Louise Filion
Biographic Data
| ID | 1367768 |
|---|---|
| NAME | Louise Filion |
| GIVEN NAMES | Louise |
| FAMILY NAME | Filion |
| SIGNATURE | FILION L |
| AFFILIATIONS | Center for Northern Studies |
| VERIFIED | No |
| TOTAL WORKS | 18 |
| TOTAL CITATIONS | 11 |
| WORKS AS AUTHOR | 18 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1986 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 1 |
Contribution de la dendrochronologie à l’étude du patrimoine bâti de la région de Québec
La dendrochronologie, une méthode scientifique qui utilise les cernes annuels de croissance des arbres comme marqueurs de temps, permet de dater précisément les constructions et artéfacts en bois. Dans cet article, les auteurs expliquent les principes fondamentaux de cette science et démontrent comment elle peut être appliquée pour documenter et préserver les bâtiments patrimoniaux. Ils présentent des exemples des travaux menés depuis plus de 40 …
Boreal peatland margins as repository sites of long-term natural disturbances of balsam fir/spruce forests
A multidisciplinary, high-resolution paleoecological study (Lepidoptera and plant remains, macroscopic charcoal, pollen) was conducted on a 4000-yr peat monolith extracted from the margin of an ombrotrophic peatland on Anticosti Island (Gulf of St. Lawrence, eastern Canada) to reconstruct the long-term natural disturbances (insect outbreaks, forest fires) of a balsam fir/spruce forest. We hypothesized that an activity of insect defoliators (spruc…
The natural environment of the Québec City region during the Holocene
In the St Lawrence River valley the 10,000-year period following the Wisconsinian glaciation was marked by major geographic and climatic changes which influenced the development of plant communities. In this paper the Holocene environments in the Québec City region have been reconstructed on the basis of palaeogeographic and palaeoecological data. Fluctuations in relative sea level, particularly in recent millennia, are of particular interest in …
Reconstruction of the long-term fire history of an old-growth deciduous forest in Southern Québec, Canada, from charred wood in mineral soils
Charcoal particles are widespread in terrestrial and lake environments of the northern temperate and boreal biomes where they are used to reconstruct past fire events and regimes. In this study, we used botanically identified and radiocarbon-dated charcoal macrofossils in mineral soils as a paleoecological tool to reconstruct past fire activity at the stand scale. Charcoal macrofossils buried in podzolic soils by tree uprooting were analyzed to r…
La dynamique de l'enneigement en région hémi-arctique, Poste-de-la-Baleine, Nouveau-Québec
Dans les régions hemi-arctiques, les patrons d'enneigement sont causés par l'arrangement spatial des unités de relief et de végétation. A Poste-de-la-Baleine, l'étude de la distribution du couvert de neige en fonction des unités de relief démontre que les dépressions et les versants affectés d'un microrelief accusé ou de fortes dénivellations sont les sites privilégiés d'accumulation. Les structures végétales hautes exercent un meilleur contrôle …
Holocene Vegetation Dynamics of Anticosti Island, Québec, and Consequences of Remoteness on Ecological Succession
The postglacial vegetation history of Anticosti Island in the Gulf of St. Lawrence, Québec, was reconstructed from pollen analysis of three sites, providing the first paleoecological data for the island. The earliest plant communities (8550–7770 14 C yr B.P.; 9500–8500 cal yr B.P.) were characterized by a high representation of green alder ( Alnus crispa ), indicating an open environment with sparse spruce ( Picea ). Between 7770 and 3700 14 C yr…
Macrofossil Record of a Middle Holocene Drop in Relative Sea Level at the St. Lawrence Estuary, Québec
Macrofossil analysis of a peat layer overlying shallow-water estuarine sediments allows the reconstruction of vegetation changes between 7000 and 6000 14 C yr B.P. near Montmagny, Québec. About 7500–7000 14 C yr B.P., the study site was brackish and intertidal. Next, a cattail marsh dominated by Typha changed into a terrestrial fire-prone environment that contained xero-mesophilous tree species ( Pinus / Tsuga ) and lasted a few hundred years, un…
