Integrated restoration prioritization–A multi-discipline approach in the Greater Toronto Area

Abstract

Ecosystem restoration planning requires an integrated approach considering many components of the natural system when prioritizing where and what to restore. Toronto and Region Conservation Authority and partners have developed a multi-discipline and multi-benefit approach to restoration planning that facilitates effective restoration works, which contribute to realizing regional watershed objectives pertaining to natural system functions. Through various long term monitoring and modeling initiatives, Toronto and Region Conservation Authority has amassed a wealth of knowledge on terrestrial biodiversity, aquatic ecosystems, hydrology, and headwater conditions. The aim of Integrated Restoration Prioritization is to identify impairments and threats to ecosystem function as a means to improve the delivery of ecological goods and services. Consolidating data and comparing discrete areas based on different parameters and thresholds can help direct decision making for future restoration initiatives. The first iteration of the Integrated Restoration Prioritization analyzed existing datasets, identified gaps, and made recommendations for future monitoring. This approach will assist with delisting Beneficial Use Impairments #14 Loss of Fish and Wildlife Habitat and #3 Degradation of Fish and Wildlife Populations within the Toronto Remedial Action Plan area. Further, the Integrated Restoration Prioritization will assist in implementing the recommendations made in watershed planning documents pertaining to fisheries and natural heritage management. Specifically, the Integrated Restoration Prioritization will identify where impairments to ecological function are located, ensure habitats and corridor linkages are protected or restored, and prioritize local and upstream catchments that could contribute most to improving the natural system if restored.