Global declines of caribou and reindeer

  title={Global declines of caribou and reindeer},
  author={Liv S. Vors and Mark S. Boyce},
  journal={Global Change Biology},
Caribou and reindeer herds are declining across their circumpolar range, coincident with increasing arctic temperatures and precipitation, and anthropogenic landscape change. Here, we examine the mechanisms by which climate warming and anthropogenic landscape change influence caribou and reindeer population dynamics, namely changes in phenology, spatiotemporal changes in species overlap, and increased frequency of extreme weather events, and demonstrate that many caribou and reindeer herds show… 
Observed and predicted effects of climate change on Arctic caribou and reindeer
The ability of many species to adapt to the shifting environmental conditions associated with climate change will be a key determinant of their persistence in the coming decades. This is a challenge
A century of conservation: The ongoing recovery of Svalbard reindeer
Several caribou and reindeer (Rangifer tarandus) populations have experienced recent population declines, often attributed to anthropogenic stressors such as harvesting, landscape fragmentation, and
Linkages between large-scale climate patterns and the dynamics of Arctic caribou populations
Recent research has linked climate warming to global declines in caribou and reindeer (both Rangifer tarandus) populations. We hypothesize large-scale climate patterns are a contributing factor
Wolf–caribou dynamics within the central Canadian Arctic
The severity of recent declines of barren-ground caribou (Rangifer tarandus groenlandicus) across the central Canadian Arctic has led to harvest restrictions and concerns about population recovery.
Climate influences body condition and synchrony of barren-ground caribou abundance in Northern Canada
It is found that positive intensities of the Arctic Oscillation in the summer were associated with warmer temperatures, improved growing conditions for vegetation, and better body condition of caribou, suggesting that the AO influences barren-groundCaribou population dynamics through effects on summer-range quality, caribous physical condition, and herd productivity.
Tactical departures and strategic arrivals: Divergent effects of climate and weather on caribou spring migrations
. The Arctic has been warming rapidly, affecting ecological processes across the region. Caribou and reindeer ( Rangifer tarandus ) is a keystone Arctic species undergoing declines in many parts of
Widespread declines in woodland caribou (Rangifer tarandus caribou) continue in Alberta
This habitat-based assessment estimated empirical population trend and growth rate (λ) for 13 of Alberta’s 16 remaining woodland caribou populations from 1994 to 2012 using demographic monitoring of adult female survival and calf recruitment using empirical population trends.


Voles, lemmings and caribou - population cycles revisited?
Caribou responses to decadal trends in climate likely accumulate through successive cohorts as changes in body mass which, in turn, leads to changes in lifetime reproductive success.
Limiting factors in caribou population ecology
  • D. Klein
  • Environmental Science, Biology
  • 1991
A diversity of limiting factors affecting caribou and wild reindeer populations is a reflection of the ecologial complexity of the species, a concept that has often been ignored in past efforts to reach management decisions by extrapolation from the limited localized knowledge available on the species.
Dynamics of caribou and wolves in northern British Columbia
An experiment was conducted on one of these areas (with the others as controls) to test the effect of wolf numbers on herd growth, and reduced wolves at the experimental Horseranch population from 10 to 1–4/1000 km2 and these caibou increased.
Antipredator strategies of caribou: dispersion along shorelines
A small herd of 15–31 caribou (Rangifer tarandus) inhabited a shoreline strip of habitat along Lake Superior from 1972 to 1983, consistent with the hypothesis that viable caribouch populations cannot survive on ranges frequented by high numbers of wolves unless there are special habitat features providing escape for cows with young calves.
Changes in landscape composition influence the decline of a threatened woodland caribou population.
It is concluded that apparent competition can cause rapid population declines and even extinction where changes in species composition occur following large scale habitat change.
Influences of large-scale climatic variability on reindeer population dynamics: implications for reindeer husbandry in Norway
There is increasing evidence that the globe is currently warming, with changes being more pronounced in northern latitudes. Understanding the ecological effects of climatic variability is therefore
Ecology of wolves in relation to a migratory Caribou Herd in northwest Alaska
There is a paucity of data concerning wolf (Canis lupus) demography, movement patterns, and predation characteristics in relation to migratory caribou (Rangifer tarandus granti). Consequently, during
Demography of decline of the Red Wine Mountains Caribou Herd
It is hypothesize that wolves may mediate the population dynamics of sed entary woodland caribon when associated with high densities of moose and migratoryCaribon, but that the management implications of such a triad remain unclear.
Factors limiting woodland caribou populations and their interrelationships with wolves and moose in southeastern British Columbia
Caribou (Rangifer tarandus caribou), wolves (Canis lupus), and moose (Alces alces) were radio-collared and monitored in two areas of southeastern British Columbia to determine predator–prey interac...