Effects of frost on wildflowers: an unexpected consequence of climate change--image 11 of 22

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Results of a demographic study of Helianthella quinquenervis (aspen sunflower, Asteraceae) within plots at 2,900m at the Rocky Mountain Biological Laboratory. Note that seedlings are not common in most years, and the overall population seems to be declining. The lack of seedlings in most years is a consequence of frost damage to flower buds the previous year (so no seeds were produced). The population decline is an apparent consequence of reduced seed production.

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Primary or BEN resource type	Graph/chart
Secondary resource type	Case study
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Format	jpeg
Temporal and geographic description	Data for Helianthella quinquenervis (aspen sunflower, Asteraceae) in a demography study at the Rocky Mountain Biological Laboratory, Colorado.
Legend (figures/tables)	Number of individuals of Helianthella quinquenervis in demography plots at the Rocky Mountain Biological Laboratory. The number of seedlings each year is shown in blue and the number of older individuals is in tan.
Is Part Of	A slide show about the effects of frost on Colorado wildflowers at the Rocky Mountain Biological Laboratory.
Collection Link	http://esa.org/ecoed/folders/0090/effectsoffrostonwildflowers
Ecological Core Concept	Populations -- Population growth and regulation Populations -- Density and distribution Human impacts -- Climate change Human impacts -- Biodiversity loss Applied ecology -- Conservation
Classification	Conservation Targets Under Global Change Collection
Drought & Water-Ecosystem Services Collection	Off
Conservation Targets Under Global Change Collection	On
Big Data Collection	Off
Editor's Choice	No
Audience	Undergraduate upper division 15-16 Undergraduate lower division 13-14
Pedagogical Use Description	The slide show could be used as part of a lecture on the consequences of climate change, or the ecology of the Rocky Mountains.
Keywords	demography, seedling
Life science discipline (subject)	Ecology
Primary Author Controlled Name	David Inouye
Primary Author Affiliation	Dept. of Biology University of Maryland College Park, MD 20742-4415
Primary Author email	inouye@umd.edu
Secondary Author Email(s)	inouye@umd.edu
Submitter Name	David Inouye
Submitter Email	inouye@umd.edu
Rights	Free use with attribution. Contact photographer if you want a higher-resolution version. And contact author if you'd like a single file with all the slides so you don't have to download them one at a time (this capability may be added to EcoEd in the future).
Review Status	Accepted
Resource Editor	Unknown
Reviewer A	Unknown
Reviewer B	Unknown
Date Of Record Submission	2011-12-01

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