Jean Maley
Biographic Data
| ID | 111643 |
|---|---|
| NAME | Jean Maley |
| GIVEN NAMES | Jean |
| FAMILY NAME | Maley |
| SIGNATURE | MALEY J |
| AFFILIATIONS | Centre National de la Recherche Scientifique |
| VERIFIED | No |
| TOTAL WORKS | 15 |
| TOTAL CITATIONS | 78 |
| WORKS AS AUTHOR | 15 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1966 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 4 |
The Sangha River Interval, Its Earliest Village Settlements, and the Bantu-Speakers’ Expansion During the Late Holocene (Cameroon, Central African Republic, Congo Republic)
Late Holocene forest contraction and fragmentation in central Africa
During the warmer Holocene Period, two major climatic crises affected the Central African rainforests. The first crisis, around 4000 cal yr BP, caused the contraction of the forest in favor of savanna expansion at its northern and southern periphery. The second crisis, around 2500 cal yr BP, resulted in major perturbation at the forest core, leading to forest disturbance and fragmentation with a rapid expansion of pioneer-type vegetation, and a m…
African Palaeoclimate and Human Response
Populations and Climatic Evolution in North Tropical Africa from the End of the Neolithic to the Dawn of the Modern Era
Middle to Late Holocene Paleoclimatic Change and the Early Bantu Expansion in the Rain Forests of Western Central Africa
This article reviews evidence from biogeography, palynology, geology, historical linguistics, and archaeology and presents a new synthesis of the paleoclimatic context in which the early Bantu expansion took place. Paleoenvironmental data indicate that a climate crisis affected the Central African forest block during the Holocene, first on its periphery around 4000 BP and later at its core around 2500 BP.We argue here that both phases had an impa…
Peuples et évolution climatique en Afrique nord-tropicale, de la fin du Néolithique à l’aube de l’époque moderne
La fin du Néolithique, au cours du IIIe millénaire BP, a correspondu à l’affaiblissement des périodes humides et à la mise en place de la géographie actuelle dans la zone sud-saharienne et sahélienne, qui s’étend de l’Atlantique au lac Tchad. Depuis cette époque le climat a cependant continué à beaucoup varier. La succession des différents épisodes climatiques, phases humides ou phases arides – et leurs interactions complexes –, est précisée. Ces…
Seasonality change and the third millennium BP rainforest crisis in southern Cameroon (Central Africa)
The third millennium BP crisis of the central African rainforest is not sufficiently understood. The low resolution of most pollen profiles and a large plateau of the calibration curve aggravate the exact dating of the event, and its causal climatic parameters are debated. We present a high-resolution pollen profile from the swamp site Nyabessan in the southern Cameroonian rainforest, covering the period 3100-2300 cal yr BP. Between 3100 and 2500…
Lowland rainforest response to hydrological changes during the last 1500 years in Gabon, Western Equatorial Africa
Pollen and δ 13 C TOM data obtained from two contrasting lake sequences (Lakes Kamalété and Nguène), located 200 km apart in the lowland rainforest of Gabon, provide complementary local and regional 1500-yr records of high resolution (15–30 yr) vegetation change. A combination of aquatic, semi-aquatic and terrestrial pollen showed in both records that the tropical rainforest increased during periods of high rainfall and decreased during drought i…
Climatic instability in west equatorial Africa during the Mid- and Late Holocene
Vegetation changes during the past 1300 years in western equatorial Afnrca
Vegetation changes during the past 1300 years are reconstructed in western equatorial Africa using a high-resolution pollen record from Lake Kamalete This small marshy basin (c. 5-7 ha) is located in forest-savanna mosaic in Lope Reserve (043'S, 116'E), central Gabon. The Kamalete pollen data show the persistence over the past 1300 years of a relatively stable forest-savanna mosaic, associated with significant changes of the forest component. Thr…
A Catastrophic Destruction of African Forests about 2,500 Years Ago Still Exerts a Major Influence on Present Vegetation Formations
IDS BulletinVolume 33, Issue 1 p. 13-30 A Catastrophic Destruction of African Forests about 2,500 Years Ago Still Exerts a Major Influence on Present Vegetation Formations Jean Maley, Jean Maley The author is grateful to James Fairhead for his translation of this article from the original French, and to Melissa Leach and James Fairhead for their invitation to the IDS workshiop 'Changing Perspectives on Forests' in March 2001. This is Institut des…
