Scale matters in determining vulnerability of freshwater fish to climate changes

The silver chub isn't considered sensitive to climate change on a national scale, but context matters. For example, if climate change sensitivity is evaluated in only one region of the United States, the freshwater fish appears quite a bit more susceptible.

"The spatial extent can be really relevant for specific cases, especially when you've got a species that is widespread but might be identified as more vulnerable in one region than another due to differences in distribution," said Silknetter, who is also an affiliate of the Global Change Center's interfaces of global change graduate program.

The research team sees relative climate change sensitivity rankings as another tool for conservation managers hoping to mitigate the effects of climate change. "Ensuring that our methods follow best practices for open science is really important if we're going to be transparent in what we're doing," Silknetter said."We need to be proactive in trying to identify vulnerable species early because at some point there are fewer options for a species if the damage has been done."

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