Journal article
Intraspecific variability may not compensate for increasing climatic volatility
Population Ecology, Vol.60(3), pp.287-295
07/2018
DOI: 10.1007/s10144-018-0612-y
Abstract
The role of intraspecific variability is being examined to improve predictions of responses to climate change or invasions and in research on diversity. Simultaneously, the probability and implications of increased high-frequency climate variability have been raised. An agent based model simulated two species on an environmental gradient representing an alpine treeline; a trend in its volatility was added. The species have different levels of variability, and each individual has further unique heterogeneity. Environmental volatility and individual heterogeneity were based on tree ring data from Pinus albicaulis. Simulations show that increasing volatility leads to population declines, including extinctions, and to sharper ecotones, and this impact is only slightly lessened by higher heterogeneity. Some simulation runs reveal an unanticipated selection for greater individual variability when volatility creates strong negative anomalies that fall short of extinction events. Increasing volatility can have significant ecological impacts because negative anomalies are not balanced by positive ones.
Details
- Title: Subtitle
- Intraspecific variability may not compensate for increasing climatic volatility
- Creators
- George P Malanson - University of Iowa, Geographical and Sustainability Sciences
- Resource Type
- Journal article
- Publication Details
- Population Ecology, Vol.60(3), pp.287-295
- Publisher
- Springer Japan; Tokyo
- DOI
- 10.1007/s10144-018-0612-y
- ISSN
- 1438-3896
- eISSN
- 1438-390X
- Number of pages
- 9 pages
- Language
- English
- Date published
- 07/2018
- Description audience
- Academic
- Academic Unit
- Geographical and Sustainability Sciences
- Record Identifier
- 9983561198302771
Metrics
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