Requirements include

  • access to both freshwater and riparian habitats.
  • wide riparian reserve zones for the terrestrial portion of the lifecycle.
  • abundant cover in both aquatic and terrestrial habitats.

Threats include:

  • loss of habitat through drainage, infilling or land clearing.
  • toxic chemicals, which are readily absorbed through amphibian skin and may affect food availability.
  • loss of native riparian vegetation.
  • changes in hydrology (water levels and flows) that dry out habitats or wash away egg masses.
  • introduced predators including dogs, cats, bullfrogs and non-native fishes.


Prevent toxic chemical releases

  • Ensure the use of oil/grease separators, sediment traps, and/or treatment wetlands to treat runoff from paved areas before it enters habitats.
  • Prevent dumping of toxic materials into storm or sanitary sewers through public education and a by-law.
  • Ban insecticide and herbicide use for cosmetic purposes on private lands within jurisdiction (municipalities only).
  • Keep high-risk industries away from sensitive habitats using zoning controls on land use and/or large setbacks from sensitive habitats.

Maintain adequate riparian reserve zones

  • Restore native riparian vegetation and large woody debris on local government lands.
  • Restrict tree cutting and land clearing in riparian areas using a by-law or development permit area restrictions.
  • Establish adequate setbacks from habitats through a zoning by-law, development permit areas, and/or the land subdivision process.
  • Require conservation covenants on riparian areas during the rezoning, subdivision, and development permitting processes

Prevent changes to habitat hydrology

  • Limit impermeable area in new developments through a zoning by-law.
  • Use density bonuses to encourage higher density, clustered development and reduce the development footprint.
  • Require on-site infiltration of rainwater in new developments.
  • Reduce water use through pricing and lawn watering restrictions.
  • Reduce reliance on ecologically sensitive sources of municipal water.
  • Restrict tree cutting on steep slopes.

Prevent introductions of non-native predators

  • Enact animal control by-laws to prevent domestic pets from entering species at risk habitats.
  • Educate the public on the threat posed to species at risk by non-native species.

Incorporate habitat enhancement into maintenance activities and capital projects

  • Restore aquatic and riparian habitats on local government lands.
  • Create or restore aquatic habitats during drainage maintenance works.  
  • Provide safe aquatic and terrestrial passage routes under roadways.
  • Install signage or temporarily close roads at known crossing points during critical dispersal periods.

For more detailed information please consult: