Riparian Forestry

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Information about Riparian Forestry

Published on October 24, 2007

Author: esagor

Source: slideshare.net

Description

Presentation developed for a 2004 Woodland Advisor class in Andover MN.

Lakeshore Management and Riparian Forestry Eli Sagor Regional Extension Educator Woodland Advisor Program

Outline Riparian forest functions Tradeoffs in riparian forest management Forest management for water quality (case study) Minnesota’s Voluntary Forest Management Guidelines Q&A

Riparian forest functions

Tradeoffs in riparian forest management

Forest management for water quality (case study)

Minnesota’s Voluntary Forest Management Guidelines

Q&A

Riparian Area: Definition The area of land and water forming a transition from aquatic to terrestrial ecosystems along streams, lakes and open water wetlands. (From MFRC Guidelines, 1999)

The area of land and water forming a transition from aquatic to terrestrial ecosystems along streams, lakes and open water wetlands.

(From MFRC Guidelines, 1999)

Riparian Forest Functions Filtering surface runoff Sediment: Roots slow water flow, draw water into soil, filter sediment Pollution: Swamps and bogs filter chemical and biological contaminants

Filtering surface runoff

Sediment: Roots slow water flow, draw water into soil, filter sediment

Pollution: Swamps and bogs filter chemical and biological contaminants

Riparian Forest Functions Mitigating peak flows Roots slow water flow Canopy slows rate of snow melt Plants use water, reducing amount reaching stream

Mitigating peak flows

Roots slow water flow

Canopy slows rate of snow melt

Plants use water, reducing amount reaching stream

Riparian Forest Functions Regulating water temperature Shading by forest canopy maintains cool temperatures necessary for many fish species

Regulating water temperature

Shading by forest canopy maintains cool temperatures necessary for many fish species

Riparian Forest Functions Contribution of organic matter Large woody debris (logs) Critical habitat elements: plunge pools, backwaters, eddies, debris dams and individual logs Coarse particulate organic matter (leaves) Energy

Contribution of organic matter

Large woody debris (logs)

Critical habitat elements: plunge pools, backwaters, eddies, debris dams and individual logs

Coarse particulate organic matter (leaves)

Energy

Riparian Forest Functions: BREAKDOWNS Filtering surface runoff Lack of filtering  more sediment and pollution reach water body, harming spawning sites and clogging gills.

Filtering surface runoff

Lack of filtering  more sediment and pollution reach water body, harming spawning sites and clogging gills.

Riparian Forest Functions: BREAKDOWNS Mitigating peak flows Lack of flow mitigation  peak flows increase and blowout risk increases. Leads to major sediment inputs and flooding.

Mitigating peak flows

Lack of flow mitigation  peak flows increase and blowout risk increases. Leads to major sediment inputs and flooding.

Riparian Forest Functions: BREAKDOWNS Regulating water temperature Lack of shading  water temps rise and habitat becomes unsuitable for some species

Regulating water temperature

Lack of shading  water temps rise and habitat becomes unsuitable for some species

Riparian Forest Functions: BREAKDOWNS Contribution of organic matter Lack of organic matter  changes in dissolved Oxygen, loss of critical habitat elements mentioned earlier.

Contribution of organic matter

Lack of organic matter  changes in dissolved Oxygen, loss of critical habitat elements mentioned earlier.

What causes the breakdowns in riparian forest function? Loss of riparian forest. Extensive loss of forest cover throughout the watershed, regardless of riparian area condition.

What causes the breakdowns in riparian forest function?

Loss of riparian forest.

Extensive loss of forest cover throughout the watershed, regardless of riparian area condition.

Tradeoffs

Tradeoffs Costs of “good” management in Riparian Areas: Reduced volume available for timber harvest Time to understand guidelines Time to plan Riparian Management Zone Time spent explaining requirements to logger

Costs of “good” management in Riparian Areas:

Reduced volume available for timber harvest

Time to understand guidelines

Time to plan Riparian Management Zone

Time spent explaining requirements to logger

Tradeoffs Two questions: Who benefits from forest practices that preserve water quality? Who pays for it on private land?

Two questions:

Who benefits from forest practices that preserve water quality?

Who pays for it on private land?

Source: Miles et al . 1995

 

Forest Management FOR Water Quality

Forest Management FOR Water Quality What???

What???

Forest Management FOR Water Quality The more diverse a forest is, the less likely that any one disturbance will wipe it all out.

The more diverse a forest is, the less likely that any one disturbance will wipe it all out.

 

Case Study: Quabbin Reservoir Boston’s water supply 25,000 acre reservoir and surrounding 56,000 acres of primarily forested watershed land. One single objective: KEEP BOSTON’S WATER CLEAN AND SAFE

Boston’s water supply

25,000 acre reservoir and surrounding 56,000 acres of primarily forested watershed land.

