Flora das cangas da Serra dos Carajás, Pará, Brasil: Hydrocharitaceae

Hall, Climbiê Ferreira; Gil, André dos Santos Bragança

doi:10.1590/2175-7860201667533

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Walp. (Hydrocharitaceae, see Hall & Gil 2016) and Nymphaea rudgeana G.Mey (Nymphaeaceae, see Lima 2018) were not found in the PNCF because of the absence of this type of micro-habitat. In this sense, it is not unexpected that magnoliids and Alismatales, lineages often associated with water, appear underrepresented in the PNCF when compared to FLONA de Carajás sites (Figure 5).…”

Section: Biogeography Of Amazonian Cangamentioning

confidence: 99%

Floristic data to support conservation in the Amazonian canga

Silva,

Lovo,

Fonseca-da-Silva

et al. 2023

Biota Neotrop.

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Canga is an environment of great natural and economic value because it harbours a considerable number of endemic species on a substrate that is rich in iron ore. In the Amazon, this open vegetation type grows on top of isolated outcrops in a dense forest matrix found in the Carajás region, in southeastern Pará. Of these outcrops, the Parque Nacional dos Campos Ferruginosos (PNCF) is the only area of Amazonian canga with a strict protection status. Therefore, industrial activity in the region needs to implement mitigation actions to ensure species and habitat conservation. The objective of this study is to complement and review the floristic list of this recently created protected area, enabling us to compare the floristic similarity between it and other 14 Amazonian canga outcrops found outside the conservation units of full protection in the region. This data provides a basis to understand the floristic and phylogenetic complementarity of those patches to support conservation action. For this, six field trips were carried out in the Serra da Bocaina and two in the Serra do Tarzan, respectively, in order to increase the sampling efforts in PNCF and to obtain a more comprehensive plant list. Floristic composition was investigated using multivariate analyses (non-metric multidimensional scaling and unweighted pair group method with arithmetic mean) and phylogenetic structure across studied areas. We added 159 species to the floristic list of the PNCF and the results of the analyses showed that all 16 areas (n.b. PNCF comprises two of these sites) have an overall floristic similarity of 42%, with the least similar areas at 35% and the most similar at 50%. The different micro-habitats found in each study site highlight the high beta diversity of the Amazonian canga sites, making each area unique. Therefore, even if the Parque Nacional dos Campos Ferruginosos does not harbour all the species found in the other Amazonian canga sites, it is strategic for the conservation of the vegetation on ferruginous outcrops in the Amazon, protecting its biodiversity, different habitats, and associated ecosystem services.

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Section: Biogeography Of Amazonian Cangamentioning

confidence: 99%

Floristic data to support conservation in the Amazonian canga

Silva,

Lovo,

Fonseca-da-Silva

et al. 2023

Biota Neotrop.

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Cangas da Amazônia: a vegetação única de Carajás evidenciada pela lista de fanerógamas

et al. 2018

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Resumo Nas cangas da Floresta Nacional (FLONA) de Carajás e no Parque Nacional dos Campos Ferruginosos (PNCF) foram registradas 856 espécies, distribuídas em 116 famílias de fanerógamas. As famílias mais ricas foram Poaceae (86), Fabaceae (65) e Rubiaceae (46). O hábito herbáceo foi o melhor representado. Dois gêneros, 24 espécies e uma subespécie são apontadas como endêmicas das cangas da área de estudos. Na FLONA de Carajás, a Serra Norte, com maior amostragem, possui 659 espécies de fanerógamas e na Serra Sul foram registradas 545 espécies. Aproximadamente 60% das espécies documentadas na área de estudos, incluindo espécies endêmicas, não possuem registro para o PNCF. Através da lista taxonômica aqui apresentada, foi possível demonstrar considerável distinção entre as cangas da Serra dos Carajás e as do Quadrilátero Ferrífero, em Minas Gerais, apontando também pouca correspondência dessas duas listas com a canga de Corumbá, no Mato Grosso do Sul. A riqueza e singularidade da flora da região, que inclui diversas espécies endêmicas, associada à ameaça a que estão submetidos estes ambientes por atividades de mineração, apontam para a necessidade de um planejamento para conservação das espécies da flora das cangas de Carajás.

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