Banca de QUALIFICAÇÃO: ANE CAROLINE CANDIDO FIRMO DE OLIVEIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ANE CAROLINE CANDIDO FIRMO DE OLIVEIRA
DATE: 19/05/2025
TIME: 09:00
LOCAL: meet.google.com/ahh-ahzg-csv
TITLE:

RAIN PULSES AND CO₂ BALANCE IN CAATINGA AREA

KEY WORDS:

Eddy Covariance, Ecosystem services, Semi-arid

PAGES: 39
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUBÁREA: Meteorologia
SPECIALTY: Micrometeorologia
SUMMARY:

The Caatinga, a biome of the Brazilian semi-arid region, faces anthropogenic pressure and desertification, with only 1% of its area protected despite its high biodiversity. Climate projections indicate rising temperatures and reduced rainfall in the region, likely increasing aridity and water scarcity, with negative consequences for the Caatinga's ecosystem services. This research aims to analyze CO₂ sequestration by the Caatinga biome during isolated rainfall events, considering its resilience, through the relationship between surface conductance, water and carbon use efficiency, and rainfall intensity, as well as the evaluation of the CO₂ balance based on Gross Primary Production (GPP), Net Ecosystem Exchange (NEE), and Ecosystem Respiration (Reco) before, during, and after rainfall pulses. Data for the study were collected using a micrometeorological flux tower with an Eddy Covariance system at the Açu National Forest (RN) from July 20, 2023, to June 18, 2024, focusing on the occurrence of rainfall pulses on November 27, 2023. Data were measured and stored using Loggernet, processed with EddyPro and REddyProc, and subsequently filtered, corrected, and gap-filled. The research will investigate whether pulses during the dry season stimulate CO₂ uptake, analyzing GPP, NEE, respiration, and water and carbon use efficiency.

COMMITTEE MEMBERS:
Interno - 2086472 - BERGSON GUEDES BEZERRA
Interno - 1752417 - CLAUDIO MOISES SANTOS E SILVA
Interno - ***.400.082-** - GABRIEL BRITO COSTA - UFOPA
Externa à Instituição - KEILA RÊGO MENDES - INPA