Woodland caribou scientific review to identify critical habitat: chapter 24

Appendix 6.9 (continued)

Estimates of Numbers and Trends for the Boreal Population of Woodland Caribou Provided By Jurisdictions

map # Local Population or Unit of analysis Year of
Census

Extent of Survey

Coverage

Local
Population
Size
Estimate
Confidence
Limits
Current
Local
Population Trend

Manitoba

Data reported:

Year of census (except for Owl Flinstone) and extent of survey coverage were not reported. Trend data is based on local population estimates carried out in the 70's and 80's and in recent years (2007 for Owl Flinstone), that reported similar estimates.

33 MB Kississing N/A
(not available)
N/A 50-75 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
34 MB Naosap N/A N/A 100-200 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
35 MB Reed N/A N/A 100-150 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
39 MB William Lake N/A N/A 25-40 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
37 MB Wapisu N/A N/A 100-125 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
36 MB The Bog N/A N/A 50-75 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
38 MB Wabowden N/A N/A 200-225 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
40 MB North Interlake N/A N/A 50-75 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
41 MB Atikaki-Berens N/A N/A 300-500 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
42 MB Owl Flintstone 2007 N/A 71-85 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts
43 Manitoba (Remainder of boreal caribou in MB) N/A N/A 775-1585 based on professional judgement and periodic local population counts Stable based on professional judgement and periodic local population counts

 

LP map

#

Local Population or
Unit of analysis
Year of Census Extent of Survey
Coverage
Local
Population
Size
Estimate
Confidence Limits

Current Local

Population Trend

Ontario
44 ON North East Superior
(includes Pukaskwa,
Gargantua and Pic
Islands )

N/A

(not available)

N/A 42 estimate is based on compilation of expert opinions and varied survey techniques across the province Decreasing based on expert opinion
45 ON Michipicoten N/A N/A 200 estimate is based on compilation of expert opinions and varied survey techniques across the province Increasing based on expert opinion
46 ON Slate Islands N/A N/A 250 estimate is based on compilation of expert opinions and varied survey techniques across the province unknown
47 Ontario (remainder of
boreal caribou in
Ontario)
1996
(questionnaire
survey)
Incomplete 5000 estimate is based on compilation of expert opinions and varied survey techniques across the province unknown

 

LP map

#

Local Population or
Unit of analysis
Year of
Census
Extent of Survey
Coverage
Local
Population
Size
Estimate
Confidence Limits
Current Local
Population Trend
Quebec
48 QC Val d’Or

N/A

(not available)

Complete 30 Local population size estimate based on professional judgement and available field data Declining based on professional judgement and available field data
49 QC Charlevoix 1998 Complete 75 estimate based on professional judgement and available field data Stable based on professional judgement and available field data
50 QC Pipmuacan N/A N/A 134 Local population size estimate based on professional judgement and available field data Stable based on professional judgement and available field data
51 QC Manouane N/A N/A 358 Local population size estimate based on professional judgement and available field data Stable based on professional judgement and available field data
52 QC Manicouagan N/A N/A 181 Local population size estimate based on professional judgement and available field data Increasing based on professional judgement and available field data
53 Quebec (Remainder of
boreal caribou in QC)
Incomplete Incomplete 6000-12 000 Local population size estimate based on professional judgement and available inventory data for the southern part of the range extent Suspected stable Supported by Quebec’s Comité de rétablissement based on surveyed areas and data confirming that the range extent has not changed.

 

LP map

#

Local Population or

Unit of analysis

Year of

Census

Extent of Survey

Coverage

Local

Population

Size

Estimate

Confidence Limits

Current Local

Population Trend

Newfoundland and Labrador

Data reported: No Newfoundland local populations are included in the ‘threatened’ designation. The following local populations occur in Labrador, not Newfoundland and there fore the abbreviation “LAB” has been used at the beginning of the local population’s name. Lac Joseph - surveyed in 2000. Full Range (38 00 km2), using a mark-recapture method, Lincoln-peterson/joint hypergeometric maximum liklihood estimator. We have conducted late-winter classifications (March, best indicator of recruitment as calves are 9.5 months old) every year since 2000. Percent calves has ranged between 15 and 20% over that time period, and sex ratios of males/females indicate there are approximnately 50 adult males per 100 females (or about 33% males). Between 1999 and 2006 adult survival ranged between 0.788 to 0.913 with a mean value of .852 in this herd, and mean calf survival over the same period is 0.4. Collectively, these suggest that this herd is either stable or slightly declining. Calf recruitment is good, but adult female sruvival could be better.

Red Wine Mountain: The survey in 2001 covered the full range of this herd, or 29 900 km2. The estimator used was also a maximum liklihood estimator (markrecapture techique). The minimum count (number of unique animals observed) was 67, and revised to 87 in 2003 based on a partial sruvey of animals associated in groups with radio-collared females in 2003. Calf recruitment is similar to LJ, as is adult female survival. However, survival rates need to be adjusted to account for losses of adult animals due to illegal hunting.

Mealy Mountain: Survey in 2005 covered an area of 62 000 km2 (full range). Type was a density-distribution survey (after Gasaway 1986). Survey repeated methods/extent of 2002 census and estimates of population size do not differ significantly (statistically speaking), which suggests that teh population is stable. This herd declined sharply from 2600 to 284 between 1958 and 1975, and has recovered to numbers in excess of 2000 since 2002. Calf recruitment in 2005 was 16%, and adult female survival averaged 89% between 2002 and 2006. The current rate of grwoth in this herd appears to be 0. However, observed parturition, recruitment, and survivorship schedules suggest this herd has the potential to increase. It is possible that any gains in recruitment are being offset by enhanced mortality of adult (uncollared) animals.

54 LAB Lac Joseph 2000 Complete 1101 756-1933 (α= 0.10) Unknown
55

LAB Red Wine

Mountain

2001 Complete 97 72-189 (α  = 0.10) Declining based on professional judgement and available field data; declined from over 800 animals in 1997 to less than 100, and a corresponding change in range size/use has been documented
56 LAB Mealy Mountain 2005 Complete (high density offshore island not included ~ 300 caribou) 2106 765-3447 (α= 0.10) Stable based on professional judgement and available field data
57

Labrador (remainder of

boreal caribou in

Labrador )

N/A Incomplete Unknown N/A Unknown
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