Western Arctic Caribou Herd. Population Information.

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Presentation transcript:

Western Arctic Caribou Herd

Population Information

WAH Census Results:

WAH Calf:Cow Ratio: June (calving), October & Spring (April-May)

Western Arctic Herd: Recruitment vs. Adult Cow Mortality WAH Overview – slide 13

WAH Fall Bull:Cow Ratio:

Harvests

Average Annual WAH Subsistence Harvest * Numbers based on community harvest data; ~14,000 WAH caribou taken annually by people living within the range of the WAH (95-98% of total annual harvest)

Western Arctic Herd Harvests by Visiting Hunters (Resident and Nonresident Hunters Combined) Data from statewide harvest ticket system; average annual harvest all GMUs=617 caribou (SD=118; range= caribou); through WAH Overview – slide 17

Western Arctic Herd: Numbers of Visiting Hunters by Residence Data from statewide harvest ticket system WAH Overview – slide 18

2009 Collaring Project Buckland and Deering participated in the project this year.

Collared 49 caribou: 10 satellite collars for ADF&G (9 bulls & 1 cow) 39 GPS collars for NPS (all cows)

Collected blood from 83 caribou (30 bulls & 53 cows) - Routine disease monitoring - Provided samples to geneticist comparing caribou from Teshekpuk and Western Arctic Herds

Percentage of WAH Caribou Positive for Brucellosis

Percentage of WAH Caribou Handled at Onion Portage during September: Skinny or Very Skinny Body condition evaluated during September

Fall Calf Weights

Males84 (9)91 (20) Females85 (13)91 (16) All calves84 (22)92 (36) Minimum6866 Maximum Cow Skinny84 (3)92 (2) Cow Average84 (14)91 (22) Cow Fat92 (5)93 (12) Average Sept. Calf Weights (lbs) (sample size in parentheses)

Body condition of caribou was generally good at OP We saw no cases of hoof rot as in 2008

Board of Game Meeting Results Proposal to establish Same-Day-Airborne hunting for caribou year round in any portion of Unit 22 with an open season: FAILED Proposal to require all pilots that fly hunters, gear or game off-airport to pass an orientation course before operating in Unit 23: PASSED Four proposals to increase the nonresident caribou bag limit in Unit 23 from 1/yr to 2-5/yr: PASSED proposal to make the nonresident bag limit 2 caribou/yr Proposal to redefine “edible meat” to include meat affected by disease: TABLED until the statewide BOG meeting in January, 2009.

ADF&G Management Activities Calving Surveys June, annually calf production and delineation of calving area Photocensus July every 2-3 years Collaring project September, annually deploy radio collars weigh calves collect blood samples – disease and genetic work collect jaws student involvement Jaw collection just beginning to do this year round; rely on hunter participation age, body condition, size of caribou Spring & Fall range-wide telemetry surveys distribution & movements monitor adult mortality

ADF&G Management Activities (cont.) Fall sex/age composition surveys October-November every other year bull:cow and calf:cow ratios Monitor harvests Community harvest assessments selected communities annually lead by Div. of Subsistence cooperative efforts with local organizations and federal agencies statewide harvest ticket system Recruitment surveys April-May annually estimate calf survival through 1 st winter Satellite collars – monitor distribution & movement ADF&G, NPS, BLM & FWS PTT and GPS collars Health assessment every 2-3 years fall (Onion Portage) & spring (Red Dog?)

Questions? (Summary of herd movements to follow)