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Floristics and vegetation structure in areas of caatinga savannas in the Coreaú basin, Ceará, Brazil
by
de Souza, Elnatan Bezerra
, Ximenes Portela, Luís Henrique
, Pereira, Marízia Menezes Dias
in
Vegetation
2025
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Floristics and vegetation structure in areas of caatinga savannas in the Coreaú basin, Ceará, Brazil
by
de Souza, Elnatan Bezerra
, Ximenes Portela, Luís Henrique
, Pereira, Marízia Menezes Dias
in
Vegetation
2025
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Floristics and vegetation structure in areas of caatinga savannas in the Coreaú basin, Ceará, Brazil
Journal Article
Floristics and vegetation structure in areas of caatinga savannas in the Coreaú basin, Ceará, Brazil
2025
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Overview
Although the Brazilian Cerrado occupies a large continuous area in central Brazil, it also occurs in disjunct patches across other regions. In the semi-arid zone, some of these patches have shown greater floristic and ecological affinity with the Caatinga and are thus referred to as caatinga savannas. These areas exhibit diverse vegetation types, with varying densities depending on the degree of arboreal cover. identified the flora and characterized the natural vegetation of four sites located in two municipalities in the state of Ceará: Granja (Fazenda Quilómetro 35, Papagaios, and Vereda dos Tomás) and Martinópole (Bom Princípio), within the Coreaú River Basin. The classical sigmatist method of Braun-Blanquet was applied for vegetation survey, followed by a classificatory analysis (Modified Twinspan) to distinguish plant communities. Botanical expeditions and phytosociological inventories were conducted unsystematically in 2018, 2023, and 2024. A total of 73 phytosociological inventories were carried out, allowing the identification and proposal of 10 plant communities, classified as arboreal, arboreal-shrub, shrub, and herbaceous. The synphytosociological analysis led to the proposal of two edaphophilous vegetation series. O Cerrado brasileiro, embora ocupando uma grande área contínua no Brasil central, ocorre de forma disjunta em outras regiões. No semiárido, algumas dessas áreas revelaram-se mais próximas florístico e ecologicamente com a Caatinga, recebendo a denominação de savanas da caatinga. Estas apresentam fitofisionomias diversificadas, cujas densidades variam de acordo com o grau de cobertura do estrato arbóreo. Caracterizou-se a estrutura e classificou-se a vegetação natural de quatro áreas de savana da caatinga em dois municípios do Ceará, Granja (Fazenda Quilómetro 35, Papagaios e Vereda dos Tomás) e Martinópole (Bom Princípio), na bacia hidrográfica do rio Coreaú. No estudo da vegetação aplicou-se o método clássico sigmatista de Braun-Blanquet e efetuou-se uma análise classificativa (Modified Twinspan) na separação das comunidades vegetais. As expedições de campo e a realização de inventários fitossociológicos ocorreram de maneira assistemática, nos anos de 2018, 2023 e 2024. Efetuaram-se 73 inventários fitossociológicos que permitiram identificar e propor 10 comunidades classificadas em arbórea, arbóreo-arbustivas, arbustivas e herbáceas. Na análise sinfitossociológica propõem-se duas séries edafófilas de vegetação.
Publisher
EDP Sciences
Subject
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