Elaeis guineensis Jacq. (oil palm) fluctuations in central Africa during the late Holocene
Dust, Clouds, Rain Types, and Climatic Variations in Tropical North Africa
Dust and processes of raindrop formation in the clouds play a very important role in the climatic evolution of tropical north Africa. Sedimentologic, stratigraphic, pedologic, geomorphologic, and palynologic data converge to show that a major environmental change occurred in tropical Africa about 7000 yr B.P. In the Sudanian and Sudano–Guinean zones (wet tropical zone), from 15,000 to 7000 yr B.P., rivers deposited mostly clay, while from 7000 to…
Remarques sur quelques sites préhistoriques de la vallée du Nil (Deuxième Cataracte)
Maley Jean. Remarques sur quelques sites préhistoriques de la vallée du Nil (Deuxième Cataracte). In: Bulletin de la Société préhistorique française. Comptes rendus des séances mensuelles, tome 63, n°2, 1966. pp. 71-72
Une industrie sur galet de la vallée du Nil (Soudan)
Chavaillon Jean, Maley Jean. Une industrie sur galet de la vallée du Nil (Soudan). In: Bulletin de la Société préhistorique française. Comptes rendus des séances mensuelles, tome 63, n°2, 1966. pp. 65-70
Middle to Late Holocene Paleoclimatic Change and the Early Bantu Expansion in the Rain Forests of Western Central Africa
This article reviews evidence from biogeography, palynology, geology, historical linguistics, and archaeology and presents a new synthesis of the paleoclimatic context in which the early Bantu expansion took place. Paleoenvironmental data indicate that a climate crisis affected the Central African forest block during the Holocene, first on its periphery around 4000 BP and later at its core around 2500 BP.We argue here that both phases had an impa…
A Catastrophic Destruction of African Forests about 2,500 Years Ago Still Exerts a Major Influence on Present Vegetation Formations
IDS BulletinVolume 33, Issue 1 p. 13-30 A Catastrophic Destruction of African Forests about 2,500 Years Ago Still Exerts a Major Influence on Present Vegetation Formations Jean Maley, Jean Maley The author is grateful to James Fairhead for his translation of this article from the original French, and to Melissa Leach and James Fairhead for their invitation to the IDS workshiop 'Changing Perspectives on Forests' in March 2001. This is Institut des…
Populations and Climatic Evolution in North Tropical Africa from the End of the Neolithic to the Dawn of the Modern Era
Vegetation changes during the past 1300 years in western equatorial Afnrca
Vegetation changes during the past 1300 years are reconstructed in western equatorial Africa using a high-resolution pollen record from Lake Kamalete This small marshy basin (c. 5-7 ha) is located in forest-savanna mosaic in Lope Reserve (043'S, 116'E), central Gabon. The Kamalete pollen data show the persistence over the past 1300 years of a relatively stable forest-savanna mosaic, associated with significant changes of the forest component. Thr…
African Palaeoclimate and Human Response
Peuples et évolution climatique en Afrique nord-tropicale, de la fin du Néolithique à l’aube de l’époque moderne
La fin du Néolithique, au cours du IIIe millénaire BP, a correspondu à l’affaiblissement des périodes humides et à la mise en place de la géographie actuelle dans la zone sud-saharienne et sahélienne, qui s’étend de l’Atlantique au lac Tchad. Depuis cette époque le climat a cependant continué à beaucoup varier. La succession des différents épisodes climatiques, phases humides ou phases arides – et leurs interactions complexes –, est précisée. Ces…
Remarques sur quelques sites préhistoriques de la vallée du Nil (Deuxième Cataracte)
Maley Jean. Remarques sur quelques sites préhistoriques de la vallée du Nil (Deuxième Cataracte). In: Bulletin de la Société préhistorique française. Comptes rendus des séances mensuelles, tome 63, n°2, 1966. pp. 71-72
Une industrie sur galet de la vallée du Nil (Soudan)
Chavaillon Jean, Maley Jean. Une industrie sur galet de la vallée du Nil (Soudan). In: Bulletin de la Société préhistorique française. Comptes rendus des séances mensuelles, tome 63, n°2, 1966. pp. 65-70
Dust, Clouds, Rain Types, and Climatic Variations in Tropical North Africa
Dust and processes of raindrop formation in the clouds play a very important role in the climatic evolution of tropical north Africa. Sedimentologic, stratigraphic, pedologic, geomorphologic, and palynologic data converge to show that a major environmental change occurred in tropical Africa about 7000 yr B.P. In the Sudanian and Sudano–Guinean zones (wet tropical zone), from 15,000 to 7000 yr B.P., rivers deposited mostly clay, while from 7000 to…
