scholarly journals Diet of the ringed seal (Phoca hispida) in Greenland

1998 ◽  
Vol 1 ◽  
pp. 229 ◽  
Author(s):  
Helle Siegstad ◽  
Pia Barner Neve ◽  
Mads Peter Heide-Jørgensen ◽  
Tero Härkönen
Keyword(s):  
Prey Item ◽  
Open Water ◽  
Polar Cod ◽  
Phoca Hispida ◽  
Greenland Halibut ◽  
Arctic Cod ◽  
East Greenland ◽  
West Greenland ◽  
Important Prey ◽  
Age Related

Analysis of 454 stomachs of ringed seals (Phoca hispida) collected from the Inuit hunt in six municipalities in West Greenland and 30 alimentary tracts collected by scientists in East Greenland, showed seasonal and regional differences in the diet. In Northwest and East Greenland polar cod (Boreogadus saida) and Arctic cod (Arctogadus glacialis) were the most dominant prey items. In contrast, seals in central West Greenland mainly preyed upon amphipods (Parathemisto spp.), capelin (Mallotus villosus), redfish (Sebastes sp.) and squid (Gonatus sp.), while capelin was the most important prey item in Southwest Greenland. The material from Uummannaq demonstrates seasonal variations, as euphausiids were common in spring, and snailfish (Liparis spp.) dominated from October through January, where after snailfish disappeared with the formation of fast ice. No age related differences in the diet were found in stomach samples from Avanersuaq, but in Upemavik crustaceans were more abundant in stomach samples from younger immature seals. Greenland halibut (Reinhardtius hippoglossoides) was only present in samples from seals older than 4 years. In Upemavik Arctic cod was the dominant prey item for seals caught in May at the iceedge, whereas polar cod dominated the samples from seals caught in open water.

Summer diet of the narwhal (Monodon monoceros) in Pond Inlet, northern Baffin Island

1982 ◽  
Vol 60 (12) ◽  
pp. 3353-3363 ◽  
Author(s):  
K. J. Finley ◽  
E. J. Gibb
Keyword(s):  
Age Groups ◽  
Stomach Contents ◽  
Late Summer ◽  
Polar Cod ◽  
Greenland Halibut ◽  
Arctic Cod ◽  
Deep Diving ◽  
Monodon Monoceros ◽  
Measured Weight ◽  
Greenland Halibut Reinhardtius Hippoglossoides

Stomach contents of 73 narwhals (Monodon monoceros) taken in Pond Inlet during June to September 1978–1979 were examined. Arctic cod (Boreogadus saida) and Greenland halibut (Reinhardtius hippoglossoides) comprised 51% and 37%, respectively, of the diet by weight. Arctic cod contributed 57% in 1978 but only 29% in 1979. Squid (Gonatus fabricii) beaks were abundant but not representative of recent intake. Deepwater fish (halibut, redfish (Sebastes marinus), and polar cod (Arctogadus glacialis)), found primarily in male narwhals, indicate a deep diving (>500 m) capability. The largest measured weight of stomach contents was 10.1 kg and weights projected from otoliths did not exceed 19.6 kg. No selection of prey items by size was evident amongst various sex and age groups of narwhals. Feeding was most intensive at the ice edge and ice cracks but little feeding took place in the fiords during late summer. Blubber thickness declined in females but not in males during the summer. The significance of traditional summering areas appears to be related to calving requirements and not to feeding opportunities.

Feeding Habits of Northeast Atlantic Harp Seals (Phoca groenlandica) along the Summer Ice Edge of the Barents Sea

1991 ◽  
Vol 48 (11) ◽  
pp. 2180-2183 ◽  
Author(s):  
Christian Lydersen ◽  
Lars Anker Angantyr ◽  
Øystein Wiig ◽  
Torger Øritsland
Keyword(s):  
Barents Sea ◽  
Feeding Habits ◽  
Boreogadus Saida ◽  
Greenland Halibut ◽  
Important Prey ◽  
Phoca Groenlandica ◽  
The Barents Sea ◽  
Age Related ◽  
Greenland Halibut Reinhardtius Hippoglossoides ◽  
Benthic Fishes

