Anne-Marie Lézine
Dados Biográficos
| ID | 4124437 |
|---|---|
| NOME | Anne-Marie Lézine |
| PRENOMES | Anne-Marie |
| SOBRENOME | Lézine |
| ASSINATURA | LÉZINE A |
| AFILIAÇÕES | Laboratoire des Sciences du Climat et de l'Environnement |
| VERIFICADO | Não |
| TOTAL DE OBRAS | 22 |
| TOTAL DE CITAÇÕES | 65 |
| TOTAL COMO AUTOR | 22 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1989 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2021 |
| ÍNDICE H | 6 |
Quaternary Vegetation Dynamics – The African Pollen Database
This book celebrates the relaunch of the African Pollen Database, presents state-of-the-art of modern and ancient pollen data from sub-Saharan Africa, and promotes Open Access science. Pollen grains are powerful tools for the study of past vegetation dynamics because they preserve well within sedimentary deposits and have a huge diversity in ornamentation that allows different taxa to be determined. The reconstruction of past vegetation from the …
Quaternary Vegetation Dynamics
The origin of the forest-grassland mosaic of central Cameroon
The end of the Holocene Humid Period was characterized by the massive collapse of forest ecosystems in central Africa. Was this large-scale environmental crisis dated between 3300 and 2500 years BP at the origin of the present-day wooded-grassland/forest mosaic of central Cameroon? Here we present carbon isotope data on soil organic matter collected from 29 sites from this area, including the Grassfield plateaus, with the aim of characterizing th…
Temperature variability over Africa during the last 2000 years
A growing number of proxy, historical and instrumental data sets are now available from continental Africa through which past variations in temperature can be assessed. This paper, co-authored by members of the PAGES Africa2k Working Group, synthesises published material to produce a record of temperature variability for Africa as a whole spanning the last 2000 years. The paper focuses on temperature variability during the ‘Medieval Climate Anoma…
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…
Sahara and Sahel vulnerability to climate changes, lessons from the past
Indian Summer Monsoon variations could have affected the early-Holocene woodland expansion in the Near East
Postglacial expansion of deciduous oak woodlands of the Zagros—Anti-Taurus Mountains, a major biome of the Near East, was delayed until the middle Holocene at ~6300 cal. yr BP. The current hypotheses explain this delay as a consequence of a regional aridity during the early Holocene, slow migration rates of forest trees, and/or a long history of land use and agro-pastoralism in this region. In the present paper, support is given to a hypothesis t…
Pollen-inferred Late-Glacial and Holocene climate in southern Balkans (Lake Maliq)
Palaeogeographical reconstructions of Lake Maliq (Korça Basin, Albania) between 14,000 BP and 2000 BP
Étude et prospection
Lera Petrika, Touchais Gilles, Christidou Rozalia, Desruelles Stéphane, Fouache Eric, Lezine Anne-Marie, Magny Michel, Oberweiler Cécile, Prévost-Dermarkar Sandra. Étude et prospection. In: Bulletin de correspondance hellénique. Volume 132, livraison 2, 2008. pp. 875-903
Late Quaternary palynology in marine sediments
High-Resolution Pollen record from Core KW31, Gulf of Guinea, Documents the History of the Lowland Forests of West Equatorial Africa since 40,000 yr ago
Pollen data from core KW31 recovered off the mouth of the Niger River (3°31′1N–05°34ʺ1E; 1181 m water depth) provide an exceptional record of vegetation changes in the West African lowlands between 40,000 and 3500 cal yr B.P. The highly diverse microflora testify for the permanency of rain and secondary forests in the Niger river catchment, at least as gallery formations along rivers, during the last glacial period when dry conditions occurred in…
Estimation de l'effet réservoir 14C marin en mer d'Arabie
Measurements of the marine reservoir effect in the Arabian Sea, from the present to 8685 cal ВС, make it possible to discuss the 14C calibration of marine biomineralisations (shells, otoliths, bioapatite). From the present to 4560 cal ВС, the ΔR (210 ± 15) remains constant in the north-west of Arabian Sea allowing us to insert the 14C dates of many anthropic sites from the coast of the gulf of Oman into classical chronologies. During the early to…
Land–sea correlations for the last glaciation inferred from a pollen and dinocyst record from the Portuguese margin
Pollen and dinoflagellate cyst assemblages from Core SU 81-18 recovered off Portugal (37°46′N, 10°11′W; 3135-m water depth) have been used to document the short-term environmental changes that occurred in southwest Europe since 25,000 yr B.P. The relationship between the oceanic and continental environments has been further examined by the use of other marine proxies (coarse sedimentary fraction, foraminifera) and by comparison with proximal land…