Elaeis guineensis Jacq. (oil palm) fluctuations in central Africa during the late Holocene
A Catastrophic Destruction of African Forests about 2,500 Years Ago Still Exerts a Major Influence on Present Vegetation Formations
IDS BulletinVolume 33, Issue 1 p. 13-30 A Catastrophic Destruction of African Forests about 2,500 Years Ago Still Exerts a Major Influence on Present Vegetation Formations Jean Maley, Jean Maley The author is grateful to James Fairhead for his translation of this article from the original French, and to Melissa Leach and James Fairhead for their invitation to the IDS workshiop 'Changing Perspectives on Forests' in March 2001. This is Institut des…
Vegetation changes during the past 1300 years in western equatorial Afnrca
Vegetation changes during the past 1300 years are reconstructed in western equatorial Africa using a high-resolution pollen record from Lake Kamalete This small marshy basin (c. 5-7 ha) is located in forest-savanna mosaic in Lope Reserve (043'S, 116'E), central Gabon. The Kamalete pollen data show the persistence over the past 1300 years of a relatively stable forest-savanna mosaic, associated with significant changes of the forest component. Thr…
Climatic instability in west equatorial Africa during the Mid- and Late Holocene
Lowland rainforest response to hydrological changes during the last 1500 years in Gabon, Western Equatorial Africa
Pollen and δ 13 C TOM data obtained from two contrasting lake sequences (Lakes Kamalété and Nguène), located 200 km apart in the lowland rainforest of Gabon, provide complementary local and regional 1500-yr records of high resolution (15–30 yr) vegetation change. A combination of aquatic, semi-aquatic and terrestrial pollen showed in both records that the tropical rainforest increased during periods of high rainfall and decreased during drought i…
Seasonality change and the third millennium BP rainforest crisis in southern Cameroon (Central Africa)
The third millennium BP crisis of the central African rainforest is not sufficiently understood. The low resolution of most pollen profiles and a large plateau of the calibration curve aggravate the exact dating of the event, and its causal climatic parameters are debated. We present a high-resolution pollen profile from the swamp site Nyabessan in the southern Cameroonian rainforest, covering the period 3100-2300 cal yr BP. Between 3100 and 2500…
Peuples et évolution climatique en Afrique nord-tropicale, de la fin du Néolithique à l’aube de l’époque moderne
La fin du Néolithique, au cours du IIIe millénaire BP, a correspondu à l’affaiblissement des périodes humides et à la mise en place de la géographie actuelle dans la zone sud-saharienne et sahélienne, qui s’étend de l’Atlantique au lac Tchad. Depuis cette époque le climat a cependant continué à beaucoup varier. La succession des différents épisodes climatiques, phases humides ou phases arides – et leurs interactions complexes –, est précisée. Ces…
African Palaeoclimate and Human Response
Populations and Climatic Evolution in North Tropical Africa from the End of the Neolithic to the Dawn of the Modern Era
Middle to Late Holocene Paleoclimatic Change and the Early Bantu Expansion in the Rain Forests of Western Central Africa
This article reviews evidence from biogeography, palynology, geology, historical linguistics, and archaeology and presents a new synthesis of the paleoclimatic context in which the early Bantu expansion took place. Paleoenvironmental data indicate that a climate crisis affected the Central African forest block during the Holocene, first on its periphery around 4000 BP and later at its core around 2500 BP.We argue here that both phases had an impa…
Late Holocene forest contraction and fragmentation in central Africa
During the warmer Holocene Period, two major climatic crises affected the Central African rainforests. The first crisis, around 4000 cal yr BP, caused the contraction of the forest in favor of savanna expansion at its northern and southern periphery. The second crisis, around 2500 cal yr BP, resulted in major perturbation at the forest core, leading to forest disturbance and fragmentation with a rapid expansion of pioneer-type vegetation, and a m…
The Sangha River Interval, Its Earliest Village Settlements, and the Bantu-Speakers’ Expansion During the Late Holocene (Cameroon, Central African Republic, Congo Republic)
Geography (13 works) · Geology and Paleoclimatology Research (9 works) · Physical geography (9 works) · Pleistocene-Era Hominins and Archaeology (9 works) · Biology (7 works) · Climate change (6 works) · Archaeology (5 works) · Ecology (5 works) · Geology (5 works) · Geology (5 works)