Collembola of the Canadian high arctic. Review and additional records

1986 ◽  
Vol 64 (10) ◽  
pp. 2386-2390 ◽  
Author(s):  
Arne Fjellberg
Keyword(s):  
New Records ◽  
High Arctic ◽  
Ellesmere Island ◽  
Canadian High Arctic

A revised list of species from the Queen Elizabeth Islands is given, including new records from Ellesmere, Devon, Cornwallis, Bathurst, King Christian, and Ellef Ringnes islands. Fifty species are reported (43 named and 7 unnamed), with the highest number from Ellesmere Island (41). About 75% of the species in the area have a circumpolar or holarctic distribution.

Ellesmerian and Eurekan fault tectonics at the northern margin of Ellesmere Island (Canadian High Arctic)

2013 ◽  
Vol 164 (1) ◽  
pp. 81-105 ◽  
Author(s):  
Karsten Piepjohn ◽  
Werner von Gosen ◽  
Andreas Läufer ◽  
William C. McClelland ◽  
Solveig Estrada
Keyword(s):  
High Arctic ◽  
Ellesmere Island ◽  
Canadian High Arctic ◽  
Northern Margin ◽  
Fault Tectonics

scholarly journals Evidence of a Periodic Ice-Cliff Avalanche on North-West Ellesmere Island, N.W.T., Canadian High Arctic

1987 ◽  
Vol 33 (113) ◽  
pp. 68-71 ◽  
Author(s):  
D. J. A. Evans ◽  
T. G. Fisher
Keyword(s):  
High Arctic ◽  
Ellesmere Island ◽  
Canadian High Arctic ◽  
Periodic Activity ◽  
North West ◽  
Ice Cap ◽  
Melt Water

AbstractEvidence of a recent (1985) ice-cliff avalanche from an outlet lobe of a small plateau ice cap on north-west Ellesmere Island is discussed. Former avalanche events are evidenced by debris lying outside the 1985 avalanche material. Periodic activity seems to be linked to the build-up of melt water in the crevasses of the outlet lobe during the melt season. The exact magnitude and frequency of events are unknown. Some implications to geomorphology and the sedimentology of sub-polar glaciers are discussed.

Flowers, insects, and pollination ecology in the Canadian high Arctic

Polar Record ◽  
1973 ◽  
Vol 16 (104) ◽  
pp. 667-674 ◽  
Author(s):  
Peter G. Kevan
Keyword(s):  
High Arctic ◽  
Pollination Ecology ◽  
Ellesmere Island ◽  
Ecological Problem ◽  
Canadian High Arctic ◽  
Mountain Ranges ◽  
The North ◽  
Low Arctic ◽  
Work Done

The following report is based on work done in conjunction with the Canadian “Operation Hazen-Tanquary” at Hazen Camp (81° 49'N, 71° 18'W), Ellesmere Island, NWT, in the summers of 1966, 1967, and 1968. Hazen Camp offers an excellent high Arctic site because of the extensive facilities available and because the botany and entomology are comparatively well known and some insect-flower relationships there have already been considered. Furthermore, the Lake Hazen trough, sheltered by mountain ranges to the north, enjoys less cloudy and more benign summers than most high Arctic localities. These factors contribute to the support of a biota that is relatively rich for the high Arctic, even though the ecosystem is considerably simpler than in the low Arctic. There are only about 75 species of Dicotyledoneae and about 250 species of Arthropoda to consider, which makes it possible for one man to investigate such a broad ecological problem as insect-flower relations.

A new species and four new records of sedentary polychaetes from the Canadian High Arctic

2016 ◽  
Vol 97 (8) ◽  
pp. 1685-1694 ◽  
Author(s):  
Eduardo López ◽  
Fredéric Olivier ◽  
Cindy Grant ◽  
Philippe Archambault
Keyword(s):  
New Species ◽  
New Records ◽  
Benthic Communities ◽  
Ventral Side ◽  
High Arctic ◽  
The Body ◽  
Similar Species ◽  
Canadian High Arctic ◽  
Polychaete Species ◽  
A New Species

During ArcticNet surveys aboard ‘CCGS Amundsen’ in 2011, several subtidal stations located in Canadian Archipelago were sampled in order to study the composition of their benthic communities. Among the abundant material sampled, several specimens of rare polychaete species were found. Examination of this material showed four species not previously recorded in the area, and a new species described herein. Descriptions of these specimens are given in this work.Ophelina brattegardiKongsrudet al., 2011 is characterized by a body composed of 27–28 chaetigers, by having the parapodia of the last four chaetigers shifted to the ventral side of the body, and by lacking branchiae in mid-body chaetigers.Macrochaeta polyonix Eliason, 1962 is unique within the genus in having several (instead of one or two) compound neurochaetae in anterior parapodia.Chaetozone acutaBanse & Hobson, 1968 is characterized by having spines from anterior third of the body and arranged in bundles composed of just a few chaetae.Chaetozone jubataChambers & Woodham, 2003 can be distinguished from similar species by having very long capillary chaetae from chaetiger 2 or 3. Finally,Dialychone hervyaen. sp. is characterized by bearing four pairs of radioles with narrow flanges, by the bilobed tip of its first peristomial ring that projects beyond the collar, and by the paleate thoracic notochaetae bearing long mucros.

scholarly journals Evidence of a Periodic Ice-Cliff Avalanche on North-West Ellesmere Island, N.W.T., Canadian High Arctic

1987 ◽  
Vol 33 (113) ◽  
pp. 68-71
Author(s):  
D. J. A. Evans ◽  
T. G. Fisher
Keyword(s):  
High Arctic ◽  
Ellesmere Island ◽  
Canadian High Arctic ◽  
Periodic Activity ◽  
North West ◽  
Ice Cap ◽  
Melt Water

AbstractEvidence of a recent (1985) ice-cliff avalanche from an outlet lobe of a small plateau ice cap on north-west Ellesmere Island is discussed. Former avalanche events are evidenced by debris lying outside the 1985 avalanche material. Periodic activity seems to be linked to the build-up of melt water in the crevasses of the outlet lobe during the melt season. The exact magnitude and frequency of events are unknown. Some implications to geomorphology and the sedimentology of sub-polar glaciers are discussed.

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