David S Hik
Datos Biográficos
| ID | 1347166 |
|---|---|
| NOMBRE | David S Hik |
| NOMBRES | David S |
| APELLIDO | Hik |
| FIRMA | HIK D S |
| AFILIACIONES | University of Alberta |
| ORCID | 0000-0002-8994-9305 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 21 |
| TOTAL DE CITAS | 17 |
| TOTAL COMO AUTOR | 21 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2003 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2022 |
| ÍNDICE H | 3 |
Arctic Crashes
The effects of different management interventions on degraded rangelands in Iceland
Loss of vegetation and soil erosion are symptoms of widespread rangeland degradation across most of the Icelandic highlands. Areas at different stages of degradation coexist as a mosaic that includes both vegetated heathlands, and exposed gravelly deserts. Revegetation efforts have included fertilizer applications and grazing exclusion to increase plant biomass and reduce bare ground, but their effectiveness is predicted to differ depending on th…
These Trees Have Stories to Tell”
For thousands of years Ɂedacho Kué (Artillery Lake, Northwest Territories) has been a key water crossing site for barren-ground caribou (Rangifer tarandus groenlandicus). Human disturbance of barren-ground caribou habitat in northern Canada has emerged as an important focus of study in the last decade; particularly in the Bathurst range of the Northwest Territories where caribou populations have declined by more than 95% since the 1980s. Guided b…
Automated content analysis as a tool for research and practice
Public engagement is essential to the procedural and substantive sustainability of environmental assessment. Public hearings present the lowest barrier to entry for public participation, but these forums face competing political pressures for conducting appropriate public engagement within an expeditious process. Repositories of public hearing testimony provide a source of primary data for examining these public engagement issues during environme…
Circumpolar stakeholder perspectives on Geographic Information Systems for communicating the health impacts of development
Fifty Years of Science at the Kluane Lake Research Station
Touched down on the Kluane strip with the Helio Courier 4153D June 24, 1961. First landed 53D on the Kaskawulsh glacier at what we later called Glacier Camp (ca. 8500 ft) with Dr. Wood and Ralph Lenton to eat snow. Four more landings with tents and all comfort items including food June 30. Two more trips with essentials to start research July 1. Got caught at the camp because of whiteout. A snowstorm followed the whiteout and the time was spent s…
First Records of the Arctic Moth Gynaephora groenlandica (Wocke) South of the Arctic Circle
Two adjacent populations of the Arctic moth Gynaephora groenlandica, a High Arctic endemic species, were found in southwest Yukon, ca. 900 km south of the species’ described distribution. Species identification was based on larval morphology for one population and on larvae rearing and DNA barcoding for the other. All three approaches clearly separated G. groenlandica from the closely related and frequently sympatric G. rossii. These records repr…
The Lakehead Manifesto
Microtopographic patterns in an arctic baydjarakh field
Recent observations suggest that while some arctic landscapes are undergoing rapid change, others are apparently more resilient. In this study, we related surface cover and energy balance to microtopography in a degraded polygonal peat plateau (baydjarakh field) near Churchill, Manitoba in mid-summer 2010. The landscape consists of remnant high-centered polygons divided by troughs of varying widths. Historical aerial photos indicate these topogra…
Shrub expansion in tundra ecosystems
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…
Expansion of Canopy-Forming Willows Over the Twentieth Century on Herschel Island, Yukon Territory, Canada
Four Decades of Plant Community Change in the Alpine Tundra of Southwest Yukon, Canada
Multi-Decadal Changes in Tundra Environments and Ecosystems
Evidence for Selective Caching by Arctic Ground Squirrels Living in Alpine Meadows in the Yukon
Male arctic ground squirrels (Spermophilus parryii) rely on food they cached the previous year for the energy they need to compete for mates each spring. We collected cheek-pouch contents of arctic ground squirrels trapped during three summers (2000–02) as an indication of what squirrels cached. Among adults, both males and females carried material in their cheek pouches, but males did so more frequently than females (4.4% vs. 0.6% of captures). …
IPY 2007–08 and the Resurgence of Northern (& Polar) Research in Canada
THE FIRST INTERNATIONAL POLAR YEAR (IPY) in 1882 – 83 was one of the earliest globally coordinated scientific efforts, and its success provided a model for subsequent programs of coordinated international research. The coming IPY in 2007 – 08 (actually extending to 2009) will be a major event that contributes to the advancement of polar knowledge, research and technology and establishes a new foundation and legacy for future decades of work. Cana…
Ecological Dynamics Across the Arctic Associated with Recent Climate Change
Assessing the Arctic The Arctic is experiencing some of the most rapid climate change currently under way across the globe, but consequent ecological responses have not been widely reported. At the close of the Fourth International Polar Year, Post et al. (p. 1355 ) review observations on ecological impacts in this sensitive region. The widespread changes occurring in terrestrial, freshwater, and marine systems, presage changes at lower latitudes…
