Adam A Ali
Biographic Data
| ID | 4455548 |
|---|---|
| NAME | Adam A Ali |
| GIVEN NAMES | Adam A |
| FAMILY NAME | Ali |
| SIGNATURE | ALI A A |
| AFFILIATIONS | Centre National de la Recherche Scientifique |
| ORCID | 0000-0003-1705-8308 |
| VERIFIED | Yes |
| TOTAL WORKS | 20 |
| TOTAL CITATIONS | 24 |
| AUTHOR COUNT | 20 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2003 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 3 |
Shifting drivers of holocene fire regimes in Uzbekistan
International audience
Wildfire-induced soil erosion in northern Finland watersheds
Climate change is expected to increase the frequency and severity of wildfires in boreal forests, raising concerns about ecosystem resilience. We investigated the correspondence between fire events and soil erosion events in northern Finland during the Holocene (last 11,000 years). We analysed charcoal particles to reconstruct the local fire histories of two boreal lake catchments. Then, using magnetic susceptibility analysis, we identified sedim…
Fire-controlled variations in abundance of white pine and red pine in Quebec’s northern temperate forest during the Holocene
In North American temperate forests, white pine ( Pinus strobus L.) and red pine ( Pinus resinosa Ait.) establish on sites cleared by infrequent high-severity crown fires and persist in the long-term when low-severity surface fires clear the understory and expose mineral seedbeds, facilitating regeneration. Considerable reduction of white pine and red pine abundance over the last two centuries due to overharvesting and fire suppression prompted e…
Early afforestation on islands of proglacial Lake Ojibway as evidence of post-glacial migration outposts
At the end of the last glacial period in the northern hemisphere, meltwater from receding ice sheets accumulated into large proglacial lakes, potentially limiting postglacial afforestation. We explored whether former islands of proglacial Lake Ojibway (Canada) (hilltops in the current landscape) could have acted as migration outposts and thus accelerated the postglacial migration. We extracted sediments from two small lakes located on “paleo-isla…
The reconstruction of burned area and fire severity using charcoal from boreal lake sediments
Although lacustrine sedimentary charcoal has long been used to infer paleofires, their quantitative reconstructions require improvements of the calibration of their links with fire regimes (i.e. occurrence, area, and severity) and the taphonomic processes that affect charcoal particles between the production and the deposition in lake sediments. Charcoal particles >150 μm were monitored yearly from 2011 to 2016 using traps submerged in seven head…
Coherent signature of warming-induced extreme sub-continental boreal wildfire activity 4800 and 1100 years BP
Climate changes are expected to progressively increase extreme wildfire frequency in forests. Finding past analogs for periods of extreme biomass burning would provide valuable insights regarding what the effects of warming might be for tree species distribution, ecosystem integrity, atmospheric greenhouse gas balance, and human safety. Here, we used a network of 42 lake-sediment charcoal records across a ∼2000 km transect in eastern boreal North…
Gradually increasing forest fire activity during the Holocene in the northern Ural region (Komi Republic, Russia)
In many boreal regions of Russia the past natural variability of forest fire activity remains largely undocumented, preventing accurate assessment of the impact of current climate warming on forest ecosystem dynamics. This study aims to reconstruct the Holocene fire history of the northern Ural mountain foothills, in the Komi Republic, based on analyses of charcoal particles from peatland deposits and coupled with dendrochronological investigatio…
Lacustrine charcoal peaks provide an accurate record of surface wildfires in a North European boreal forest
We evaluated the skills of different palaeofire reconstruction techniques to reconstruct the fire history of a boreal landscape (Russian Karelia) affected by surface fires. The analysis of dated lacustrine sediments from two nearby lakes was compared with independent dendrochronological dating of fire scars, methods which have rarely been used in context of surface fires. We used two sediment sub-sampling volumes (1 and 3.5 cm 3 , wet volumes) an…
Are marginal balsam fir and eastern white cedar stands relics from once more extensive populations in north-eastern North America
Marginal stands of balsam fir ( Abies balsamea [L.] Mill.) and eastern white cedar ( Thuja occidentalis L.) are found north of their limits of continuous distribution in eastern North America. Regional-scale paleoecological studies have suggested that fir and cedar populations could have had larger extents in the past. This study aimed at verifying this hypothesis at the local scale. Wood charcoal fragments were collected from the soils of two ma…
Different regional climatic drivers of Holocene large wildfires in boreal forests of northeastern America
