Jacques‐louis De Beaulieu
Datos Biográficos
| ID | 4003573 |
|---|---|
| NOMBRE | Jacques‐louis De Beaulieu |
| NOMBRES | Jacques‐louis |
| APELLIDO | De Beaulieu |
| FIRMA | DE BEAULIEU J L |
| AFILIACIONES | Centre National de la Recherche Scientifique |
| VERIFICADO | No |
| TOTAL DE OBRAS | 43 |
| TOTAL DE CITAS | 230 |
| TOTAL COMO AUTOR | 43 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 1994 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2023 |
| ÍNDICE H | 10 |
Woodland use in treeless landscapes? A compilation of botanical data from NE Iran during the Sasanian Empire
Compositional turnover and variation in Eemian pollen sequences in Europe
Palaeoecological Insights into Agri-Horti-Cultural and Pastoral Practices Before, During and After the Sasanian Empire
Palaeoecological Insights into Agri-Horti-Cultural and Pastoral Practices Before, During and After the Sasanian Empire
Pollen data obtained from radiocarbon-dated sediments of several peat bogs and lakes located in different parts of Iran and surrounding areas have recently provided invaluable new information on agricultural practices during the Persian empires, from the Achaemenids to the Sasanians. A review of the published and unpublished data has revealed distinct phases of intensified tree cultivation and pastoral activities during this era.
Late-glacial and Holocene European pollen data
The European Pollen Database (EPD) is a community effort to archive and make available pollen sequences from across the European continent. Pollen sequences provide records that may be used to infer past vegetation and vegetation change. We present here maps based on 828 sites from the EPD giving an overview of changes in postglacial pollen assemblages in Europe over the past 15,000 years. The maps show the distribution and abundance of 54 differ…
Landscape evolution and agro-sylvo-pastoral activities on the Gorgan Plain (NE Iran) in the last 6000 years
The Gorgan Plain (NE Iran) is characterized by fertile soils formed on a loess plateau and is at present primarily exploited for intensive agriculture. However, the timing and intensity of the human impact on the landscape in the past are still unclear. A sediment core, taken from the centre of the eastern Gorgan Plain in the Kongor Lake covering the major part of the Holocene from 6.1 to 0.8 ka (all ages are calibrated before present), has been …
Interdisciplinary characterisation and environmental imprints of mining and forestry in the upper Durance valley (France) during the Holocene
Towards mapping the late Quaternary vegetation change of Europe
The number of well-dated pollen diagrams in Europe has increased considerably over the last 30 years and many of them have been submitted to the European Pollen Database (EPD). This allows for the construction of increasingly precise maps of Holocene vegetation change across the continent. Chronological information in the EPD has been expressed in uncalibrated radiocarbon years, and most chronologies to date are based on this time scale. Here we …
The European Modern Pollen Database (EMPD) project
André Berger, de la théorie astronomique au réchauffement global et au développement durable
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Is palynology a credible climate proxy in the Subantarctic
Pollen and spore analysis is the most successfully used palaeobotanical discipline for reconstructing Holocene vegetation and climate history throughout the world. Subantarctic islands are very specific areas. They are located in the circum-Antarctic Southern Ocean in latitudes that are under strong influence of the southern westerly winds, and are characterised by a treeless, phanerogam-poor flora. Palynological research on many of these islands…
Holocene history of Lac des Lauzons (2180 m a.s.l.), reconstructed from multiproxy analyses of Coleoptera, plant macroremains and pollen (Hautes-Alpes, France)
A 1.70 m core extracted from the Lac des Lauzons, Haut Champsaur, French Alps, at 2180 m altitude, provided a detailed Holocene record of beetles, pollen and plant macrofossils, enabling the reconstruction of local palaeoenvironmental changes during the last 10 000 years. After an early phase of colonization by plants and insects, corresponding to the Lateglacial interstadial, a long phase of relative stability of the ecosystems (at least in the …
Holocene seasonality changes in the central Mediterranean region reconstructed from the pollen sequences of Lake Accesa (Italy) and Tenaghi Philippon (Greece)