Mangroves of Oman during the late Holocene; climatic implications and impact on human settlements
Man and environment around lake Maliq (southern Albania) during the Late Holocene
A 12,000-Year Pollen Record from Lake Maliq, Albania
Pollen data from Lake Maliq, the first from Albania, contribute new information to the discussion of the vegetational, hydrological, and climatological history of the Balkans since 12,000 yr B.P. During late-glacial time, a perennial lake expanded at Maliq. It was surrounded by a complex vegetation association composed of steppe and mixed forest elements. The highly diverse forest flora suggest that late-glacial forest refugia were more developed…
Holocene Lakes from Ramlat as-Sab'atayn (Yemen) Illustrate the Impact of Monsoon Activity in Southern Arabia
Paleoecology and paleohydrology of the Ramlat as-Sab'atayn (Southern Arabia) are reconstructed from a comparative study including sedimentology, mineralogy, stable isotope ratios of carbonates, and palynology of lacustrine sediments recovered from the al-Hawa depression. The section dates from 8700 to 7200 yr B.P. and records an early phase of flooding followed by distinct lacustrine development from 7800 to 7200 yr B.P., coeval with maximum acti…
Paléolacs et peuplements holocènes du Yémen
The surveys in the Ramlat as-Sabat'ayn started in 1983 and several prehistoric periods have been recognized from the Lower Palaeolithic up to the Bronze Age according to the lithic industry and to many structures. Only one period could accurately be dated about 7,500 BP through the discovery of a paleolake, which corresponds to the early Holocene and which is related to the period of climatic improvement resulting from the intensification of the …
Evidence of Atmospheric Paleocirculation over the Gulf of Guinea since the Last Glacial Maximum
High-resolution pollen and eolian input studies from core KS 84063 in the Gulf of Guinea record the response of the tropical atmospheric circulation to global paleoclimatic events during the last glacial/interglacial transition. Two depositional phases centered around 15,000 and 10,300 yr B.P. are characterized by maximum values of pollen concentration and of eolian activity index (EA1). Pollen spectra record the significant presence of Artemisia…
West African Paleoclimates during the Last Climatic Cycle Inferred from an Atlantic Deep-Sea Pollen Record
Pollen studies of marine sediments from Atlantic deep-sea core V22-196 (13°50′ N-18°57′ W; 3728-m water depth) are used to reconstruct paleoclimates of north tropical west Africa since 140,000 yr B.P. High concentration of pollen, mainly from Saharan and arid littoral zones suggests a strengthened tradewind circulation since ca. 60,000 yr B.P. that became even stronger after 40,000 yr B.P. and reached a maximum 17,000 yr B.P. Periods of eolian tr…
Late Quaternary Vegetation and Climate of the Sahel
Pollen and phytogeographic evidence provides a vegetational history of the Sahel for the period 0–18,000 yr B.P. The zonal vegetation fluctuated latitudinally and its most extreme positions occurred at 18,000 and 8500 yr B.P. The first involved a southward shift of the Sahelian wooded grassland to 10°N under the arid conditions of the last glacial maximum. The second change shows a rapid northward migration of humid vegetation: Guinean elements r…
Temperature variability over Africa during the last 2000 years
A growing number of proxy, historical and instrumental data sets are now available from continental Africa through which past variations in temperature can be assessed. This paper, co-authored by members of the PAGES Africa2k Working Group, synthesises published material to produce a record of temperature variability for Africa as a whole spanning the last 2000 years. The paper focuses on temperature variability during the ‘Medieval Climate Anoma…
Estimation de l'effet réservoir 14C marin en mer d'Arabie
Measurements of the marine reservoir effect in the Arabian Sea, from the present to 8685 cal ВС, make it possible to discuss the 14C calibration of marine biomineralisations (shells, otoliths, bioapatite). From the present to 4560 cal ВС, the ΔR (210 ± 15) remains constant in the north-west of Arabian Sea allowing us to insert the 14C dates of many anthropic sites from the coast of the gulf of Oman into classical chronologies. During the early to…
Paléolacs et peuplements holocènes du Yémen