Recent paludification of kettle holes on the central isjands of Lake Bienville, northern Quebec, Canada
This paper reports on the paludification of kettle holes formed in a proglacial esker complex at Lake Bienville in northern Quebec. Deep hollows on the central islands of this large subarctic lake (c. 900 kin 2 ), are highly exposed to northeasterly and southwesterly winds over long fetches, and accumulate large amounts of drifting snow (c. 4 m). Modifications in local snow distribution associated with Holocene vegetation and climate changes cont…
Mid-Holocene Hemlock Decline in Eastern North America Linked with Phytophagous Insect Activity
Macrofossil evidence indicates that the mid-Holocene hemlock [ Tsuga canadensis L. (Carr.)] decline that occurred over a wide area in eastern North America was associated with phytophagous insect activity. In situ hemlock macrofossils and insect remains found in a paludified dunefield at the northern limit of hemlock testify that two defoliation events occurred at 4910 ± 90 and 4200 ± 100 yr B.P., respectively. The sharp coincidence of remains fr…
Characterization of the Soil Hydromorphic Conditions in a Paludified Dunefield during the Mid-Holocene Hemlock Decline near Québec City, Québec
The mid-Holocene eastern hemlock [ Tsuga canadensis L. (Carr.)] decline has been recently attributed to the activity of insect defoliators. N. Bihiry and L. Filion, Quaternary Research 45,312–320 (1996). In this study, soil hydromorphic conditions were investigated for the period 6800–3200 yr B.P. using micromorphological data from a peat section from a swale in a paludified dunefield in southern Québec. After a short period of plant colonization…
Dynamics of a Holocene Cliff-Top Dune along Mountain River, Northwest Territories, Canada
The dynamics of a cliff-top dune system located at the foot of the Mackenzie Mountains was reconstructed by radiocarbon dating and tree ring analysis of forest paleosols in eolian sediments. The first evidence of eolian activity dates to ca. 3000 yr B.P. when the breaching of a bedrock sill initiated the erosion of glaciofluvial deposits that resulted in the exposure of a 75-m-high cliff of erodible sediment. Sandy sediment eroded from the cliff …
The Holocene development of a debris slope in subarctic Québec, Canada
The development of a debris-covered slope in subarctic Québec was reconstructed in relation to vegetation dynamics, fire history and local permafrost evolution. The slope consisted of a low- elevation rockwall and a rockwall-derived debris veneer overlying a sandy till deposit reworked by gelifluction. The sedimentological and stratigraphical data along with radiocarbon dating and den droecological data indicated that: (1) the period around 5050 …
Relationship of Temperature and Light Ring Formation at Subarctic Treeline and Implications for Climate Reconstruction
During the past 8 centuries, light rings (LRs) have occasionally formed in black spruce ( Picea mariana ) at treeline near Bush Lake, northern Quebec (L. Filion, S. Payette, L. Gauthier, and Y. Boutin, 1986, Quaternary Research 26, 272-279; A. Delwaide, L. Filion, and S. Fayette, 1991, Canadian Journal of Forest Research 21, 1828-1832). New analyses of climate data compiled during the period of overlapping tree-ring and instrumental records show …
Macrofossil and Tree-Ring Evidence for a Long-Term Forest Succession and Mid-Holocene Hemlock Decline
Paludified dune fields in southern Québec provided a unique opportunity to analyze a mid-Holocene forest succession, ranging from xero-mesophilous forests to treed peatlands, which registered the hemlock decline, a major biostratigraphic event in eastern North America. Our fossil-tree chronology established from 66 radiocarbon dates of tree stems indicates that white pine and hemlock were present at the study site about 6000-5700 yr B.P. Hemlock …
Recent Dynamics of Subarctic Dunes as Determined by Tree-Ring Analysis of White Spruce, Hudson Bay, Québec
The radial-growth patterns of white spruce were studied on a number of trees growing in subarctic dunes along the eastern coast of Hudson Bay to calculate the rates of accumulation, erosion, and migration of cold-climate sand dunes. The average rate of sand accumulation in sheltered dunes (forest sites) was 2.5 to 3.3 cm/yr, which is two to three times lower than in highly exposed dunes with a rate of sedimentation of 7.65 cm/yr. The average eros…
