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Southeast CASC Science Seminar: Mangrove Tipping Points
Join us this fall and early winter for a virtual science seminar series highlighting SE CASC funded projects that support resource management actions across the Southeast.

Title: Refining tipping points for range expansion of coastal mangroves in a warming climate

Presenter: Dr. Michael Osland, Research Ecologist, USGS Wetland and Aquatic Research Center

Summary: To improve predictions of tropical range expansion in response to climate change, there is a need to better understand tropical species’ responses to winter temperature extremes. A recent project integrated data from sites across the mangrove range edge in the Gulf of Mexico and Atlantic coasts of North America, including data from a regional collaborative network – the Mangrove Migration Network. In 2018, an extreme freeze event affected 60% of these sites, with minimum temperatures ranging from 0 to -7°C. We used temperature and vegetation data from before and after the freeze to quantify temperature thresholds for leaf damage, mortality, and biomass recovery of the black mangrove (Avicennia germinans) – the most freeze-tolerant mangrove species in North America. Collectively, our results refine temperature thresholds for black mangrove freeze damage, mortality and recovery, which can improve predictions of mangrove range expansion and coastal wetland ecological transformations in a warming climate.

Learn more about this project:

Oct 20, 2020 11:00 AM in Eastern Time (US and Canada)

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