Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Activity and movement patterns of polar bears inhabiting consolidated versus active pack ice
Autore:
Ferguson, SH; Taylor, MK; Born, EW; Rosing-Asvid, A; Messier, F;
Indirizzi:
Lakehead Univ, Fac Forestry & Forest Environm, Thunder Bay, ON P7B 5E1, Canada Lakehead Univ Thunder Bay ON Canada P7B 5E1 under Bay, ON P7B 5E1, Canada Greenland Inst Nat Resources, DK-3900 Nuuk, Greenland Greenland Inst Nat Resources Nuuk Greenland DK-3900 3900 Nuuk, Greenland Univ Saskatchewan, Dept Biol, Saskatoon, SK S7N 5E2, Canada Univ Saskatchewan Saskatoon SK Canada S7N 5E2 skatoon, SK S7N 5E2, Canada
Titolo Testata:
ARCTIC
fascicolo: 1, volume: 54, anno: 2001,
pagine: 49 - 54
SICI:
0004-0843(200103)54:1<49:AAMPOP>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEALS PHOCA-HISPIDA; URSUS-MARITIMUS; SOUTHERN-OCEAN; ECOLOGY; HABITAT;
Keywords:
Canadian-West Greenland Arctic; polar bears; predator-prey; radiotelemetry; rate of movement; sea ice; seals; seasonal patterns; sheltering; Ursus maritimus;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Ferguson, SH Lakehead Univ, Fac Forestry & Forest Environm, 955 Oliver Rd,Thunder Bay,ON P7B 5E1, Canada Lakehead Univ 955 Oliver Rd Thunder Bay ON Canada P7B 5E1 ada
Citazione:
S.H. Ferguson et al., "Activity and movement patterns of polar bears inhabiting consolidated versus active pack ice", ARCTIC, 54(1), 2001, pp. 49-54

Abstract

We investigated the influence of ice conditions on activity and movement patterns of polar bears in the Canadian-West Greenland Arctic. We used radiotelemetry data gathered over 11 years (1989-99) from 160 adult female polarbears to test for differences in movement and activity of bears inhabitingactive ice and consolidated ice. Bears inhabiting active ice moved more than those inhabiting consolidated ice (12 versus 8 km/day), but their activity throughout the year did not differ (bears of both groups were active for21% of the day). Differences in activity and movement of bears in the two study areas appeared to be related to differences in predominant ice conditions and presumed prey availability. Seals, particularly juveniles, are most plentiful in spring and summer, when polar bears moved more and were mostactive. During winter, when juvenile seals were less available in consolidated ice areas, bears in that habitat were less active and moved less than bears in active ice areas. Polar bears have evolved flexible patterns of seasonal activity, movements, and facultative den use as adaptations to different sea-ice environments.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/07/20 alle ore 00:24:30