Some Aspects of Growth and Reproduction of the Bearded Seal, Erignathus barbatus (Erxleben)

1958 ◽  
Vol 15 (2) ◽  
pp. 219-227 ◽  
Author(s):  
I. A. McLaren
Keyword(s):  
Canadian Arctic ◽  
Tail Length ◽  
Growth Patterns ◽  
First Year ◽  
Bearded Seal ◽  
Erignathus Barbatus ◽  
Final Length ◽  
Preliminary Study ◽  
Eastern Canadian Arctic ◽  
Growth And Reproduction

This preliminary study is based on material from 113 specimens from the eastern Canadian Arctic. Animals may be aged from the claws up to 9 to 16 years. The male matures at 7 and the female at 6 years. The pup is produced around May 1 and the males are probably in full rut in mid-May. Females which have produced a pup forego ovulation until after the male rut, thus establishing a two-year cycle of pup production. The embryo implants during a 11/2-month period around early August, after 21/2 months of delay in development. The animal grows from 120 cm. in nose–tail length at birth to about 235 cm. The female increases her length by about 33% in the first year and reaches about 91% of her final length at puberty, at 6 years; these figures are somewhat larger than expected from the growth patterns of other Pinnipedia.

Conodont paleontology and biostratigraphy of Ordovician carbonates and petroliferous carbonates on Southampton, Baffin, and Akpatok islands in the eastern Canadian Arctic

1989 ◽  
Vol 26 (10) ◽  
pp. 1880-1903 ◽  
Author(s):  
Alexander D. McCracken ◽  
Godfrey S. Nowlan
Keyword(s):  
Canadian Arctic ◽  
Bedding Plane ◽  
Baffin Island ◽  
Jordan River ◽  
Oil Shales ◽  
Age Range ◽  
Eastern Canadian Arctic

Carbonate and petroliferous carbonate units ("oil shales") on Southampton, Baffin, and Akpatok islands have yielded a total of 2277 conodonts, the more biostratigraphically useful of which indicate not all units are correlative. The Boas River "shale", the lower of the two petroliferous units on Southampton Island, overlies the Bad Cache Rapids Group and contains a diverse fauna, including elements of Amorphognathus ordovicicus Branson and Mehl. Previous reports have indicated the presence of Culumbodina penna Sweet, a species whose range only barely overlaps that of A. ordovicicus in the middle Maysvillian. Carbonate beds and bedding-plane surfaces of the higher Red Head Rapids Formation at Sixteen Mile Brook yielded A. ordovicicus faunas containing Aphelognathus cf. A. divergens Sweet. These beds are likely Richmondian, since A. divergens is known elsewhere only from Richmondian strata. A metasicula of "Glyptograptus" hudsoni Jackson, several natural conodont assemblages, and fused enigmatic coniform elements were also found at Sixteen Mile Brook.The petroliferous unit in unnamed strata at Amadjuak Lake on Baffin Island contains Belodina area Sweet, which is indicative of a late Edenian to early Maysvillian age. Conodonts from the petroliferous strata at Jordan River on Baffin Island suggest a Trentonian to early Maysvillian age. The conodonts recovered from unnamed strata on Akpatok Island are not very diagnostic but indicate an age range from Shermanian to Gamachian.

scholarly journals Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic

2013 ◽  
Vol 7 (8) ◽  
pp. 1461-1471 ◽  
Author(s):  
Kasia Piwosz ◽  
Józef Maria Wiktor ◽  
Andrea Niemi ◽  
Agnieszka Tatarek ◽  
Christine Michel
Keyword(s):  
Sea Ice ◽  
Functional Diversity ◽  
Canadian Arctic ◽  
First Year

PEER FEEDBACK TECHNIQUE IN IMPROVING THE STUDENTS’ WRITING ABILITY OF THE FIRST GRADE STUDENTS IN SMA NEGERI BALIKPAPAN

2020 ◽  
Vol 3 (1) ◽  
pp. 117-131
Author(s):  
Dayang Suriani
Keyword(s):  
Learning Process ◽  
Teaching And Learning ◽  
Peer Feedback ◽  
First Grade ◽  
First Year ◽  
First Year Students ◽  
Writing Ability ◽  
Preliminary Study ◽  
Academic Year ◽  
Writing Practice

