scholarly journals Ives, Jack D.著『Baffin Island: Field Research and High Arctic Adventure, 1961-67』

2017 ◽  
Vol 91 (1) ◽  
pp. 3-5
Keyword(s):  
Field Research ◽  
High Arctic ◽  
Baffin Island

scholarly journals Growth Rate and Salinity Profile of First-Year Sea Ice in the High Arctic

1981 ◽  
Vol 27 (96) ◽  
pp. 315-330 ◽  
Author(s):  
M. Nakawo ◽  
N. K Sinha
Keyword(s):  
Growth Rate ◽  
Sea Ice ◽  
Physical Properties ◽  
High Arctic ◽  
First Year ◽  
Baffin Island ◽  
Growth Season ◽  
Method Of Calculation ◽  
Salinity Profile ◽  
Snow Conditions

AbstractThis paper describes the growth of sea ice and the salinity profiles observed in Eclipse Sound near Pond Inlet, Baffin Island, Canada, during the winter of 1977–78. A numerical method of calculation has been developed to incorporate the variations in snow conditions and physical properties of ice and snow during the growth season. It is shown that the growth rate can be predicted reasonably well. It is also shown that the vertical salinity profile in the ice towards the end of the season, provides a record of previous climatological conditions. A dependence has been shown between the predicted growth rate and the measured salinity.

Diving behaviour of narwhals (Monodon monoceros) at two coastal localities in the Canadian High Arctic

2002 ◽  
Vol 80 (4) ◽  
pp. 624-635 ◽  
Author(s):  
Kristin L Laidre ◽  
Mads Peter Heide-Jørgensen ◽  
Rune Dietz
Keyword(s):  
Strong Relationship ◽  
High Arctic ◽  
Dive Depth ◽  
Baffin Island ◽  
Correction Factors ◽  
Canadian High Arctic ◽  
Suction Cup ◽  
Monodon Monoceros ◽  
Somerset Island ◽  
Good Agreement

In August 1999 and 2000, four suction-cup-attached time–depth recorders (TDRs) were deployed and retrieved from narwhals (Monodon monoceros) in Tremblay Sound, Baffin Island, and Creswell Bay, Somerset Island, Nunavut, Canada. The TDRs remained on the whales for between 12 and 33 h and collected 64.5 h of dive data. Mean dive depths ranged from 20.8 m (SD = 14.8 m) to 50.8 m (SD = 43.8 m) and mean dive durations ranged from 3.4 min (SD = 1.6 min) to 4.9 min (SD = 4.5 min). There appeared to be individual differences in dive parameters both within a region and between regions. Three of the whales made short, shallow dives, while another whale made dives twice as deep and twice as long. One whale had maximum dive durations (>20 min) that exceeded predicted aerobic dive limits for narwhals. There was a strong relationship between maximum dive depth and duration for all whales (p < 0.0001). Narwhals spent between 30.3 and 52.9% of their time at depths <5 m and the range of correction factors for availability bias was 1.9–3.3. Satellite-linked TDRs were simultaneously deployed on the whales at both localities. Dive data collected using the two methods were compared and good agreement between the methods was obtained.

The Lepidoptera of Greenland; Some Geographic Considerations

1966 ◽  
Vol 98 (11) ◽  
pp. 1135-1144 ◽  
Author(s):  
J. A. Downes
Keyword(s):  
North America ◽  
Vascular Plants ◽  
Large Fraction ◽  
High Arctic ◽  
Oceanic Island ◽  
Ellesmere Island ◽  
The Arctic ◽  
Baffin Island ◽  
The North ◽  
Almost All

AbstractFrom the revised list of the Lepidoptera of Greenland and from recent work in Ellesmere Island it is shown that almost all the species found in high arctic Canada occur also in Greenland, predominantly in the north, and that this high arctic element constitutes a large fraction of the fauna of Greenland as a whole. It is suggested that this part of the fauna originated entirely from the nearctic by the little-interrupted land route across the arctic islands. The poverty of southerly Lepidoptera in Greenland stands in sharp contrast. It is illustrated by a comparison with the vascular plants and by other comparisons with the Lepidoptera found in the corresponding life zones in North America, and this section of the paper includes the first published list of the Lepidoptera of Baffin Island. It is suggested that this southerly fauna is of adventitious origin, by casual dispersal from overseas (Labrador, Iceland) or perhaps in a few cases by introduction by man. Thus Greenland, in respect of its fauna of southerly type, is an oceanic island of post-glacial age. Similar evidence suggests that Iceland also has been populated mainly in the same way. The conclusions derived from the Lepidoptera apply to several other groups of insects and also to the mammals, including man.

scholarly journals A Specimen of the High Arctic Subspecies of Atlantic Puffin, Fratercula arctica naumanni, in Canada

2012 ◽  
Vol 126 (1) ◽  
pp. 50 ◽  
Author(s):  
Anthony J. Gaston ◽  
Jennifer F. Provencher
Keyword(s):  
Newfoundland And Labrador ◽  
East Coast ◽  
Breeding Site ◽  
High Arctic ◽  
Baffin Island ◽  
Fratercula Arctica ◽  
Fresh Specimen ◽  
Low Arctic ◽  
Local Hunter ◽  
Atlantic Puffin

A fresh specimen of an adult Atlantic Puffin, Fratercula arctica, was obtained from a local hunter at the Minarets (Akpait) on the east coast of Baffin Island on 3 August 2007. The measurements of this bird exceeded those of Atlantic Puffins from Newfoundland and Labrador (F. a. arctica) but fell within the limits of the High Arctic subspecies (F. a. naumanni). This specimen appears to be the first of the High Arctic subspecies to be collected on a potential breeding site in Canada. This subspecies is highly disjunct from the Low Arctic subspecies and is probably represented in Canada by only a few hundred individuals.

