Boreal woodland caribou
|Boreal woodland caribou|
|The iconic image of the caribou on the reverse side of the Royal Canadian Mint quarter, designed by Emmanuel Hahn, was first used in 1937 and has been in use ever since.|
|Subspecies:||R. t. caribou|
|Rangifer tarandus caribou
|Woodland caribou (boreal)
|Approximate range of boreal woodland caribou. Overlap with other subspecies of caribou is possible for contiguous range. 1. Rangifer tarandus caribou subdivided into ecotypes: woodland (boreal), woodland (migratory), woodland (montane), 2. R. t. Dawsoni extinct 1907, 3. R. t. granti, 4. Barren-ground caribou R. t. groenlandicus, 5. Groenlandicus/Pearyi 6. R. t. pearyi|
The boreal woodland caribou also known as woodland caribou, woodland caribou (boreal group), forest-dwelling caribou, Rangifer tarandus caribou.[Notes 1] Boreal woodland caribou—are mainly but not always—sedentary.[Notes 2] The woodland caribou is the largest of the caribou subspecies and is lighter in colour than the Barren-ground caribou.
The national meta-population of this sedentary boreal ecotype spans the boreal forest from the Northwest Territories to Labrador. They prefer lichen-rich mature forests and mainly live in marshes, bogs, lakes, and river regions.  The historic range of the boreal woodland caribou covered over half of present-day Canada, stretching from Alaska to Newfoundland and Labrador and as far south as New England, Idaho, and Washington. Woodland caribou have disappeared from most of their original southern range. The boreal woodland woodland was designated as threatened in 2002 by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC). Environment Canada reported in 2011 that there were approximately 34,000 boreal caribou in 51 ranges remaining in Canada.(Environment Canada, 2011b). In a joint report by Canadian Parks and Wilderness Society (CPAWS) and the David Suzuki Foundation, on the status of woodland caribou, claim that "the biggest risk to caribou is industrial development, which fragments their habitat and exposes them to greater predation. Scientists consider only 30% (17 of 57) of Canada’s boreal woodland caribou populations to be self-sustaining." "They are extremely sensitive to both natural (such as forest fires) and human disturbance, and to habitat damage and fragmentation brought about by resource exploration, road building, and other human activity. New forest growth following destruction of vegetation provides habitat and food for other ungulates, which in turn attracts more predators, putting pressure on woodland caribou."
Compared to barren-ground caribou or Alaskan caribou, boreal woodland caribou do not form large aggregations and are more dispersed particularly at calving time. Their seasonal movements are not as extensive. Mallory and Hillis explained how, "In North America populations of the woodland caribou subspecies typically form small isolated herds in winter but are relatively sedentary and migrate only short distances (50 - 150 km) during the rest of the year."
is from a 1.6 million year old tooth found in the Yukon Territory; other early records include 45,500-year-old cranial fragment from the Yukon and a 40,600-year-old antler from Quebec (Gordon 2003). The ancestral origins of caribou prior to the last glaciation (Wisconsin), which occurred approximately 80,000 to 10,000 years ago, are not well understood, however, during the last glaciation it is known that caribou were abundant and distributed in non-glaciated refugia both north and south of the Laurentide ice sheet.—Banfield 1961, Martin and Klein 1984 cited in Wilkerson 2010
- 1 Species and subspecies description
- 2 Reproduction
- 3 Taxonomy and current classifications
- 4 Range and population changes
- 5 Newfoundland and Labrador
- 6 Western North America
- 7 Quebec
- 8 Woodland Caribou in the United States
- 9 Habitat loss and degradation
- 10 Technology
- 11 Comparison with other global populations
- 12 See also
- 13 Notes
- 14 Citations
- 15 References
- 16 External links
Species and subspecies description
The reindeer species 'Rangifer tarandus', of which Rangifer tarandus caribou is a subspecies, is a medium-sized ungulate which inhabits boreal, montane, and arctic environments, and exhibits "tremendous variation in ecology, genetics, behaviour and morphology." Most of the subspecies, Rangifer tarandus caribou are now only found in in Canada. A distinctive characteristic of all caribou is large crescent-shaped hooves that change shape with the season and that are adapted to walking in snow-covered and soft ground such as swamps and peat lands, and assist in digging through snow to forage on lichens and other ground vegetation. The subspecies ecotype, boreal woodland caribou, have a shoulder height of approximately 1.0-1.2 m shoulder height and weigh 110–210 kg.
