Search Results - "Turcq, Bruno"
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Tropical South Atlantic influence on Northeastern Brazil precipitation and ITCZ displacement during the past 2300 years
Published in Scientific reports (08-02-2019)“…Recent paleoclimatic studies suggest that changes in the tropical rainbelt across the Atlantic Ocean during the past two millennia are linked to a latitudinal…”
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Diversity of Microbiomes Across a 13,000-Year-Old Amazon Sediment
Published in Microbial ecology (01-10-2023)“…The microbiome is fundamental for understanding bacterial activities in sediments. However, only a limited number of studies have addressed the microbial…”
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Holocene oscillations of Southwest Atlantic shelf circulation based on planktonic foraminifera from an upwelling system (off Cabo Frio, Southeastern Brazil)
Published in Holocene (Sevenoaks) (01-08-2016)“…The Brazil Current (BC) is a relevant feature in the Atlantic Meridional Overturning Circulation (AMOC). Its behavior during slowdown or intense AMOC remains…”
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4
Late-Holocene palaeoenvironmental reconstruction from a lake in the Amazon Rainforest-Tropical Savanna (Cerrado) boundary in Brazil using a multi-proxy approach
Published in Holocene (Sevenoaks) (01-09-2021)“…As an ecotone, the region between the Amazon Rainforest and Tropical Savanna (Cerrado) biomes is, by definition, more susceptible to climate change. Therefore,…”
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Hydroclimate reconstruction during the last 1000 years inferred from the mineralogical and geochemical composition of a sediment core from Lake-Azuei (Haiti)
Published in Holocene (Sevenoaks) (01-07-2023)“…This study aims to reconstruct the hydro-climatic variations over the last 1000 years in Haiti using mineralogical and geochemical composition of well dated…”
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6
The origin of the forest-grassland mosaic of central Cameroon: What we learn from the isotopic geochemistry of soil organic matter
Published in Holocene (Sevenoaks) (01-10-2020)“…The end of the Holocene Humid Period was characterized by the massive collapse of forest ecosystems in central Africa. Was this large-scale environmental…”
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Development of lacustrine primary productivity in the Amazon Basin during the Holocene
Published in Holocene (Sevenoaks) (01-07-2022)“…The Amazon Basin is one of the most productive regions in the world and an important carbon sink. However, lake productivity has varied throughout the…”
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Mineral and elemental indicators of post-glacial changes in sediment delivery and deposition under a western boundary upwelling system (Cabo Frio, southeastern Brazil)
Published in Palaeogeography, palaeoclimatology, palaeoecology (01-03-2016)“…Minerals and elements are important proxies that can provide information about variations in the delivery and deposition of coastal ocean sediments associated…”
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Dust arriving in the Amazon basin over the past 7,500 years came from diverse sources
Published in Communications earth & environment (01-12-2021)“…A large amount of dust from the Sahara reaches the Amazon Basin, as observed with satellite imagery. This dust is thought to carry micronutrients that could…”
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Contrasted distributions of triterpene derivatives in the sediments of Lake Caçó reflect paleoenvironmental changes during the last 20,000 yrs in NE Brazil
Published in Organic geochemistry (01-02-2007)“…Lipid fractions extracted from sediment layers deposited in a small Brazilian lake during the last 20,000 yrs were investigated by gas chromatography–mass…”
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Palaeoecology of a 3-kyr biosedimentary record of a coral reef-supporting carbonate shelf
Published in Continental shelf research (01-11-2013)“…This study assesses the 3-kyr paleoecology and sedimentary evolution of the Abrolhos carbonate shelf, Bahia, Brazil, using a two-meter-long core collected in a…”
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Evaluating levoglucosan as an indicator of biomass burning in Carajás, amazônia: a comparison to the charcoal record
Published in Geochimica et cosmochimica acta (2001)“…We report the use of levoglucosan, a novel molecular marker, to trace contributions from vegetation combustion to sediments. Unlike other indicators used for…”
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13
Delivery and deposition of organic matter in surface sediments of Lagoa do Caçó (Brazil)
Published in Journal of paleolimnology (01-03-2011)“…Elemental and isotopic compositions of organic matter in surficial sediments from five transects across Lagoa do Caçó (Brazil) were analyzed to identify the…”
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14
The Colônia structure, São Paulo, Brazil
Published in Meteoritics & planetary science (01-11-2011)“…– The near‐circular Colônia structure, located in the southern suburbs of the mega‐city of São Paulo, Brazil, has attracted the attention of geoscientists for…”
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Sedimentary geochemistry and foraminiferal assemblages in coral reef assessment of Abrolhos, Southwest Atlantic
Published in Marine micropaleontology (01-10-2012)“…The health of the coral ecosystem at Abrolhos was evaluated using foraminifers and geochemistry. A total of 54 bottom sediment samples was collected for…”
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Pentacyclic triterpene methyl ethers in recent lacustrine sediments (Lagoa do Caçó, Brazil)
Published in Organic geochemistry (01-03-2005)“…The lipid extracts of sediments collected from the Quaternary filling of a tropical lacustrine series (Lagoa do Caçó, Brazil) were investigated using gas…”
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Palynological evidence of the replacement of the hygrophilous forest by field vegetation during the last 7,000 years B.P. in the northern coast of Rio de Janeiro, Brazil
Published in Anais da Academia Brasileira de Ciências (01-09-2011)“…Historians claim that European colonizers of the northern coast of Rio de Janeiro State found vast herbaceous fields when arrived in this region. Hypotheses…”
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The last 50,000 years in the Neotropics (Southern Brazil): evolution of vegetation and climate
Published in Palaeogeography, palaeoclimatology, palaeoecology (01-07-1996)“…In the “Lagoa Campestre” (Lake) of Salitre (19°S, 46°46′W, 970 m elev.), there are plant taxa belonging to many ecological groups that are encountered nowhere…”
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Data-Model comparison for South American Monsoon during the mid-Holocene
Published in Quaternary international (16-11-2012)Get full text
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Paleoclimate of the last two millenia in Northeast Brasil revealed by lake Boqueirão sedimentation
Published in Quaternary international (16-11-2012)Get full text
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