Freshwater

Requirements include:

  • the availability of suitable freshwater habitat for some part of the life cycle.
  • enough riparian vegetation to protect aquatic habitats from the impacts of adjacent land uses.

Stein valley (c) Mike Pearson

Threats include:

  • loss of riparian vegetation resulting in:
    • higher water temperatures.
    • increased inputs of sediment, toxin and nutrients.
    • loss of habitat complexity.
    • increased erosion.
  • alterations to natural hydrology (water budget) resulting from:
    • watercourse diversion.
    • floodplain dyking.
    • excessive ground or surface water withdrawals.
    • increased impermeable area.
    • drainage improvements that lower water tables.
  • reduced inputs of terrestrial food items (e.g. 'insect rain').
  • excessive inputs of toxins, sediment and nutrients.

 (c) Mike Pearson

Strategies

Maintain riparian reserve zones

  • Acquire habitat by purchase or via dedication during the land subdivision, development permit or rezoning processes.
  • Require conservation covenants on habitats during the land subdivision, development permit or rezoning processes.
  • Require large setbacks from sensitive aquatic habitats using a zoning by-law or the subdivision and development permitting processes.
  • Restore riparian habitats on local government lands.
  • Restrict tree cutting and land clearing in riparian areas using development permit area conditions or a bylaw.
  • Encourage the establishment of native riparian vegetation on private lands through tax incentives, education, and the provision of plants and assistance.

Planting at aldergrove lake regional park (c) Mike Pearson