Both male and female boreal caribou have antlers during part of the year, although some females may have only one antler or no antlers at all (Boreal Caribou ATK Reports, 2010-2011). On the males these grow so quickly each year that velvety lumps in March can become a rack measuring more than a metre in length by August. Antlers of boreal caribou are flattened, compact, and relatively dense. Boreal caribou antlers are thicker and broader than those of the barren-ground caribou, and their legs and heads are longer.
The boreal woodland Caribou is well-adapted to cold environments with a compact body covered with a thick and long coat (thicker in winter than in summer). They with a large blunt muzzle, short wide ears, and a small tail. Adults have a brown to dark-brown coat in summer, becoming greyer in winter. Adults have distinctive creamy white neck, mane, shoulder stripe, underbelly, underside of the tail, and patch above each hoof (Banfield, 1974; Boreal Caribou ATK Reports, 2010-2011).
"Females mature at 16 months, males at 18-20 months, but males usually don't breed before three or four years of age due to the hierarchical nature of the herd and competition between males. Their reproduction rate is low. Breeding occurs at the end of September and the beginning of October and the young are born in mid-June," although these dates may be vary based on geographical region. For conservation and herd management purposes, migratory herds are often defined in terms of female natal philopatry or natal homing - the tendency to return to natal calving areas. Female boreal caribou and their newborn calves are more vulnerable to predation than migratory caribou, as they often calve separate from the rest of the herd and remain solitary until mid-winter.
Taxonomy and current classifications
Current classifications of Rangifer tarandus, either with prevailing taxonomy on subspecies, designations based on ecotypes, and natural population groupings, fail to capture "the variability of caribou across their range in Canada" needed for effective species conservation and management. "Across the range of a species, individuals may display considerable morphological, genetic, and behavioural variability reflective of both plasticity and adaptation to local environments." COSEWIC developed Designated Unit (DU) attribution to add to classifications already in use.
The species taxonomic name Rangifer tarandus (reindeer, caribou, caribou, Reindeer) was defined by Carl Linnaeus in 1758. The subspecies taxonomic name, Rangifer tarandus caribou was defined by Gmelin in 1788.
Based on Banfield's often-cited A Revision of the Reindeer and Caribou, Genus Rangifer (1961), R. t. caboti(LabradorCaribou), R. t. osborni (Osborn's Caribou—from British Columbia) and R. t. terraenovae (Newfoundland Caribou) were considered invalid and included in R. t. caribou.
Some recent authorities have considered them all valid, even suggesting that they are quite distinct. In their book entitled Mammal Species of the World, American zoologist Don E. Wilson and DeeAnn Reeder agree with Valerius Geist, specialist on large North American mammals, that this range actually includes several subspecies.[Notes 4]
Geist (2007) argued that the "true woodland caribou, the uniformly dark, small-manned type with the frontally emphasized, flat-beamed antlers", which is "scattered thinly along the southern rim of North American caribou distribution" has been incorrectly classified. He affirms that "true woodland caribou is very rare, in very great difficulties and requires the most urgent of attention."
Mallory and Hillis argued that, "Although the taxonomic designations reflect evolutionary events, they do not appear to reflect current ecological conditions. In numerous instances, populations of the same subspecies have evolved different demographic and behavioural adaptations, while populations from separate subspecies have evolved similar demographic and behavioural patterns... "[U]nderstanding ecotype in relation to existing ecological constraints and releases may be more important than the taxonomic relationships between populations."