Wolf Reproduction in Response to Caribou Migration and Industrial Development on the Central Barrens of Mainland Canada
Reproductive success of mammals is greatly influenced by food availability. Where wolves (Canis lupus) prey on migratory barren-ground caribou (Rangifer tarandus), caribou migration patterns strongly influence food availability for wolves. However, industrial development in formerly undeveloped wolf range could also negatively influence wolf reproduction, either directly (by disrupting normal feeding behavior) or indirectly (by impacting caribou …
Evidence of Recent Treeline Dynamics in Southwest Yukon from Aerial Photographs
Small-scale vertical aerial photographs taken in 1947 and 1948 covering 200 km2 of the Kluane Ranges, southwest Yukon, were compared with corresponding photographs taken in 1989 for the purpose of characterizing changes in the distribution and abundance of white spruce (Picea glauca (Moench) Voss) at the alpine treeline. Digital photogrammetry, including orthorectification and on-screen interpretation, was supplemented by stereoscopic inspection …
Long Foraging Movement of a Denning Tundra Wolf
Wolves (Canis lupus) on the Canadian barrens are intimately linked to migrating herds of barren-ground caribou (Rangifer tarandus). We deployed a Global Positioning System (GPS) radio collar on an adult female wolf to record her movements in response to changing caribou densities near her den during summer. This wolf and two other females were observed nursing a group of 11 pups. She traveled a minimum of 341 km during a 14-day excursion. The str…
Putting the Canadian Polar House in Order
Northern Canada is facing unprecedented social, political, economic, environmental, and cultural changes. Unfortunately, attention to northern issues has typically been sustained for only short periods in response to external events, usually associated with interests in minerals, oil and natural gas reserves, or pipelines
Science and the St Elias
The past, present, and future contributions of science in the St Elias Mountains, and its relationship with regional development, resource management, and traditional ecological knowledge is examined. Science has evolved from an early foundation of exploration, through stages of resource inventories and surveys, to deductive scientific research and, more recently, a promising reconnection with traditional knowledge. Directly and indirectly, event…
Multi-Decadal Changes in Tundra Environments and Ecosystems
Expansion of Canopy-Forming Willows Over the Twentieth Century on Herschel Island, Yukon Territory, Canada
Science and the St Elias
The past, present, and future contributions of science in the St Elias Mountains, and its relationship with regional development, resource management, and traditional ecological knowledge is examined. Science has evolved from an early foundation of exploration, through stages of resource inventories and surveys, to deductive scientific research and, more recently, a promising reconnection with traditional knowledge. Directly and indirectly, event…
Circumpolar stakeholder perspectives on Geographic Information Systems for communicating the health impacts of development
Four Decades of Plant Community Change in the Alpine Tundra of Southwest Yukon, Canada
Science and the St Elias
The past, present, and future contributions of science in the St Elias Mountains, and its relationship with regional development, resource management, and traditional ecological knowledge is examined. Science has evolved from an early foundation of exploration, through stages of resource inventories and surveys, to deductive scientific research and, more recently, a promising reconnection with traditional knowledge. Directly and indirectly, event…
Long Foraging Movement of a Denning Tundra Wolf
Wolves (Canis lupus) on the Canadian barrens are intimately linked to migrating herds of barren-ground caribou (Rangifer tarandus). We deployed a Global Positioning System (GPS) radio collar on an adult female wolf to record her movements in response to changing caribou densities near her den during summer. This wolf and two other females were observed nursing a group of 11 pups. She traveled a minimum of 341 km during a 14-day excursion. The str…
Putting the Canadian Polar House in Order
Northern Canada is facing unprecedented social, political, economic, environmental, and cultural changes. Unfortunately, attention to northern issues has typically been sustained for only short periods in response to external events, usually associated with interests in minerals, oil and natural gas reserves, or pipelines
Ecological Dynamics Across the Arctic Associated with Recent Climate Change
Assessing the Arctic The Arctic is experiencing some of the most rapid climate change currently under way across the globe, but consequent ecological responses have not been widely reported. At the close of the Fourth International Polar Year, Post et al. (p. 1355 ) review observations on ecological impacts in this sensitive region. The widespread changes occurring in terrestrial, freshwater, and marine systems, presage changes at lower latitudes…
Wolf Reproduction in Response to Caribou Migration and Industrial Development on the Central Barrens of Mainland Canada
Reproductive success of mammals is greatly influenced by food availability. Where wolves (Canis lupus) prey on migratory barren-ground caribou (Rangifer tarandus), caribou migration patterns strongly influence food availability for wolves. However, industrial development in formerly undeveloped wolf range could also negatively influence wolf reproduction, either directly (by disrupting normal feeding behavior) or indirectly (by impacting caribou …
