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adams

Green "seaweed" in Oldman

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Anyone else notice a lot of green seaweed-looking stuff on the streambed of the middle section of the Oldman? The area around the Gap was absolutely carpeted in it last year (haven't been there this year) and now this year I noticed it up further (close to the confluence). I don't recall seeing it in year's past. Noticed it on the Crowsnest last year too (again, haven't been this year). 

Does anyone know what it is? Where it came from? Is it harmful in any way to the fish or environment?

Adams

 

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3 hours ago, adams said:

 

Does anyone know what it is? Where it came from? Is it harmful in any way to the fish or environment?

Adams

 

Do a google search of "Aquatic plants of Alberta". You will find excellent descriptions to help identify the species. If it is a native species and not overly abundant, it is probably a good thing. If it is an invasive species, then not so beneficial. That said, aquatic plants, moss, algae, are all important components of a diverse, healthy riverine system.

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