Global warming could increase climatic instability and large wildfire activity in circumboreal regions, potentially impairing both ecosystem functioning and human health. However, links between large wildfire events and climatic and/or meteorological conditions are still poorly understood, partly because few studies have covered a wide range of past climate-fire interactions. We compared palaeofire and simulated climatic data over the last 7000 y…
Mid Holocene vegetation reconstruction from Vanevan peat (south-eastern shore of Lake Sevan, Armenia)
Using tree-ring records to calibrate peak detection in fire reconstructions based on sedimentary charcoal records
We compared fire episodes over the past 150 years reconstructed using charcoal particles retrieved from well-dated sediment deposits from two small lakes in the eastern Canadian boreal forest, with dendrochronological reconstructions of fire events from the corresponding watersheds. Fire scars and age structure of living trees highlighted three fire events (ad 1890, 1941, and 1989). To explore the ability to detect these fire events based on sedi…
A comparison of charcoal measurements for reconstruction of Mediterranean paleo-fire frequency in the mountains of Corsica
Fire-history reconstructions inferred from sedimentary charcoal records are based on measuring sieved charcoal fragment area, estimating fragment volume, or counting fragments. Similar fire histories are reconstructed from these three approaches for boreal lake sediment cores, using locally defined thresholds. Here, we test the same approach for a montane Mediterranean lake in which taphonomical processes might differ from boreal lakes through fr…
Did fires drive Holocene carbon sequestration in boreal ombrotrophic peatlands of eastern Canada?
Wildfire is an important factor on carbon sequestration in the North American boreal biomes. Being globally important stocks of organic carbon, peatlands may be less sensitive to burning in comparison with upland forests, especially wet unforested ombrotrophic ecosystems as found in northeastern Canada. We aimed to determine if peatland fires have driven carbon accumulation patterns during the Holocene. To cover spatial variability, six cores fro…
Hannibal's Invasion Route
The point of Hannibal's departure from New Carthage in Iberia, in 218 bc , and his subsequent march along the Mediterranean coast to the Pyrénées and on to the Rhône Basin, has been reconstructed by ancient historians with considerable accuracy. The latter 400‐km phase through the Alps, however, has been the subject of some controversy as to whether the Punic Army followed a southern versus a northern invasion route, or some intermediate variant.…
Comparing fire-history interpretations based on area, number and estimated volume of macroscopic charcoal in lake sediments
Sedimentary charcoal particles from lakes are commonly used to investigate fire history. Fire-history reconstructions are based on measuring the surface area or counting the number of charcoal fragments in adjacent samples. Recently, the volume of charcoal particles was advised as a more accurate method for quantifying past charcoal production. Large charcoal datasets, used to synthesize global fire history, include these different types of charc…
Changes in fire regime explain the Holocene rise and fall of Abies balsamea in the coniferous forests of western Québec, Canada
The coniferous boreal forest of northeastern North America is characterized by large and severe fire events and dominated by black spruce ( Picea mariana ), with scattered patches of balsam fir ( Abies balsamea), a species otherwise predominant in the more southern mixedwood boreal forests, characterized by smaller and less severe fire events. Because balsam fir is a late-successional species ill-adapted to fire, this study aimed at determining i…
Évolution postglaciaire des environnements travertineux provençaux et alpins
Le début du développement des systèmes travertineux holocènes du sud de la France était auparavant rattaché à la période du Préboréal, et l’accumulation carbonatée principale à « l’optimum bioclimatique atlantique » . La « mort » progressive puis le démantèlement des formations s’effectuaient entre le Néolithique et la Pax romana. De nouvelles recherches démontrent un démarrage beaucoup plus précoce de la travertinisation dès le Tardiglaciaire. L…
Holocene vegetation responses to fire events in the inner French Alps (Queyras Massif)
Travertines are calcareous deposits that result from water stream saturation in bicarbonate; they are extremely sensitive to environmental variations. Homeostatic conditions, such as a good development of vegetation and regular river flow, induce the formation of homogenous travertine facies enclosing plant imprints. Significant climatic changes and/or human perturbations may disturb the carbonate deposit favouring an increase in detrital materia…
Holocene palaeoenvironmental changes in southern France