Subspecies and ecotypes
The woodland caribou (R.t. Caribou), is one of four extant subspecies of Rangifer tarandus identified by Banfield (1961), an experienced field scientist with the Canadian Wildlife Service.[Notes 5]
Caribou herds are classified by ecotype depending on several behavioural factors - predominant habitat use (northern, tundra, mountain, forest, boreal forest, forest-dwelling), spacing (dispersed or aggregated) and migration (sedentary or migratory). Caribou herds can be classified as a northern mountain woodland ecotype.
In eastern North America caribou are classified into three ecotypes – "the mountain caribou which is found south of the St. Lawrence River, the barren-ground caribou which calves in the tundra, and in between, the forest-dwelling ecotype which lives all year long in the boreal forest. In west-central Alberta there are two ecotypes – boreal and mountain. In Québec there are three ecotypes with specific habitats and behaviour – migratory barren-ground ecotype, the mountain ecotype and the forest-dwelling ecotype (boreal caribou). In British Columbia caribou are classified into three ecotypes – Mountain, Northern, and Boreal. In Ontario caribou are classified into two ecotypes – forest-dwelling woodland caribou and forest-tundra woodland. In Newfoundland/Labrador, Woodland caribou are classified as part of the boreal population of caribou, which is sub-divided into two ecotypes: the migratory forest-tundra and the sedentary forest-dwelling ecotype. In the Northwest Territories, the Canadian Parks and Wilderness Society identified five types of caribou – boreal woodland caribou, northern mountain woodland caribou, barren-ground caribou and Peary caribou and Dolphin-Union. "The Boreal woodland caribou live in the forests east of the Mackenzie Mountains and tend to live in small groups. They prefer to stay within the forest for most of the year and do not migrate."
Range and population changes
The northernmost range of boreal woodland caribou in Canada is in the Mackenzie River Delta area, Northwest Territories. In 2000, in the Northwest Territories, woodland caribou had a very large range and the population was assessed and was not considered to be risk in 2000. The population is identified as NT1 for conservation purposes.
In British Columbia woodland caribou are classified into three ecotypes – mountain, northern, and boreal. The boreal woodland caribou is now only found in "the lowlands of the Boreal Plains and Taiga Plains ecoprovinces of the Alberta Plateau physiographic region, in the northeastern corner." This population was in an area of with a high density of wolves and there was concern that the caribou herd was not self-sustaining. Following a 2006 survey of boreal caribou populations in 2006, they were blue-listed within British Columbia. Density and population of boreal caribou in BC was not well known prior to 2000. The name of the Cariboo district of central British Columbia relates to their once-large numbers there, but they have almost vanished from that area in the last century. There are a number of populations in BC that are currently being monitored. – In 2006 there were approximately 200 to 340 individual boreal caribou in the BC1 Maxhamish DU, north of Fort Nelson.,  BC2 Calendar, The BC3 Snake-Sahtahneh boreal caribou are non-migratory. In BC4 Parker DU, there was a small local population of 20 individuals in 2006.[Notes 7] BC5 Prophet (small local population).
In Alberta, a herd is protected in the Caribou Mountains Wildland Park in Alberta. "The Park contains relatively undisturbed and lichen-rich forests, favoured habitat for woodland caribou. About 80 percent of the range of an important population of woodland caribou is contained within the Park, and about a third of Alberta’s population of this threatened species is dependent on the Park." There are 12 designated units for conservation purposes in Alberta – AB1 Chinchaga (incl. BC portion), AB2 Bistcho, AB3 Yates, AB4 Caribou Mountains, AB5 Little Smoky (small isolated local population at risk of extirpation), AB6 Red Earth, AB7 West Side Athabasca River, AB8 Richardson, AB9 East Side Athabasca River, AB10 Cold Lake, AB11 Nipisi (small local population), AB12 Slave Lake (small local population).
Saskatchewan: SK1 Boreal Shield (This is an area with very low anthropogenic disturbance but very high fire disturbance).
Manitoba: MB1 The Bog (small local population), MB2 Kississing (small local population), MB3 Naosap, MB4 Reed, MB5 North Interlake (small local population), MB6 William Lake (small local population), MB7 Wabowden, MB8 Wapisu, MB9 Manitoba North, MB10 Manitoba South, MB11 Manitoba East, MB12 Atikaki-Berens, MB13 Owl-Flinstone (small local population).
