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Calf mortality and population growth in the Delta caribou herd after wolf control

Dates

Year
2004

Citation

Valkenburg, Patrick, McNay, Mark E., and Dale, Bruce W., 2004, Calf mortality and population growth in the Delta caribou herd after wolf control: Wildlife Society Bulletin, v. 32, no. 3, p. 746-756.

Summary

A program to control wolves (Canis lupus) in interior Alaska in 1993 and 1994 did not result in expected increases in calf survival in the Delta caribou (Rangifer tarandus) herd (DCH). Therefore, the Alaska Department of Fish and Game conducted a study to determine causes of calf mortality during 1995-1997 and monitored recruitment, mortality, and population size annually in the DCH for 6 years after wolf control ended. Despite removal of 60-62% of the autumn 1993 wolf population, wolves still killed 25% of 166 radiocollared calves between birth in mid- to late May and 30 September during 1995-1997. Although autumn calf:cow ratios in the DCH increased after wolf control, similar increases in calf:cow ratios occurred in the adjacent [...]

Contacts

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Provenance

Data source
File Processing
File Process
Type
End Note
Reference Item
3397 record import test
Reference File
NWBLCC-20160406.xml

Additional Information

Citation Extension

journalWildlife Society Bulletin
parts
typeNotes
value8413
typePages
value746-756
typeVolume
value32
typeNumber
value3
citationTypeJournal Article

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