Visualizing human impacts on at-risk marine biodiversity
Visualizing human impacts on at-risk marine biodiversity
A Shiny App to explore data from
O'Hara, C. C., M. Frazier, B. S. Halpern, At-risk marine biodiversity faces extensive, expanding, and intensifying human impacts. Science (2021). doi:10.1126/science.abe6731 .
About this project
How do we calculate impacted range?
For each species, we use IUCN Red List data to identify which stressors threaten it, and where those stressors overlap the species global range. Walk through the process on a few select species!
Impacted range across stressors, by taxon
Impacted range across taxa, by stressor
Cumulative impact on at-risk marine species
Cumulative impact on at-risk biodiversity by stressor category (2013 data shown). Spine length indicates relative species richness (number of at-risk species) in that location. Color indicates proportion of species affected by one or more stressors in that location (purple = 0%, yellow = 100%).
Expansion of impacts from 2003 to 2013
Increase in proportion of impacted species due to expansion of stressor footprint. Spine length indicates relative species richness (number of at-risk species) in that location. Color indicates change in proportion of species affected by one or more stressors in that location: green = 100% -> 0%, magenta = 0% -> 100%, grey = no change.
Note that the change in species affected by the cumulative set of stressors may appear smaller in certain places than the change in species affected by a subset of stressors. This occurs because stressors may be expanding onto ranges of species already affected by another category of stressors. For example, if a species was already impacted by fishing stressors in 2003, and climate stressors expand into the same area by 2013, the cumulative set of stressors will show no change even though the climate stressors will show an increase.
Impact intensification
Intensification and abatement of impacts on at-risk biodiversity. Spine length indicates relative species richness (number of at-risk species). Color indicates % intensification/abatement: green = 100% abatement, magenta = 100% intensification, grey = 0%.
Intensification indicates the proportion (%) of species in a cell experiencing one or more stressors increasing in intensity; abatement indicates proportion of species experiencing one or more stressors decreasing in intensity. Net intensification is the difference: (% intensifying - % abating).