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New blue-green algae spotted at Castle Semple Loch.

First sighting of Gloeotrichia pisum

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A species of cyanobacteria (they’re a combination of bacteria and algae) named Gloeotrichia pisum has been recorded for the first at Castle Semple Loch. With a warming of the water temperature two species of blue-algae are prominent in the loch just now. Under the microscope Anabaena flos-aquae looks like a load of beads and is one of the more common cyanobacteria found in this loch; the larger cells in the Anabaena picture you can see are reproductive spores.

Care should be taken if involved in water activities to wash skin and clothing afterwards as cyanobacteria can cause allergic reactions and more serious illness if they accumulate on the loch shore.














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