Evidence of Recent Treeline Dynamics in Southwest Yukon from Aerial Photographs
Small-scale vertical aerial photographs taken in 1947 and 1948 covering 200 km2 of the Kluane Ranges, southwest Yukon, were compared with corresponding photographs taken in 1989 for the purpose of characterizing changes in the distribution and abundance of white spruce (Picea glauca (Moench) Voss) at the alpine treeline. Digital photogrammetry, including orthorectification and on-screen interpretation, was supplemented by stereoscopic inspection …
Evidence for Selective Caching by Arctic Ground Squirrels Living in Alpine Meadows in the Yukon
Male arctic ground squirrels (Spermophilus parryii) rely on food they cached the previous year for the energy they need to compete for mates each spring. We collected cheek-pouch contents of arctic ground squirrels trapped during three summers (2000–02) as an indication of what squirrels cached. Among adults, both males and females carried material in their cheek pouches, but males did so more frequently than females (4.4% vs. 0.6% of captures). …
IPY 2007–08 and the Resurgence of Northern (& Polar) Research in Canada
THE FIRST INTERNATIONAL POLAR YEAR (IPY) in 1882 – 83 was one of the earliest globally coordinated scientific efforts, and its success provided a model for subsequent programs of coordinated international research. The coming IPY in 2007 – 08 (actually extending to 2009) will be a major event that contributes to the advancement of polar knowledge, research and technology and establishes a new foundation and legacy for future decades of work. Cana…
Shrub expansion in tundra ecosystems
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…
Expansion of Canopy-Forming Willows Over the Twentieth Century on Herschel Island, Yukon Territory, Canada
Four Decades of Plant Community Change in the Alpine Tundra of Southwest Yukon, Canada
Multi-Decadal Changes in Tundra Environments and Ecosystems
Microtopographic patterns in an arctic baydjarakh field
Recent observations suggest that while some arctic landscapes are undergoing rapid change, others are apparently more resilient. In this study, we related surface cover and energy balance to microtopography in a degraded polygonal peat plateau (baydjarakh field) near Churchill, Manitoba in mid-summer 2010. The landscape consists of remnant high-centered polygons divided by troughs of varying widths. Historical aerial photos indicate these topogra…
First Records of the Arctic Moth Gynaephora groenlandica (Wocke) South of the Arctic Circle
Two adjacent populations of the Arctic moth Gynaephora groenlandica, a High Arctic endemic species, were found in southwest Yukon, ca. 900 km south of the species’ described distribution. Species identification was based on larval morphology for one population and on larvae rearing and DNA barcoding for the other. All three approaches clearly separated G. groenlandica from the closely related and frequently sympatric G. rossii. These records repr…
The Lakehead Manifesto
Fifty Years of Science at the Kluane Lake Research Station
Touched down on the Kluane strip with the Helio Courier 4153D June 24, 1961. First landed 53D on the Kaskawulsh glacier at what we later called Glacier Camp (ca. 8500 ft) with Dr. Wood and Ralph Lenton to eat snow. Four more landings with tents and all comfort items including food June 30. Two more trips with essentials to start research July 1. Got caught at the camp because of whiteout. A snowstorm followed the whiteout and the time was spent s…
Circumpolar stakeholder perspectives on Geographic Information Systems for communicating the health impacts of development
Automated content analysis as a tool for research and practice
Public engagement is essential to the procedural and substantive sustainability of environmental assessment. Public hearings present the lowest barrier to entry for public participation, but these forums face competing political pressures for conducting appropriate public engagement within an expeditious process. Repositories of public hearing testimony provide a source of primary data for examining these public engagement issues during environme…
The effects of different management interventions on degraded rangelands in Iceland
Loss of vegetation and soil erosion are symptoms of widespread rangeland degradation across most of the Icelandic highlands. Areas at different stages of degradation coexist as a mosaic that includes both vegetated heathlands, and exposed gravelly deserts. Revegetation efforts have included fertilizer applications and grazing exclusion to increase plant biomass and reduce bare ground, but their effectiveness is predicted to differ depending on th…
These Trees Have Stories to Tell”
For thousands of years Ɂedacho Kué (Artillery Lake, Northwest Territories) has been a key water crossing site for barren-ground caribou (Rangifer tarandus groenlandicus). Human disturbance of barren-ground caribou habitat in northern Canada has emerged as an important focus of study in the last decade; particularly in the Bathurst range of the Northwest Territories where caribou populations have declined by more than 95% since the 1980s. Guided b…
Arctic Crashes
Geography (17 obras) · Ecology (16 obras) · Biology (12 obras) · Ecology (12 obras) · Indigenous Studies and Ecology (9 obras) · Arctic (8 obras) · Climate change and permafrost (8 obras) · Environmental Science (8 obras) · Physical geography (8 obras) · Political science (6 obras)