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Abstract Detail


Latvis, Maribeth [1], Leffler, A. Joshua [2], Perkins, Lora [2].

Smokin’ germination: evaluating the phylogenetic signal of an important fire-cue response in North American native plants.

Fire is an ecological disturbance that influences plant communities globally and is often a critical trigger for germination of seeds within the seedbank. While many species will germinate following exposure to extreme temperature from fires, other species germinate in response to chemical cues distinct from direct heating. Smoke-induced germination represents a striking example of a response to a chemical signal and has been noted across different regions of the world and across thousands of distantly related taxa. Much of this research has been conducted on plant communities in Australia, the Mediterranean Basin, and South African fynbos, and smoke “pre-treatment” of seeds has been used to improve ecological restoration success in these areas. Potential evolutionary patterns of this response have been debated, but an examination of smoke-induced germination in a phylogenetic comparative framework has been lacking. We conducted controlled smoke treatment experiments with 352 herbaceous species commonly used for restoration of native plant communities in North America and quantified fraction of seeds germinating and time to germination with survival analysis. We present the first comprehensive data for smoke-induced germination for North American species (based on commercially available seed), explore the phylogenetic signal of smoke-induced germination, and determine if species range, habitat type, and other life history attributes are correlated to this response. We also discuss implications for shifting restoration approaches to consider increasing number and size of wildfires across western North America.

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Related Links:
SDState Native Plant Initiative

1 - South Dakota State University, Department Of Natural Resource Management, 1390 College Avenue, Box 2140B, South Dakota State University , Brookings , SD, 57006, United States
2 - South Dakota State University, Natural Resource Management, Brookings, SD, 57007, USA

phylogenetic signal.

Presentation Type: Oral Paper
Session: ECO1, Ecology: Phylogeny, Disturbance, and Tree Architecture Over Large Spatial Scales
Location: /
Date: Tuesday, July 20th, 2021
Time: 10:15 AM(EDT)
Number: ECO1002
Abstract ID:975
Candidate for Awards:None

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