57 Articles found
Precision Measurement Engineering, Inc. (PME) Articles
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miniDOT® Logger Dives Down in Lake Anza
The City of San Francisco is synonymous with iconic landmarks like the Golden Gate Bridge and Alcatraz Island, as well as the surrounding bay. While the bay’s cold waters and brisk currents hardly invite casual swimmers, less than 15 miles due ...
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miniDOTs® Monitor CA Red-Legged Frog Reintroduction
When imagining a rich wilderness, places like Los Angeles seldom come to mind. The Southern California city is now the second-most populous in the United States; but it was not always the urbanized area we picture today. Remnants of untamed areas ...
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miniDOT® Loggers in East Africa’s Mara River
Case Study Description Taking shape from Kenyan tributary streams, the Mara River is a defining feature winding through Eastern Africa’s Serengeti region. Before discharging into Tanzania’s Lake Victoria, the Mara snakes across miles of savannah ...
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Understanding Algal Activity in Oligotrophic Waters
Introduction Dr. Heili Lowman is a post-doctoral scholar and member of PME’s New Researcher Program studying aquatic ecology and biogeochemistry at the University of Nevada at Reno. Dr. Lowman and her colleagues have been monitoring ...
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The Cause and Effect of Harmful Algal Blooms
Management of Cyanobacteria Harmful Algal Blooms The California Lake Management Society (CALMS) is a non-profit organization that works to manage lakes and reservoirs throughout California. In April of 2023, Precision Measurement Engineering (PME) ...
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The Marvelous Missing miniDOT®
Case Study Description When miniDOTS Go Missing Lake Tegel – or Tegeler See to the local Berliners– is the second largest lake in Berlin. The sprawling lake spans roughly 4.6 square kilometers, encompassing several islands and, until ...
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Measuring Ecosystem Metabolism After Stream Restoration
Measuring Ecosystem Metabolism After Stream Restoration Case Study Description Dams constructed of coarse woody debris (CWD) have long been used as a cost-effective approach for stream restoration efforts. Despite its relative prevalence, little is ...
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Coastal Development’s Impact on Tidal Creeks: An Ecosystem Metabolism Analysis
The steady march of progress looks different to all, but in his doctoral dissertation Sam Bickley, Ph.D., measured the effect that a certain type of progress is having on tidal creeks. Rapid development along coastal areas, particularly residential ...
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The Cause and Effect of Harmful Algal Blooms
Management of Cyanobacteria Harmful Algal Blooms The California Lake Management Society (CALMS) is a non-profit organization that works to manage lakes and reservoirs throughout California. In April of 2023, Precision Measurement Engineering (PME) ...
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Sea Technology Magazine Features the miniDOT® Logger
Precision Measurement Engineering (PME) recently announced the miniDOT® Logger is now verified to reach measurable depths of 300 meters; tripling the device’s original logging limits of 100 meters. Sea Technology Magazine has ...
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PME Welcomes Christina Linkem as a Participating Researcher in the New Researcher Program
Christina Linkem joins the PME New Researcher Program as the fourth researcher. Christina received a Bachelor of Science in Biology from the University of Hawaii at Manoa and recently graduated from Oregon State University with a Master of Science ...
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When Should I Use a Blue Excitation Configuration?
When measuring chlorophyll levels using the C-FLUOR, a red excitation configuration is recommended for use in aquatic habitats that have high dissolved organics. Unlike blue excitation, red excitation does not have as much interference ...
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When Should I Use a Red Excitation Configuration?
When measuring chlorophyll levels using the C-FLUOR, a red excitation configuration is recommended for use in aquatic habitats that have high dissolved organics. Unlike blue excitation, red excitation does not have as much interference ...
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Why is Water Temperature Important in Determining Water Quality?
Water temperature as a key factor in the success of aquatic environments and influences several parameters that can alter its physical and chemical properties. The temperature of water defines growing seasons and dictates what species can survive in ...
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What is Dissolved Oxygen?
Dissolved Oxygen (DO) is a measurement of how much oxygen is dissolved in water. This measurement, along with temperature and pH, can tell us a lot about water quality. Oxygen is vital to all complex life, so it is crucial that scientists can ...
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Alyson Hall Selected for PME New Researcher Program
Alyson Hall joins the PME New Researcher Program and is the second researcher participant introduced. Alyson received a Bachelor of Science in Environmental Biology from Stony Brook University and is currently in the Marine Science Master ...
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Heili Lowman, Postdoctoral Scholar, Joins PME’s New Researcher Program
Heili received a Bachelor of Arts in Chemistry, French and Francophone Studies from Vassar College and a Ph.D. from the University of California Santa Barbara in Ecology, Evolution and Marine Biology. She is currently a Postdoctoral Scholar in the ...
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PME’s miniDOT® logger Aids Researchers in Dissolved Oxygen and Temperature Monitoring
The origin of the miniDOT® Logger came from a quick sketch on a napkin in a bar by the founder of PME, Mike Head in 2009. From there the R&D process began and the miniDOT’s first calibration was made in 2011. For more than a decade, ...
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PME Celebrates 40th Anniversary and Launches PME New Researcher Program
Precision Measurement Engineering is thrilled to celebrate its 40th anniversary of supporting research efforts by engineering accurate, long-lasting technology. PME recently launched a new collaborative research program to continue supporting the ...
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What is a Q Value?
When looking at miniDOT measurements, the Q value is the quality of the measurement taken. This value is used to help determine the condition of the miniDOT measurement operations.Normally a miniDOT’s Q value will stay close to 1.0, but for ...