This study presents pollen-based climate reconstructions of Holocene temperature and precipitation seasonality for two high-resolution pollen sequences from the central (Lake Accesa, central Italy) and eastern Mediterranean (Tenaghi Philippon, Greece) regions. The quantitative climate reconstruction uses multiple methods to provide an improved assessment of the uncertainties involved in palaeoclimate reconstructions. The multimethod approach comp…
Pollen analysis of coprolites from a late Pleistocene–Holocene cave deposit (Wezmeh Cave, west Iran)
La construction des territoires montagnards
Changement climatique et biodiversité »
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…
Notes on Arboricultural and Agricultural Practices in Ancient Iran based on New Pollen Evidence
New pollen evidence from two sites in South-Central Zagros (Lake Maharlou), Southwestern Iran, and Sahand Mountains (Lake Almalou), Northwestern Iran, provide evidence for the emergence of tree cultivation in Southwestern Iran since the 3rd and 2nd millennia BC and upland agricultural activities in Northwestern Iran since 5th to 3rd centuries BC. Juglans cf. regia could have been cultivated firstly at ~ 2500 BC and became more extensively cultiva…
Holocene vegetation history in Romanian Subcarpathians
Pollen analysis from a peat core 7.0 m in length, taken from a bog near Bisoca, in a mid-altitude area of the Buzăului Subcarpathian mountains, is used to reconstruct the postglacial vegetation history of the region. The vegetation record, which is supported by twelve 14 C dates, starts at the end of the Late Glacial period. At the Late Glacial/Holocene transition, open vegetation was replaced by forest, suggesting a fast response to climatic war…
The European Pollen Database
Pollen stratigraphies are the most spatially extensive data available for the reconstruction of past land-cover change. Detailed knowledge of past land-cover is becoming increasingly important to evaluate the present trends in, and drivers of, vegetation composition. The European Pollen Database (EPD) was established in the late 1980s and developed in the early 1990s to provide a structure for archiving, exchanging, and analysing Quaternary polle…
A late Holocene pollen record from Lake Almalou in NW Iran
A late Pleistocene long pollen record from Lake Urmia, Nw Iran
A palynological study based on two 100-m long cores from Lake Urmia in northwestern Iran provides a vegetation record spanning 200 ka, the longest pollen record for the continental interior of the Near East. During both penultimate and last glaciations, a steppe of Artemisia and Poaceae dominated the upland vegetation with a high proportion of Chenopodiaceae in both upland and lowland saline ecosystems. While Juniperus and deciduous Quercus trees…
Archéologie et paléoenvironnement dans les Alpes méridionales françaises, Hauts massifs de l'Argentiérois, du Champsaur et de l'Ubaye, Hautes-Alpes et Alpes-de-Haute-Provence, Néolithique final -début…
In the Southern French Alps, the first evidence for prehistoric human presence has been revealed by multidisciplinary and dia-chronic research programs developed in the Argentiérois, Champsaur and Ubaye high altitude massifs in the Ecrins National Park (Hautes-Alpes), and in the Mercantour National park in the Ubaye (Alpes-de-Haute-Provence). This work correlates archaeological and palaeoenvironmetal data. This approach assesses the modes of expl…
Vegetation history of the SE section of the Zagros Mountains during the last five millennia; a pollen record from the Maharlou Lake, Fars Province, Iran
Holocene climate changes in the central Mediterranean as recorded by lake-level fluctuations at Lake Accesa (Tuscany, Italy)
Holocene seasonality changes in the central Mediterranean region reconstructed from the pollen sequences of Lake Accesa (Italy) and Tenaghi Philippon (Greece)
This study presents pollen-based climate reconstructions of Holocene temperature and precipitation seasonality for two high-resolution pollen sequences from the central (Lake Accesa, central Italy) and eastern Mediterranean (Tenaghi Philippon, Greece) regions. The quantitative climate reconstruction uses multiple methods to provide an improved assessment of the uncertainties involved in palaeoclimate reconstructions. The multimethod approach comp…
Vegetation history, climate and human impact over the last 15,000 years at Lago dell’Accesa (Tuscany, Central Italy)
Towards mapping the late Quaternary vegetation change of Europe
The number of well-dated pollen diagrams in Europe has increased considerably over the last 30 years and many of them have been submitted to the European Pollen Database (EPD). This allows for the construction of increasingly precise maps of Holocene vegetation change across the continent. Chronological information in the EPD has been expressed in uncalibrated radiocarbon years, and most chronologies to date are based on this time scale. Here we …