Stomachs from 58 harp seals (Phoca groenlandica) from the northern part of the Barents Sea were collected between August 20 and September 5, 1987. Fifty-six of the stomachs contained identifiable remains. The amphipod Parathemisto libellula was the most common food item, found in 98% of the seal stomachs and constituting 57.9% of the total volume. Fish were the second most important prey group, with Arctic cod (Boreogadus saida) as the dominant species followed by Nybelin's sculpin (Triglops nybelini) and Greenland halibut (Reinhardtius hippoglossoides). Decapods, mainly Pandalus borealis, were also common as prey of harp seals. No sex- or age-related differences in choice of food were found. From knowledge of the depths at locations where seals were collected and the presence of fresh benthic fishes in the seal stomachs, it is assumed that harp seals could forage at depths below 300 m.

scholarly journals Feeding habits of harp and hooded seals in Greenland waters

2000 ◽  
Vol 2 ◽  
pp. 50 ◽  
Author(s):  
Finn O Kapel
Keyword(s):  
Gadus Morhua ◽  
Atlantic Cod ◽  
Feeding Habits ◽  
Stomach Contents ◽  
Minor Role ◽  
Published Data ◽  
Polar Cod ◽  
Small Fish ◽  
Greenland Halibut ◽  
Important Prey

Results of stomach contents analyses of harp and hooded seals collected in West Greenland waters in the period 1986-1993 are reviewed, and compared with published data and circumstantial information from local hunters. The diet of harp seals in this region is variable but consists mainly of pelagic crustaceans (Thysanoessa spp. and Parathemisto libellula) and small fish species like capelin (Mallotus villosus), sandeel (Ammodytes spp.), polar cod (Boreogadus saida) and Arctic cod (Arctogadus glacialis). Species of importance for commercial fisheries in Greenland, such as Northern prawn (Pandalus borealis), Atlantic cod (Gadus morhua), and Greenland halibut (Reinhardtius hippoglossoides) play a minor role in the diet of harp seals in this area.Variation in the diet of hooded seals is less well documented, but in addition to the species also taken by harp seals, larger demersal fishes like Greenland halibut, redfish (Sebastes spp.), cod, and wolffish (Anarhichas minor) are apparently important prey items.

Mantle xenoliths from Tertiary lavas and dykes on Ubekendt Ejland, West Greenland

1998 ◽  
pp. 152-154
Author(s):  
Stefan Bernstein ◽  
C. Kent Brooks
Keyword(s):  
Field Work ◽  
Mantle Xenoliths ◽  
Alkaline Basalt ◽  
Basalt Flow ◽  
Volcanic Province ◽  
East Greenland ◽  
Original Series ◽  
West Greenland ◽  
Ultramafic Xenoliths ◽  
Extensive Collection

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Bernstein, S., & Brooks, C. K. (1998). Mantle xenoliths from Tertiary lavas and dykes on Ubekendt Ejland, West Greenland. Geology of Greenland Survey Bulletin, 180, 152-154. https://doi.org/10.34194/ggub.v180.5099 _______________ Mantle xenoliths were found in Tertiary alkaline (basanitic) lavas on Ubekendt Ejland in West Greenland in the mid 1970s by J.G. Larsen. Microprobe analyses of olivine, pyroxene and spinel in two mantle xenoliths, suggested that the xenoliths on Ubekendt Ejland are highly depleted and have high modal olivine contents, and low modal orthopyroxene and clinopyroxene (Larsen 1982). In this respect the mantle xenoliths from Ubekendt Ejland are very similar to the spinel harzburgites from Wiedemann Fjord, in the Tertiary volcanic province of East Greenland (Brooks & Rucklidge 1973; Bernstein et al. 1998). Larsen (1981) also reported dykes containing mantle nodules and a varied suite of cumulates and megacrysts, one of which has subsequently been dated to 34.1 ± 0.2 Ma (Storey et al. 1998) The basalt flow that carries the xenoliths is from what is defined as the Erqua Formation which occurs at the top of the lava succession in western Ubekendt Ejland (Fig. 1; Drever & Game 1948; Larsen 1977a, b). The basalts have not been dated, but are younger than 52.5 Ma, which is the date obtained for the underlying formation (Storey et al. 1998). During July 1997, we spent three weeks collecting xenoliths and prospecting for xenolith-bearing dykes in the Uummannaq district of central West Greenland. The field work resulted in an extensive collection of xenoliths from an alkaline basalt flow described by Larsen (1977a, b), as well as the discovery of a dyke carrying a large number of ultramafic xenoliths of various origins. 

