Esther Lévesque
Biographic Data
| ID | 98729 |
|---|---|
| NAME | Esther Lévesque |
| GIVEN NAMES | Esther |
| FAMILY NAME | Lévesque |
| SIGNATURE | LÉVESQUE E |
| AFFILIATIONS | Center for Northern Studies |
| ORCID | 0000-0002-1119-6032 |
| VERIFIED | Yes |
| TOTAL WORKS | 7 |
| TOTAL CITATIONS | 10 |
| AUTHOR COUNT | 7 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2022 |
| H-INDEX | 1 |
Two distinct waves of greening in northeastern Canada: Summer warming does not tell the whole story
Arctic vegetation cover has been increasing over the last 40 years, which has been attributed mostly to increases in temperature. Yet, the temporal dimension of this greening remains overlooked as it is often viewed as a monotonic trend. Here, using 11 year long rolling windows on 30 m resolution Landsat data, we examined the temporal variations in greening in north-eastern Canada and its dependence on summer warming. We found two significant and…
Berry Plants and Berry Picking in Inuit Nunangat: Traditions in a Changing Socio-Ecological Landscape
Traditional food is central to Inuit culture and sense of identity. Recent changes in lifestyle, climate, and animal populations have influenced how people practice and experience activities on the land. We summarize the findings of 191 new and archived interviews addressing the continued relationships of Inuit to berries in the Canadian territories of Nunavut, Nunavik, and Nunatsiavut. Berry plants have been and remain widely used throughout the…
Greater effect of increasing shrub height on winter versus summer soil temperature
Shrub expansion is increasingly observed in arctic and subarctic environments. The development of shrub structure may significantly impact the abiotic environment at the local scale. Our objective was to reconstruct the development of the vertical structure of Betula glandulosa Michx. and to evaluate its effects on winter and summer soil temperature and on snow depth. Stratified sampling of the shrub revealed that shrub biomass distribution follo…
The Study of Inuit Knowledge of Climate Change in Nunavik, Quebec: A Mixed Methods Approach
Dynamics at the treeline: Differential responses of Picea mariana and Larix laricina to climate change in eastern subarctic Québec
Treelines are known to be temperature-sensitive ecotones, and therefore could rapidly expand their range limits in response to climate warming. Observations of lack of range expansion, however, indicate that ecological constraints partly control the treeline ecotones. The main objectives of this study were to evaluate Picea mariana and Larix laricina recruitment and growth at and above the altitudinal treeline of Kangiqsualujjuaq (Nunavik), where…
Recent expansion of erect shrubs in the Low Arctic: Evidence from Eastern Nunavik
In order to characterize shrub response near the treeline in Eastern Nunavik (Québec), a region under extensive warming since the 1990s, we compared two series (1964 and 2003) of vertical aerial photos from the vicinity of Kangiqsualujjuaq. Our study revealed a widespread increase in erect woody vegetation cover. During the 40 years spanning the two photo series, erect shrub and tree cover increased markedly on more than half of the land surface …
Shrub expansion in tundra ecosystems: Dynamics, impacts and research priorities
Recent research using repeat photography, long-term ecological monitoring and dendrochronology has documented shrub expansion in arctic, high-latitude and alpine tundra ecosystems. Here, we (1) synthesize these findings, (2) present a conceptual framework that identifies mechanisms and constraints on shrub increase, (3) explore causes, feedbacks and implications of the increased shrub cover in tundra ecosystems, and (4) address potential lines of…
Shrub expansion in tundra ecosystems: Dynamics, impacts and research priorities
Recent research using repeat photography, long-term ecological monitoring and dendrochronology has documented shrub expansion in arctic, high-latitude and alpine tundra ecosystems. Here, we (1) synthesize these findings, (2) present a conceptual framework that identifies mechanisms and constraints on shrub increase, (3) explore causes, feedbacks and implications of the increased shrub cover in tundra ecosystems, and (4) address potential lines of…
Dynamics at the treeline: Differential responses of Picea mariana and Larix laricina to climate change in eastern subarctic Québec
Treelines are known to be temperature-sensitive ecotones, and therefore could rapidly expand their range limits in response to climate warming. Observations of lack of range expansion, however, indicate that ecological constraints partly control the treeline ecotones. The main objectives of this study were to evaluate Picea mariana and Larix laricina recruitment and growth at and above the altitudinal treeline of Kangiqsualujjuaq (Nunavik), where…
Recent expansion of erect shrubs in the Low Arctic: Evidence from Eastern Nunavik
In order to characterize shrub response near the treeline in Eastern Nunavik (Québec), a region under extensive warming since the 1990s, we compared two series (1964 and 2003) of vertical aerial photos from the vicinity of Kangiqsualujjuaq. Our study revealed a widespread increase in erect woody vegetation cover. During the 40 years spanning the two photo series, erect shrub and tree cover increased markedly on more than half of the land surface …
The Study of Inuit Knowledge of Climate Change in Nunavik, Quebec: A Mixed Methods Approach
Greater effect of increasing shrub height on winter versus summer soil temperature
Shrub expansion is increasingly observed in arctic and subarctic environments. The development of shrub structure may significantly impact the abiotic environment at the local scale. Our objective was to reconstruct the development of the vertical structure of Betula glandulosa Michx. and to evaluate its effects on winter and summer soil temperature and on snow depth. Stratified sampling of the shrub revealed that shrub biomass distribution follo…
Berry Plants and Berry Picking in Inuit Nunangat: Traditions in a Changing Socio-Ecological Landscape
Traditional food is central to Inuit culture and sense of identity. Recent changes in lifestyle, climate, and animal populations have influenced how people practice and experience activities on the land. We summarize the findings of 191 new and archived interviews addressing the continued relationships of Inuit to berries in the Canadian territories of Nunavut, Nunavik, and Nunatsiavut. Berry plants have been and remain widely used throughout the…
Two distinct waves of greening in northeastern Canada: Summer warming does not tell the whole story
Arctic vegetation cover has been increasing over the last 40 years, which has been attributed mostly to increases in temperature. Yet, the temporal dimension of this greening remains overlooked as it is often viewed as a monotonic trend. Here, using 11 year long rolling windows on 30 m resolution Landsat data, we examined the temporal variations in greening in north-eastern Canada and its dependence on summer warming. We found two significant and…
Ecology (7 works) · Climate change and permafrost (6 works) · Environmental Science (6 works) · Biology (5 works) · Climate change (5 works) · Geography (5 works) · Cryospheric studies and observations (4 works) · Shrub (4 works) · Arctic (3 works) · Physical geography (3 works)