habitat selection

Content related to: habitat selection

Natal Habitat Preference Induction in Large Mammals—Like Mother, Like Child?

We used complementary approaches to assess natal habitat preference induction in a marked population of woodland caribou. All approaches compared the behavior of calves in their natal range to their behavior as independent subadults, to explore whether subadults selected habitat attributes like those encountered early in life.

We found that some habitat selection tactics were highly repeatable across life stages. Notably, caribou responses to habitat disturbances were highly repeatable year‐round, meaning that different individuals reacted differently, but consistently, to disturbances. This study highlights the potential role of natal habitat preference induction in shaping individual differences in habitat selection in large mammals and provides valuable knowledge for the management and conservation of a threatened species.

Paper:
https://www.cclmportal.ca/resource/natal-habitat-preference-induction-large-mammals-mother-child

Habitat Selection and Population Trends of the Torngat Mountains Caribou Herd

We fitted 9 Argos and 26 global positioning system (GPS)-collars on 35 adult caribou (25 female, 10 male) from the declining Torngat Mountains caribou herd in northern Quebec-Labrador between 2011 and 2016 to assess seasonal habitat selection at 2 spatial scales, current and future population trends, and interactions with the neighboring Riviere-George migratory caribou herd.

The decline of the Torngat Mountains population was principally attributed to the low survival of adult females (0.72 annual survival rate) owing to subsistence harvest and predation. Demographic models revealed that the growth rate of the population could vary from 0.83 (current) to 0.94 following a decrease in harvest pressure. Using demographic scenarios, we showed that the Torngat Mountains herd could continue to decrease if no management actions were taken to increase adult female survival.

Paper:
https://www.cclmportal.ca/resource/habitat-selection-and-population-trends-torngat-mountains-caribou-herd