Every summer, lakes are disrupted by vibrant blankets of blue-green algae, causing ecological imbalances and potential toxin exposure for humans. Algae thrive in warm temperatures and nutrient-rich environments. Rolf Vinebrooke, a freshwater ecologist and professor in the University of Alberta’s Department of Biological Sciences, shares insights and tips to consider before visiting the beach this summer.
Blue-green algae, also known as cyanobacteria, can produce toxins that are harmful to humans and animals. These toxins can lead to symptoms like skin irritation, nausea, and sore throat. Alberta lakes have some of the highest toxin production in Canada. Cyanobacteria also produce hepatotoxins that target liver tissue in higher organisms and neurotoxins that disrupt the nervous system. Toxins from blue-green algae can be fatal for livestock, wildlife, and pets that consume water from affected lakes.
Avoiding water with blue-green algal blooms is the best way to prevent exposure. Public advisories posted by Alberta Health Services serve as warnings based on water monitoring data. It’s important to rinse off thoroughly after contact with a bloom. Pets, in particular, should be kept away from blue-green algae-infested water as they may require professional treatment if exposed.
Blue-green algae blooms have significant environmental consequences. When conditions are optimal, these algae can propagate unchecked, leading to oxygen loss in water and subsequent fish kills. Human activities, such as fertilizer usage and the release of phosphorus-containing products, contribute to the nutrient availability that fuels algae blooms.
To combat algae blooms, various methods can be employed, including the use of algae-killing chemicals, bioremediation, and the installation of water fountains in lakes or ponds. Individuals living near water can help by avoiding the introduction of chemical pollutants and protecting coastline vegetation.
Researchers, including Rolf Vinebrooke, study blue-green algae blooms using various approaches, including satellite imaging, in order to gain a better understanding of their development and impact on lake ecosystems. Blue-green algae, the Earth’s original organisms, are still a source of mystery and ongoing research.
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Seven things you should know about blue-green algae (2023, July 6)
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