Southern Serra do Espinhaço: The Impressive Plateau of Quartzite Ridges

Magalhães, Antônio Pereira; Barros, Luiz Fernando de Paula; Felippe, Miguel Fernandes

doi:10.1007/978-94-017-8023-0_33

Cited by 18 publications

(11 citation statements)

References 10 publications

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“…In Brazil, campo rupestre is best developed on the Cadeia do Espinhaço. This is an ancient and imposing massif of Precambrian crystalline rocks that extends over 1200 km in an approximate north/south direction from Serra do Ouro Branco, near the city of Ouro Preto in Minas Gerais, north to Bahia where the serras comprising this massive range are referred to as Chapada Diamantina (Magalhães et al 2015). Habitat heterogeneity and the countless habitat islands of the Cadeia do Espinhaço that are largely covered with campo rupestre have contributed in a significant way to the rich and extraordinary flora of Minas Gerais which has more angiosperm species (11239) and more endemics (2245) than any of Brazil's 26 other states (Rapini et al 2008;BFG 2015).…”

Section: Distribution Habitats and Endemismmentioning

confidence: 99%

A Monograph of the Brazilian endemic genus Lavoisiera (Melastomataceae: Microlicieae)

Martins

Almeda

2017

Phytotaxa

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A systematic monograph is presented for Lavoisiera, a Brazilian endemic genus of 41 species that is centered in the campo rupestre ecoregion in the Brazilian Planalto south of the Amazon basin, mostly west of the Mata Atlântica (Atlantic Rainforest), and east of the Pantanal. The stronghold for species diversity is the state of Minas Gerais with 36 species, 30 of which are endemic there. This study represents the first comprehensive monograph of the genus based on field work across its distributional range, complemented by examination of over 3620 specimens from 35 herbaria. An evaluation of taxonomic characters used in the long-standing sectional classification of the genus has led to its abandonment because it is based on artificial characters and does not provide a sound working hypothesis of infrageneric relationships. Eight new species are described: L. arachnoidea, L. belinelloi, L. canastrensis, L. daviesiana, L. minima, L. rundeliana, L. setosa, and L. vestita; lectotypifications are provided for L. caryophyllea, L. chamaepitys, L. glandulifera, L. pulchella, and L. senae; and 44 epithets are relegated to synonymy. An identification key, full synonymy, descriptions, habitat and phenological information, distribution maps, diagnostic illustrations, images of representative species in the field, and geospatial conservation assessments are provided for all species based on IUCN criteria. SEM images of seed morphology are presented for nearly half of the species along with camera lucida drawings of meiotic chromosome figures for selected species, and an index to numbered collections examined.Key words: campo rupestre, Cerrado biome, conservation, endemism, Myrtales, neotropics ResumoApresentamos uma monografia sistemática para Lavoisiera, um gênero brasileiro endêmico com 41 espécies, cuja ocorrência é centrada na ecorregião de campo rupestre no Planalto Brasileiro, ao sul da Bacia Amazônica, principalmente a oeste da Mata Atlântica, e a leste do Pantanal. O principal reduto da diversidade de espécies do gênero é o estado de Minas Gerais, com 36 espécies, 30 das quais são ali endêmicas. Este estudo representa a primeira monografia abrangente do gênero baseada em trabalho de campo, cobrindo toda a extensão de sua área de distribuição, e complementado pelo exame de mais de 3620 espécimes de 35 herbários. Uma avaliação dos caracteres taxonômicos tradicionalmente utilizados na classificação seccional do gênero nos levou ao abandono da mesma, por ser baseada em caracteres artificiais e não fornecer uma hipótese operacional sólida sobre as relações infragenéricas. Oito novas espécies são descritas:vestita; lectotipificações são apresentadas para L. caryrophyllea, L. chamaepitys, L. pulchella e L. senae; e 44 epítetos são reduzidos à sinonímia. Uma chave de identificação, sinonímia completa, descrições, habitat, informações• Phytotaxa 315 (1) © 2017 Magnolia Press fenológicas, mapas de distribuição, ilustrações diagnósticas, imagens de espécies representativas no campo, e análises geoespaciais de conservaçã...