The year in focus, 2000

2001 ◽  
pp. 7-10
Author(s):  
Kai Sørensen
Keyword(s):  
Geological Mapping ◽  
Geological Survey ◽  
Seismic Survey ◽  
East Greenland ◽  
Major Field ◽  
Original Series ◽  
West Greenland ◽  
Level Of Activity ◽  
Field Activity ◽  
Year 2000

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Sørensen, K. (2001). The year in focus, 2000. Geology of Greenland Survey Bulletin, 189, 7-10. https://doi.org/10.34194/ggub.v189.5148 _______________ The year 2000 was unusual in that it lacked major field activity directly involved with the systematic geological mapping of Greenland. However, field activities were again many and varied, including a successful highresolution seismic survey offshore central West Greenland, and a joint Geological Survey of Denmark and Greenland (GEUS) – Danish Lithosphere Centre (DLC) project centred on Kangerlussuaq in southern East Greenland. Of the Survey’s 354 personnel, 93 were allocated to Greenland-related activities (Table 1). The Greenland level of activity in 2000, both in Copenhagen and in the field, thus compared favourably with that of 1999.

scholarly journals Variation in skull bone mineral density of ringed seals (Phoca hispida) from the Gulf of Bothnia and West Greenland between 1829 and 2019

2020 ◽  
Vol 143 ◽  
pp. 105968 ◽  
Author(s):  
Britta Schmidt ◽  
Christian Sonne ◽  
Dominik Nachtsheim ◽  
Rune Dietz ◽  
Ralf Oheim ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Skull Bone ◽  
Phoca Hispida ◽  
Mineral Density ◽  
West Greenland ◽  
Ringed Seals ◽  
Gulf Of Bothnia

scholarly journals Holocene shore-lines and glacial stages in Greenland - an attempt at correlation

1972 ◽  
Vol 41 ◽  
pp. 1-39
Author(s):  
A Weidick
Keyword(s):  
North America ◽  
Current Literature ◽  
Younger Dryas ◽  
Low Pressure ◽  
East Greenland ◽  
West Greenland ◽  
History Of ◽  
Climatic Optimum ◽  
North Greenland

Post-Wisconsinian uplift of West, North and East Greenland has been estimated on the basis of information in current literature and compared to the data collected by the author in central West Greenland. For West and North Greenland the dated uplift allows an estimate to be made of the age of former shore-lines, which in turn have been used to date the stages of the extent of the Inland lce. The results have been compared with published information on the age of glacial stages in East Greenland. The estimated ages of the ice margin stages imply a history of deglaciation in West (and North?) Greenland comparable to that of North America. In both areas the major deglaciation took place after the Younger Dryas and a marked halt took place in Boreal times. It is possibie that the history of East Greenland is more closely related to that of Scandinavia where a widespread deglaciation took place prior to the Younger Dryas. The deglaciation of North Greenland was interrupted by a marked readvance or readvances during the climatic optimum. It is possible that the northward shift of the low pressure centres during this period led to an increased accumulation on the northern part of the Inland lce.

Feeding ecology of Greenland halibut and sandeel larvae off West Greenland

2006 ◽  
Vol 149 (4) ◽  
pp. 937-952 ◽  
Author(s):  
C. S. Simonsen ◽  
P. Munk ◽  
A. Folkvord ◽  
S. A. Pedersen
Keyword(s):  
Feeding Ecology ◽  
Greenland Halibut ◽  
West Greenland
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