The late Holocene record of aeolian and fire activity in northern Québec, Canada
A set of 196 14 C dates was used to reconstruct Late Holocene aeolian activity in the Hudson Bay area along a south-north transect crossing the northern boreal forest, the forest tundra and the shrub tundra zones. The record indicates a minor period of aeolian activity between 4650 and 4050 BP, and three major periods at 3650-2750 BP and after 700 BP. In the northern boreal forest, there was little temporal variation in dune activity, except arou…
Holocene Development of Parabolic Dunes in the Central St. Lawrence Lowland, Québec
Stabilized parabolic dunes in the central St. Lawrence Lowland are oriented NE-SW, in the postulated direction of dune-building winds coming from anticyclonic air circulation induced by the retreating Laurentide Ice Sheet about 10,000 yr ago. The eolian chronology reconstructed from several sections in mixed dune-peatland environments indicates that postglacial plant colonization, characterized by a fortuitous assemblage of arctic-subarctic and b…
Light Rings in Subarctic Conifers as a Dendrochronological Tool
Light rings are characterized by one or a very few latewood-cell layers, an indication of shortened growing seasons, and are particularly frequent in black spruce ( Picea mariana (Mill.) BSP) at the treeline in Québec. The construction of a light-ring chronology spanning the period AD 1398–1982 showed that the highest frequency (>25%) of light rings among 160 trees and krummholz occurred in 1593, 1620, 1634, 1784, 1816, 1817, 1853, 1969, and 1972…
The late Holocene record of aeolian and fire activity in northern Québec, Canada
A set of 196 14 C dates was used to reconstruct Late Holocene aeolian activity in the Hudson Bay area along a south-north transect crossing the northern boreal forest, the forest tundra and the shrub tundra zones. The record indicates a minor period of aeolian activity between 4650 and 4050 BP, and three major periods at 3650-2750 BP and after 700 BP. In the northern boreal forest, there was little temporal variation in dune activity, except arou…
The Holocene development of a debris slope in subarctic Québec, Canada
The development of a debris-covered slope in subarctic Québec was reconstructed in relation to vegetation dynamics, fire history and local permafrost evolution. The slope consisted of a low- elevation rockwall and a rockwall-derived debris veneer overlying a sandy till deposit reworked by gelifluction. The sedimentological and stratigraphical data along with radiocarbon dating and den droecological data indicated that: (1) the period around 5050 …
Light Rings in Subarctic Conifers as a Dendrochronological Tool
Light rings are characterized by one or a very few latewood-cell layers, an indication of shortened growing seasons, and are particularly frequent in black spruce ( Picea mariana (Mill.) BSP) at the treeline in Québec. The construction of a light-ring chronology spanning the period AD 1398–1982 showed that the highest frequency (>25%) of light rings among 160 trees and krummholz occurred in 1593, 1620, 1634, 1784, 1816, 1817, 1853, 1969, and 1972…
Holocene Development of Parabolic Dunes in the Central St. Lawrence Lowland, Québec
Stabilized parabolic dunes in the central St. Lawrence Lowland are oriented NE-SW, in the postulated direction of dune-building winds coming from anticyclonic air circulation induced by the retreating Laurentide Ice Sheet about 10,000 yr ago. The eolian chronology reconstructed from several sections in mixed dune-peatland environments indicates that postglacial plant colonization, characterized by a fortuitous assemblage of arctic-subarctic and b…
The late Holocene record of aeolian and fire activity in northern Québec, Canada
A set of 196 14 C dates was used to reconstruct Late Holocene aeolian activity in the Hudson Bay area along a south-north transect crossing the northern boreal forest, the forest tundra and the shrub tundra zones. The record indicates a minor period of aeolian activity between 4650 and 4050 BP, and three major periods at 3650-2750 BP and after 700 BP. In the northern boreal forest, there was little temporal variation in dune activity, except arou…