The surveys in the Ramlat as-Sabat'ayn started in 1983 and several prehistoric periods have been recognized from the Lower Palaeolithic up to the Bronze Age according to the lithic industry and to many structures. Only one period could accurately be dated about 7,500 BP through the discovery of a paleolake, which corresponds to the early Holocene and which is related to the period of climatic improvement resulting from the intensification of the …
Palaeogeographical reconstructions of Lake Maliq (Korça Basin, Albania) between 14,000 BP and 2000 BP
Mangroves of Oman during the late Holocene; climatic implications and impact on human settlements
Indian Summer Monsoon variations could have affected the early-Holocene woodland expansion in the Near East
Postglacial expansion of deciduous oak woodlands of the Zagros—Anti-Taurus Mountains, a major biome of the Near East, was delayed until the middle Holocene at ~6300 cal. yr BP. The current hypotheses explain this delay as a consequence of a regional aridity during the early Holocene, slow migration rates of forest trees, and/or a long history of land use and agro-pastoralism in this region. In the present paper, support is given to a hypothesis t…
Man and environment around lake Maliq (southern Albania) during the Late Holocene
Étude et prospection
Lera Petrika, Touchais Gilles, Christidou Rozalia, Desruelles Stéphane, Fouache Eric, Lezine Anne-Marie, Magny Michel, Oberweiler Cécile, Prévost-Dermarkar Sandra. Étude et prospection. In: Bulletin de correspondance hellénique. Volume 132, livraison 2, 2008. pp. 875-903
Late Quaternary Vegetation and Climate of the Sahel
Pollen and phytogeographic evidence provides a vegetational history of the Sahel for the period 0–18,000 yr B.P. The zonal vegetation fluctuated latitudinally and its most extreme positions occurred at 18,000 and 8500 yr B.P. The first involved a southward shift of the Sahelian wooded grassland to 10°N under the arid conditions of the last glacial maximum. The second change shows a rapid northward migration of humid vegetation: Guinean elements r…
West African Paleoclimates during the Last Climatic Cycle Inferred from an Atlantic Deep-Sea Pollen Record
Pollen studies of marine sediments from Atlantic deep-sea core V22-196 (13°50′ N-18°57′ W; 3728-m water depth) are used to reconstruct paleoclimates of north tropical west Africa since 140,000 yr B.P. High concentration of pollen, mainly from Saharan and arid littoral zones suggests a strengthened tradewind circulation since ca. 60,000 yr B.P. that became even stronger after 40,000 yr B.P. and reached a maximum 17,000 yr B.P. Periods of eolian tr…
Evidence of Atmospheric Paleocirculation over the Gulf of Guinea since the Last Glacial Maximum
High-resolution pollen and eolian input studies from core KS 84063 in the Gulf of Guinea record the response of the tropical atmospheric circulation to global paleoclimatic events during the last glacial/interglacial transition. Two depositional phases centered around 15,000 and 10,300 yr B.P. are characterized by maximum values of pollen concentration and of eolian activity index (EA1). Pollen spectra record the significant presence of Artemisia…
Paléolacs et peuplements holocènes du Yémen
The surveys in the Ramlat as-Sabat'ayn started in 1983 and several prehistoric periods have been recognized from the Lower Palaeolithic up to the Bronze Age according to the lithic industry and to many structures. Only one period could accurately be dated about 7,500 BP through the discovery of a paleolake, which corresponds to the early Holocene and which is related to the period of climatic improvement resulting from the intensification of the …
Holocene Lakes from Ramlat as-Sab'atayn (Yemen) Illustrate the Impact of Monsoon Activity in Southern Arabia
Paleoecology and paleohydrology of the Ramlat as-Sab'atayn (Southern Arabia) are reconstructed from a comparative study including sedimentology, mineralogy, stable isotope ratios of carbonates, and palynology of lacustrine sediments recovered from the al-Hawa depression. The section dates from 8700 to 7200 yr B.P. and records an early phase of flooding followed by distinct lacustrine development from 7800 to 7200 yr B.P., coeval with maximum acti…
A 12,000-Year Pollen Record from Lake Maliq, Albania
Pollen data from Lake Maliq, the first from Albania, contribute new information to the discussion of the vegetational, hydrological, and climatological history of the Balkans since 12,000 yr B.P. During late-glacial time, a perennial lake expanded at Maliq. It was surrounded by a complex vegetation association composed of steppe and mixed forest elements. The highly diverse forest flora suggest that late-glacial forest refugia were more developed…
Man and environment around lake Maliq (southern Albania) during the Late Holocene
Mangroves of Oman during the late Holocene; climatic implications and impact on human settlements
