Journal article
Mixed signals in trends of variance in high-elevation tree ring chronologies
Journal of mountain science = 山地科学学报（英文版）, Vol.14(10), pp.1961-1968
10/01/2017
DOI: 10.1007/s11629-017-4425-9
Abstract
Increases in climate variability, including extremes, may be expected with anthropogenic climate change, but some evidence is contrary. The issue is important because the consequences of variability can be critical for ecosystems. It has long been known and often rehearsed that ecological consequences of increased variability may be greater than those that result from expected changes in mean temperature and precipitation. Tree rings have been useful indicators of ecological response to climate change and used as proxies for climate variability;work in the Rocky Mountains, USA, has been particularly informative. Chronologies from two high elevation species ranging over 2500 km were analyzed for changes in variance through time. These spatially extensive and disaggregated tree ring records do not show a consistent pattern of change in variance over the past 500 or 100 years; heteroscedasticity has recently been greater. A lack of consistent response in growth over a period encompassing changes in mean climate indicates that mountain environments, with inconsistent trends in temperature and precipitation,may be too complex to act as sentinels.
Details
- Title: Subtitle
- Mixed signals in trends of variance in high-elevation tree ring chronologies
- Creators
- George P Malanson - University of Iowa, Geographical and Sustainability Sciences
- Resource Type
- Journal article
- Publication Details
- Journal of mountain science = 山地科学学报（英文版）, Vol.14(10), pp.1961-1968
- Publisher
- Science Press; Heidelberg
- DOI
- 10.1007/s11629-017-4425-9
- ISSN
- 1672-6316
- eISSN
- 1993-0321
- Number of pages
- 8 pages
- Language
- English
- Date published
- 10/01/2017
- Description audience
- Academic
- Academic Unit
- Geographical and Sustainability Sciences
- Record Identifier
- 9983561198402771
Metrics
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