Cougar status in a human dominated landscape

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Presentation transcript:

Cougar status in a human dominated landscape New Mexico Cougar status in a human dominated landscape

Basics Cougar Season: Oct. 1- Mar. 31 Year around on private lands and BHS areas Bag is 1 adult, 2 on BHS areas, and special mgmt. areas Avg. harvest is +/- 200 animals Avg. harvest increases with time, non-resident harvest increases with time Hound use is allowed and accounts for 90% of harvest Long term avg. of 40% female in harvest

Total Harvest

Management History 1867: $5.00 bounty 1923-70: Bounty suspended, cougar unprotected. 1971: Protected, hunting in SW Only, bag 1 1972-1978: Seasons increasingly liberal 1979-83: 11 month season, bag 2. 1984: 3 month season, bag 1. 1985-99: 4 month season, bag 1 2001-2002: 6 month season, year around season in BHS areas, bag 1 2002-2007: Year long in BHS areas, bag 2, year around season on private property 2007-… : Dual harvest limit, sport and total sustainable mortality, population model and management driven

Management Concerns Total mortality Sustainable mortality (depredations, BHS removals, roadkill, private land harvest, preventative control, etc.) Sport harvest (private land harvest not included in sport harvest) Management objectives by region (BHS, wild ungulate protection, livestock depredation issues, etc.) Female harvest, particularly older females

How to Fix it? Create a new habitat model Try and include all variables Do the math and see what you get Does it make sense? If it makes sense try to apply it for some period of time And you get…

Model Habitat Components Super Core = > 2200 k² w/good prey density in large patches w/low road density (sources) Core = 2200-1000 k² patches w/low road density (sources and dispersal) Minimum patch = 100-1000 k² patches (dispersal and minimal sources) Dispersal = 10-100 k² patches (dispersal only)

Faults with Model Based on density estimates Based on assumptions of prey usage (density estimates) Based on assumptions of how much habitat a given cat uses (density estimates) Based on what a cat would do given the choice of what to do if it does what we assume it would do if we were it…

Current Research & Needs Female removal = no resident males Habitat use and connectivity Genetic linkages Prey switching and/or subsidized predation Source/sink dynamics ($, grad student, ??) And yet again, how do you count freakin’ lions?