Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem
Thesis (M.S.) University of Alaska Fairbanks, 1993 Winter wolf (Canis lupus) predation and functional response in wolf - caribou (Rangifer tarandus) dynamics were investigated in a multiple ungulate prey ecosystem in Gates of the Arctic National Park, Alaska. Prey selection, prey availability, prey...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/8505 2023-05-15T13:13:14+02:00 Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem Dale, Bruce Williams Bowyer, R. Terry 1993 http://hdl.handle.net/11122/8505 unknown http://hdl.handle.net/11122/8505 Ecology Forestry Thesis ms 1993 ftunivalaska 2023-02-23T21:37:04Z Thesis (M.S.) University of Alaska Fairbanks, 1993 Winter wolf (Canis lupus) predation and functional response in wolf - caribou (Rangifer tarandus) dynamics were investigated in a multiple ungulate prey ecosystem in Gates of the Arctic National Park, Alaska. Prey selection, prey availability, prey switching, kill rates, and food availability for 4 wolf packs were estimated in March 1989, March 1990, and November 1990. Estimates for these study periods reflected near record, average, and early winter snow conditions, respectively. Wolves killed predominately caribou even if moose (Alces alces) or Dall sheep (Ovis dalli) were more abundant. Prey selection varied with study period; however, per wolf kill rates and food availability did not. Length of intervals between kills was correlated with pack size and the biomass of the previous kill. Kill rates indicated a destabilizing Type II functional response. Modeling with a linear numerical response revealed wolf predation to be an increasingly important limiting factor at low caribou densities. However, little potential for regulation of caribou by wolves was observed. Thesis Alces alces Arctic Canis lupus Moose Rangifer tarandus Alaska University of Alaska: ScholarWorks@UA Arctic Fairbanks |
institution |
Open Polar |
collection |
University of Alaska: ScholarWorks@UA |
op_collection_id |
ftunivalaska |
language |
unknown |
topic |
Ecology Forestry |
spellingShingle |
Ecology Forestry Dale, Bruce Williams Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem |
topic_facet |
Ecology Forestry |
description |
Thesis (M.S.) University of Alaska Fairbanks, 1993 Winter wolf (Canis lupus) predation and functional response in wolf - caribou (Rangifer tarandus) dynamics were investigated in a multiple ungulate prey ecosystem in Gates of the Arctic National Park, Alaska. Prey selection, prey availability, prey switching, kill rates, and food availability for 4 wolf packs were estimated in March 1989, March 1990, and November 1990. Estimates for these study periods reflected near record, average, and early winter snow conditions, respectively. Wolves killed predominately caribou even if moose (Alces alces) or Dall sheep (Ovis dalli) were more abundant. Prey selection varied with study period; however, per wolf kill rates and food availability did not. Length of intervals between kills was correlated with pack size and the biomass of the previous kill. Kill rates indicated a destabilizing Type II functional response. Modeling with a linear numerical response revealed wolf predation to be an increasingly important limiting factor at low caribou densities. However, little potential for regulation of caribou by wolves was observed. |
author2 |
Bowyer, R. Terry |
format |
Thesis |
author |
Dale, Bruce Williams |
author_facet |
Dale, Bruce Williams |
author_sort |
Dale, Bruce Williams |
title |
Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem |
title_short |
Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem |
title_full |
Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem |
title_fullStr |
Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem |
title_full_unstemmed |
Wolf-Caribou Relationships In A Multiple Ungulate Prey Ecosystem |
title_sort |
wolf-caribou relationships in a multiple ungulate prey ecosystem |
publishDate |
1993 |
url |
http://hdl.handle.net/11122/8505 |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Alces alces Arctic Canis lupus Moose Rangifer tarandus Alaska |
genre_facet |
Alces alces Arctic Canis lupus Moose Rangifer tarandus Alaska |
op_relation |
http://hdl.handle.net/11122/8505 |
_version_ |
1766256884670529536 |