Notes on Arboricultural and Agricultural Practices in Ancient Iran based on New Pollen Evidence
New pollen evidence from two sites in South-Central Zagros (Lake Maharlou), Southwestern Iran, and Sahand Mountains (Lake Almalou), Northwestern Iran, provide evidence for the emergence of tree cultivation in Southwestern Iran since the 3rd and 2nd millennia BC and upland agricultural activities in Northwestern Iran since 5th to 3rd centuries BC. Juglans cf. regia could have been cultivated firstly at ~ 2500 BC and became more extensively cultiva…
Modern pollen/vegetation/land-use relationships in mountain environments
The European Pollen Database
Pollen stratigraphies are the most spatially extensive data available for the reconstruction of past land-cover change. Detailed knowledge of past land-cover is becoming increasingly important to evaluate the present trends in, and drivers of, vegetation composition. The European Pollen Database (EPD) was established in the late 1980s and developed in the early 1990s to provide a structure for archiving, exchanging, and analysing Quaternary polle…
The European Modern Pollen Database (EMPD) project
Vegetation history of the SE section of the Zagros Mountains during the last five millennia; a pollen record from the Maharlou Lake, Fars Province, Iran
A late Holocene pollen record from Lake Almalou in NW Iran
Vegetation history in the Eastern Romanian Carpathians
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…
Vegetation history and lake-level changes from the Younger Dryas to the present in Eastern Pyrenees (France)
Archéologie et paléoenvironnement dans les Alpes méridionales françaises, Hauts massifs de l'Argentiérois, du Champsaur et de l'Ubaye, Hautes-Alpes et Alpes-de-Haute-Provence, Néolithique final -début…
In the Southern French Alps, the first evidence for prehistoric human presence has been revealed by multidisciplinary and dia-chronic research programs developed in the Argentiérois, Champsaur and Ubaye high altitude massifs in the Ecrins National Park (Hautes-Alpes), and in the Mercantour National park in the Ubaye (Alpes-de-Haute-Provence). This work correlates archaeological and palaeoenvironmetal data. This approach assesses the modes of expl…
Pollen analysis of coprolites from a late Pleistocene–Holocene cave deposit (Wezmeh Cave, west Iran)
Environmental impact of early palaeometallurgy
Palaeoenvironments and cultural landscapes of the last 2000 years reconstructed from pollen and Coleopteran records in the Lower Rhône Valley, southern France
For the first time, a high-resolution pollen/Coleoptera joint analysis is performed on a late Holocene sedimentary sequence located in the Lower Rhône Valley. 14 C dates validated by pollen data show that the bottom of the sequence is contemporaneous with the Greco-Roman period whereas the top is attributed to the present. This sequence yielded very rich pollen and insect assemblages, enabling a detailed reconstruction of the palaeoenvironment su…
Compositional turnover and variation in Eemian pollen sequences in Europe
Pollen-derived history of timber exploitation from the Roman period onwards in the Romanche valley, central French Alps
Woodland use in treeless landscapes? A compilation of botanical data from NE Iran during the Sasanian Empire
Landscape evolution and agro-sylvo-pastoral activities on the Gorgan Plain (NE Iran) in the last 6000 years
The Gorgan Plain (NE Iran) is characterized by fertile soils formed on a loess plateau and is at present primarily exploited for intensive agriculture. However, the timing and intensity of the human impact on the landscape in the past are still unclear. A sediment core, taken from the centre of the eastern Gorgan Plain in the Kongor Lake covering the major part of the Holocene from 6.1 to 0.8 ka (all ages are calibrated before present), has been …
Is palynology a credible climate proxy in the Subantarctic
Pollen and spore analysis is the most successfully used palaeobotanical discipline for reconstructing Holocene vegetation and climate history throughout the world. Subantarctic islands are very specific areas. They are located in the circum-Antarctic Southern Ocean in latitudes that are under strong influence of the southern westerly winds, and are characterised by a treeless, phanerogam-poor flora. Palynological research on many of these islands…
À propos d’histoire de l’environnement
l'historien exposé d ans l'article précédent.U n débat à poursuivre et auquel nous ouvrons n os colonnes.