Woodland Caribou in Ontario
In their Annual Report 2006-2007, the Office of the Environmental Commissioner of Ontario argued that, "Woodland caribou represent the "hard-to-perceive, slow-motion crisis" that faces many species at risk." "Woodland caribou are a sensitive indicator of the ecological effects of development in northern Ontario. The success or failure of conservation efforts for this species also may serve as a benchmark to measure the sustainability of policy choices made by the Ontario government."
Since the 1940s the decline of Rangifer tarandus caribou range occupancy in Ontario has been recognized. There are two populations of woodland caribou, the forest-tundra ecotype and the sedentary forest-dwelling ecotype. The boreal woodland caribou population (forest-dwelling), estimated at approximately 3,000, make up approximately one-quarter of Ontario’s woodland caribou, are was designated as threatened in 2000 (likely to become endangered if limiting factors are not reversed) by the Federal Committee on the Status of Endangered Wildlife in Canada and by the Province of Ontario. The migratory forest-tundra woodland caribou, numbering about 20,000 in 2007  is found in northern Ontario, on the coastal plains south of Hudson Bay was not considered to be endangered.
In 1985, the Ontario government established the Slate Islands in Lake Superior as a natural environment provincial park. The islands are notable for having Ontario's largest herd of woodland caribou. Slate Island, where there were no wolves or other predators, had the highest density of boreal caribou in the world with a population peaking at 660. Because of a food shortage in 1990, their numbers were reduced to less than 100.
There are six designated units in Ontario – ON1 Sydney, ON2 Berens, ON3 Churchill, ON4 Brightsand, ON5 Nipigon, ON6 Coastal (small isolated local population),[Notes 8] ON7 Pagwachuan, ON8 Kesagami, ON9 Far North (very large range).
Québec: QC1 Val d'Or (small isolated local population), QC2 Charlevoix (small isolated local population), QC3 Pipmuacan, QC4 Manouane, QC5 Manicouagan, QC6 Quebec (very large range).
Newfoundland: NL1 Lac Joseph, NL2 Red Wine Mountain (small local population), NL3 Mealy Mountain.
Newfoundland and Labrador
In 1961 in Banfield's often-cited A Revision of the Reindeer and Caribou, Genus Rangifer (1961), R. t. caboti(LabradorCaribou) and R. t. terraenovae (Newfoundland Caribou) were considered invalid and included in R. t. caribou.
In insular Newfoundland, in Gros Morne National Park, for example, Woodland caribou R.t. caribou are "are usually seen on the Long Range traverse and sometimes on Gros Morne Mountain. In recent winters, they have been seen in large numbers on the coastal lowlands north of Berry Hill and St. Paul's." An adult male R.t. caribou can weigh up to 270 kilograms (600 lb), and females are about a quarter smaller. The caribou is much smaller than moose.
According to Bergerud (1974) in the 1800s and early 1900s, (Rangifer tarandus) caribou numbers declined following settlement. [Notes 9] The decline continued along the southern edge of woodland caribou distribution throughout the 1960s, 70s and 80s with the direct loss of habitat to logging, mines and dams. The increase of roads intersecting the led to increased hunting and poaching and increased predator/prey densities.
According to the Canadian Wildlife Federation in Canada, "Despite its vast range, the boreal population of woodland caribou [boreal ecotype of forest-dwelling woodland caribou] has been listed as threatened by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) since 2002 and endangered in British Columbia. One of the main reasons numbers are dropping is that fewer calves are surviving their first year of life. The main cause is predation. More calves are being preyed on by wolves and black bears than ever before."
Western North America
In 1991 Edmonds identified 44 herds of Woodland Caribou in seven jurisdictions in western North America (west of Ontario/Manitoba border) with an estimated total maximum population of 61,090 caribou. She noted that by 1991 caribou was a threatened species in Alberta and an endangered species in Washington/Idaho.
