PPG - Ecologia e Evolução
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Navegando PPG - Ecologia e Evolução por Orientador(es) "Caruzo, Maria Beatriz Rossi [UNIFESP]"
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- ItemAcesso aberto (Open Access)Diversidade e biogeografia das espécies arbóreas da tribo Crotoneae (Euphorbiaceae) na floresta atlântica(Universidade Federal de São Paulo, 2016-06-17) Santos, Rafaela Freitas dos [UNIFESP]; Caruzo, Maria Beatriz Rossi [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)The Atlantic Forest is considered one of the world's hotspots of biodiversity and, even with the growing threat to its ecosystems, has a high level of biological diversity and endemism. Euphorbiaceae is one of the largest, most diverse and complex families of Angiosperms, with about 6300 species in almost all regions of the planet. The family has great importance in brazilian flora with almost 1000 occurring in all phytogeographical domains of the country, being one of the most diverse botanical families within Atlantic Rain Forest. The genera of the tribe Crotoneae occurring in the Atlantic Forest are the following: Astraea, Brasiliocroton and Croton. Among them, Croton is considered one of the most diverse angiosperm genera within the Atlantic Forest. Considering the high diversity and importance of Crotoneae tribe in the Atlantic Forest, this work aimed: to carry out a survey of arborescent species of the tribe occurring on that phytogeographical domain, identify the distribution patterns and areas of endemism of those species in the Atlantic Forest and evaluate their conservation status. Based on the analysis of herbaria material and observations of the species in their natural habitats, were recognized 24 arborescent species of the tribe Crotoneae in the Atlantic Forest, which about 77% are endemic to this phytogeographical domain. The genera with are with arborescent representants in the Atlantic Forest are: Brasiliocroton, with two species , and Croton, with 22 species (of which 4 occurs beyond the limits of the Atlantic Forest domain). These species are distributed in two patterns: species of South Atlantic Foresta and the Northern Atlantic Forest, separate for Doce river. Two areas of endemism were detected for the studied taxa: Bahia, bounded by the Doce river and Baia de Todos os Santos, and Serra do Mar, with altitudinal gradient as possible barriers. Therefore, this study increased the knowledge of Crotoneae tribe of genres in Brazil and in the Neotropics.
- ItemSomente MetadadadosO gênero Acalypha (Euphorbiaceae) na Floresta Atlântica(Universidade Federal de São Paulo, 2018-06-27) Sousa, Ana Angelica Cordeiro de [UNIFESP]; Caruzo, Maria Beatriz Rossi [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Acalypha L. is the third largest genus of Euphorbiaceae, with approximately 450 species. The genus is represented on almost all continents and its greatest diversity is reported to the Neotropics. In Brazil, Acalypha has about 50 species, of which 30 are endemic, distribuited in all phytogeographic domains, but with greater diversity in Cerrado and Atlantic Forest. The Atlantic Forest domain is one of the most biodiverse regions in the planet. We found 20 species of Acalypha in this domain, occurring in almost all types of vegetation within the region. In this work, we present the diversity, a taxonomic treatment, geographic distribution and conservation status for all species of Acalypha from the Atlantic Forest domain. During this study, we describe a new species, Acalypha almadinensis, endemic to Bahia, and identify six new occurrences for the domain: domínio (A. almadinensis A.A.C.Sousa, A. aristata Kunth., A. diversifolia Jacq., A. herzogiana Pax & Hoffmm., A. klotzschii Baill., e A. macrostachya Jacq.). We also have found new records of Acalypha aspericocca and A. klotzschii for the states of Minas Gerais and Bahia, and A. peckoltii for the state of São Paulo. Besides this, we also found new morphological characters for the delimitation of the species and created an identification key for them. Finally, this work updated the knowlodge about Acalypha for the Atlantic Forest domain, as well as for the neotropical region.
- ItemSomente MetadadadosO gênero Croton L. no Estado do Paraná, Brasil(Universidade Federal de São Paulo, 2017-06-28) Pereira, Amanda da Paixao Noronha [UNIFESP]; Caruzo, Maria Beatriz Rossi [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Croton L. is the second largest genus of Euphorbiaceae, with about 1200 species distributed mainly in the tropical regions around the world. The genus can be easily recognized by a set of characters that include indumentum of stellate or lepidote trichomes, colored or clear latex, leaves often with glands on the petiole apex along the leaf blade and terminal inflorescences, usually with pistillate flowers at lower cymules and staminate flowers at distal cymules. In Brazil, Croton is ranked as the 4th most diverse Angiosperm genus and is represented by about 300 species, including herbs, shrubs and trees, mostly distributed in the eastern part of the country. In order to increase the knowledge about species of Croton in Brazil, this work had as main objectives: to conduct the taxonomic treatment and create an identification key for the species of Croton occurring in the State of Paraná. The taxonomic study is being conducted based on the analysis of deposited material in the main Brazilian herbaria (with emphasis on herbaria from Paraná), and the observation of species in the field. In the state of Paraná was found 38 species of the genus, occurring in almost all types of vegetation. This study contributed to the knowledge of Croton in southern Brazil, also providing data about the genus for the Project Flora do Brasil 2020.