Plume heads, continental lithosphere, flood
... 1990). At 290 km depth and deeper the upper- The mesosphere, or transition region, is theremantle LV A does not follow the northern MAR gion of the mantle between the two rna jor seismic but is offset to the east, following the central At- discontinuities at 400 and 650 km depth. The lantic hotspots ...
... 1990). At 290 km depth and deeper the upper- The mesosphere, or transition region, is theremantle LV A does not follow the northern MAR gion of the mantle between the two rna jor seismic but is offset to the east, following the central At- discontinuities at 400 and 650 km depth. The lantic hotspots ...
the Beluga Whale Fact Sheet in PDF format
... Belugas (and all other cetaceans) have several adaptations to conserve oxygen, as well as several adaptations to minimize or eliminate the effects of harmful nitrogen related conditions, such as the bends and nitrogen narcosis, which can be experienced by human scuba divers. Belugas store half the t ...
... Belugas (and all other cetaceans) have several adaptations to conserve oxygen, as well as several adaptations to minimize or eliminate the effects of harmful nitrogen related conditions, such as the bends and nitrogen narcosis, which can be experienced by human scuba divers. Belugas store half the t ...
The Variable Position of Arctic Charr (Salvelinus alpinus (L.))
... but relatively little studied high-latitude lake ecoystems (Schindler & Smol 2006, Christoffersen et al. 2008). Although generalist fish have a wide fundamental trophic niche (i.e. diet and habitat use), the realized niche of populations and individuals is typically restricted due to competitive and ...
... but relatively little studied high-latitude lake ecoystems (Schindler & Smol 2006, Christoffersen et al. 2008). Although generalist fish have a wide fundamental trophic niche (i.e. diet and habitat use), the realized niche of populations and individuals is typically restricted due to competitive and ...
Narwhal (Monodon monoceros) - Registre public des espèces en péril
... Two of three recognized populations of narwhals occur in Canada (Baffin Bay and Hudson Bay). The third occurs in East Greenland. The populations are distinguished by their summering distributions, which may not reflect the degree of interchange between them. The East Greenland population is not thou ...
... Two of three recognized populations of narwhals occur in Canada (Baffin Bay and Hudson Bay). The third occurs in East Greenland. The populations are distinguished by their summering distributions, which may not reflect the degree of interchange between them. The East Greenland population is not thou ...
Contrasting Stress Response of Male Arctic Ground Squirrels and Red Squirrels
... should function to maintain homeostasis at all times, even during the breeding season. In contrast, given that male Arctic ground squirrels are short-lived, compete intensely for access to females, and then disperse, we expect that they may tradeoff survival for reproduction and thus show a stress r ...
... should function to maintain homeostasis at all times, even during the breeding season. In contrast, given that male Arctic ground squirrels are short-lived, compete intensely for access to females, and then disperse, we expect that they may tradeoff survival for reproduction and thus show a stress r ...
Bowhead whale (Balaena mysticetus)
... Assessment Summary Assessment Summary – May 2005 Common name Bowhead whale (Hudson Bay-Foxe Basin population) Scientific name Balaena mysticetus Status Threatened Reason for designation The population was severely reduced by commercial whaling between 1860 and 1915. Recent population estimates are u ...
... Assessment Summary Assessment Summary – May 2005 Common name Bowhead whale (Hudson Bay-Foxe Basin population) Scientific name Balaena mysticetus Status Threatened Reason for designation The population was severely reduced by commercial whaling between 1860 and 1915. Recent population estimates are u ...
True Polar Wander: Linking Deep and Shallow
... As discussed subsequently, accumulating evidellCe suggests that Neoproterozoic and Earl y Paleozoic time experienced much larger and more rapid TPW episodes than apparent during the Mesozoic and Cenozoic Eras, suggesting fundamental (and intellectually exciting) temporal changes in basic geophysical ...
... As discussed subsequently, accumulating evidellCe suggests that Neoproterozoic and Earl y Paleozoic time experienced much larger and more rapid TPW episodes than apparent during the Mesozoic and Cenozoic Eras, suggesting fundamental (and intellectually exciting) temporal changes in basic geophysical ...
IMA - Ministry of Forests, Lands and Natural Resource Operations
... process of weathering, soils develop slowly in this zone. Occasional areas of permafrost also occur here. ...
... process of weathering, soils develop slowly in this zone. Occasional areas of permafrost also occur here. ...