Subspecies and ecotypes
All Caribou of the province of Québec were assigned to the same sub-species (R. t. caribou) in 1961. Banfield classified the caribou of Ungava as woodland caribou Rangifer tarandus caribou based on skull measurements. But there are three ecotypes with specific habitats and behaviour. Bergerud et al. compared the sedentary ecotype caribou (Bergerud 1988b) in southern Ungava (south of 55°N) to those farther north, the migratory ecotype Leaf River Caribou Herd (LRH) and the George River Caribou Herd (GRCH). In southern Ungava caribou females disperse from other females to avoid predators (Bergerud and Page 1987). See migratory woodland caribou
The boreal woodland caribou (forest-dwelling) ecotype is found discontinuously, mainly between the 49th and 55th parallels. In 2003 its distribution covered 235 000 km2,mainly east of the 72nd meridian. This sedentary ecotype is found almost exclusively in the boreal forest, principally in areas with long forest fire cycles. Its abundance has also decreased over the years. Large forest-dwelling populations still persisted during the 1950s and 1960s, but they apparently disappeared. The current abundance is not known precisely, but based on density estimates and considering the current distribution, it probably does not exceed 3000 individuals. Current data are insufficient to identify precisely the causes of the population decline, although hunting seems to be an important proximal cause." 
Although they are included as woodland caribou, the George River and Leaf River caribou herds are migratory, covering thousands of miles each year to and from their birthing grounds. They travel north and south of their birthing grounds near these rivers crossing from Nunavik in the Ungava region to Quebec and insular Newfoundland.
The George River caribou herd (GRCH)
The George River caribou herd (GRCH) is a migratory forest-tundra ecotype of the boreal woodland caribou. "Since the mid-1990s, the George River Herd has declined sharply. A recent survey confirms a continuing decline of the George River migratory caribou herd population over the past few years; currently (2012), it is estimated to be about 27,600 animals, down from 385,000 in 2001 and 74,131 in 2010."
The Leaf River caribou herd
The Leaf River caribou herd (LRCH), is a migratory forest-tundra ecotype of the boreal woodland caribou. The Leaf Herd in the west, near the coast of Hudson Bay, increased from 270 000 individuals in 1991 to 628 000 in 2001. According to the Quebec's Natural Resources and Wildlife survey, the Leaf River Herd (LRH) (Rivière-aux-Feuilles) had decreased to 430 000 caribou in 2011. According to an international study on caribou populations, the Leaf River herd and other herds that migrate from Nunavik, Quebec and insular Newfoundland, could be threatened with extinction by 2080.
Woodland Caribou in the United States
"At the time of European settlement of North America, caribou (Rangifer tarandus) were found over most of Canada and Alaska. Woodland caribou (R. t. caribou) extended south to 42 degrees N, and were found in parts of New England, New York, the Upper Great Lakes states, Montana, Idaho, and Washington. By the 1970s, woodland caribou had been eliminated from the eastern United States and most of eastern Canada, extending only to approximately 48 degrees N. The decline extended to the west as well, and by 1980 only 25-30 animals persisted in north Idaho and northeast Washington; caribou had been extirpated elsewhere in the contiguous 48 states. This population was listed as endangered in 1984 under the Endangered Species Act (ESA). At that time, the entire woodland caribou population in the Selkirks consisted of one herd of 20-25 animals that occurred in extreme northeast Washington, northern Idaho, and the Stagleap Park area of British Columbia (B.C.)."
In the United States the woodland caribou is one of the most critically endangered mammals, with only a few woodland caribou found south of the Canada border each year. In the US there is only one naturally occurring herd of woodland caribou in extreme northern Idaho, eastern Washington, and British Columbia, Canada, of about 40 animals. There is, however, a concerted effort on the part of the North Central Caribou Corporation and the Boundary Waters Canoe Area Wilderness to reintroduce a herd of around 75 animals from the Slate Islands in Lake Superior to northern Minnesota. However, the high incidence of whitetail deer and wolves in the region will likely prove quite problematic.
