Wild hyacinth (Camassia scilloides) COSEWIC assessment and status report: chapter 8

Limiting Factors and Threats

Three sites, Mosquito Point (a sub-population of Fish Point), North Harbour Island and Bois Blanc Island have been lost due to human activity. The first, due to recent cottage lot development less than 10 years ago; North Harbour was recorded by Core (1948), and Bois Blanc was collected by Macoun in 1882.

Double Crested Cormorants have recently experienced a major expansion of their populations in the lower Great Lakes and are known to be nesting on several of the Erie Islands. They have significantly impacted the wild hyacinth populations on East Sister Island (now extirpated), greatly reduced the large population on Middle Island, and impacted other fauna and flora, especially the ground flora, through direct contact and their nutrient-rich excrement.

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