Project Details

Name:	1967-ongoing - Caribou - Population Assessment - Itcha-Ilgachuz, Rainbows - Cariboo Region
ID:	5955
Coordinator:	Carolyn Shores; Nicola Dodd
Funding Agency:
Region:	Cariboo
Security:	Normal

Surveys (32 records)

Survey Name	Survey Intensity	Inventory Method	Target Taxa (Species Code / Scientific Name / English Name)  * = Primary Focus
2021 - Caribou - Aerial Late Winter Recruitment - Itcha-Ilgachuz	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
1978-1987 - Caribou - Aerial Rut Composition - Itcha-Ilgachuz	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
1994-2001 - Caribou - Aerial Rut Composition - Itcha-Ilgachuz	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
2012 - Caribou - Aerial Post-Calving Population Count & Recruitment-MRR - Itcha-Ilgachuz	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2012-2015 - Caribou - Aerial Late Winter Recruitment - Itcha-Ilgachuz	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
2013 - Caribou - Aerial Rut Composition - Itcha-Ilgachuz	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
2014 - Caribou - Aerial Post-Calving Population Count & Recruitment-MRR - Itcha-Ilgachuz	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2014 - Caribou - Aerial Rut Composition - Itcha-Ilgachuz	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
2016 - Caribou - Aerial Rut Population Count & Composition - Rainbows	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2017 - Caribou - Aerial Post-Calving Population Count & Recruitment - Itcha-Ilgachuz	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2018-2019 - Caribou - Aerial Post-Calving Population Count & Recruitment-MRR - Itcha-Ilgachuz	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2020 - Caribou - Aerial Post-Calving Population Count & Recruitment-MRR - Itcha-Ilgachuz, Rainbows	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2007 - Caribou - Aerial Rut Composition - Itcha-Ilgachuz	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
2007-2008 - Caribou - Aerial Rut Population Count & Composition - Rainbows	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2007-2010 - Caribou - Aerial Post-Calving Population Count & Recruitment - Itcha-Ilgachuz	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2010 - Caribou - Aerial Late Winter Recruitment - Itcha-Ilgachuz	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
1996-2004 - Caribou - Aerial Late Winter Recruitment - Itcha-Ilgachuz, Rainbows	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
1995-2001 - Caribou - Aerial Rut Population Count & Composition - Rainbows	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
1996-2003 - Caribou - Post-Calving Population Count & Recruitment-MRR - Itcha-Ilgachuz, Rainbows	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
1985-1988 - Caribou - Post-Calving Population Count & Recruitment-MRR - Itcha-Ilgachuz, Rainbows	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
1986-1987 - Caribou - Aerial Rut Population Count & Composition - Rainbows	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
1988-1992 - Caribou - Aerial Post-Calving Population Count & Recruitment - Itcha-Ilgachuz	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
1994-1995 - Caribou - Aerial Post-Calving Population Count & Recruitment - Itcha-Ilgachuz, Rainbows	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
1967-1977 - Caribou - Aerial Reconnaissance - Rainbows	Presence/Not detected (possible)		M-RATA / Rangifer tarandus / Caribou*
1973-1975 - Caribou - Ground Reconnaissance - Rainbows	Presence/Not detected (possible)		M-RATA / Rangifer tarandus / Caribou*
1973-1988 - Caribou - Aerial Late Winter Recruitment - Itcha-Ilgachuz, Rainbows	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
1974-1977 - Caribou - Population Review-Expert Knowledge - Itcha-Ilgachuz	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
1978-1984 - Caribou - Aerial Post-Calving Population Count & Recruitment - Itcha-Ilgachuz	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2022 - Caribou - Aerial Late Winter Recruitment - Itcha-Ilgachuz	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
2023 - Caribou - Aerial Late Winter Recruitment - Itcha-Ilgachuz, Rainbows	Relative Abundance		M-RATA / Rangifer tarandus / Caribou*
2023 - Caribou - Aerial Post-Calving Population Count & Recruitment - Itcha-Ilgachuz	Absolute Abundance		M-RATA / Rangifer tarandus / Caribou*
2021 - Caribou - Aerial Post-Calving Population Count & Recruitment - Itcha-Ilgachuz			M-RATA / Rangifer tarandus / Caribou*

Documents (3 records) Display All

Report	Publish Year	Description	Filename
Population Status of the Itcha-Ilgachuz Northern Caribou Herd, 2014-2015	2017	The Itcha-Ilgachuz northern caribou herd was surveyed in June 2014 to assess population trends, sex ratios, and early calf recruitment. A radio-collaring program implemented in 2011 provided a collared sample of both adult female (n=19) and male caribou (n=11) for mark-resight population estimation; at the time of the survey 17 collared cows and 6 collared bulls were within the defined survey area. The 2014 post-calving survey resulted in a survey count of 685 caribou: 399 cows, 226 calves, 46 bulls, 12 yearling, and 2 unsexed adults. This was the lowest caribou count during a post-calving survey since the early 1980s. An additional 266 caribou (106 cows, 53 calves, 99 bulls, and 8 yearlings) were observed post-survey, resulting in a minimum count of 951 caribou. Calves represented 33.0% of the total survey count with 56.6 calves: 100 cows; for the 19 collared cows, a ratio of 61.2 calves: 100 cows was observed. Bull ratio using minimum count data was 28.7 bulls: 100 cows. Survey estimate for adult cows was 753 (535-1319) and adult males was 137 (66-696). The 2014 population estimate for the Itcha-Ilgachuz herd is 1350 caribou. The long-term population trend is stable (1994-2014) with change in population size of -11.1%. Although the 20 year trend suggests stability, this does not accurately represent the variability observed in caribou numbers. The Itcha-Ilgachuz caribou herd experienced population growth in the late 1990s and early 2000s with the population increasing from approximately 1500 animals to 2800 between 1995 and 2003. Since then, numbers have steadily declined and the population appears to be similar in size to that of the early 1990s. Change in estimated population size over the past 10 years has averaged -6.4% per annum, consequently the short term population trend is decreasing (2003-2014) with an overall change in population size of 51.8%. The current trend of surveys done in 2012 and 2014 is down with a change in caribou numbers of -15.6%.	wsi_5955_rpt_2014PostCalving.pdf (938 KB)
Field Data	Publish Year	Description	Filename
		Point data for the 2014 Aerial Post-Calving Population Count & Recruitment-MRR survey formatted for entry into SPI	wsi_5955_dct_2014Calving.xlsm (255 KB)
GIS Spatial File	Publish Year	Description	Filename
		Spatial lines of the 2014 Itcha-Ilgachuz Aerial Post-Calving Flightlines	wsi_5955_spl_2014PostC.zip (58 KB)