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

Koch, Ana Kelly; Cardoso, Jesiane Miranda; Hall, Climbiê Ferreira

doi:10.1590/2175-7860201869115

Cited by 12 publications

(6 citation statements)

References 22 publications

(23 reference statements)

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“…The 120 monographs published by the FCC project encompass 40 species that were marked not fully identified, of which around 50% were flagged by the authors as possible new to science (Cruz et al 2015;Koch & Ilkiu-Borges 2016;Chautems et al 2018;Mattos et al 2018;Koch et al 2018;. Of these, a number has been found only on the canga of Carajás, being thus potentially endemic.…”

Section: Endemic Taxamentioning

confidence: 99%

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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Section: Endemic Taxamentioning

confidence: 99%

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

et al. 2018

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“…The most species-rich families and genera found in the SFX coincide with those found in the Flora das cangas de Carajás (Mota et al 2018) and SA (Fonseca-da- , where Cyperaceae, Fabaceae, Poaceae, and Rubiaceae are among the richest plant families. Interestingly, SFX has a much higher number of Orchidaceae species than other surveys of canga in the Amazon (Koch et al 2018;Mota et al 2018;Fonseca-da-Silva et al 2020). The participation of botanical specialists during collecting expeditions enhances floristic studies in the Amazon (Medeiros et al 2014) and elsewhere, and the high number of Orchidaceae in SFX possibly reflects the specific search for this group by J.B. Silva in the region from the 1990's onwards, which may have resulted in a greater sampling effort for this group when compared to other areas.…”

Section: Floristic Composition Of Serra De Campos × Other Canga Outcropsmentioning

confidence: 80%

Iron islands in the Amazon: investigating plant beta diversity of canga outcrops

Andrino¹,

Barbosa-Silva²,

Lovo³

et al. 2020

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The world’s largest mineral iron province, Serra dos Carajás, is home to an open vegetation known as canga, found on top of isolated outcrops rising out of the Amazon rainforest. Over one thousand vascular plants species have been recorded in these canga sites, including 38 edaphic endemics. A new survey adds to our investigation of biogeographic relationships between sixteen canga outcrops and the effect of the distance between site pairs on the number of shared species, regional species turnover and species distribution patterns. Plant collecting expeditions to the westernmost site, the Serra de Campos of São Félix do Xingu (SFX), were carried out followed by the identification of all collected specimens and the creation of a species database, built to perform biogeographical analyses. Floristic relationships among the sites were investigated regarding their similarity, using multivariate analyses. The correlation between canga areas and species richness was tested, as well as the geographical distance between pairs of outcrops and their shared species. Vascular plants at SFX total 254 species including 17 edaphic endemics. All canga sites are grouped with 25% of minimum similarity, and the SFX falls within a large subgroup of outcrops. The total species number shared between site pairs does not change significantly with geographical distance but is positively correlated with the area of each outcrop. Meanwhile, shared endemic species numbers between site pairs decline when geographical distance increases, possibly imposed by the barrier of the rainforest. Our data suggest higher shared similarity between the largest and species-richest sites as opposed to geographically nearby sites, and provide useful insight for drafting conservation and compensation measures for canga locations. The size of the canga outcrops is associated to higher floristic diversity but connectivity among islands also plays a role in their similarity.

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“…(Rocha et al, 2017), Orchidaceae, 2 spp. (Koch et al, 2018), Orobanchaceae, 1 spp. (Scatigna & Mota, 2017), Picramniaceae, 1 sp.…”

Section: List Comparisonmentioning

confidence: 99%

Edaphic Endemism in the Amazon: Vascular Plants of the canga of Carajás, Brazil

et al. 2019

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Amazonia is one of the most diverse biomes worldwide, and, as well as luxuriant forest, it includes mountain areas which, despite their small surface area, display fascinating endemism. In these regions, the specificity of edaphic factors is mirrored by a highly specialised, isolated flora adapted to survive adverse conditions. The Serra dos Carajás in the Brazilian state of Pará is one of world's largest iron ore reserves. Known locally as canga, this ironstone formation occupies an area of 115.9 km 2 , and supports campo rupestre of canga vegetation on outcrops that are mostly in the Floresta Nacional de Carajás (FLONA of Carajás) and Parque Nacional dos Campos Ferruginosos (PNCF). The recent publication of the Flora of the cangas of Carajás lists 856 species of seed plants and 186 species of ferns and lycophytes. This project assessed the canga endemic species growing in the region, and further expeditions guided by SDM were carried out in order to ascertain their distribution outisde the area. Departing from an initial list of 58 putative endemics, the final list comprises 38 species of vascular plants (c. 4% of the local flora). These are distributed in 31 genera and 22 families, including three monotypic genera: Carajasia (Rubiaceae), Monogereion and Parapiqueria (Asteraceae). From these, 24 are classified as Rare Species for Brazil and seven as Highly Restricted Endemic (EEO < 100 km 2). An illustrated account is provided, as well as further SDM to detect other possible areas of distribution based on the studied species. The knowledge generated is aimed at directing appropriate conservation plans for the area.

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

Cited by 12 publications

References 22 publications

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

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

Iron islands in the Amazon: investigating plant beta diversity of canga outcrops

Edaphic Endemism in the Amazon: Vascular Plants of the canga of Carajás, Brazil

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