Habitat loss and degradation
Woodland caribou were once found throughout much of Ontario's boreal forest; at the turn of the 20th century they ranged as far south as northern Wisconsin. The last permanent residents were killed in Minnesota in 1962. Despite periodic sightings of individuals south of the border the caribou range has receded approximately 34 km/decade, the manifestation of widespread range collapse and population decline. Although woodland caribou have been protected from sport hunting since 1929, the Committee on the Status of Endangered Wildlife in Canada listed forest-dwelling caribou in Canada as threatened (likely to become endangered if limiting factors are not reversed) in 2000. Woodland caribou may be extinct before the year 2100 if the rate of range loss continues. "Destruction of habitat, hunting and disturbances by humans during the construction of roads and pipelines are all factors that have contributed to the decline of Woodland Caribou."
BLCN lands cover an area the size of Switzerland and overlap the oil sands. The territory now yields 560,000 barrels of oil a day. Industry wants to raise that to 1.6 million. BLCN land already has 35,000 oil and gas sites, 21,700 kilometres of seismic lines, 4,028 kilometres of pipelines and 948 kilometres of road. Traditional territory has been carved into a patchwork quilt, with wild land reduced to small pieces between roads, pipes and wires, threatening animals like woodland caribou that can't adapt to these intrusions.—David Suzuki 28 August 2013
Cumulative effects of development
When Environment Canada (EC) introduced the new South Athabaska Sub-regional Strategic Environmental Assessment, it was partly in response to the cumulative effect of oil sands development on the habitat loss of the boreal caribou also known as Woodland Caribou(boreal), Rangifer tarandus caribou. The caribou is iconic and the caribou design on the Royal Canadian Mint quarter was first used in 1937. Ecosystem degradation of the "stands of old growth forest", for example, are caused by "mining, logging, oil and gas exploration and even excessive motorized recreation" which result in "a fragmented and altered landscape often leading to increased populations of deer, moose, elk, and their predators. Caribou require large areas of land with low densities of predators."The cumulative effect of oil sands development, was one of the topics discussed. It was noted that,
"The science is clear - all Alberta's boreal caribou are at elevated risk of becoming extirpated (locally extinct), including those in the oil sands region."—ER, 2013
In June 2007 a national recovery strategy for boreal caribou was to be posted on the Species at Risk Public Registry
Since the fall of 2010, the Alberta government has been working closely with the federal government, through Major Projects Management Office (MPMO) on system-wide improvements in regulatory activities to align with the Canadian Environmental Assessment Act (CEAA) and to engage Alberta on energy and environment issues.
On 3 February 2013, a joint Canada-Alberta world-class, comprehensive and integrated monitoring system of the oil sands was announced. Through the South Athabaska Sub-regional Strategic Environmental Assessment, the Government of Canada and Alberta will "further align regulatory processes, while addressing cumulative effects by employing an ecosystem-based approach."
"Environment Canada is not only concerned with the environmental impacts of individual oil and gas projects, it is concerned with the cumulative effects of development, especially in the oil sands and urban centers. Impacts are not limited to air emissions. Terrain disturbance, disruption of groundwater regimes, and contamination of surface waters are all concerns, particularly with the accelerated pace of development."—EC, 2012a
By February 2013, Suncor's March report reflects their concerns with the Species at Risk Act (SARA), in particular on the implications of theProposed Recovery Strategy for Woodland Caribou. Suncor reported that,
"A number of statutes, regulations and frameworks are under development or have been issued by various provincial regulators that oversee oil sands development, including the recently announced Joint Canada-Alberta Implementation Plan for Oil Sands Monitoring, and the Lower Athabasca Regional Plan (LARP) that implements a cumulative efforts management regime in the Athabaskca oil sands region. These statutes, regulations and frameworks relate to such issues as tailings management, water use, air emissions and land use. While the financial implications of statutes, regulations and frameworks under development are not yet known, the company is committed to working with the appropriate regulatory bodies as they develop new policies, and to fully complying with all existing and new statutes, regulations and frameworks as they apply to the company’s operations."—Suncor, 2013
Caribou are monitored through a capture and collaring with VHF or Global Positioning System (GPS) collars tracking collars. Satellite tracking Argos system, a satellite-based system collects, processes and disseminates the data from caribou tracking collars, clearly locating exact geographically coordinates. Satellite networks have tracked the migration and territorial movements of caribou. Electronic tags are giving scientists a complete, accurate picture of migration patterns. Using radio transmitters to track one herd of caribou, scientists learned that the herd moves much more than previously thought and they learned that each year the herd returns to about the same place to give birth. Environment Canada uses Landsat satellite imagery, for example, to identify anthropogenic disturbance (human-caused disturbance) to the natural landscape. This includes roads, seismic lines, pipe lines, well sites, and cutblocks that accompany industrial activities such as oil and gas exploration and development and forestry. British Columbia uses telemetry and computer modelling.
