Banca de DEFESA: PAULO JERONIMO LUCENA DE OLIVEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : PAULO JERONIMO LUCENA DE OLIVEIRA
DATE: 03/03/2022
TIME: 14:00
LOCAL: Defesa virtual pelo Google Meet. Link - meet.google.com/ixs-rwsu-hdj
TITLE:

Landscape metrics and ecosystem services: a geoecological approach in the Esec-Seridó buffer zone, NE – Brazil

KEY WORDS:

Semiarid; GIS; Caatinga; Geoecology.

PAGES: 150
BIG AREA: Ciências Humanas
AREA: Geografia
SUMMARY:

The approach of Geoecology as the study of the set of interrelated elements between the association of living beings and their environmental conditions, acting in a specific part of the landscape, or even in a natural division of space, with different spatial dimensions, presents its bases solid and widely discussed in geographic science. Thus, the understanding of the landscape from different methodological procedures becomes valid for the systemic interpretation of environmental aspects. Within the scope of research in the Caatinga, the geoecological approach has been widely applied to understand the landscape from the relationship between man and nature, focusing on the change of the environment through human action, corroborating the process of fragmentation and loss of ecological functions. These anthropic pressures increase the speed of the forest fragmentation process, which triggers a sequence of imbalances along the environmental system, causing low quality in the provision of Ecosystem Services (ES). In this sense, this research has the general objective of analyzing the landscape from the application of different methodological approaches in the buffer zone of the ESEC-Seridó. To this end, satellite images from the years 1988, 1998, 2008 and 2019 were used to understand the temporal dynamics of vegetation cover, where 03 classes of vegetation cover were obtained: thin vegetation, open vegetation and dense/riparian vegetation. It was found that the most representative class was open vegetation, presenting about 43% for the years 1988, 1998 and 2008, with sparse Caatinga being the most expressive in 2019 (29%). Subsequently, the degree of fragmentation of forest remnants was evaluated based on landscape metrics in three categories: area, shape and edge. A total of 394 forest fragments were identified, of which 25% have values below 05 hectares and which tend to present greater characteristics of unstable environments. Then, the ability of the study area to provide ecosystem services of erosion control through the Universal Soil Loss Equation (USLE) and carbon sequestration through the improved photochemical reflectance index was evaluated. It was identified that about 64% of the study area has a high relevant capacity for erosion control, with areas that do not have any relevant capacity representing around 6% of the total area. The carbon stock, on the other hand, has a relevant capacity of 38%. It is concluded that the combination of different methodological procedures for a reading of the landscape becomes effective, enhancing the planning and territorial ordering in semi-arid landscapes.

BANKING MEMBERS:
Presidente - 2966354 - DIOGENES FELIX DA SILVA COSTA
Interno - 1503011 - LUTIANE QUEIROZ DE ALMEIDA
Externa à Instituição - JACIMÁRIA FONSECA DE MEDEIROS - UERN