Plantas exóticas ocorrem no Brasil desde o período setecentista provocando mudanças profundas em ecossistemas distintos e ameaçando a manutenção da biodiversidade pelo domínio de grandes áreas. Este trabalho objetivou apontar ocorrência e usos de espécies exóticas em comunidades rurais da Chapada do Araripe, sul do Ceará, enfocando o comparativo entre o conhecimento popular e os resultados de pesquisa de campo e herbários virtuais. Foram realizadas 12 expedições às comunidades rurais de Cruzeiro, Baixa do Maracujá, Santo Antônio (em Crato), Macaúba e Bela Vista (Barbalha), onde coleta de material botânico e entrevistas por questionários semiestruturados foram realizadas. Na pesquisa em bases de dados e in loco apontou-se 56 espécies distribuídas em 32 famílias, sendo Poaceae (nove ssp. - 5,04%) a mais representativa. O estudo etnodirigido apontou ocorrência de 181 espécies e 155 gêneros distribuídos em 69 famílias, com prevalência de Araceae (10 spp. – 18,1%) e Lamiaceae (nove spp. – 16,29%). Aloe L. e Echeveria DC. foram os gêneros de maior destaque (quatro spp.) e Persea americana Mill. (Lauraceae) e Musa sp. L. (Musaceae), as espécies de maior IVI: 0,32. Azadirachta indica A. Juss. (Meliaceae) foi a arbórea prevalecente em todos os meios de investigação, apontando a necessidade de controle. Com isto, contribui-se para que ações e estratégias de contenção e erradicação de espécies prejudiciais neste ambiente sejam elaboradas, auxiliando tomadas de decisões. Este é o primeiro trabalho a apresentar listagem de plantas exóticas na Chapada do Araripe e propõe medidas de manejo voltadas à mitigação de eventuais impactos causados por alguns representantes.Palavras-chave: Invasão biológica, Plantas exóticas, Chapada do Araripe, Etnobotânica.Exotic plants in Chapada do Araripe (Northeast Brazil): occurrence and uses A B S T R A C TExotic plants occur in Brazil since the 18th century, causing profound changes in different ecosystems and threatening the maintenance of biodiversity by dominating large areas. This study aimed to point out the occurrence and uses of exotic species in rural communities in Chapada do Araripe, southern Ceará, focusing on the comparison between popular knowledge and the results of field research and virtual herbaria. Twelve expeditions were carried out in rural communities of: Cruzeiro, Baixa do Maracujá, Santo Antônio (in Crato), Macaúba and Bela Vista (Barbalha), where collection of botanical material and interviews by semi-structured questionarys were carried out. In the data base research, 56 regions in 3 families are based, being Poaceae - 5.04%) the most representative. The ethno-directed study pointed the occurrence of 181 species and 155 genera distributed in 69 families with prevalence of Araceae spp. – 18.1%) and Lamiaceae (no10 spp. – 16.29%). Aloe L. and Echeveria DC. were the most prominent genera (four spp.) and Persea americana Mill. (Lauraceae) and Musa sp. L. (Musaceae), the species with the highest IVI: 0.32. Azadirachta indica A. Juss. (Meliaceae) was the prevailing tree in all means of investigation, in view of the need for control. With this, this study contributes so that actions and strategies to contain and eradicate harmful species in this environment are developed, helping in decision making. This is the first to feature the listing exotic plants in Chapada do Araripe and and proposes management measures aimed at mitigating possible impacts caused by some representatives.Keywords: Biological invasion, Exotic plants, Chapada do Araripe, Ethnobotany.
Until now, Serraseius Moraes, Barbosa and Castro was a monotypic genus represented by Serraseius caicara Moraes, Barbosa and Castro, found in a fragment of the Atlantic Forest of the state of São Paulo, southeastern Brazil. This paper describes the second species of the genus, Serraseius nordestinus Araújo and Oliveira sp. nov., found in a fragment of the Atlantic Forest of the state of Pernambuco, northeastern Brazil. The examination of the specimens of this new species led to a need to adjust the morphological concept of the genus, changing the interpretation of one of the dorsal shield setae from Z1 to S2 (hence changing the idiosomal pattern to 10A:7F/JV-3:ZV-3), including trumpet-shaped as an additional type of spermathecal calyx for species of the genus and the possibility to have S5 inserted in the unsclerotized cuticle.
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