A HAB is a Harmful Algal Bloom, a phenomenon that occurs when colonies of algae grow out of control, occasionally producing toxins that can kill fish, mammals, and birds and cause human illness.  HABs are a growing problem in waterways everywhere, including the Adirondacks. This is a half-pi shawl depicting the conditions favorable for the formation of harmful algal blooms which include sun, warm, calm water, and nutrients.  In this improvised shawl the sun is at the top and solid color rows depict warming water temperature. Next is a section of wavy stitches followed by plain garter stitch which depicts the transition to calm conditions. Beads represent nutrient inputs. At the bottom edge, the combination of these factors – sun + warm, calm conditions + nutrients – results in HABs represented by bright green roving.

More details available here on Ravelry.

Creator: Michale Glennon