Annie Vincens
Biographic Data
| ID | 3529057 |
|---|---|
| NAME | Annie Vincens |
| GIVEN NAMES | Annie |
| FAMILY NAME | Vincens |
| SIGNATURE | VINCENS A |
| AFFILIATIONS | Centre National de la Recherche Scientifique |
| VERIFIED | No |
| TOTAL WORKS | 8 |
| TOTAL CITATIONS | 16 |
| WORKS AS AUTHOR | 8 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1993 |
| LATEST PUBLICATION YEAR | 2012 |
| H-INDEX | 2 |
Effect of aridity and rainfall seasonality on vegetation in the southern tropics of East Africa during the Pleistocene/Holocene transition
Fossil pollen analyses from northern Lake Malawi, southeast Africa, provide a high-resolution record of vegetation change during the Pleistocene/Holocene transition (~ 18–9 ka). Recent studies of local vegetation from lowland sites have reported contrasting rainfall signals during the Younger Dryas (YD). The Lake Malawi record tracks regional vegetation changes and allows comparison with other tropical African records identifying vegetation openi…
A late-Holocene charcoal record from Lake Masoko, SW Tanzania
Charcoal analysis from a short core in a small tropical crater lake (Lake Masoko, SW Tanzania) reveals changes in charred-particle deposition and properties, consistent with high climatic variability for the last 4200 years. This is evidenced by automated image analysis of charcoal size distributions, thermal resistant carbon (soot) and black carbon elemental analysis. Charcoal-particle transport in the lake decreases during dry spells, and incre…
A Reply to Marchant and Hooghiemstra
International audience
Fossil pollen from the Upper Humbu Formation of Peninj (Tanzania)
The sensitivity of a Tanzanian crater lake to catastrophic tephra input and four millennia of climate change
Diatom genera in many large East African lakes change little throughout the Holocene period suggesting relatively stable ecological conditions and some resilience to environmental change. Ecosystem stability is less common in smaller, more sensitive lakes, such as those within volcanic craters, where external impacts can cause abrupt and rapid fluctuations. A 4100-year diatom and cyanobacteria pigment record from Lake Massoko, a volcanic crater l…
Late Holocene Climatic Changes in Western Equatorial Africa Inferred from Pollen from Lake Sinnda, Southern Congo
Pollen analysis of two cores from the Lake Sinnda, located in one of the driest areas of the southern Congo, reveals a history of vegetation and climate in this region during the past 5000 yr. A major change centered around 3000–2500 yr B.P. is indicated by an abrupt decrease in forest pollen and by a corresponding increase in grassland pollen. Concurrent drying up of the lake shows that climate, in particular aridity, was the major cause of this…
Phytoliths
Pollen-Derived Rainfall and Temperature Estimates from Lake Tanganyika and Their Implication for Late Pleistocene Water Levels
Palaeoclimatic estimates of mean annual temperature and rainfall in the southern Tanganyika basin between 25,000 and 9000 yr B.P. have been established from two pollen sequences based on the best-analogue method. The results give evidence of a mean temperature decrease of about 4.2°C during the last glaciation, a value consistent with that previously obtained in the catchment area on the Burundi Highlands. This cooling was synchronous with a decr…
Fossil pollen from the Upper Humbu Formation of Peninj (Tanzania)
The sensitivity of a Tanzanian crater lake to catastrophic tephra input and four millennia of climate change
Diatom genera in many large East African lakes change little throughout the Holocene period suggesting relatively stable ecological conditions and some resilience to environmental change. Ecosystem stability is less common in smaller, more sensitive lakes, such as those within volcanic craters, where external impacts can cause abrupt and rapid fluctuations. A 4100-year diatom and cyanobacteria pigment record from Lake Massoko, a volcanic crater l…
A late-Holocene charcoal record from Lake Masoko, SW Tanzania
Charcoal analysis from a short core in a small tropical crater lake (Lake Masoko, SW Tanzania) reveals changes in charred-particle deposition and properties, consistent with high climatic variability for the last 4200 years. This is evidenced by automated image analysis of charcoal size distributions, thermal resistant carbon (soot) and black carbon elemental analysis. Charcoal-particle transport in the lake decreases during dry spells, and incre…
Pollen-Derived Rainfall and Temperature Estimates from Lake Tanganyika and Their Implication for Late Pleistocene Water Levels
Palaeoclimatic estimates of mean annual temperature and rainfall in the southern Tanganyika basin between 25,000 and 9000 yr B.P. have been established from two pollen sequences based on the best-analogue method. The results give evidence of a mean temperature decrease of about 4.2°C during the last glaciation, a value consistent with that previously obtained in the catchment area on the Burundi Highlands. This cooling was synchronous with a decr…
Phytoliths
Late Holocene Climatic Changes in Western Equatorial Africa Inferred from Pollen from Lake Sinnda, Southern Congo
Pollen analysis of two cores from the Lake Sinnda, located in one of the driest areas of the southern Congo, reveals a history of vegetation and climate in this region during the past 5000 yr. A major change centered around 3000–2500 yr B.P. is indicated by an abrupt decrease in forest pollen and by a corresponding increase in grassland pollen. Concurrent drying up of the lake shows that climate, in particular aridity, was the major cause of this…
The sensitivity of a Tanzanian crater lake to catastrophic tephra input and four millennia of climate change
Diatom genera in many large East African lakes change little throughout the Holocene period suggesting relatively stable ecological conditions and some resilience to environmental change. Ecosystem stability is less common in smaller, more sensitive lakes, such as those within volcanic craters, where external impacts can cause abrupt and rapid fluctuations. A 4100-year diatom and cyanobacteria pigment record from Lake Massoko, a volcanic crater l…
A Reply to Marchant and Hooghiemstra
International audience
Fossil pollen from the Upper Humbu Formation of Peninj (Tanzania)
A late-Holocene charcoal record from Lake Masoko, SW Tanzania
Charcoal analysis from a short core in a small tropical crater lake (Lake Masoko, SW Tanzania) reveals changes in charred-particle deposition and properties, consistent with high climatic variability for the last 4200 years. This is evidenced by automated image analysis of charcoal size distributions, thermal resistant carbon (soot) and black carbon elemental analysis. Charcoal-particle transport in the lake decreases during dry spells, and incre…
Effect of aridity and rainfall seasonality on vegetation in the southern tropics of East Africa during the Pleistocene/Holocene transition
Fossil pollen analyses from northern Lake Malawi, southeast Africa, provide a high-resolution record of vegetation change during the Pleistocene/Holocene transition (~ 18–9 ka). Recent studies of local vegetation from lowland sites have reported contrasting rainfall signals during the Younger Dryas (YD). The Lake Malawi record tracks regional vegetation changes and allows comparison with other tropical African records identifying vegetation openi…
Geography (7 works) · Geology and Paleoclimatology Research (6 works) · Ecology (5 works) · Geology (5 works) · Holocene (5 works) · Physical geography (5 works) · Pleistocene-Era Hominins and Archaeology (5 works) · Climate change (4 works) · Paleontology (4 works) · Ecology (3 works)