Name: Kamila Jesus de Souza
Type: MSc dissertation
Publication date: 28/03/2023
Advisor:
Name |
Role |
|---|---|
| Antelmo Ralph Falqueto | Co-advisor * |
| Luis Fernando Tavares de Menezes | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| Luis Fernando Tavares de Menezes | Advisor * |
| Marcelo da Costa Souza | External Examiner * |
| Stéfano Zorzal de Almeida | Internal Examiner * |
Summary: The interaction between the species Aechmea blanchetiana (Baker) L.B.Sm. (Bromeliaceae) and the germinated
species, was evaluated to answer the following questions: (1) The abiotic factors differ under the canopy of this
bromeliad when compared to sites with their absence (2) Resource availability is greater under the canopyof the
bromeliad than the who us without the said species? (3) Does the bromeliad A. blanchetiana promote facilitation
through germination in restinga environments? (4) does the effect of this bromeliad increase seedling survival?
(5) Is the soil influenced by the presence of bromeliad? We evaluated the effect of the presence of the bromeliad
Aechmea blanchetiana (Baker) L.B.SM. in the germination and development of species in a restinga area. The study
was conducted at Centro Universitário Norte do Espírito Santo, in São Mateus, ES. Fruits of six species and soil
samples were collected in a restinga area in the APA of Conceição da Barra, Conceição da Barra, ES. The experiment
was organized in a randomized experimental design, consisting of three blocks. Each block contained a control
(absence of bromeliad) and two treatments with the presence of bromeliad. For each block, we used 150 seeds, with
five seeds of each species for each repetition. The germination percentage, germination speed index, average
germination time, environmental variables, biometry attributes and biomass of the root and aerial part of the seedlings,
organic matter and chemical analysis of the soil were evaluated. The results showed that the treatments with the
presence of bromeliad favored the percentage and rate of germination speed, average time of germination and the
survival of the studied species. In addition, it was observed that the parameters of biometrics and seedling biomass
were positively influenced by the presence of bromeliad. A greater availability of resources was observed in the soil
WHERE the bromeliad was present. Based on these results, we conclude that A. blanchetiana acts as a facilitator plant,
providing adequate conditions for the germination and establishment of the six studied species, both below their
canopies and inside their tank. This facilitator plant softens the extreme conditions of the environment, allowing the
growth of the studied species.
Key-words: Positive interaction; nurse plants; restinga restoration.
