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9 results

Tags: cyanobacteria

Views: 108
Last Modified

January 30, 2019

Description

Cyanobacteria (also referred to as blue-green algae) are common photosynthetic bacteria that live in surface waters. Under favorable conditions, such as warm water and high nutrient content, these bacteria can form nuisance “blooms”. The presence of blooms in recreational water causes unpleasant...


Views: 9
Last Modified

December 19, 2014

Description

Pigeon and Wabamun Lakes are among the most heavily used recreational lakes in Alberta. Recently, apparent increases in algal blooms and fish kills have threatened the ecological integrity of these systems and may negatively affect their value to users. Limnological studies for the lakes are...


Views: 31
Last Modified

September 1, 2014

Description

Harmful blue-green algae (toxic cyanobacteria) blooms in surface water are prevalent in Alberta. The presence of blue-green algae in recreational water causes unpleasant aesthetics, and exposure to some toxin-producing blue-green algae may pose potential health risks. There have been increased...


Views: 13
Last Modified

May 1, 2014

Description

Pigeon Lake is highly valued for both its aquatic and recreational resources. Recent severe cyanobacterial blooms have led to an increased concern about the lake’s water quality. In order to improve water quality there is first a need to better understand the ecology and chemistry of the lake and...


Views: 19
Last Modified

March 1, 2014

Description

Occurrences of significant blue-green algae (cyanobacteria) blooms have resulted in stakeholders at Pigeon Lake seeking management options to assist with reducing the frequency and intensity of such events. To more effectively target activities, a nutrient budget was developed to identify...


Views: 13
Last Modified

August 1, 2010

Description

Alberta’s nutrient-rich lakes and reservoirs often experience blooms of cyanobacteria (a.k.a. blue-green algae) during summer and early fall. Common species of cyanobacteria can produce potent liver and/or nerve toxins. Cyanotoxin monitoring was incorporated into Alberta’s Integrated Lake and...


Views: 7
Last Modified

January 1, 2008

Description

When cyanobacteria grow profusely and congregate, they make lake water look like pea soup. This phenomenon is called a bloom. Alberta has more than 100 species of cyanobacteria, ranging from tiny cells invisible to the naked eye to large species that look like fine grass clippings, small...


Views: 20
Last Modified

January 1, 2008

Description

Alberta's nutrient-rich lakes, ponds and reservoirs can support blooms of blue-green algae, scientifically known as cyanobacteria, some of which can produce toxins hazardous to people, pets, livestock and wildlife.


Views: 7
Last Modified

August 24, 2006

Description

Surface waters contain surface-active agents or surfactants that lessen the surface tension of waters. Diminished surface tension allows air bubble to persist at the water’s surface. Vigorous mixing of surface water generates bubbles that build up as foam.