Travertines are carbonate deposits formed generally during temperate climatic periods. They usually present a succession of travertinous units and detrital sedimentary levels containing leaf impressions and charcoal, respectively. The travertine of St-Antonin was formed during the Holocence in accordance with this model; snail shells and archaeological material have also been preserved, essentially in detrital levels. An interdisciplinary investi…
Changes in fire regime explain the Holocene rise and fall of Abies balsamea in the coniferous forests of western Québec, Canada
The coniferous boreal forest of northeastern North America is characterized by large and severe fire events and dominated by black spruce ( Picea mariana ), with scattered patches of balsam fir ( Abies balsamea), a species otherwise predominant in the more southern mixedwood boreal forests, characterized by smaller and less severe fire events. Because balsam fir is a late-successional species ill-adapted to fire, this study aimed at determining i…
The reconstruction of burned area and fire severity using charcoal from boreal lake sediments
Although lacustrine sedimentary charcoal has long been used to infer paleofires, their quantitative reconstructions require improvements of the calibration of their links with fire regimes (i.e. occurrence, area, and severity) and the taphonomic processes that affect charcoal particles between the production and the deposition in lake sediments. Charcoal particles >150 μm were monitored yearly from 2011 to 2016 using traps submerged in seven head…
Hannibal's Invasion Route
The point of Hannibal's departure from New Carthage in Iberia, in 218 bc , and his subsequent march along the Mediterranean coast to the Pyrénées and on to the Rhône Basin, has been reconstructed by ancient historians with considerable accuracy. The latter 400‐km phase through the Alps, however, has been the subject of some controversy as to whether the Punic Army followed a southern versus a northern invasion route, or some intermediate variant.…
Early afforestation on islands of proglacial Lake Ojibway as evidence of post-glacial migration outposts
At the end of the last glacial period in the northern hemisphere, meltwater from receding ice sheets accumulated into large proglacial lakes, potentially limiting postglacial afforestation. We explored whether former islands of proglacial Lake Ojibway (Canada) (hilltops in the current landscape) could have acted as migration outposts and thus accelerated the postglacial migration. We extracted sediments from two small lakes located on “paleo-isla…
Are marginal balsam fir and eastern white cedar stands relics from once more extensive populations in north-eastern North America
Marginal stands of balsam fir ( Abies balsamea [L.] Mill.) and eastern white cedar ( Thuja occidentalis L.) are found north of their limits of continuous distribution in eastern North America. Regional-scale paleoecological studies have suggested that fir and cedar populations could have had larger extents in the past. This study aimed at verifying this hypothesis at the local scale. Wood charcoal fragments were collected from the soils of two ma…
Using tree-ring records to calibrate peak detection in fire reconstructions based on sedimentary charcoal records
We compared fire episodes over the past 150 years reconstructed using charcoal particles retrieved from well-dated sediment deposits from two small lakes in the eastern Canadian boreal forest, with dendrochronological reconstructions of fire events from the corresponding watersheds. Fire scars and age structure of living trees highlighted three fire events (ad 1890, 1941, and 1989). To explore the ability to detect these fire events based on sedi…
Lacustrine charcoal peaks provide an accurate record of surface wildfires in a North European boreal forest
We evaluated the skills of different palaeofire reconstruction techniques to reconstruct the fire history of a boreal landscape (Russian Karelia) affected by surface fires. The analysis of dated lacustrine sediments from two nearby lakes was compared with independent dendrochronological dating of fire scars, methods which have rarely been used in context of surface fires. We used two sediment sub-sampling volumes (1 and 3.5 cm 3 , wet volumes) an…
Holocene vegetation responses to fire events in the inner French Alps (Queyras Massif)
Travertines are calcareous deposits that result from water stream saturation in bicarbonate; they are extremely sensitive to environmental variations. Homeostatic conditions, such as a good development of vegetation and regular river flow, induce the formation of homogenous travertine facies enclosing plant imprints. Significant climatic changes and/or human perturbations may disturb the carbonate deposit favouring an increase in detrital materia…
Holocene palaeoenvironmental changes in southern France
