Holocene paleoenvironmental reconstruction in the Eastern Amazonian Basin: Comprido Lake

Moreira, Luciane Silva; Moreira-Turcq, Patrícia; Cordeiro, Renato Campello; Turcq, Bruno; Caquineau, Sandrine; Viana, João Cláudio Cerqueira; Brandini, Nilva

doi:10.1016/j.jsames.2012.12.012

Cited by 23 publications

(25 citation statements)

References 38 publications

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“…6) and chlorophyll derivatives (Moreira et al, 2013a). The charcoal accumulation rate is relatively stable and low during this period at a mean rate of 1.25 × 10 4 particles cm −2 years −1 .…”

Section: Holocene Palaeohydrological Changes and Charcoal Deposition mentioning

confidence: 81%

“…6), chlorophyll derivatives and Aulacoseira sp. (Moreira et al, 2013a). Climate remained humid throughout the late Holocene in this region, and the last 3000 cal years BP were characterised by the highest lake levels.…”

Section: Holocene Palaeohydrological Changes and Charcoal Deposition mentioning

confidence: 87%

“…Temperature increases related to the Holocene Thermal Maximum are characterised by relatively warm climates between 11,000 and 5000 years BP as indicated by numerous proxy records (Renssen et al, 2012). The temperature increases during early to middle Holocene are associated with major changes in the precipitation/evaporation balance that are considered responsible for regional decrease in hydrological balance recorded by low lake levels during the mid-Holocene in Amazonia (Baker et al, 2001;Cordeiro et al, 2008;Moreira et al, 2012Moreira et al, , 2013aTurcq et al, 2002a,b) and an increase in fire occurrences. Melo and Marengo (2008) reconstructed high temperature and low precipitation in Amazonia sectors based on model simulations of mid-Holocene conditions.…”

Section: Synthesis and Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Palaeofires in Amazon: Interplay between land use change and palaeoclimatic events

Cordeiro

Turcq

Moreira

et al. 2014

Palaeogeography, Palaeoclimatology, Palaeoecology

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Section: Holocene Palaeohydrological Changes and Charcoal Deposition mentioning

confidence: 81%

Section: Holocene Palaeohydrological Changes and Charcoal Deposition mentioning

confidence: 87%

Section: Synthesis and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Palaeofires in Amazon: Interplay between land use change and palaeoclimatic events

Cordeiro

Turcq

Moreira

et al. 2014

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…The homogeneity of the radiocarbon ages contrasts with the heterogeneity of sediment, which also appears in the geochemical parameters (e.g. Total Organic Carbon in MAR1, Moreira et al, 2013).…”

Section: Lithology and Chronologymentioning

confidence: 99%

“…All these authors highlight the importance of these floodplain lakes to sediment accumulation. Sediment storage can occur at different timescales (from hundreds to thousands of years) (Dunne et al, 1998;Behling and Costa, 2000;Moreira-Turcq et al, 2004), and it is strongly influenced by the hydrodynamics of the Amazon River (Irion et al, 2006(Irion et al, , 2010Moreira et al, 2012Moreira et al, , 2013. Mertes et al (1996) estimated that 80% of the material being transported by the Amazon passes through the floodplain lake systems.…”

Section: Introductionmentioning

confidence: 99%

A 2700calyr BP extreme flood event revealed by sediment accumulation in Amazon floodplains

Turcq¹,

Moreira

Amorim

et al. 2014

Palaeogeography, Palaeoclimatology, Palaeoecology

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The optical properties of river and floodplain waters in the Amazon River Basin: Implications for satellite‐based measurements of suspended particulate matter

et al. 2015

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Satellite images can now be used to assess river sediment discharge, and systematic studies over rivers and lakes are required to support such applications and document the variability of inland water optical properties at the watershed scale. The optical properties of the Amazon Basin waters were analyzed from in situ measurements of the remote sensing reflectance (R rs ) at 279 stations and downwelling diffuse attenuation coefficients (K d ) at 133 stations. Measurements of the apparent optical properties, suspended particulate matter (SPM) contents, and characteristics and colored dissolved organic matter (CDOM) absorption spectra were performed during 16 cruises along the main Amazonian Rivers draining the Andes and for some tributaries. Surface-suspended sediment granulometry and mineralogy showed a stable distribution at the catchment scale, even over large distances and between tributaries. The particle number-size distribution was best described using a segmented distribution with a slope of 2.2 for the fine range (1-15 μm), and the CDOM absorption coefficient at 440 nm varied from 1.8 to 7.9 m À1 . Overall, both R rs and K d were strongly correlated with SPM, although strong CDOM absorption limited the use of the blue spectrum. Reflectance saturation from blue to red was observed at approximately 100 g m À3 , whereas the near-infrared (NIR) wavelength enabled the monitoring of the full SPM range (5-620 g m À3 ). In contrast, K d showed no saturation for SPM from green to NIR, and a linear model was calculated. The use of the reflectance ratio was investigated and shown to improve the suspended sediment concentration retrieval performance.

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Holocene paleoenvironmental reconstruction in the Eastern Amazonian Basin: Comprido Lake

Cited by 23 publications

References 38 publications

Palaeofires in Amazon: Interplay between land use change and palaeoclimatic events

Palaeofires in Amazon: Interplay between land use change and palaeoclimatic events

A 2700calyr BP extreme flood event revealed by sediment accumulation in Amazon floodplains

The optical properties of river and floodplain waters in the Amazon River Basin: Implications for satellite‐based measurements of suspended particulate matter

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