One single objective: KEEP BOSTON’S WATER CLEAN AND SAFE

Case Study: Quabbin Reservoir Varied terrain with steep hillsides, high ridge tops, beaver ponds, swamps and streams. Mainly mature hardwood (67%) with some conifer (33%).

Varied terrain with steep hillsides, high ridge tops, beaver ponds, swamps and streams.

Mainly mature hardwood (67%) with some conifer (33%).

Case Study: Quabbin Reservoir Local disturbance regime: Hurricanes are the most common severe natural disturbance

Local disturbance regime:

Hurricanes are the most common severe natural disturbance

Case Study: Quabbin Reservoir Management approach: Maintain a forest with several different age classes well represented on each site. Small-group selection, primarily.

Management approach:

Maintain a forest with several different age classes well represented on each site.

Small-group selection, primarily.

From: Smith et al. 1998

 

 

Back to Minnesota… Voluntary Site-Level Forest Management Guidelines

Voluntary Site-Level Forest

Management Guidelines

MFRC Guidelines MFRC Guidelines Management approaches that consider all the values of the forest Financial, ecological, social / cultural Variety of spatial scales

MFRC Guidelines

Management approaches that consider all the values of the forest

Financial, ecological, social / cultural

Variety of spatial scales

MFRC Guidelines How to actually put this into practice on the ground?

How to actually put this into practice on the ground?

Defining Terms Riparian Management Zones vs. Riparian Areas

Riparian Management Zones

vs.

Riparian Areas

MFRC Guidelines The guidelines: Provide specific recommendations for foresters and loggers working in the woods. Reduce the complexity associated with managing for numerous objectives in diverse ecosystems.

The guidelines:

Provide specific recommendations for foresters and loggers working in the woods.

Reduce the complexity associated with managing for numerous objectives in diverse ecosystems.

MFRC Guidelines General Guidelines Forest Roads Timber Harvesting Mechanical Site Prep Pesticide Use Timber Stand Improvement Fire Management Forest Recreation Reforestation Binder contains the following sections :

General Guidelines

Forest Roads

Timber Harvesting

Mechanical Site Prep

Pesticide Use

Timber Stand Improvement

Fire Management

Forest Recreation

Reforestation

 

 

 

 

MFRC Guidelines The guidelines are entirely voluntary.

The guidelines are entirely voluntary.

MFRC Guidelines Example 1: Joe & Verna Pyeweed own 80 acres in Central Minnesota with rolling terrain and a stream running through their property. They own the land for recreational and stewardship purposes, but not really to make money.

Example 1:

Joe & Verna Pyeweed own 80 acres in Central Minnesota with rolling terrain and a stream running through their property. They own the land for recreational and stewardship purposes, but not really to make money.

MFRC Guidelines Example 1, continued: Joe would like to conduct a timber sale to create young aspen stands to promote deer and grouse populations. The best spot to do this is in a relatively low, moist stand near the stream.

Example 1, continued:

Joe would like to conduct a timber sale to create young aspen stands to promote deer and grouse populations. The best spot to do this is in a relatively low, moist stand near the stream.

MFRC Guidelines Example 2: Anders Halverson manages his 240 acres of red pine plantations downstream from Joe and Verna mainly as a source of income. The terrain and soil conditions are similar.

Example 2:

Anders Halverson manages his 240 acres of red pine plantations downstream from Joe and Verna mainly as a source of income. The terrain and soil conditions are similar.

MFRC Guidelines Difference between recommendations for Joe and Anders? Management objectives are different, and the “cost” of a wider RMZ is less for Joe. Guidelines would suggest that Joe retain a wider RMZ. Both would use a wide filter strip.

Difference between recommendations for Joe and Anders?

Management objectives are different, and the “cost” of a wider RMZ is less for Joe.

Guidelines would suggest that Joe retain a wider RMZ.

Both would use a wide filter strip.

 

 

Looking to the Future

Looking to the Future Forest managers and governments are becoming increasingly aware of the importance of clean water. Clinton’s chief of the Forest Service was an aquatic ecologist.

Forest managers and governments are becoming increasingly aware of the importance of clean water.

Clinton’s chief of the Forest Service was an aquatic ecologist.

Looking to the Future More and more eyes will be on forest managers to act as good stewards of the land and water. Forest practices regulations to become less voluntary?

More and more eyes will be on forest managers to act as good stewards of the land and water.

Forest practices regulations to become less voluntary?

Looking to the Future Forest management will become more complex: more variables to weigh and more people watching. This is good! The most creative foresters are the best ones.

Forest management will become more complex: more variables to weigh and more people watching.

This is good! The most creative foresters are the best ones.

Looking to the Future Increased complexity means we need more educational opportunities for foresters and citizens / landowners. This is good too. Landowners need to understand and take responsibility for the impacts of their decisions.

Increased complexity means we need more educational opportunities for foresters and citizens / landowners.

This is good too. Landowners need to understand and take responsibility for the impacts of their decisions.

Questions, or head outside?

Questions, or head outside?

 

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