Name: High Elevation Ephemeral Geophytes: Fire & Other Disturbances at Snowline
Start: 2025-11-20T19:00:00-08:00
End: 2025-11-20T20:00:00-08:00

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https://friendsoftheahartherbarium.org/eventsviewcalendar/high-elevation-geophytes

Ephemeral geophytes at high elevations are only available for study for five to six weeks after snowmelt and therefore are rarely investigated. From 2009 to 2021, Hal Mackey and Rob Schlising collected life history data on the closely related *Dicentra uniflora* Kellogg and *Dicentra pauciflora* S. Watson (Papaveraceae) in the Cascade Range of northeastern Butte County, California, through field surveys and plantings. The field data were supplemented with CCH2 herbarium records from the late 1890’s to the mid-2020’s. These combined data provided a baseline to assess the effects of Dixie Fire in the summer of 2021, which burned to varying intensities in three of their study sites and multiple plots within each site. Post-fire surveys from 2022 through 2025 showed fire responses that ranged from slight to catastrophic, depending on the fire intensity. There were also unexpected post-fire consequences from other plants and animals. In addition to Dixie Fire impacts, another Dicentra study location near Butte Meadows was impacted by fire line construction during the Park Fire in the summer of 2024. These 16 years of data, both pre- and post-fire, have provided insights into recovery times and persistence after major forest fires.

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High Elevation Ephemeral Geophytes: Fire & Other Disturbances at Snowline 

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California Native Plant Society - Mount Lassen Chapter

High Elevation Ephemeral Geophytes: Fire & Other Disturbances at Snowline

California Native Plant Society - Mount Lassen Chapter

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