Banca de DEFESA: Juliana Farias de Lima Oliveira

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : Juliana Farias de Lima Oliveira
DATE: 06/10/2023
TIME: 14:00
LOCAL: https://teams.microsoft.com/l/meetupjoin/19%3ameeting_MDg1ODdiZDYtMDU3OC00NjY2LTljMGQtOGFmZGQyNGEwN
TITLE:

Soil water repellency in the Brazilian neotropical savanna: first detection, seasonal effect, and influence on infiltrability

KEY WORDS:

Hydrophobicity; ecohydrology; percolation; water dynamics

PAGES: 41
BIG AREA: Outra
AREA: Ciências Ambientais
SUMMARY:

Soil water repellency (SWR) has been detected worldwide in various biomes and climates. However, this phenomenon has not been shown yet in the Brazilian neotropical savanna. The present study addresses the following questions: a) Does SWR occur in the Brazilian neotropical savanna? If so, b) does it exhibit seasonality? c) Does it influence infiltration? To do that, we selected two similar study areas covered by the same soil and vegetation types. We performed water repellency and infiltration tests in both areas during the transition from dry to wet season. Our results indicate that SWR occurs in soils of the Brazilian neotropical savanna only during the dry season and does not influence soil water infiltration. The likely cause of SWR might be related to the chemical composition of soil organic matter since neotropical savanna plants produce hydrophobic substances as a survival strategy, especially during the dry season.

COMMITTEE MEMBERS:
Externo à Instituição - Gleicon Queiroz de Brito - UEG
Interno - 1644727 - LUIZ FABRICIO ZARA
Presidente - 2275533 - LUIZ FELIPPE SALEMI
Externo à Instituição - ROBSON WILLIANS DA COSTA SILVA - UFSCAR
Externo ao Programa - 3128717 - UIDEMAR MORAIS BARRAL - UnB