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View Resource Effects of frost on wildflowers: an unexpected consequence of climate change--image 09 of 22

A graph of the number of unfrosted flowers of the aspen sunflower (Helianthella quinquenervis) from an annual count in a 10x45m plot at the Rocky Mountain Biological Laboratory, Gothic, Colorado, by David Inouye. Note the significant fluctuation in the number of heads produced from year to year.

 

Publisher: EcoEd Digital Library

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View Resource Patterns and process in Landscape Ecology: Physical template, biotic interactions, and disturbance regime

Ecological processes and patterns interact at various scales across landscapes. Spatially explicit consideration of pattern and process can better inform ecological questions. This Figure Set introduces students to the variability in scales of pattern and process and to the fundamentals of Landscape Ecology. TIEE

 

Publisher: EcoEd Digital Library

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View Resource Year to year variability in survivorship for the summer annual Erucastrum gallicum

This figure shows survivorship curves for spring cohorts of the summer annual plant Erucastrum gallicum (Brassicaceae) growing in the Jamesville Quarry, Syracuse, NY. It shows how survivorship varies markedly from year to year, due mainly to variability in rainfall. Survivorship approximated a Deevey Type I function in 1976, a year with abundant rain. Survivorship followed a Type III pattern in...

 

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 11 of 22

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...

 

Publisher: EcoEd Digital Library

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