Foraging behaviours and population dynamics of arctic foxes
... fluctuations in food abundance. In this thesis, I examined how arctic foxes (Alopex lagopus) used seasonally superabundant foods (geese and their eggs) and how access to these foods influenced population dynamics of arctic foxes. I addressed this against a backdrop of variation in lemming and vole a ...
... fluctuations in food abundance. In this thesis, I examined how arctic foxes (Alopex lagopus) used seasonally superabundant foods (geese and their eggs) and how access to these foods influenced population dynamics of arctic foxes. I addressed this against a backdrop of variation in lemming and vole a ...
COSEWIC Assessment and Update Status Report on the Ivory Gull
... 2005 respectively despite the broadest geographic search effort ever for this species in Canada. These values represent an apparent population decline of approximately 80% since the 1980s. At-sea surveys provide further evidence for decline; in the High Arctic in August, four times as many Ivory Gul ...
... 2005 respectively despite the broadest geographic search effort ever for this species in Canada. These values represent an apparent population decline of approximately 80% since the 1980s. At-sea surveys provide further evidence for decline; in the High Arctic in August, four times as many Ivory Gul ...
Den Ecology of Swift, Kit and Arctic Foxes: A Review
... The arctic fox inhabits most Arctic land areas above the timber line, including polar deserts and islands far away from the mainland (Preble and McAtee 1923, Lavrov 1932, Chesemore 1975, Hersteinsson 1984, Prestrud 1992a). The arctic fox has many physical adaptations to the Arctic environment, inclu ...
... The arctic fox inhabits most Arctic land areas above the timber line, including polar deserts and islands far away from the mainland (Preble and McAtee 1923, Lavrov 1932, Chesemore 1975, Hersteinsson 1984, Prestrud 1992a). The arctic fox has many physical adaptations to the Arctic environment, inclu ...
Bowhead Whale ( Balaena mysticetus)
... 1900s, it has been subject only to sporadic hunting by Inuit in Canada and Greenland. In the absence of commercial whaling, the population is believed to have been increasing for decades and is likely still increasing. This increase is supported by evidence from both Aboriginal Traditional Knowledge ...
... 1900s, it has been subject only to sporadic hunting by Inuit in Canada and Greenland. In the absence of commercial whaling, the population is believed to have been increasing for decades and is likely still increasing. This increase is supported by evidence from both Aboriginal Traditional Knowledge ...
* RESEARCH REPORT DNR Evaluation of the Reintroduction of the Arctic
... Abstract.-Between 1987 and 1991 the State of Michigan stocked 145,000 yearling Arctic grayling Thymallus arcticus into 13 idand lakes and 7 streams in northern Michigan. Arctic grayling were reared in Michigan. Eggs sources were wild Arctic grayling populations in Meadow Lake, Wyoming (1987-1990 sto ...
... Abstract.-Between 1987 and 1991 the State of Michigan stocked 145,000 yearling Arctic grayling Thymallus arcticus into 13 idand lakes and 7 streams in northern Michigan. Arctic grayling were reared in Michigan. Eggs sources were wild Arctic grayling populations in Meadow Lake, Wyoming (1987-1990 sto ...
Chapter 9.
... whales, by walruses, five species of hair seals, Arctic foxes, and polar bears. Among the whales, belugas, narwhals and bowheads are migratory Arctic species that frequent the region as ice conditions permit. Killer whales live at all latitudes and migrate into Hudson Bay in summer; the minke whale ...
... whales, by walruses, five species of hair seals, Arctic foxes, and polar bears. Among the whales, belugas, narwhals and bowheads are migratory Arctic species that frequent the region as ice conditions permit. Killer whales live at all latitudes and migrate into Hudson Bay in summer; the minke whale ...
The conceptual models and management and community needs for
... ii. Satellite Imaging of Pan-Arctic Research Stations ........................................................................................188 C APPENDIX: WORKSHOP PARTICIPANTS...................................................................................................................190 i. ...
... ii. Satellite Imaging of Pan-Arctic Research Stations ........................................................................................188 C APPENDIX: WORKSHOP PARTICIPANTS...................................................................................................................190 i. ...
Provided for non-commercial research and educational use. Not for
... in stream-fish communities of the arid American southwest. In: Matthews WA and Heins DC (eds.) Ecology and Evolution of ...
... in stream-fish communities of the arid American southwest. In: Matthews WA and Heins DC (eds.) Ecology and Evolution of ...