This study is directed to obtain information how peer feedback can improve students’ ability in writing. Specifically, it is directed to investigate whether peer feedback works and can improve students’ writing ability in writing sentences and narrative paragraphs, at the first year students of SMA Negeri 1 Balikpapan. The study was conducted based on the result of preliminary study at the school. It is found that the students’ ability in the language skills especially in writing is still insufficient. In the teaching and learning process the teacher provides fewer portions in writing activities for the students in class. In addition, the strategies used in the teaching and learning process are uninteresting because the students have to do the writing activities in under pressure. To answer the problems, a classroom action research is conducted. The teacher as a researcher works in planning the action, implementing the action, observing, and analyzing and reflecting the action. The subjects of the study are the second year students (X-IPA-1) of 2019/2020 academic year consisting of 40 students. The results shows that peer feedback obviously can improve the students’ ability in writing sentences and narrative paragraphs at the first year students of SMA Negeri 1 Balikpapan. It has been observed that the improvements are caused by the regular writing practice done by the students and the teacher’s response given to their writing. It becomes a sort of on going dialogue.

An early nineteenth century meteorological register from the eastern Canadian Arctic

Polar Record ◽  
1995 ◽  
Vol 31 (178) ◽  
pp. 335-342 ◽  
Author(s):  
Paul A. Kay
Keyword(s):  
Nineteenth Century ◽  
Canadian Arctic ◽  
The Arctic ◽  
Research Centre ◽  
Historical Reconstruction ◽  
Early Nineteenth Century ◽  
Northwest Passage ◽  
Time Periods ◽  
Modern Experience ◽  
Eastern Canadian Arctic

AbstractSignificant warming in the Arctic is anticipated for doubled-CO2 scenarios, but temperatures in the eastern Canadian Arctic have not yet exhibited that trend in the last few decades. The spatial juxtaposition of the winter station in 1822–1823 of William Edward Parry's Northwest Passage expedition with the modern Igloolik Research Centre of the Science Institute of the Northwest Territories affords an opportunity for historical reconstruction and comparison. Parry's data are internally consistent. The association of colder temperatures with westerly and northerly winds, and wanner temperatures with easterly and southerly winds, is statistically significant. Temperatures are not exactly comparable between the two time periods because of differences in instrumentation, exposure, and frequency of readings. Nevertheless, in 1822–1823, November and December appear to have been cold and January to March mild compared to modern experience. Anomalously, winds were more frequently northerly (and less frequently westerly) in the latter months than in recent observations. Parry recorded two warm episodes in mid-winter, but, overall, it appears that the winter of 1822–1823 was not outside the range of modern experience.

scholarly journals Rare earth elements in freshwater, marine, and terrestrial ecosystems in the eastern Canadian Arctic

2017 ◽  
Vol 19 (10) ◽  
pp. 1336-1345 ◽  
Author(s):  
Gwyneth Anne MacMillan ◽  
John Chételat ◽  
Joel P. Heath ◽  
Raymond Mickpegak ◽  
Marc Amyot
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Canadian Arctic ◽  
Terrestrial Ecosystems ◽  
Eastern Canadian Arctic

Rare earth elements show consistent bioaccumulation patterns yet limited biomagnification in remote northern ecosystems.

Energy intake and utilisation by nursing bearded seal (Erignathus barbatus) pups from Svalbard, Norway

1996 ◽  
Vol 166 (7) ◽  
pp. 405-411 ◽  
Author(s):  
C. Lydersen ◽  
K. M. Kovacs ◽  
M. O. Hammill ◽  
I. Gjertz
Keyword(s):  
Energy Intake ◽  
Bearded Seal ◽  
Erignathus Barbatus
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