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 (5 records) Display All

Report	Publish Year	Description	Filename
Summary of the 1994 Post Calving and Rut Survey for the Itcha-Ilgachuz Mountains Cariboo Region	1997	To monitor population trend, sex ration, and calf recruitment within the Icha Ilgachuz Mountains caribou population, two aerial total count surveys were undertaken in 1994.	wsi_5955_rpt_1994PostCalvingRut.pdf (8.2 MB)
Summary of the 1995 Post Calving and Rut Surveys and the 1996 Late Winter Survey for the Itcha, Ilgachuz and Rainbow Mountains, Cariboo Region	1997	The Itcha, Ilgachuz, and Rainbow Mountains caribou population was surveyed aerially three times in an effort to determine population trends, sex ratio, and calf recruitment. The post calving survey completed on June 21 and 22 observed a total of 1466 caribou; 681 cows, 450 calves, 229 bulls, 71 yearling cows and 35 yearling bulls. The observed calf/100 cow ratio was 70/100 in the Itcha-Ilgachuz herd and 31/100 in the Rainbow herd. Yearlings/100 cows were observed at 16/100. Cows with calves were found at higher elevations than cows without calves, with yearling and adult bulls being found at the lowest elevations. The October rut survey on October 18 and 19 observed 438 caribou; 279 cows, 80 calves, 30 medium bulls and 49 mature bulls. The observed calf/100 cow and bull/100 cow ratio in the Itcha-Ilgachuz herd were 40/100 and 23/100, respectively. In the Rainbow herd the observed calf/100 cow ratio was 13/100 and the bull/100 cow ratio was 36/100. The March late winter survey observed 314 caribou; 172 in forest and 142 in alpine habitat. The Itcha-Ilgachuz herd calf percentage was estimated at 21% and the Rainbow calf percentage was assumed to be 11%. The bull/cow and mature bull/medium bull ratios in the Rainbow herd were higher than the Itcha-Ilgachuz herd. The Itcha-Ilgachuz herd appears to be stable, with an adequate calf recruitment but a low bull to cow ratio. Further studies coupled with population modeling will be necessary to confidently produce a long-term caribou strategy as required by the CCLUP (Cariboo-Chilcotin Land Use Plan).	wsi_5955_rpt_1995-1996.pdf (899 KB)
Field Data	Publish Year	Description	Filename
		Point data for the 1994-1995 survey formatted for entry into SPI	wsi_5955_dct_1994-1995.xlsm (265 KB)
Map	Publish Year	Description	Filename
Caribou Survey Flightlines for Itcha Ilgachuz, June 1994	1994	1994 - Itcha Ilgachuz - Post Calving Census Map	wsi_5955_rpt_1994PostCalvingMap.pdf (34 MB)
Caribou Survey Flightlines for Itcha Ilgachuz, June 1995	1995	1995 - Itcha Ilgachuz-Rainbows - Post Calving Census Map	wsi_5955_rpt_1995PostCalvingMap.pdf (39.9 MB)