Overview
This map was developed by a research team at Oregon State University to visualize data on marine biotoxins in shellfish and survey responses on subjective human well-being in the Puget Sound in 2020. The human well-being indicator shown in this map is reported frequency of individual shellfish harvests, shown as an overlay to shellfish biotoxin samples in the Puget Sound.
The purpose of this map is to identify locations and times that may have implications for environmental justice -- through the intersection of frequent harvesters and exposure to marine biotoxins in shellfish.
How to Use
Data exploration
- Click on the charts in the side panel to filter the data displayed on the map.
- Zoom or pan the map view to update the charts in the side panel.
- Take screenshots of different chart filter and map view combinations to compare metrics between places, times, or categories.
Mapping activity
- Click the pin drop button and mark a point on the map approximately where you harvested shellfish between 2014-present.
- Follow the prompts to answer questions about the point you marked.
- Click Save Changes then repeat, marking as many points as you can.
- When you are finished marking points, click Save GeoJSON at the top of the page.
- Upload the GeoJSON file saved to your computer to this survey.
Legend
- Circles represent shellfish biotoxin samples taken in Puget Sound, Washington, sized by intensity of biotoxins detected.
- Charts shown in the panel are synchronized with the map and will dynamically update by panning around or zooming in or out on the map. Charts are recalculated based on the points visible in the current map filter. Charts can also be interacted with to filter the map and other charts. For example, click and drag the line charts to select a range of time, and then gradually slide the range back and forth to visualize a time series.
Overlay layers
- Biotoxin time series - Samples of biotoxins detected in sentinel mussel tissues from Washington State Department of Health.
- Harvesters (2020) - Interpolated survey responses to the question: "In the past year, about how often did you hunt, harvest, gather, or forage for shellfish in the Puget Sound Region?" Answer choices: 1 = Never; 2 = Rarely (1-2 times a season); 3 = Occasionally (3-5 times a season); 4 = Regularly (6-8 times a season); or 5 = Frequently (More than 10 times a season). Frequent harvester responses are visualized in red. The 2020 survey responses reflect harvest frequencies for bivalve shellfish only (e.g. clams, oysters, mussels).
- Biotoxin intensity (2020) - Interpolated mean concentration of biotoxins sampled in sentinel mussels. There are three intensity layers, one for PSP (orange), DSP (purple), and ASP (yellow).
- Biotoxin frequency (2020) - Interpolated mean frequency of biotoxins detected in sentinel mussels. There are three frequency layers, one for PSP (orange), DSP (purple), and ASP (yellow).
- Boundaries - Spatial boundary layers are included for recreational closure zones, commercial growing areas, and ceded lands.
Data Sources
Human Dimensions Lab | Oregon State University
Contributors: Kali Abel, David Wrathall, and Kelly Biedenweg
This work was supported by EPA STAR award #83694601