Movements of Young Wolves in the Northwest Territories of Canada

Kuyt, Ernie

doi:10.2307/1377111

Cited by 15 publications

(7 citation statements)

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“…Long-range movements of wolves have hitherto been recorded by aerial and radio-tracking methods or by recapture of marked animals. Banfield (1953), from the Canadian mid-west, and Kuyt (1962), from the Northwest Territories, quote movements of up to 300 km, recorded by tagging and recapture. Burton (1973) cites an example from Alaska of a single animal that travelled over 1000 km in a six-week period, while Pulliainen (1965) puts the travelled distance of a wolf in Finland, apparently under the pressure of a chase, as high as 200 km a day.…”

Section: Travelling Distances and Speedsmentioning

confidence: 99%

The Wolf (<i>Canis lupus</i>) in Greenland: A Historical Review and Present Status

Dawes¹,

Elander²,

Ericson³

1986

ARCTIC

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In the past few decades, little information on the wolf (Canis lupus) in Greenland has been published. The decline of the species and its extirpation in the late 1930s from East Greenland is well documented. Since then, there has been a tendency for wolves sighted in the North and East Greenland National Park to be classified as temporary visitors wandering afar from adjacent Canada, with no prospect of survival in Greenland for anything but a short period. In view of the virtual absence of human population in this vast region, that assumption may not be accurate.There is now abundant evidence to indicate that a renewed immigration and dispersal of wolves has been taking place during the last years, with a migration route from Ellesmere Island eastward across North Greenland into Peary Land, and then southward into the fjord region of central East Greenland. The wolf is reoccupying its former range and by the winter of 1983 wolves had reached the Scoresby Sund region the species' southernmost temtory of the 1930s.Examination of the published records and all available unpublished data provides a historical picture of the status of the wolf in Greenland, from which some conclusions can be made regarding populations, pack size, migration routes, feeding habits and travelling distances.

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Section: Travelling Distances and Speedsmentioning

confidence: 99%

The Wolf (<i>Canis lupus</i>) in Greenland: A Historical Review and Present Status

Dawes¹,

Elander²,

Ericson³

1986

ARCTIC

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“…These factors made direct dietary interpretation illogical, so dietary compositions reported from a nearby caribou herd in fall/winter, spring and summer were used to test the effects of a variable diet (see methods and SI) . The wolves in the Bathurst Region are known to feed primarily on caribou from this area, an observation supported by the overlap of the δ 13 C in wolves (−23.1 ± 0.643 ‰) compared with that of caribou (−23.3 ± 0.255 ‰).…”

Section: Results and Discussionmentioning

confidence: 99%

Bioaccumulation of Polybrominated Diphenyl Ethers and Alternative Halogenated Flame Retardants in a Vegetation–Caribou–Wolf Food Chain of the Canadian Arctic

Morris

Muir

Solomon

et al. 2018

Environ. Sci. Technol.

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The trophodynamics of halogenated flame retardants (HFRs) including polybrominated diphenyl ethers (PBDEs) and alternative HFRs were investigated in the terrestrial, vegetation–caribou–wolf food chain in the Bathurst Region of northern Canada. The greatest concentrations in vegetation (geometric mean of lichens, moss, grasses, willow, and mushrooms) were of the order 2,4,6-tribromophenyl allyl ether (TBP-AE) (10 ng g–1 lw) > BDE47 (5.5 ng g–1 lw) > BDE99 (3.9 ng g–1 lw) > BDE100 (0.82 ng g–1 lw) > 1,2,3,4,5-pentabromobenzene (PBBz) (0.72 ng g–1 lw). Bioconcentration among types of vegetation was consistent, though it was typically greatest in rootless vegetation (lichens, moss). Biomagnification was limited in mammals; only BDE197, BDE206–208 and ∑PBDE biomagnified to caribou from vegetation [biomagnification factors (BMFs) = 2.0–5.1]. Wolves biomagnified BDE28/33, BDE153, BDE154, BDE206, BDE207, and ∑PBDE significantly from caribou (BMFs = 2.9–17) but neither mammal biomagnified any alternative HFRs. Only concentrations of BDE28/33, BDE198, nonaBDEs, and ∑PBDE increased with trophic level, though the magnitude of biomagnification was low relative to legacy, recalcitrant organochlorine contaminants [trophic magnification factors (TMFs) = 1.3–1.8]. Despite bioaccumulation in vegetation and mammals, the contaminants investigated here exhibited limited biomagnification potential and remained at low parts per billion concentrations in wolves.