Comparison with other global populations
Experts in Finland are also concerned about their R. tarandus subspecies, R. t. fennicus or Finnish forest reindeer, where an increasing, returning wolf population may be partially responsible for slowing the recovery.
- Bergerud 1988, used the general ecotypes migratory and sedentary, based on calving strategies, to distinguish the Holarctic migratory tundra caribou/reindeer which were thriving in 1988 with a population of three million in North America, from the declining population of sedentary caribou in both Eurasia and North America that numbered about 325,000 in 1988 (Bergerud 1988). Since then migratory caribou have also experienced declines in their numbers.
- In their 2012 report entitled "Recovery Strategy for the Woodland Caribou (Rangifer tarandus caribou), Boreal population, in Canada", Environment Canada and SARA refer to the woodland caribou as "boreal caribou". "Woodland Caribou (Rangifer tarandus caribou), Boreal population herein referred to as "boreal caribou", assessed in May 2002 as threatened by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC).
- Caribou was introduced into the French language by Marc Lescarbot in his publication 1610. Silas Tertius Rand included the term Kaleboo in his Mi'kmaq-English dictionary in 1888 (Rand 1888:98).
- The Integrated Taxonomic Information System list Wilson and Geist on their experts panel.
- Rangifer tarandus groenlandicus (barren-ground caribou) which are found mainly in the Canadian territories of Nunavut and the Northwest Territories, along with western Greenland; Rangifer tarandus caribou (boreal woodland caribou or mountain woodland caribou and migratory woodland caribou) —the George River Caribou Herd, for example in the Ungava region of Quebec; Rangifer tarandus pearyi (Peary caribou), the smallest of the species, known as Tuktu in Inuktitut, found in the northern islands of Nunavut and the Northwest Territories; †Queen Charlotte Islands caribou from the Queen Charlotte Islands (extinct since 1910) R. t. dawsoni and woodland caribou R. t. caribou; Rangifer tarandus granti Grant’s caribou, which live in Alaska and the northern Yukon. In Alaska in 2012, the estimated population of the migratory Rangifer tarandus granti totalled 650,000 caribou in the four North Slope herds —Western Arctic Caribou Herd (WAH), Teshekpuk Caribou Herd (TCH), Central Arctic Caribou Herd (CAH), and Porcupine Caribou Herd (PCH). (Mager 2012)
- "The geographic area occupied by a group of boreal caribou that are subject to similar factors affecting their demography and used to satisfy their life history processes (e.g. calving, rutting, wintering) over a defined time frame is referred to as a range (Environment Canada 2012:vi)."
- "Small local populations, particularly those isolated from the core distribution of the national population of boreal caribou, are at greater risk (EC 2012:18)."
- "Small local populations, particularly those isolated from the core distribution of the national population of boreal caribou, are at greater risk."
- Hypotheses for this decline included range destruction (fire and logging destroyed lichen which takes a long time to recover), increased hunting mortality, increased natural predation by wolves and increased movement to marginal habitats with high numbers. Bergerud argued that increased hunting mortality and increased natural predation by wolves contributed more to the decline than range destruction.
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