This map was developed by a research team at Oregon State University to visualize shellfish stakeholders' current and future vulnerability to ocean acidification. For more information about the project, click here.
The map displays circles wherever an ocean acidification (OA) hotspot was either hindcasted or forecasted by a model of carbonate chemistry in the California Current between 1995-2050 (Hauri et al., 2013), adapted from the Regional Ocean Modeling System (ROMS).
An OA hotspot in this map is defined as a point where modeled aragonite saturation state is less than or equal to Ω 1.4, a common threshold used in shellfish literature as the point when shell-building becomes stressful; conditions under Ω 1.0 are corrosive to shell-building.
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. Chart counts are recalculated based on OA hotspots that are visible in the current map filter.
Time window slider - You can click and drag on the timeline in the upper left corner to select a time window of interest. Points on the map will be filtered to only display the hotspots that were present in the model within the time window selected.
Species response curves - Hovering over the species response curves displays the percent change in growth from pre-industrial for four commercially important species of shellfish: 1) Pacific oysters, 2) Olympia oysters, 3) Mediterranean mussels, and 4) California mussels. - Panning around or zooming in or out on the map makes an orange line appear over the species response curves, and this line represents the mean aragonite saturation state of all OA hotspots within the current view.
Intensity bar chart - A count of OA hotspots by their intensity is displayed in a dynamic bar chart. You can click on any of the bars to filter out only the OA hotspots that fall within the intensity range(s) selected. Panning around or zooming in or out on the map will automatically update the count of hotspots per intensity being shown on the chart.
Frequency bar chart - A count of OA hotspots by their frequency is displayed in a dynamic bar chart. You can click on any of the bars to filter out only the OA hotspots that fall within the frequency range(s) selected. Panning around or zooming in or out on the map will automatically update the count of hotspots per frequency being shown on the chart. Frequency is defined as the number of months per year that any one point in the model is less than or equal to the Ω 1.4 OA hotspot threshold.
Screenshots are open for use with the following citation:
Katz, B. (2020). Vulnerability and adaptation of Pacific Northwest shellfisheries to ocean acidification [Master's thesis, Oregon State University]. Oregon State University.