Prothonotary Warbler (Protonotaria citrea) - Critical Habitat for Species at Risk - Ontario

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This dataset displays the geographic areas within which critical habitat for terrestrial species at risk listed on Schedule 1 of the federal Species at Risk Act (SARA) occurs in Ontario. Under SARA, is “the habitat that is necessary for the survival or recovery of a listed wildlife species and that is identified as the species’ critical habitat in the recovery strategy or action plan for the species.”The geographic area within which critical habitat may occur is represented as “grid squares”. These are coarse (1, 10, 50 or 100 km2) squares based on a standardized UTM grid or coarse National Topographic System (NTS) scales (1:50, 1:250) that serve as a flag to review the associated species’ recovery document. However, not all of the area within these grid squares is critical habitat. To precisely define what constitutes critical habitat for a particular species, it is essential that this geospatial information be considered in conjunction with complementary information provided in the species’ recovery document (recovery strategy and/or action plan). Recovery documents are available from the Species at Risk (SAR) Public Registry ( The recovery documents contain important information about the interpretation of the geospatial information, especially regarding the biological and environmental features (“biophysical attributes”) that complete the definition of a species’ critical habitat.Each species’ dataset is available for download as part of the collection of critical habitat for Ontario. The collection includes both “final” and “proposed” critical habitat as it is depicted in the recovery documents. “Proposed” critical habitat depicted in proposed recovery documents has not been formally identified and is subject to change before it is posted as final. Despite the use of the term “final”, it is important to note that recovery documents (and therefore critical habitat) may be amended from time to time. The SAR Public Registry is always considered as the main source for critical habitat information. Species are added to the collection as the data becomes ready, which may occur after the recovery document has been posted on the SAR Public Registry and may be modified once the recovery document is posted final or is amended. Critical habitat identification alone is not an automatic “protection” designation. Federal or non-federal laws or bylaws may be in place to provide protection.

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