1. Forestry and Resource Management
Chapter 11
Forestry and Resource Management

2. Section 1: Resource Management
Renewable resources can run out if not used sustainably
only used as rapidly as they can be replaced
Resource managers must balance people’s needs for a resource and an ecosystem’s need for that resource

3. Section 1: Resource Management
Resource management – the managing of resource harvesting so that resources are not depleted
Guided mainly by scientific research but may also be influenced by politics, economics, and social issues

4. Section 1: Resource Management
Renewable resources that must be managed wisely:
Soil
Freshwater
Wild animals
timber

5. Section 1: Resource Management
3 resource management approaches:
Maximum sustainable yield
Ecosystem-based management
Adaptive management

6. Section 1: Resource Management
Maximum sustainable yield (MSY) – aim is to harvest the max amount of a resource without reducing amount of future harvests
Goal is to keep population below carrying capacity, at an intermediate size – grows fastest
Management for 1 population could mean changes for other populations
Section 1: Resource Management

7. Section 1: Resource Management
Ecosystem-Based Management – goal is to harvest resources in ways that minimize impact on the ecosystems and ecological processes that provide the resources
Ecosystems are complex, and all interactions are not understood

8. Section 1: Resource Management
Adaptive Management – involves scientifically testing different management approaches in an area, and then customizing an approach based on the results
Can be time consuming and complicated
Any given management approach will succeed in some places and fail in others

9. Section 2: Forests and Their Resources
Ecological value of forests:
Conservation of biodiversity
Prevention of soil erosion
Purification of air and water
Reduce flooding
Regulate climate through uptake of CO2

10. Section 2: Forests and Their Resources
4 methods of timber harvesting:
Clear-cutting
Seed-tree approach
Shelterwood approach
Selection systems

11. Section 2: Forests and Their Resources
Clear-cutting – all trees in an area are cut at once
Most cost-efficient, but has greatest impact on ecosystem
Causes soil erosion, displacement of entire communities, and may lead to a different climax community, permanently altering ecosystem

12. Section 2: Forests and Their Resources
Seed-tree approach – small numbers of mature and healthy seed-producing trees are left standing so they can reseed the logged area

13. Section 2: Forests and Their Resources
Shelterwood approach – small numbers of mature trees left in place to provide shelter for seedlings as they grow
Less-harmful than clear-cutting

14. Section 2: Forests and Their Resources
Selection systems – only some of the trees are cut at once
More expensive than clear-cutting and more dangerous
Less harmful to ecosystems