Jake Ivan Colorado Parks amp Wildlife 4 million acres CPW Bark BeetleWildlife Research 20132014 Jake Ivan CPW Spruce BeetleHareSquirrel Research Phase II Winter 20162017 Jake Ivan ID: 816400
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Slide1
Impacts of Bark Beetle Outbreaks on Lynx & Hares
Jake Ivan, Colorado
Parks & Wildlife
Slide2
Slide34 million acres
Slide4CPW Bark Beetle–Wildlife Research: (2013-2014) – Jake Ivan
CPW Spruce Beetle–Hare-Squirrel Research: Phase II (Winter 2016-2017) – Jake Ivan
USFS Lynx Response to Spruce Beetles (2014-present) – John Squires
Current Research
Slide5CPW Bark Beetle–Wildlife Research: (2013-2014) – Jake Ivan
CPW Spruce Beetle–Hare-Squirrel Research: Phase II (Winter 2016-2017) – Jake Ivan
USFS Lynx Response to Spruce Beetles (2014-present) – John Squires
Current Research
Slide6Assess impacts of beetle outbreaks on a suite of wildlife species inhabiting the subalpine zone in Colorado
Make inference to
both spruce/fir and lodgepole pine systems statewide
Metric: Occupancy (use)
CPW Bark Beetle-Wildlife
Objectives:
Slide7Spatially balanced,
random sample
150 Lodgepole/mix 150 Spruce/fir
Slide8Deployed June - July
Retrieved 4 weeks later
~4 m
~0.5 m
Peanut Butter (1 tbsp)
Rabbit Lure (1 tsp)
Camera
Camera Station
Slide9Snowshoe Hare
Slide10Red Squirrel
Slide11Elk
Slide12CPW Bark Beetle–Wildlife Research: (2013-2014) – Jake Ivan
CPW Spruce Beetle–Hare-Squirrel Research: Phase II (Winter 2016-2017) – Jake Ivan
USFS Lynx Response to Spruce Beetles (2014-present) – John Squires
Current Research
Slide13Determine how hare and squirrel densities change through time after spruce beetles impact an area.
Determine relationship between hare density and subalpine fir regeneration.
Determine the relationship between snowshoe hare density and pellet counts conducted in the same area.
USFS Lynx Response
Objectives:
Slide14Slide15Snowshoe Hare
Density (hares/ha)
Slide16CPW Bark Beetle–Wildlife Research: (2013-2014) – Jake Ivan
CPW Spruce Beetle–Hare-Squirrel Research: Phase II (Winter 2016-2017) – Jake Ivan
USFS Lynx Response to Spruce Beetles (2014-present) – John Squires
Current Research
Slide17Determine if lynx exhibit seasonal changes in resource use of insect-impacted forests
Identify areas outside high-quality lynx habitat in that can accommodate salvage
Determine how insect-impacted forests affect relative patterns of snowshoe hare abundance
USFS Lynx Response
Objectives:
Slide18USFS Research
Slide19USFS Research
2 dens,
2 kittens each in 2015
1 den, 2 kittens in 2016
Slide20Questions?