Reconstruction of Middle Pleistocene palaeoenvironments based on pollen and stable isotope investigations at Val-de-Lans, Isère, France
Long Pleistocene Pollen Records from the Praclaux Crater, South-Central France
A 46-m core of lake sediments, obtained from the center of the explosion crater of Praclaux (Haute-Loire, Velay, France), was studied on the basis of 368 pollen spectra. Five temperate forest episodes alternating with phases indicative of glacial climates are recorded. Two of these episodes show vegetation successions representative of full interglaciations; the oldest is contemporaneous with the Holsteinian interglaciation. A thick trachytic tep…
Termination of the Last Glaciation in the Iberian Peninsula Inferred from the Pollen Sequence of Quintanar de la Sierra
A 4.5-m-thick late-glacial pollen sequence, supported by 17 AMS 14 C dates, has been investigated at the Quintanar de la Sierra marshland (Iberian cordillera, north-central Spain). Pollen zones were defined that correspond to successive phases in vegetation history during the end of the Late Würm, late-glacial interstade, and Younger Dryas periods. A transfer function approach has been adopted to derive quantitative climate estimates from the pol…
Dense‐media separation as a more efficient pollen extraction method for use with organic sediment/deposit samples
Dense‐media separation, frequently adopted as a standard pollen extraction method for use with minerogenic sediment samples, was adapted for use with organic‐rich sediment and peat samples. A total of 15 organic‐rich sediment samples, obtained from sites in Corsica and the Southern European Alps, was treated using both dense‐media separation and the conventional preparation method in order to compare the relative efficiencies of the two methods. …
Palaeoenvironments and cultural landscapes of the last 2000 years reconstructed from pollen and Coleopteran records in the Lower Rhône Valley, southern France
For the first time, a high-resolution pollen/Coleoptera joint analysis is performed on a late Holocene sedimentary sequence located in the Lower Rhône Valley. 14 C dates validated by pollen data show that the bottom of the sequence is contemporaneous with the Greco-Roman period whereas the top is attributed to the present. This sequence yielded very rich pollen and insect assemblages, enabling a detailed reconstruction of the palaeoenvironment su…
Pollen-derived history of timber exploitation from the Roman period onwards in the Romanche valley, central French Alps
Tentative Correlation of Pollen Records of the Last Interglacial at Grande Pile and Ribains with Marine Isotope Stages
Eemian lake deposits in Grande Pile and Ribains, France, correlate with marine isotope substages (MIS) 5e and 5d as delimited in two pollen-bearing deep-sea cores off Portugal. The Eemian forests in France lasted for approximately 20 millennia, from at least 126,000 to ca. 107,000 yr B.P. Oscillatory climate deteriorations began about 115,000 yr ago. An intense cold spell affected the region approximately 110,000 yr ago.
