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Freezing resistance, safety margins, and survival vary among big sagebrush populations across the western United StatesAuthor(s): Brynne E. Lazarus; Matthew J. Germino; Bryce A. Richardson
Source: American Journal of Botany. 106(7): 922-934.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
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DescriptionPhysiological responses to temperature extremes are considered strong drivers of species’ demographic responses to climate variability. Plants are typically classified as either avoiders or tolerators in their freezing‐resistance mechanism, but a gradient of physiological‐threshold freezing responses may exist among individuals of a species. Moreover, adaptive significance of physiological freezing responses is poorly characterized, particularly under warming conditions that relax selection on cold hardiness.
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CitationLazarus, Brynne E.; Germino, Matthew J.; Richardson, Bryce A. 2019. Freezing resistance, safety margins, and survival vary among big sagebrush populations across the western United States. American Journal of Botany. 106(7): 922-934.
KeywordsArtemisia tridentata, Asteraceae, cold hardiness, freezing avoidance, freezing resistance, freezing tolerance, freezing safety margin, ice nucleation temperature, LT50, relaxed selection
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