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Section: Distribution Habitats and Endemismmentioning

confidence: 99%

A Monograph of the Brazilian endemic genus Lavoisiera (Melastomataceae: Microlicieae)

Martins

Almeda

2017

Phytotaxa

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“…Geomorphologically, the mountains at Serra do Cipó occur within a narrow width of 30 km from east to west, where impressive rock walls are arranged in parallel in an approximate north-south direction (Magalhães Junior et al 2015). In the Diamantina Plateau region, the Espinhaço is much wider, reaching 90 km, and rocky outcrops occur in numerous quartzite monadnocks (Magalhães Junior et al 2015), with large blocks grouped in a disorganized manner or distributed on scattered hills across an open field (see Figure 2F). In the Central and North sectors of the species range, rocky outcrops are highly isolated in smaller highland areas.…”

Section: Discussionmentioning

confidence: 99%

Geographic range and conservation of the Cipo CanasteroAsthenes luizae, an endemic furnariid of Brazilian sky islands

Freitas

Costa

Chaves

et al. 2019

Bird Conservation International

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Summary Cipo Canastero Asthenes luizae is a relict ovenbird restricted to rocky outcrops at high elevations within the campo rupestre vegetation of the Espinhaço Range in the state of Minas Gerais, south-eastern Brazil. This poorly known species is considered ‘Near Threatened’, but recent studies have suggested that it should be listed under a higher category of threat. To contribute to the knowledge of this species and its conservation assessment and related planning, we compiled all literature records of the species distribution (n = 16 locations), collected new data on its occurrence (n = 72 locations), and calculated its geographic range using four different approaches. First, we defined the sky islands where the species occurs (nine units) using the lowest elevation value recorded (1,100 m asl) as a cut-off. Second, we performed species distribution modelling (SDM) across the sky islands and identified an area of 2,225.21 km2. Third, we measured the species’ extent of occurrence (EOO = 24,555.85 km2) and used SDM to estimate its upper limit (EOOup = 30,697.58 km2). Fourth, we measured the area of occupancy (AOO = 228 km2) and used SDM to estimate its upper limit (AOOup = 1,827.39 km2). We analysed the Cipo Canastero sky islands in terms of landscape metrics including size, isolation, protected area coverage, shape index, core area index, and proportion covered by SDM. We observed a very fragmented distribution, especially in the North sector of the species distribution, composed of small and isolated populations (separated by up to 112 km); the South sector is the core of its distribution and is composed of larger, more connected patches with differences in shape complexity that are not strongly influenced by an edge effect. The range sizes calculated, along with other reported information regarding population and habitat trends, justifies the inclusion of the species in at least the ‘Vulnerable’ category.

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“…1a) 1 . Most campos rupestres occur along the Espinhaço range, a Proterozoic Quartzite formation, with slow-disintegrating parent material 2 . Despite containing some of the world’s most P-impoverished soils 3 , the campos rupestres are a biodiversity hotspot that harbors exceptional diversity and endemism.…”

Section: Background and Summarymentioning

confidence: 99%

Microbiomes of Velloziaceae from phosphorus-impoverished soils of the campos rupestres, a biodiversity hotspot

et al. 2019

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The rocky, seasonally-dry and nutrient-impoverished soils of the Brazilian campos rupestre s impose severe growth-limiting conditions on plants. Species of a dominant plant family, Velloziaceae, are highly specialized to low-nutrient conditions and seasonal water availability of this environment, where phosphorus (P) is the key limiting nutrient. Despite plant-microbe associations playing critical roles in stressful ecosystems, the contribution of these interactions in the campos rupestres remains poorly studied. Here we present the first microbiome data of Velloziaceae spp. thriving in contrasting substrates of campos rupestres . We assessed the microbiomes of Vellozia epidendroides , which occupies shallow patches of soil, and Barbacenia macrantha , growing on exposed rocks. The prokaryotic and fungal profiles were assessed by rRNA barcode sequencing of epiphytic and endophytic compartments of roots, stems, leaves and surrounding soil/rocks. We also generated root and substrate (rock/soil)-associated metagenomes of each plant species. We foresee that these data will contribute to decipher how the microbiome contributes to plant functioning in the campos rupestres , and to unravel new strategies for improved crop productivity in stressful environments.

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Southern Serra do Espinhaço: The Impressive Plateau of Quartzite Ridges

Cited by 18 publications

References 10 publications

A Monograph of the Brazilian endemic genus Lavoisiera (Melastomataceae: Microlicieae)

A Monograph of the Brazilian endemic genus Lavoisiera (Melastomataceae: Microlicieae)

Geographic range and conservation of the Cipo CanasteroAsthenes luizae, an endemic furnariid of Brazilian sky islands

Microbiomes of Velloziaceae from phosphorus-impoverished soils of the campos rupestres, a biodiversity hotspot

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