Large migratory catibou {Rangifer tarandus) herds in the Arctic tend to be cyclic, and population trends ate mainly driven by changes in forage or weather events, not by predation. We estimated daily kill rate by wolves on adult caribou in winter, then constructed a time and space dependent model to estimate annual wolf (Canis lupus) predation rate (Pannual) on adult Porcupine catibou.
Movement patterns of highly mobile animals can reveal life history strategies and ecological relationships. We hypothesized that wolves (Canis lupus) would display similar movement patterns as their prey, barrenground caribou (Rangifer tarandus groenlandicus), and that movements of the two species would co-vary with season. We tested for interspecific movement dynamics using animal locations from wolves and caribou monitored concurrently from mid-October to June, across the Northwest Territories and Nunavut, Canada.
The Australian Feral Camel Management Project (AFCMP) was initiated in 2009 to manage the growing impacts of feral camels (Camelus dromedarius) in Australia. One of the most important considerations for the project was achieving high standards of animal welfare and demonstrating this to stakeholders and the public. The novelty of feral camels as an invasive species meant that relatively little was known about the animal welfare aspects of the available management techniques.
Animal welfare is increasingly important in the understanding of how human activity affects wildlife, but the conservation community is still grappling with meaningful terminology when communicating this aspect of their work. One example is the use of the terms “humane” and “inhumane.” These terms are used in scientific contexts, but they also have legal and social definitions.
In 1996, the first cows in the Bathurst herd of barren-ground caribou were satellite collared. Subsequently, the program was maintained by using between five and 21 collared cows transmitting locations between 1996 and 2005. The purpose of this report is to compile information about the collaring program and the chronology of collaring. The report is an update of a 2001 summary and it is meant to be an illustrative not exhaustive review of the analyses.
This updated guide includes information for harvesters on the 2019/20 North Slave Wolf Harvest Incentive Area and associated increased incentives for wolf harvesting in the North Slave Region.
This report shares information on the collaborative actions taken over the past year to support barren-ground caribou recovery in the North Slave Region, including results and next steps, focusing specifically on satellite collaring, results from the enhanced wolf harvest incentive program, and an overview of the 2019 fire season.
We evaluated the accuracy and precision of tooth wear for aging gray wolves (Canis lupus) from Alaska, Minnesota, and Ontario based on 47 known-age or known-minimum-age skuIIs. Estimates of age using
tooth wear and a commercial cementum annuli-aging service were useful for wolves up to 14 years old. The precision of estimates from cementum annuli was greater than estimates from tooth wear, but tooth wear
This manual provides guidance on how and when to conduct Intensive Aerial Wolf Survey and Minimum Wolf Count surveys.
During September 1980-December 1986, 81 radio-collared wolves (Canis lupus) were monitored in and near the 839-km2839-km2 Bearville Study Area (BSA) in north-central Minnesota. Each year winter-territory size averaged 78−153 km278−153 km2; no territories had road densities >0.72 km/km2>0.72 km/km2. From zero to 30% of radio-marked pup, yearling, or adult wolves left their territories each month. Pups left natal packs during January-March and older wolves left frequently during September-April.