Banca de QUALIFICAÇÃO: JOSIENE NAVES CARRIJO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : JOSIENE NAVES CARRIJO
DATA : 20/12/2019
HORA: 08:30
LOCAL: Sala de aulas do Programa de Pós Graduação em Ecologia
TÍTULO:

Functional Attributes as Indicators of Ecological Strategies for Savanna and Forest Wood Plants

PALAVRAS-CHAVES:

functional adjustment, environmental determinants, adaptive strategies, woody species, soil-plant relationship

PÁGINAS: 48
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

The functioning of plant communities in different habitats depends both on the environment, acting as an environmental filter, and on the functional adjustments of the different species to environmental conditions. There are large gaps in knowledge regarding functional adjustments of vegetation at community and specific level. Therefore, we determine here the functional attributes of woody plants of two savanna environments of the Cerrado Biome occurring on different substrates: 1. Alluvial Cerrado (CA); 2. Typical Cerrado (TC). We hypothesized that the functional attributes of the community and species differ between the two environments, since the substrates of these environments differ in the availability of water and nutrients to plants. We sampled six attributes (LA, LT, SLA, SSD, Btrel and HTOT) from 101 common or exclusive species from each environment. Alluvial Cerrado plants have smaller leaf area and bark thickness, higher specific leaf area and wood density and less relative bark thickness and total maximum height. The species common to both environments have high phenotypic plasticity of attributes. Thus, we conclude that: 1. Thicker leaves, with larger specific leaf area in the Cerrado Alluvial, represent resource acquisition strategy, allowing the maximization of the photosynthetic rate; 2. Smaller and higher density plants have functional adjustments in response to lower water availability; 3. Thicker bark makes the typical Cerrado shrub species more resistant to burning. Thus, the structuring of woody communities in both environments depends on the functional adjustment of plants to water availability and intensity of burning.

MEMBROS DA BANCA:
Interno - 996.005.011-49 - DIVINO VICENTE SILVÉRIO - UnB
Interno - 132029001 - EDDIE LENZA DE OLIVEIRA
Externo ao Programa - 704.952.111-68 - MARINA CORRÊA SCALON - NENHUMA
Externo ao Programa - 555.911.591-68 - PAULO SERGIO MORANDI - UNEMAT