2005 onwards there was an increase in the sequestration rate over time, except in 2000, with the peak in 2020. The analyzes showed that the more vegetative density, the greater the amount of carbon sequestered by mangroves and that anthropic tensors and salinity can interfere in the spectral behavior of vegetation due to photoprotection mechanisms and water stress. Thus, it is considered that the increase in mangroves occurred far from anthropogenic impacts, suggesting the existence of coastal anthropobiomes in RESEX

MEMBROS DA BANCA:
Externo à Instituição - ALEXANDRE CAMARGO MARTENSEN - UFSCAR
Presidente - 3072612 - ELFANY REIS DO NASCIMENTO LOPES
Externo ao Programa - 3078469 - IGOR EMILIANO GOMES PINHEIRO
Externo à Instituição - RODRIGO LILA MANZIONE - UNESP