Altitude, vegetation, paleoclimate, and radiocarbon age of the basal layer of peatlands of the Serra do Espinhaço Meridional, Brazil

Silva, Alexandre Christófaro; Horák‐Terra, Ingrid; Barral, Uidemar Morais; Costa, Camila Rodrigues; Gonçalves, Sabrina Thamyres; Pinto, Thiago Almeida Andrade; Silva, Bárbara Pereira Christófaro; Fernandes, José Sebastião Cunha; Filho, João Graciano Mendonça; Vidal‐Torrado, Pablo

doi:10.1016/j.jsames.2020.102728

Cited by 16 publications

(16 citation statements)

References 48 publications

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“…There are lines of evidence supporting important Quaternary fluctuations of precipitation, temperature, and vegetation in SE Brazil (Behling, 2002; Ledru et al, 2005; Salgado‐Labouriau et al, 1998), and in particular in the Espinhaço Range (Chueng et al, 2019; Silva et al, 2020). For example, precipitation has been shown to be strongly modulated by orbital fluctuations (Cruz et al, 2009; Wang et al, 2007), with some speleothem records suggesting a wetter climate starting at 70 ka (Cruz et al, 2009), a timing comparable to the transition time inferred from our inversion results.…”

Section: Discussionmentioning

confidence: 98%

Section: Comparison With Regional Climatic and Geomorphic Recordsmentioning

confidence: 99%

“…Solid and dashed brown curves correspond to expectations for steady-state erosion and a constantly exposed surface, respectively. Production rates are calculated for the average conditions at the sampled sites in the Serra do Cip o (Figure 3), using a time-independent scaling scheme (Stone, 2000) [Color figure can be viewed at wileyonlinelibrary.com] Pleistocene, with occurrences of periods that were wetter and dryer than present-day conditions (Barros & Magalhões Junior, 2020;Chueng et al, 2019;Silva et al, 2020).…”

Section: Detection Of Transience From Tcn Pairsmentioning

confidence: 99%

“…Nowadays, the climate of the Serra do Cipó Range is mesothermal, with mean annual temperature between 18°C and 19°C and mean annual precipitation ranging from 1250 to 1550 mm, with dry winters and wet summers. However, there are lines of evidence, from pedological and geomorphological records, that the region underwent many climatic changes during the Holocene and late Pleistocene, with occurrences of periods that were wetter and dryer than present‐day conditions (Barros & Magalhões Junior, 2020; Chueng et al, 2019; Silva et al, 2020).…”

Section: Settingsmentioning

confidence: 99%

See 3 more Smart Citations

Transient hillslope erosion in slow evolution landscapes

Godard

Salgado

Siamé

et al. 2021

Earth Surf Processes Landf

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Section: Discussionmentioning

confidence: 98%

Section: Comparison With Regional Climatic and Geomorphic Recordsmentioning

confidence: 99%

Section: Detection Of Transience From Tcn Pairsmentioning

confidence: 99%

Section: Settingsmentioning

confidence: 99%

See 2 more Smart Citations

Transient hillslope erosion in slow evolution landscapes

Godard

Salgado

Siamé

et al. 2021

Earth Surf Processes Landf

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“…The occurrence of several Eremanthus species in high altitude campos rupestres areas is likely due to climatic uctuations during the Holocene and previous geological periods(Silva et al 2020). Expansions and contractions of speci c vegetation types resulted in the establishment of campos rupestres as one of the typical altitude vegetation in Brazil(Barbosa 2011).…”

mentioning

confidence: 99%

The future scenario of an iconic tree from the Brazilian Cerrado: perspectives on Eremanthus Less. (Asteraceae) conservation

Alves

Loeuille

2022

Braz. J. Bot

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Characterized as one of the largest biodiversity hotspots, the Cerrado ecoregion houses a wide variety of endemic species. Several threats, such as agricultural expansion and habitat fragmentation, put the species of the Cerrado ecosystems and biodiversity at risk. The genus Eremanthus is frequent in the Cerrado and suffers from intense anthropogenic pressure due to overexploitation mainly for the construction of fences and extraction of essential oil. Environmental suitability, of the Mid-Holocene, present and future (2070), were estimated for the genus in order to characterize the importance of the climate in the species distribution and to analyse the conservation status. The Species Distribution Modelling showed that most species of Eremanthus presented similarities between the environmental suitability of the present and the Mid-Holocene, enabling the identi cation of areas of environmental stability in OSL areas of campos rupestres. The species of the genus were classi ed as Endangered and Vulnerable according to IUCN criteria, presenting very reduced areas of environmental suitability projected in the future and a low percentage of species in Protected Areas, that may in uence possible extinctions of species in the genus. The approaches in this study provide consistent subsidies to assist in conservation planning.

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Paleoenvironmental dynamics in central‐eastern Brazil during the last 23 000 years: tropical peatland record in the Cerrado biome

Costa

Luz

Horák‐Terra

et al. 2022

J Quaternary Science

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The Cerrado biome is the second largest in Brazil, but the evolution of the Cerrado during the late Quaternary is not yet fully known. This study identifies paleoenvironmental changes during the last 23 000 years, based on a tropical mountain peatland record, in the Serra do Espinhaço Meridional in central-eastern Brazil. A multi-proxy approach was used that involved palynological analysis, stable isotopes (δ 13 C, δ 15 N), geochemistry, radiocarbon dating and multivariate statistics derived from a peatland core from Rio Preto (Minas Gerais state). The study reveals a very humid and cold climate during the late Pleistocene, with an increase in temperature and decrease in humidity at the Pleistocene-Holocene transition. During this period there was strong instability in the landscape (episodes of erosion). At the beginning of the Holocene there was a reduction in humidity with greater landscape stability. The current sub-humid climatic conditions seem to have been established in the mid-/late Holocene, with periods of landscape instability. Our findings agree with other Cerrado records that contradict previously established hypotheses, such as the Amazonian Refuge and the Pleistocene Arc.

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Altitude, vegetation, paleoclimate, and radiocarbon age of the basal layer of peatlands of the Serra do Espinhaço Meridional, Brazil

Cited by 16 publications

References 48 publications

Transient hillslope erosion in slow evolution landscapes

Transient hillslope erosion in slow evolution landscapes

The future scenario of an iconic tree from the Brazilian Cerrado: perspectives on Eremanthus Less. (Asteraceae) conservation

Paleoenvironmental dynamics in central‐eastern Brazil during the last 23 000 years: tropical peatland record in the Cerrado biome

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