Travertines are carbonate deposits formed generally during temperate climatic periods. They usually present a succession of travertinous units and detrital sedimentary levels containing leaf impressions and charcoal, respectively. The travertine of St-Antonin was formed during the Holocence in accordance with this model; snail shells and archaeological material have also been preserved, essentially in detrital levels. An interdisciplinary investi…
Holocene vegetation responses to fire events in the inner French Alps (Queyras Massif)
Travertines are calcareous deposits that result from water stream saturation in bicarbonate; they are extremely sensitive to environmental variations. Homeostatic conditions, such as a good development of vegetation and regular river flow, induce the formation of homogenous travertine facies enclosing plant imprints. Significant climatic changes and/or human perturbations may disturb the carbonate deposit favouring an increase in detrital materia…
Évolution postglaciaire des environnements travertineux provençaux et alpins
Le début du développement des systèmes travertineux holocènes du sud de la France était auparavant rattaché à la période du Préboréal, et l’accumulation carbonatée principale à « l’optimum bioclimatique atlantique » . La « mort » progressive puis le démantèlement des formations s’effectuaient entre le Néolithique et la Pax romana. De nouvelles recherches démontrent un démarrage beaucoup plus précoce de la travertinisation dès le Tardiglaciaire. L…
Changes in fire regime explain the Holocene rise and fall of Abies balsamea in the coniferous forests of western Québec, Canada
The coniferous boreal forest of northeastern North America is characterized by large and severe fire events and dominated by black spruce ( Picea mariana ), with scattered patches of balsam fir ( Abies balsamea), a species otherwise predominant in the more southern mixedwood boreal forests, characterized by smaller and less severe fire events. Because balsam fir is a late-successional species ill-adapted to fire, this study aimed at determining i…
Comparing fire-history interpretations based on area, number and estimated volume of macroscopic charcoal in lake sediments
Sedimentary charcoal particles from lakes are commonly used to investigate fire history. Fire-history reconstructions are based on measuring the surface area or counting the number of charcoal fragments in adjacent samples. Recently, the volume of charcoal particles was advised as a more accurate method for quantifying past charcoal production. Large charcoal datasets, used to synthesize global fire history, include these different types of charc…
Hannibal's Invasion Route
The point of Hannibal's departure from New Carthage in Iberia, in 218 bc , and his subsequent march along the Mediterranean coast to the Pyrénées and on to the Rhône Basin, has been reconstructed by ancient historians with considerable accuracy. The latter 400‐km phase through the Alps, however, has been the subject of some controversy as to whether the Punic Army followed a southern versus a northern invasion route, or some intermediate variant.…
Did fires drive Holocene carbon sequestration in boreal ombrotrophic peatlands of eastern Canada?
Wildfire is an important factor on carbon sequestration in the North American boreal biomes. Being globally important stocks of organic carbon, peatlands may be less sensitive to burning in comparison with upland forests, especially wet unforested ombrotrophic ecosystems as found in northeastern Canada. We aimed to determine if peatland fires have driven carbon accumulation patterns during the Holocene. To cover spatial variability, six cores fro…
A comparison of charcoal measurements for reconstruction of Mediterranean paleo-fire frequency in the mountains of Corsica
Fire-history reconstructions inferred from sedimentary charcoal records are based on measuring sieved charcoal fragment area, estimating fragment volume, or counting fragments. Similar fire histories are reconstructed from these three approaches for boreal lake sediment cores, using locally defined thresholds. Here, we test the same approach for a montane Mediterranean lake in which taphonomical processes might differ from boreal lakes through fr…
Using tree-ring records to calibrate peak detection in fire reconstructions based on sedimentary charcoal records
We compared fire episodes over the past 150 years reconstructed using charcoal particles retrieved from well-dated sediment deposits from two small lakes in the eastern Canadian boreal forest, with dendrochronological reconstructions of fire events from the corresponding watersheds. Fire scars and age structure of living trees highlighted three fire events (ad 1890, 1941, and 1989). To explore the ability to detect these fire events based on sedi…
Mid Holocene vegetation reconstruction from Vanevan peat (south-eastern shore of Lake Sevan, Armenia)
Different regional climatic drivers of Holocene large wildfires in boreal forests of northeastern America
