Professor, Climate Change, United States discussed on Science Friday

Science Friday
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Professor forest and range lindh stewardship but colorado state university in ford college f4 collins and a former wildlife firefighter welcome to signs friday thanks for having me let me ask you first alexandra a the give us a snapshot of what you found here humans can override the effects of climate change on wildfire that's right but the situation is very nuanced in our study we looked at thirty seven different regions across the continental united states and tried to understand how variation and climate activity controls variation an annual area burnt for the different regions and we found that climate change may be important for fires in some areas because the relationships are strong but in other areas climate was not a significant factor in explaining annual area burned so we asked why is that why are some areas more controlled by climate than others and the only factor we've found to significantly explain this difference in regions was the presence of human and so humans can alter fire patterns and a whole range of ways but the clear signal is that when there are a lot of humans present it can scramble the relationships between fire and climate dr dr students students room in the u study here he looks at places that are more untouched less influenced by humans and you found that climate change really does seem to have an effect after wildfires sweep through those place has tell us about that yeah so we often hear about how wildfires obviously when they're happening in the news but these landscapes take a really long time to recover also rate and that's not something that we hear a lot about but what we looked at was how what factors might the influencing tree regeneration success or failures and we found a pretty interesting relationship with the hotter drier conditions that we've seen since two thousand and that resulting in a decrease in regeneration density as well as an regenerated success at all so he had m about thirty percent of our sights having no seedlings at all.

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