Recent Dynamics of Subarctic Dunes as Determined by Tree-Ring Analysis of White Spruce, Hudson Bay, Québec
The radial-growth patterns of white spruce were studied on a number of trees growing in subarctic dunes along the eastern coast of Hudson Bay to calculate the rates of accumulation, erosion, and migration of cold-climate sand dunes. The average rate of sand accumulation in sheltered dunes (forest sites) was 2.5 to 3.3 cm/yr, which is two to three times lower than in highly exposed dunes with a rate of sedimentation of 7.65 cm/yr. The average eros…
Relationship of Temperature and Light Ring Formation at Subarctic Treeline and Implications for Climate Reconstruction
During the past 8 centuries, light rings (LRs) have occasionally formed in black spruce ( Picea mariana ) at treeline near Bush Lake, northern Quebec (L. Filion, S. Payette, L. Gauthier, and Y. Boutin, 1986, Quaternary Research 26, 272-279; A. Delwaide, L. Filion, and S. Fayette, 1991, Canadian Journal of Forest Research 21, 1828-1832). New analyses of climate data compiled during the period of overlapping tree-ring and instrumental records show …
Macrofossil and Tree-Ring Evidence for a Long-Term Forest Succession and Mid-Holocene Hemlock Decline
Paludified dune fields in southern Québec provided a unique opportunity to analyze a mid-Holocene forest succession, ranging from xero-mesophilous forests to treed peatlands, which registered the hemlock decline, a major biostratigraphic event in eastern North America. Our fossil-tree chronology established from 66 radiocarbon dates of tree stems indicates that white pine and hemlock were present at the study site about 6000-5700 yr B.P. Hemlock …
Dynamics of a Holocene Cliff-Top Dune along Mountain River, Northwest Territories, Canada
The dynamics of a cliff-top dune system located at the foot of the Mackenzie Mountains was reconstructed by radiocarbon dating and tree ring analysis of forest paleosols in eolian sediments. The first evidence of eolian activity dates to ca. 3000 yr B.P. when the breaching of a bedrock sill initiated the erosion of glaciofluvial deposits that resulted in the exposure of a 75-m-high cliff of erodible sediment. Sandy sediment eroded from the cliff …
The Holocene development of a debris slope in subarctic Québec, Canada
The development of a debris-covered slope in subarctic Québec was reconstructed in relation to vegetation dynamics, fire history and local permafrost evolution. The slope consisted of a low- elevation rockwall and a rockwall-derived debris veneer overlying a sandy till deposit reworked by gelifluction. The sedimentological and stratigraphical data along with radiocarbon dating and den droecological data indicated that: (1) the period around 5050 …
Mid-Holocene Hemlock Decline in Eastern North America Linked with Phytophagous Insect Activity
Macrofossil evidence indicates that the mid-Holocene hemlock [ Tsuga canadensis L. (Carr.)] decline that occurred over a wide area in eastern North America was associated with phytophagous insect activity. In situ hemlock macrofossils and insect remains found in a paludified dunefield at the northern limit of hemlock testify that two defoliation events occurred at 4910 ± 90 and 4200 ± 100 yr B.P., respectively. The sharp coincidence of remains fr…
Characterization of the Soil Hydromorphic Conditions in a Paludified Dunefield during the Mid-Holocene Hemlock Decline near Québec City, Québec
The mid-Holocene eastern hemlock [ Tsuga canadensis L. (Carr.)] decline has been recently attributed to the activity of insect defoliators. N. Bihiry and L. Filion, Quaternary Research 45,312–320 (1996). In this study, soil hydromorphic conditions were investigated for the period 6800–3200 yr B.P. using micromorphological data from a peat section from a swale in a paludified dunefield in southern Québec. After a short period of plant colonization…
Recent paludification of kettle holes on the central isjands of Lake Bienville, northern Quebec, Canada
This paper reports on the paludification of kettle holes formed in a proglacial esker complex at Lake Bienville in northern Quebec. Deep hollows on the central islands of this large subarctic lake (c. 900 kin 2 ), are highly exposed to northeasterly and southwesterly winds over long fetches, and accumulate large amounts of drifting snow (c. 4 m). Modifications in local snow distribution associated with Holocene vegetation and climate changes cont…