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“…During 2009-2022, we captured 166 whooping cranes at sites along coastal Texas and in and around Wood Buffalo National Park, Canada and marked them with leg-mounted transmitters capable of collecting locations using global position system capabilities and transmitting data using platform transmitting terminals (North Star Science and Technology LLC, Baltimore, MD, United States; Geotrak, Inc., Apex, NC, United States) or Global System for Mobiles and Global Packet Radio Service third and fourth generation cellular networks (Ornitela, Vilnius, Lithuania). We used helicopters to locate pre-fledged juveniles at breeding sites in Canada and captured individuals by hand (Kuyt, 1979). At nonbreeding sites in Texas, we captured adult and juvenile cranes with leg snares (Folk et al, 2005) Our analyses used location data from 145 individuals, collected in the study area during spring (inter-quartile range [IQR] = 4 Apr-23 Apr) and autumn (IQR = 8 Oct-5 Nov) migration seasons, 2010-2022.…”

Section: Data Sources and Processingmentioning

confidence: 99%

Flexible migration and habitat use strategies of an endangered waterbird during hydrological drought

Pearse,

Caven,

Baasch

et al. 2024

Conservat Sci and Prac

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Wildlife species confront threats from climate and land use change, exacerbating the influence of extreme climatic events on populations and biodiversity. Migratory waterbirds are especially vulnerable to hydrological drought via reduced availability of surface water habitats. We assessed how whooping cranes (Grus americana) modified habitat use and migration strategies during drought to evaluate their resilience to changing conditions and adaptive capacity. We categorized >8000 night‐roost sites used by 146 cranes from 2010 to 2022 and examined relative use during non‐drought, moderate drought, and extreme drought conditions. We found cultivated and uncultivated palustrine and lacustrine wetlands were generally used less during droughts than non‐drought conditions. Conversely, impounded palustrine and lacustrine systems and rivers served more frequently as drought refugia (i.e., used more during drought than non‐drought conditions). Night roosts occurred primarily on private lands (86% overall); public land use decreased with latitude and increased with drought severity, with greatest use (56%) occurring during severe autumn drought in the southern Great Plains. Quantifying use of identified critical habitats in the United States indicated that Cheyenne Bottoms State Waterfowl Management Area and Quivira National Wildlife Refuge were used less during drought, and the Central Platte River and Salt Plains National Wildlife Refuge received similar use during drought compared to non‐drought conditions. Our findings provide insights into compensatory use of habitats, where impounded surface water may function in a complementary fashion with natural wetlands. Collectively, these and other types of wetlands distributed across the migration corridor provided a reliable network of habitat available across the Great Plains. A diversity of wetlands available during variable environmental conditions would be useful in supporting continued recovery of whooping cranes and likely have benefits for a wide array of migratory birds.

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Movements of Young Wolves in the Northwest Territories of Canada

Cited by 15 publications

References 0 publications

The Wolf (<i>Canis lupus</i>) in Greenland: A Historical Review and Present Status

The Wolf (<i>Canis lupus</i>) in Greenland: A Historical Review and Present Status

Bioaccumulation of Polybrominated Diphenyl Ethers and Alternative Halogenated Flame Retardants in a Vegetation–Caribou–Wolf Food Chain of the Canadian Arctic

Flexible migration and habitat use strategies of an endangered waterbird during hydrological drought

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