Global warming could increase climatic instability and large wildfire activity in circumboreal regions, potentially impairing both ecosystem functioning and human health. However, links between large wildfire events and climatic and/or meteorological conditions are still poorly understood, partly because few studies have covered a wide range of past climate-fire interactions. We compared palaeofire and simulated climatic data over the last 7000 y…
Are marginal balsam fir and eastern white cedar stands relics from once more extensive populations in north-eastern North America
Marginal stands of balsam fir ( Abies balsamea [L.] Mill.) and eastern white cedar ( Thuja occidentalis L.) are found north of their limits of continuous distribution in eastern North America. Regional-scale paleoecological studies have suggested that fir and cedar populations could have had larger extents in the past. This study aimed at verifying this hypothesis at the local scale. Wood charcoal fragments were collected from the soils of two ma…
Coherent signature of warming-induced extreme sub-continental boreal wildfire activity 4800 and 1100 years BP
Climate changes are expected to progressively increase extreme wildfire frequency in forests. Finding past analogs for periods of extreme biomass burning would provide valuable insights regarding what the effects of warming might be for tree species distribution, ecosystem integrity, atmospheric greenhouse gas balance, and human safety. Here, we used a network of 42 lake-sediment charcoal records across a ∼2000 km transect in eastern boreal North…
Gradually increasing forest fire activity during the Holocene in the northern Ural region (Komi Republic, Russia)
In many boreal regions of Russia the past natural variability of forest fire activity remains largely undocumented, preventing accurate assessment of the impact of current climate warming on forest ecosystem dynamics. This study aims to reconstruct the Holocene fire history of the northern Ural mountain foothills, in the Komi Republic, based on analyses of charcoal particles from peatland deposits and coupled with dendrochronological investigatio…
Lacustrine charcoal peaks provide an accurate record of surface wildfires in a North European boreal forest
We evaluated the skills of different palaeofire reconstruction techniques to reconstruct the fire history of a boreal landscape (Russian Karelia) affected by surface fires. The analysis of dated lacustrine sediments from two nearby lakes was compared with independent dendrochronological dating of fire scars, methods which have rarely been used in context of surface fires. We used two sediment sub-sampling volumes (1 and 3.5 cm 3 , wet volumes) an…
The reconstruction of burned area and fire severity using charcoal from boreal lake sediments
Although lacustrine sedimentary charcoal has long been used to infer paleofires, their quantitative reconstructions require improvements of the calibration of their links with fire regimes (i.e. occurrence, area, and severity) and the taphonomic processes that affect charcoal particles between the production and the deposition in lake sediments. Charcoal particles >150 μm were monitored yearly from 2011 to 2016 using traps submerged in seven head…
Early afforestation on islands of proglacial Lake Ojibway as evidence of post-glacial migration outposts
At the end of the last glacial period in the northern hemisphere, meltwater from receding ice sheets accumulated into large proglacial lakes, potentially limiting postglacial afforestation. We explored whether former islands of proglacial Lake Ojibway (Canada) (hilltops in the current landscape) could have acted as migration outposts and thus accelerated the postglacial migration. We extracted sediments from two small lakes located on “paleo-isla…
Fire-controlled variations in abundance of white pine and red pine in Quebec’s northern temperate forest during the Holocene
In North American temperate forests, white pine ( Pinus strobus L.) and red pine ( Pinus resinosa Ait.) establish on sites cleared by infrequent high-severity crown fires and persist in the long-term when low-severity surface fires clear the understory and expose mineral seedbeds, facilitating regeneration. Considerable reduction of white pine and red pine abundance over the last two centuries due to overharvesting and fire suppression prompted e…
Shifting drivers of holocene fire regimes in Uzbekistan
International audience
Wildfire-induced soil erosion in northern Finland watersheds
Climate change is expected to increase the frequency and severity of wildfires in boreal forests, raising concerns about ecosystem resilience. We investigated the correspondence between fire events and soil erosion events in northern Finland during the Holocene (last 11,000 years). We analysed charcoal particles to reconstruct the local fire histories of two boreal lake catchments. Then, using magnetic susceptibility analysis, we identified sedim…
Geology and Paleoclimatology Research (15 works) · Geography (14 works) · Fire effects on ecosystems (13 works) · Physical geography (13 works) · Charcoal (12 works) · Ecology (11 works) · Fire regime (11 works) · Taiga (11 works) · Boreal (10 works) · Climate change (10 works)