Bobcat Season Setting Process NDOW Approach Production Adult Male - PowerPoint PPT Presentation

#19 Bobcat Season Setting Process

NDOW Approach  Production  Adult Male - Adult Female Ratio  Effort - Harvest HOW IT WORKS

Production  Production has greatest single influence on population growth.  Intuitively, populations follow production trends up and down.

What Influences Production? 16.00 14.00 12.00 10.00 Precipitation 8.00 6.00 4.00 2.00 0.00 0 20 40 60 80 100 120 Kittens per 100 females

Adult Male - Adult Female Ratio  This ratio can indicate over-utilization.  Males are more susceptible to capture (larger home range)

Adult Male - Adult Female Ratio  In a healthy population males will be less numerous than females. (higher morality rate)  Male/female harvest ratio approaching 1:1 indicates population is in decline and being over utilized.

Effort - Harvest 4000 3500 3000 Annual Harvest 2500 2000 1500 1000 500 100 120 140 160 180 200 220 240 Harvest Effort

Response to Changing Populations Nevada Bobcat Season Length YEAR Season Dates in Days 2007-08 11/1-2/29 121 2008-09 11/1-2/28 120 2009-10 12/1/-2/19 82 2010-11 12/1-2/20 83 2011-12 11/1-2/29 120 2012-13 11/1-2/28 120 2013-14 11/1-2/28 120 2014-15 12/1-2/21 83 2015-16 12/1-2/21 83 2016-17 11/26-2/28 95

QUESTIONS?