Macrofossil Record of a Middle Holocene Drop in Relative Sea Level at the St. Lawrence Estuary, Québec
Macrofossil analysis of a peat layer overlying shallow-water estuarine sediments allows the reconstruction of vegetation changes between 7000 and 6000 14 C yr B.P. near Montmagny, Québec. About 7500–7000 14 C yr B.P., the study site was brackish and intertidal. Next, a cattail marsh dominated by Typha changed into a terrestrial fire-prone environment that contained xero-mesophilous tree species ( Pinus / Tsuga ) and lasted a few hundred years, un…
Holocene Vegetation Dynamics of Anticosti Island, Québec, and Consequences of Remoteness on Ecological Succession
The postglacial vegetation history of Anticosti Island in the Gulf of St. Lawrence, Québec, was reconstructed from pollen analysis of three sites, providing the first paleoecological data for the island. The earliest plant communities (8550–7770 14 C yr B.P.; 9500–8500 cal yr B.P.) were characterized by a high representation of green alder ( Alnus crispa ), indicating an open environment with sparse spruce ( Picea ). Between 7770 and 3700 14 C yr…
Reconstruction of the long-term fire history of an old-growth deciduous forest in Southern Québec, Canada, from charred wood in mineral soils
Charcoal particles are widespread in terrestrial and lake environments of the northern temperate and boreal biomes where they are used to reconstruct past fire events and regimes. In this study, we used botanically identified and radiocarbon-dated charcoal macrofossils in mineral soils as a paleoecological tool to reconstruct past fire activity at the stand scale. Charcoal macrofossils buried in podzolic soils by tree uprooting were analyzed to r…
La dynamique de l'enneigement en région hémi-arctique, Poste-de-la-Baleine, Nouveau-Québec
Dans les régions hemi-arctiques, les patrons d'enneigement sont causés par l'arrangement spatial des unités de relief et de végétation. A Poste-de-la-Baleine, l'étude de la distribution du couvert de neige en fonction des unités de relief démontre que les dépressions et les versants affectés d'un microrelief accusé ou de fortes dénivellations sont les sites privilégiés d'accumulation. Les structures végétales hautes exercent un meilleur contrôle …
Boreal peatland margins as repository sites of long-term natural disturbances of balsam fir/spruce forests
A multidisciplinary, high-resolution paleoecological study (Lepidoptera and plant remains, macroscopic charcoal, pollen) was conducted on a 4000-yr peat monolith extracted from the margin of an ombrotrophic peatland on Anticosti Island (Gulf of St. Lawrence, eastern Canada) to reconstruct the long-term natural disturbances (insect outbreaks, forest fires) of a balsam fir/spruce forest. We hypothesized that an activity of insect defoliators (spruc…
The natural environment of the Québec City region during the Holocene
In the St Lawrence River valley the 10,000-year period following the Wisconsinian glaciation was marked by major geographic and climatic changes which influenced the development of plant communities. In this paper the Holocene environments in the Québec City region have been reconstructed on the basis of palaeogeographic and palaeoecological data. Fluctuations in relative sea level, particularly in recent millennia, are of particular interest in …
Contribution de la dendrochronologie à l’étude du patrimoine bâti de la région de Québec
La dendrochronologie, une méthode scientifique qui utilise les cernes annuels de croissance des arbres comme marqueurs de temps, permet de dater précisément les constructions et artéfacts en bois. Dans cet article, les auteurs expliquent les principes fondamentaux de cette science et démontrent comment elle peut être appliquée pour documenter et préserver les bâtiments patrimoniaux. Ils présentent des exemples des travaux menés depuis plus de 40 …
Geology and Paleoclimatology Research (15 works) · Geography (14 works) · Geology (12 works) · Holocene (12 works) · Physical geography (12 works) · Oceanography (9 works) · Paleontology (9 works) · Ecology (7 works) · Subarctic climate (7 works) · Aeolian processes and effects (6 works)