Spring 2017

Document Type

Poster Session


Biological Sciences


Lisa R. Moore


Cyanobacterial blooms, like algal blooms, are a much studied phenomena; and many triggers that cause these blooms are well understood. Usually, excess nutrients (such as soluble nitrogen or phosphate) are prerequisite for a bloom to occur. Since 2013, annual summer cyanobacterial blooms have been observed at Highland Lake (HL), located in Cumberland County, Maine. Data going back more than 15 years, collected by the Highland Lake Association, shows this is a new phenomenon in this body of water. Other investigators have shown HL water chemistry to have high aluminum to phosphorous and aluminum to iron ratios. These metals bind phosphate making it unavailable to most microbes, decreasing the probability a bloom will occur. This raises the questions of what particular cyanobacteria are present, and the source of phosphate.

Start Date

April 2017



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.