Science

This is a GNWT commitment made during the WRRB's Science Technical Session on October 5, 2020 to provide an updated Table 33 from the Technical Report.

This is a written summary of the WRRB's Science Technical Session held on October 5, 2020 via Zoom.

Unlike all other members of the deer family, subpopulations of barren-ground caribou (Rangifer tarandus groenlandicus) are typically sine-cyclic. We used Bayesian Information Criteria (BIC) to rank competing population dynamics models for 11 North American barren-ground caribou subpopulations. Nine of these subpopulations were best described as sine-cyclic with periods ranging from a minimum of 26 years (Bluenose-East and Porcupine) to a maximum of 55 years (Western Arctic); and amplitudes ranging from a minimum of 8 455 (Cape Bathurst) to a maximum of 327 432 (George River).

This is Appendix 11.9 of the Wolf (Dı̀ga) Management Pilot Program Technical Report, which shows the winter range analysis as completed by Caslys.  The methods are described in the Technical Report. This is Part 2 or 2.

This is Appendix 11.9 of the Wolf (Dı̀ga) Management Pilot Program Technical Report, which shows the winter range analysis as completed by Caslys.  The methods are described in the Technical Report.

The aim of this study was to reconstruct population dynamics of barren-ground caribou (Rangifer tarandus groenlandicus) herds from the frequency of trampling scars on tree roots of black spruce (Picea mariana [Mill.] BSP) in the forest-tundra of central Northwest Territories, Canada. Two groups of sites were sampled that roughly corresponded with the migration routes of the Bathurst and Beverly caribou herds. The caribou migrate annually for long distances from the forest to the open tundra in late spring, and return to the forest in the autumn.

Wolves, Canis lupus, routinely live in large packs that include unrelated individuals and mature offspring. Studies show that individual wolves that live in large packs suffer reduced foraging returns. Therefore,
group hunting and group living (sociality) in wolves is generally thought to be favoured by indirect fitness gains accrued through kin-directed altruism. However, we show that kin-directed altruism cannot account

Wolves, Canis lupus, routinely live in large packs that include unrelated individuals and mature offspring. Studies show that individual wolves that live in large packs suffer reduced foraging returns. Therefore,
group hunting and group living (sociality) in wolves is generally thought to be favoured by indirect fitness gains accrued through kin-directed altruism. However, we show that kin-directed altruism cannot account

The number and sites of permanent wound tracts in the carcases of 943 wild culled red deer (Cervus elaphus) were recorded. During the peak period of the red deer rut there was a significant increase in the
number of these tracts in the carcases, which was associated with a decrease from 89 per cent to 71 per cent in the probability of the first permanent wound tract also being the last (the terminal probability).

The effectiveness of aerial wolf survey techniques was evaluated in Game Management Units (W's) 20A and 13. Results indicated that under certain conditions, aerial wolf surveys can provide reasonably accurate estimates of wolf numbers in the types of habitat typical of Southcentral and Interior Alaska. Most important of these conditions are the presence of an adequate amount of fresh snow and sunlight, and the use of pilots and observers possessing the ability to identify, interpret, and follow wolf tracks observed from the air.