Last Interglacial Climates
The last interglacial, commonly understood as an interval with climate as warm or warmer than today, is represented by marine isotope stage (MIS) 5e, which is a proxy record of low global ice volume and high sea level. It is arbitrarily dated to begin at approximately 130,000 yr B.P. and end at 116,000 yr B.P. with the onset of the early glacial unit MIS 5d. The age of the stage is determined by correlation to uranium–thorium dates of raised cora…
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European vegetation during Marine Oxygen Isotope Stage-3
European vegetation during representative “warm” and “cold” intervals of stage-3 was inferred from pollen analytical data. The inferred vegetation differs in character and spatial pattern from that of both fully glacial and fully interglacial conditions and exhibits contrasts between warm and cold intervals, consistent with other evidence for stage-3 palaeoenvironmental fluctuations. European vegetation thus appears to have been an integral compo…
Vegetation history in the Eastern Romanian Carpathians
Origines, devenir et effets des hydrocarbures dans les sédiments marins
Dans un contexte de redéfinition des fonctions de l’agriculture dans la société, les « systèmes de connaissance agricole » doivent concevoir de nouveaux modes de collaboration entre agriculteurs, agents de développement et scientifiques, mais aussi renouveler les connaissances à produire. Peu de travaux portent sur le contenu des connaissances à construire dans ces situations. Ce texte part de l’hypothèse que des connaissances agronomiques peuven…
Vegetation history and lake-level changes from the Younger Dryas to the present in Eastern Pyrenees (France)
A new scenario for the Quaternary history of European beech populations
Here, palaeobotanical and genetic data for common beech (Fagus sylvatica) in Europe are used to evaluate the genetic consequences of long-term survival in refuge areas and postglacial spread. Four large datasets are presented, including over 400 fossil-pollen sites, 80 plant-macrofossil sites, and 450 and 600 modern beech populations for chloroplast and nuclear markers, respectively. The largely complementary palaeobotanical and genetic data indi…
Environmental impact of early palaeometallurgy
Modern pollen/vegetation/land-use relationships in mountain environments
Holocene climate changes in the central Mediterranean as recorded by lake-level fluctuations at Lake Accesa (Tuscany, Italy)
Vegetation history, climate and human impact over the last 15,000 years at Lago dell’Accesa (Tuscany, Central Italy)
A late Pleistocene long pollen record from Lake Urmia, Nw Iran
A palynological study based on two 100-m long cores from Lake Urmia in northwestern Iran provides a vegetation record spanning 200 ka, the longest pollen record for the continental interior of the Near East. During both penultimate and last glaciations, a steppe of Artemisia and Poaceae dominated the upland vegetation with a high proportion of Chenopodiaceae in both upland and lowland saline ecosystems. While Juniperus and deciduous Quercus trees…
Archéologie et paléoenvironnement dans les Alpes méridionales françaises, Hauts massifs de l'Argentiérois, du Champsaur et de l'Ubaye, Hautes-Alpes et Alpes-de-Haute-Provence, Néolithique final -début…
In the Southern French Alps, the first evidence for prehistoric human presence has been revealed by multidisciplinary and dia-chronic research programs developed in the Argentiérois, Champsaur and Ubaye high altitude massifs in the Ecrins National Park (Hautes-Alpes), and in the Mercantour National park in the Ubaye (Alpes-de-Haute-Provence). This work correlates archaeological and palaeoenvironmetal data. This approach assesses the modes of expl…
Vegetation history of the SE section of the Zagros Mountains during the last five millennia; a pollen record from the Maharlou Lake, Fars Province, Iran
Holocene vegetation history in Romanian Subcarpathians
Pollen analysis from a peat core 7.0 m in length, taken from a bog near Bisoca, in a mid-altitude area of the Buzăului Subcarpathian mountains, is used to reconstruct the postglacial vegetation history of the region. The vegetation record, which is supported by twelve 14 C dates, starts at the end of the Late Glacial period. At the Late Glacial/Holocene transition, open vegetation was replaced by forest, suggesting a fast response to climatic war…
The European Pollen Database
Pollen stratigraphies are the most spatially extensive data available for the reconstruction of past land-cover change. Detailed knowledge of past land-cover is becoming increasingly important to evaluate the present trends in, and drivers of, vegetation composition. The European Pollen Database (EPD) was established in the late 1980s and developed in the early 1990s to provide a structure for archiving, exchanging, and analysing Quaternary polle…
A late Holocene pollen record from Lake Almalou in NW Iran
Geography (32 obras) · Geology and Paleoclimatology Research (30 obras) · Pollen (25 obras) · Physical geography (23 obras) · Biology (22 obras) · Archaeology (21 obras) · Holocene (20 obras) · Ecology (18 obras) · Geology (18 obras) · Archaeology and ancient environmental studies (14 obras)