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Welcome to the Ecological Society of America's online education resource portal! ESA's EcoEd Digital Library (EcoEdDL) is a forum for scientists and educators to locate and contribute peer reviewed resources for 21st century undergraduate ecology education. Resources are available based on the Creative Commons Non-Commercial Attribution 4.0 International (CC BY-NC 4.0) license. EcoEdDL strives to foster a community of ecology education users and contributors. Need Help or More Info? Contact EcoEdDL@esa.org.

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View Resource Effects of frost on wildflowers: an unexpected consequence of climate change--image 05 of 22

A flowering plant of Helianthella quinquenervis (aspen sunflower, Asteraceae) at the Rocky Mountain Biological Laboratory(RMBL). This species has flower buds that are frost-sensitive. The plants have a mutualism with ants, which are attracted by extrafloral nectar secreted by the bracts that cover flower buds.

 

Publisher: EcoEd Digital Library

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http://www.jstor.org/pss/27651548
View Resource Effects of frost on wildflowers: an unexpected consequence of climate change--image 04 of 22

A graphical representation of a frost event at the Rocky Mountain Biological Laboratory (Colorado). The temperature dipped to 25.1 F on 11 June 2004. Winter snowpack melted at the monitoring location on 8 May that year. The late-spring frost killed flower buds that had developed in the four weeks following snowmelt.

 

Publisher: EcoEd Digital Library

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View Resource Effects of frost on wildflowers: an unexpected consequence of climate change--image 03 of 22

Date of winter snowpack melt during the past 36 years at Rocky Mountain Biological Laboratory. A trend toward earlier snowmelt was noted during the study period, though the correlation was not statistically significant due to large year-to-year variability.

 

Publisher: EcoEd Digital Library

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View Resource Effects of frost on wildflowers: an unexpected consequence of climate change--image 02 of 22

An example of a late spring frost and snow event at the Rocky Mountain Biological Laboratory (RMBL), at 9,500 feet in the Colorado Rocky Mountains. This photograph was taken on 13 June 2001, when the temperature went down to 21.5 F, (-5.8 C). This cold period killed flower buds of several wildflower species that had already produced leaves and buds.

 

Publisher: EcoEd Digital Library

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View Resource Effects of frost on wildflowers: an unexpected consequence of climate change--image 01 of 22

A view of the Rocky Mountain Biological Laboratory, a high-altitude field research station at 9,500 feet in the Colorado Rocky Mountains. RMBL has supported field work since it was founded in 1928, and is the location of the research described in this slide show.

 

Publisher: EcoEd Digital Library

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