Pre-Dorset and Dorset Artifacts: The View from Lake Harbour

1976 ◽  
Vol 31 ◽  
pp. 58-78 ◽  
Author(s):  
Moreau S. Maxwell
Keyword(s):  
Information Exchange ◽  
Technological Development ◽  
High Arctic ◽  
Baffin Island ◽  
Cultural Changes ◽  
The Core ◽  
Cultural Conformity ◽  
Lithic Artifacts ◽  
Victoria Island ◽  
Available Information

Throughout the geographic and temporal range of dorset there is little yet documented to indicate major cultural changes. The Pre-Dorset part of the Paleoeskimo continuum is better known by its lithic artifacts, and to date too few sites have produced non-lithic ones to afford a clear picture of technological development. On the other hand, there is enough available information on the two periods to indicate that some non-lithic artifacts reflect a regularity in the shifting styles of discrete attributes over those thirty-five hundred years involved. Such minor style shifts do not readily appear functional in the sense of producing a more efficiently adaptive weapon, and some seem to entail more manufacturing energy coupled to greater risk of breakage without apparent gain in efficiency. Regardless of the reasons for these changes in style, they appear to occur simultaneously over relatively broad areas and appear to indicate an intensity of information exchange and cultural conformity within such areas. This is most notable within what has been called the core area (see Introduction): a region including North Baffin and Bylot Islands, the Fury and Hecla Straits, Southampton, Coats, and Mansel Islands, both shores of Hudson Strait, and southern Baffin Island at least as far north as Cumberland Sound. As McGhee (this volume) has suggested, there are periods in which this stylistic homogeneity extended into the High Arctic, and different periods in which the Central Arctic as far west as Victoria Island (but not the High Arctic) participated in many of these discrete style shifts.

scholarly journals Narwhal Abundance in the Eastern Canadian High Arctic in 2013

2020 ◽  
Vol 11 ◽  
Author(s):  
Thomas Doniol-Valcroze ◽  
Jean-François Gosselin ◽  
Daniel G. Pike ◽  
Jack W. Lawson ◽  
Natalie C. Asselin ◽  
...  
Keyword(s):  
Distance Sampling ◽  
High Arctic ◽  
Aerial Survey ◽  
Baffin Island ◽  
Species Identity ◽  
Baffin Bay ◽  
Dive Behaviour ◽  
Declination Angle ◽  
Track Line ◽  
Admiralty Inlet

In summer, narwhals (Monodon monoceros) migrate from Baffin Bay to northeastern Canada and northwest Greenland, where they are hunted by Inuit for subsistence. To prevent localized depletion, management of narwhals is based on summer stocks. The High Arctic Cetacean Survey (HACS), conducted in August 2013, was the first survey to estimate abundance of all 4 Canadian Baffin Bay narwhal summer stocks, as well as putative stocks in Jones Sound and Smith Sound, in the same summer. Narwhal abundance was estimated using a double-platform aerial survey. Distance sampling methods were used to estimate detection probability away from the track line. Mark-recapture methods were used to correct for the proportion of narwhals missed by visual observers on the track line (i.e., perception bias). We used a data-driven approach to identify single and duplicate sightings, using 4 covariates to compare differences in sightings made by front and rear observers based on: time of sighting, declination angle, group size, and species identity. Abundance in fjords was estimated using density surface modelling to account for their complex shape and uneven coverage. Estimates were corrected for availability bias (narwhals that are not available for detection because they are submerged when the aircraft passes overhead) using a new analysis of August dive behaviour data from narwhals equipped with satellite-linked time depth recorders. Corrected abundance estimates were 12,694 (95% CI: 6,324–25,481) for the Jones Sound stock; 16,360 (95% CI: 3,833–69,836) for the Smith Sound stock; 49,768 (95% CI: 32,945–75,182) for the Somerset Island stock; 35,043 (95% CI: 14,188–86,553) for the Admiralty Inlet stock; 10,489 (95% CI: 6,342–17,347) for the Eclipse Sound stock; and 17,555 (95% CI: 8,473–36,373) for the East Baffin Island stock. Total abundance for these 6 stocks was estimated at 141,908 (95% CI: 102,464–196,536). Sources of uncertainty arise from the high level of clustering observed, in particular in Admiralty Inlet, Eclipse Sound, and East Baffin Island, as well as the difficulty in identifying duplicate sightings between observers when large aggregations were encountered.

Chrysophycean stomatocysts from the postglacial sediments of Tasikutaaq Lake, Baffin Island, N.W.T.

1989 ◽  
Vol 67 (6) ◽  
pp. 1649-1656 ◽  
Author(s):  
Katharine E. Duff ◽  
John P. Smol
Keyword(s):  
Working Group ◽  
Ice Cover ◽  
High Arctic ◽  
Baffin Island ◽  
Arctic Lake

Twenty chrysophycean stomatocysts were described from the postglacial sediments of a Mid Arctic lake (Tasikutaaq Lake, Baffin Island, N.W.T.). The description guidelines of the International Statospore Working Group were followed. Elements of both High Arctic and temperate cyst floras were present, and approximately one-third of the cysts were described as new. Stomatocyst degradation was common and may be related to the degree of ice cover on the lake.

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