Compendium of Restoration Techniques

Introduction & Habitat Targets

Introduction

This compendium of habitat restoration techniques provides illustrative and detailed information about construction materials and techniques needed to improve aquatic habitats. It was designed to address the key aquatic and fish management objectives for each major waterfront habitat type.

Habitat Targets

Action targets were developed for each habitat type, based on a thorough understanding of the biological and physical factors that currently limit the potential for healthy aquatic communities.

TARGETS Open Coast Sheltered Embayments Coastal Wetlands Estuaries
Improve emergent vegetation    
Improve submergent vegetation      
Increase high quality riparian vegetation
Reduce Carp biomass      
Increase areas of primary production  
Increase essentail habitats for top-order Piscivores  
Increase essential habitats for cool and cold water species    
Improve forage
Add structural elements to improve near shore habitats  

Compendium of Restoration Techniques

Habitat restoration techniques were developed with these targets in mind. Some are most suited to a specific habitat type whereas others can be more broadly applied to one or more habitat types, as shown in the table below.

Habitat Type Restoration Technique Purpose
Open Coast Boulder Pavement
Boulder Pavement Repaired
Substrate diversity and structural elements
  Surcharged Revetment Substrate diversity and structural elements
  Surcharged Groyne Substrate diversity and structural elements
  Underwater Reefs Underwater structural habitat
Sheltered Embayments Shoreline Vegetation Zones Critical design consideration for shoreline vegetation
  Wetland Shoreline Profile and Lake Ontario Water Levels Critical design elevation for aquatic and riparian vegetation communities
  Underwater Reefs Underwater structural habitat
  Anchored Logs Underwater structural habitat
  Deep Weed Wall Underwater terracing creates primary and secondary drop offs
  Shoreline Shoal Shoreline diversity
  Modified Growth of Submerged Aquatic Vegetation Technique to ameliorate excessive nearshore submerged aquatic plants
  Aquatic Vegetation Fluted substrates to improve function of aquatic vegetation
  Complex Shoreline Profile Improvements Use of material (dredge spoils or fill) to improve the function of the shoreline profile
  Inner Harbour Quay Treatments Amelioration of vertical seawalls
  Reptile Habitat Key and essential habitats for turtles
  Vegetated Shorelines Contour Modifications Key habitat components of vegetated shoreline
  Log Tangles Structural habitat elements
Coastal Wetlands Shoreline Vegetation Zones Critical design consideration for shoreline vegetation
  Reptile Habitat Key and essential habitats for turtles
  Log Tangles Structural habitat elements
Estuaries Low Estuary Hooks Structural habitat and in-stream cover
  High Estuary Hooks Structural habitat and in-stream cover with riparian habitats