Transcript Objectives of Habitat Improvements
Managing for wildlife on private forests in Washington
Presented as part of the Coached Forest Management Planning course for WSU extension and WA- DNR Presenters:
Jim Bottorff, Stewardship biologist, Washington Dept. of Natural Resources Janean Creighton, Wildlife extension coordinator, Washington State University Extension
Habitat is the “key” to wildlife?
Habitat is only part of the story
Habitat is 1 of 3 keys to wildlife:
Life History Population Structure Habitat & Environment
Wildlife “Management”
Direct: Removal; either relocation or lethal Indirect: Control of resource availability
What do wildlife want?
•Acquisition of resources • Reproduction
Habitat Characteristics Plant succession/Edge Limiting factors: food, water, cover, space Vegetative diversity Stand and landscape scales Level of disturbance
Considerations at the Landscape Scale
0
Horizontal Diversity:
Succession
Time in years 200
Primary succession Secondary Succession After a volcanic eruption After a forest fire
Horizontal diversity Vertical diversity
The thing about succession is….
“Whenever you alter the environment to benefit one species you will impact another.”
Edge Effect
Induced Inherent
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Landscape Fragmentation
Rodents Brown-headed cowbird Elk/deer Red fox
Wildlife responses
increased diversity attracts edge dwelling species Increased predation?
Ravens/crows Cougar Kestrel
Lynx Fisher
Wildlife responses
Decreases in interior forest habitat impacts edge-sensitive species
Boreal owl Northern goshawk Hermit thrush American (Pine) martin
Limiting Factors
Food Cover Water Space
All an animal needs is…
a space of one’s own
-Juvenile dispersal -Seeking mating opportunities -Seasonal movements
How much space does an animal need?
Which patch has a potentially viable population?
Forest management approaches to improve wildlife habitat
General Habitat Requirements for Wildlife
Food and water Areas to breed and rear young Areas to hide and rest Areas to escape adverse weather Areas for travel
Excavators: 16 birds + 0 mammals 16 Species of cavity users: 39 birds + 23 mammals 62 Occupy existing cavities: 30 birds + 23 mammals 53
What do wildlife want?
•Acquisition of resources • Reproduction
What do we want ?
•Continued use of natural resources •Clean water and air •High quality of life
Are they compatible?
Guidelines for landowners
1. Define objectives: Human: harvest value, stand improvement, visual enhancement, fire prevention Wildlife: diversity, game species Wildlife outcome depends on patch size, site productivity, and species present.
Human and wildlife values can be compatible!
2. Evaluate your stand(s) Make a vegetation and wildlife inventory.
Define site productivity, or potential for expected change after treatment.
Identify habitat elements present or possible – i.e food, cover, water.
Appropriate for target species?
3. Put stands into landscape context.
Will target wildlife be able to find, use, and persist at site?
Can you work with adjacent landowners to meet needs of wide-ranging wildlife?
4. Actively manage for structure
Variable-retention thinning to maximize diversity. Snag & defective tree retention or creation critical .
Nest boxes a good short-term cavity dwelling species.
option for some Leave large woody debris, or scattered slash piles. for cover and foraging sites.
Under-planting vegetation for forage, fruit & seed.
Wildlife habitat is messy!!
Good wildlife management is a commitment to long term management…
3 months 5 years 1 year 10 years 50 years