Land–sea correlations for the last glaciation inferred from a pollen and dinocyst record from the Portuguese margin
Pollen and dinoflagellate cyst assemblages from Core SU 81-18 recovered off Portugal (37°46′N, 10°11′W; 3135-m water depth) have been used to document the short-term environmental changes that occurred in southwest Europe since 25,000 yr B.P. The relationship between the oceanic and continental environments has been further examined by the use of other marine proxies (coarse sedimentary fraction, foraminifera) and by comparison with proximal land…
High-Resolution Pollen record from Core KW31, Gulf of Guinea, Documents the History of the Lowland Forests of West Equatorial Africa since 40,000 yr ago
Pollen data from core KW31 recovered off the mouth of the Niger River (3°31′1N–05°34ʺ1E; 1181 m water depth) provide an exceptional record of vegetation changes in the West African lowlands between 40,000 and 3500 cal yr B.P. The highly diverse microflora testify for the permanency of rain and secondary forests in the Niger river catchment, at least as gallery formations along rivers, during the last glacial period when dry conditions occurred in…
Estimation de l'effet réservoir 14C marin en mer d'Arabie
Measurements of the marine reservoir effect in the Arabian Sea, from the present to 8685 cal ВС, make it possible to discuss the 14C calibration of marine biomineralisations (shells, otoliths, bioapatite). From the present to 4560 cal ВС, the ΔR (210 ± 15) remains constant in the north-west of Arabian Sea allowing us to insert the 14C dates of many anthropic sites from the coast of the gulf of Oman into classical chronologies. During the early to…
Late Quaternary palynology in marine sediments
Étude et prospection
Lera Petrika, Touchais Gilles, Christidou Rozalia, Desruelles Stéphane, Fouache Eric, Lezine Anne-Marie, Magny Michel, Oberweiler Cécile, Prévost-Dermarkar Sandra. Étude et prospection. In: Bulletin de correspondance hellénique. Volume 132, livraison 2, 2008. pp. 875-903
Pollen-inferred Late-Glacial and Holocene climate in southern Balkans (Lake Maliq)
Palaeogeographical reconstructions of Lake Maliq (Korça Basin, Albania) between 14,000 BP and 2000 BP
Indian Summer Monsoon variations could have affected the early-Holocene woodland expansion in the Near East
Postglacial expansion of deciduous oak woodlands of the Zagros—Anti-Taurus Mountains, a major biome of the Near East, was delayed until the middle Holocene at ~6300 cal. yr BP. The current hypotheses explain this delay as a consequence of a regional aridity during the early Holocene, slow migration rates of forest trees, and/or a long history of land use and agro-pastoralism in this region. In the present paper, support is given to a hypothesis t…
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…
Sahara and Sahel vulnerability to climate changes, lessons from the past
Temperature variability over Africa during the last 2000 years
A growing number of proxy, historical and instrumental data sets are now available from continental Africa through which past variations in temperature can be assessed. This paper, co-authored by members of the PAGES Africa2k Working Group, synthesises published material to produce a record of temperature variability for Africa as a whole spanning the last 2000 years. The paper focuses on temperature variability during the ‘Medieval Climate Anoma…
The origin of the forest-grassland mosaic of central Cameroon
The end of the Holocene Humid Period was characterized by the massive collapse of forest ecosystems in central Africa. Was this large-scale environmental crisis dated between 3300 and 2500 years BP at the origin of the present-day wooded-grassland/forest mosaic of central Cameroon? Here we present carbon isotope data on soil organic matter collected from 29 sites from this area, including the Grassfield plateaus, with the aim of characterizing th…
Quaternary Vegetation Dynamics – The African Pollen Database
This book celebrates the relaunch of the African Pollen Database, presents state-of-the-art of modern and ancient pollen data from sub-Saharan Africa, and promotes Open Access science. Pollen grains are powerful tools for the study of past vegetation dynamics because they preserve well within sedimentary deposits and have a huge diversity in ornamentation that allows different taxa to be determined. The reconstruction of past vegetation from the …
Quaternary Vegetation Dynamics
Geography (20 obras) · Physical geography (17 obras) · Geology and Paleoclimatology Research (16 obras) · Holocene (14 obras) · Geology (12 obras) · Pollen (12 obras) · Geology (10 obras) · Archaeology (9 obras) · Ecology (9 obras) · Oceanography (8 obras)