> DSBRT - PIC 3 - Natural Heritage and Tree Inventory | Metrolinx Engage

DSBRT - PIC 3 - Natural Heritage and Tree Inventory

Detailed field investigations were undertaken between April 2019 and June 2020 to examine natural heritage features and tree resources.

The following are present within the study area:

  • 7,926 trees consisting of 86 species
  • 305 plant species, 57% native and 43% non-native
  • 7 herpetofauna, 1 invertebrate, 9 mammal species and 69 bird species
  • 17 species at risk (3 aquatic, 2 plant, and 12 wildlife): 3 were identified during field investigations: Barn Swallow, Butternut and Kentucky coffee tree
  • 3 Provincially Significant Wetlands
  • 14 Environmentally Significant/Sensitive Areas, and 3 Areas of Natural and Scientific Interest
  • 23 watercourses within 10 watersheds

An orthophoto map of the study area, highlighting natural heritage features including wetlands, waterbodies, Greenbelt Plan boundaries, and environmentally sensitive areas. A line indicates the proposed BRT route and includes a 120 metre buffer.

Impacts and Mitigation

Potential construction impacts include:

  • Removal / disturbance of roadside trees, vegetation/vegetation communities and significant natural heritage features
  • Removal / disturbance of wildlife/wildlife habitat
  • Disturbance to species at risk/species at risk habitat
  • Disturbance to fish/fish habitat
  • Disturbance to soils and an increase in erosion and sedimentation

To mitigate construction impacts, the following measures are proposed:

  • Construct buffers around trees and other sensitive environmental features to prevent injury and minimize disturbance
  • Adhere to timing restrictions for construction and in-water works
  • Implement erosion and sediment control measures
  • Meet requirements under the Canada Species at Risk Act and Ontario Endangered Species Act

Operational impacts and mitigation measures will be presented at Public Information Centre #4.

← Return