A Story with lots of images
This is a test story, it’s going to feature a lot of images:
Checking to see what text in between images does.
Poopy test. Poopy poopy poopy test.
Okay, let’s see what this does. Here’s more text under stacked images. That’s neat, huh?
BIG NEW HEADING
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-Mike Jones
OH SHIT A VIDEO
The report includes dot maps, histograms (visual interpretations of numerical data) and summary statistics to describe the distribution of each element. The histograms for 15 metals indicated high concentrations of those elements in moss at one or more locations, relative to the rest of the dataset. These include high-priority toxics such as cadmium, nickel, lead, and arsenic.
Past research shows that element concentrations in moss reflect atmospheric concentrations, although the strength of these relationships differs by element and is unknown for most of these elements. To better understand these relationships, additional research is needed. Moss samples and measurements taken by an air quality monitor need to be collected from the same locations over time. This would allow scientists to “calibrate” and find the correlation between “nanograms per cubic meter” as measured by an air quality monitor and “milligrams of metal per kilogram of dried moss” as measured in a laboratory.
The PNW Research Station is continuing to work collaboratively with the Oregon Department of Environmental Quality (DEQ) to further understand the relationships between element concentrations in moss and the air.
Cadmium and the Portland moss and air quality study
The scientists conducted additional research on cadmium after the initial analysis of the 2013 data revealed surprising cadmium hotspots. They collected more moss samples in October 2015 while DEQ collected air quality data with a temporary air monitor installed near the largest cadmium hotspot.
Using the data from DEQ’s air monitor, the moss-study team confirmed that moss growing on urban trees is a useful bioindicator of cadmium air pollution. The cadmium findings were published in Science of the Total Environment.
