Name: Fabiano Caprini Volponi
Type: PhD thesis
Publication date: 30/09/2022
Advisor:
Name |
Role |
|---|---|
| Paulo Cezar Cavatte | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| Camilla Rozindo Dias Milanez | Internal Alternate * |
| Elias Terra Werner | Internal Examiner * |
| Geraldo Rogério Faustini Cuzzuol | Internal Examiner * |
| Josimar Aleixo da Silva | External Examiner * |
| Leandro Torres de Souza | External Alternate * |
| Mário Luís Garbin | External Examiner * |
| Paulo Cezar Cavatte | Advisor * |
Summary: Sandbanks are ecosystems that bring together some important attributes for the
occurrence of ecological speciation. It is a set of coastal phytophysiognomies of
the Atlantic Forest that present multivariate environments on a reduced spatial
scale. In this context, we investigated responses of two populations of Protium
icicariba, distributed parapatrically, in two contrasting environments. Our
objectives were: to compare chemically-physically the soils of the periodically
flooded forest formation and the non-flooded open shrub formation; to investigate
whether populations of P. icicariba, distributed in the two formations, present
functional differences in morphological and anatomical characteristics in leaves
and branches; to analyze the synchrony between reproductive phenophases of
populations and, by means of germination analysis and initial development of
seedlings, to verify the viability of immigrants between the plant formations. We
found that a considerable number of morphological and anatomical characters
are adaptive and important for the colonization of different plant formations. In
addition, environments induce small asynchronies between populations`
reproductive periods. Finally, we verified the possible unfeasibility of immigrants
(seeds and seedlings), when subjected to conditions that contrast with their place
of origin. In fact, these results corroborate the minimum conditions for the
development of ecological speciation among P. icicariba populations and open
the way for new works that consolidate these premises.
Keywords: Anatomy reproductive phenology germination common garden
morphology