The Marine Ecozones of Canada
... these relationships is reflected in currently vogue is dependent upon providing due care and attention to organisms (e.g. plants, animals, concepts such as sustainable development and humans,) as well as to the physical environment world conservation strategies. (e.g. soils, water, atmosphere,) of w ...
... these relationships is reflected in currently vogue is dependent upon providing due care and attention to organisms (e.g. plants, animals, concepts such as sustainable development and humans,) as well as to the physical environment world conservation strategies. (e.g. soils, water, atmosphere,) of w ...
TEMG_plan_draft_semifinal_2013_02_15
... i. Workshop 1 (October 11-13, 2011, Hvalsø, Denmark) - Designing an Arctic Terrestrial Biodiversity Monitoring Plan ................................................................................................................................................179 ii. Workshop 2 (May 15-17, 2012, Anc ...
... i. Workshop 1 (October 11-13, 2011, Hvalsø, Denmark) - Designing an Arctic Terrestrial Biodiversity Monitoring Plan ................................................................................................................................................179 ii. Workshop 2 (May 15-17, 2012, Anc ...
Migration and breeding biology of Arctic terns in Greenland. PhD
... Institute of Natural Resources (GINR) and National Environmental Research Institute, Department of Arctic Environment (NERI). The PhD was financially supported by Greenland Institute of Natural Resources (GNIR) and the Commission for Scientific Research in Greenland (KVUG). The principle supervisor ...
... Institute of Natural Resources (GINR) and National Environmental Research Institute, Department of Arctic Environment (NERI). The PhD was financially supported by Greenland Institute of Natural Resources (GNIR) and the Commission for Scientific Research in Greenland (KVUG). The principle supervisor ...
10. The Influence of Atmospheric CO2, Temperature, and Water on
... Several distinct predictions can be made with respect to photosynthesis, temperature, and atmospheric carbon dioxide (Fig. 10.3B). First, at any point in Earth’s history (and therefore at a single atmospheric CO2 level), C4 photosynthesis should be expected to occur largely in Earth’s warmer regions ...
... Several distinct predictions can be made with respect to photosynthesis, temperature, and atmospheric carbon dioxide (Fig. 10.3B). First, at any point in Earth’s history (and therefore at a single atmospheric CO2 level), C4 photosynthesis should be expected to occur largely in Earth’s warmer regions ...
22_lpp05_yran
... development of the land and if opportunities for any net ecological gain have been considered. Vegetation only be removed if there is no practical alternative form of development which would result in less destruction of the existing vegetation. The responsible authority, before it grants a permit ...
... development of the land and if opportunities for any net ecological gain have been considered. Vegetation only be removed if there is no practical alternative form of development which would result in less destruction of the existing vegetation. The responsible authority, before it grants a permit ...
Ecological monitoring in Cambridge Bay
... damaged (Danks 1992, Kim 1993, Parmesan 2006, Hoye 2013). In so doing, we will be able to better conserve these ecosystems for future generations. One way to get around our gaps in knowledge is to use model organisms to study our ecosystem – thereby focusing our resources and efforts on a single gro ...
... damaged (Danks 1992, Kim 1993, Parmesan 2006, Hoye 2013). In so doing, we will be able to better conserve these ecosystems for future generations. One way to get around our gaps in knowledge is to use model organisms to study our ecosystem – thereby focusing our resources and efforts on a single gro ...
loons - People
... This loon species is unique in being able to take off from land. The Red-throated Loon is an uncommon migrant in Kentucky. Recorded mostly in larger bodies of water such as the Green River Reservoir. ...
... This loon species is unique in being able to take off from land. The Red-throated Loon is an uncommon migrant in Kentucky. Recorded mostly in larger bodies of water such as the Green River Reservoir. ...
Upper Mantle Seismic Anisotropy Beneath the West Antarctic Rift
... Seismic anisotropy, the dependence of seismic velocities on propagation and polarization direction, has emerged as one of the best indicators of both past and present mantle deformation and flow (e.g. Silver & Chan 1988; Fischer et al. 1998; for a review see Long and Silver 2009). Mantle deformation ...
... Seismic anisotropy, the dependence of seismic velocities on propagation and polarization direction, has emerged as one of the best indicators of both past and present mantle deformation and flow (e.g. Silver & Chan 1988; Fischer et al. 1998; for a review see Long and Silver 2009). Mantle deformation ...