Topographic position effects on growth depression of California Sierra Nevada pines during the 1982-83 El Nino

J. K. Armstrong, K. Williams, Laura F Huenneke, H. A. Mooney

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)

Abstract

The El Nino-Southern Oscillation event of 1982-83 was associat with severe winter weather in California, including increased snow accumulations in the Sierra Nevada relative to 1984. The ratio of 1983 needle length to 1984 needle length in 2 species of pine growing near timberline in the Sierra Nevada was examined for evidence of growth depression during the El Nino year. Trees of both Pinus albicaulis (whitebark pine) and P. contorta var. murrayana (lodgepole pine) were sampled from a meadow on the valley floor, N- and S-facing slopes, and at high elevation near treeline. In all cases, average needle length in 1983 was less than that in 1984. Degree of growth depression varied among topographic positions and between species. Whitebark pines displayed greater variation in sensitivity to climatic change. Differences in sensitivity between species were associated with habitat restrictions, eg whitebark pines at high elevations were least affected by the El Nino year, while lodgepole pines were most affected when growing at high elevations. Observed variation in growth depression among topographic positions is probably due to both differences in the length of the 1983 growth season associated with timing of snowmelt and decreased temperatures during the 1983 growing season. -from Authors

Original languageEnglish (US)
Title of host publicationArctic & Alpine Research
Pages352-357
Number of pages6
Volume20
Edition3
StatePublished - 1988
Externally publishedYes

Fingerprint

El Nino
treeline
snow accumulation
snowmelt
El Nino-Southern Oscillation
meadow
growing season
weather
valley
climate change
effect
winter
habitat
temperature

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Armstrong, J. K., Williams, K., Huenneke, L. F., & Mooney, H. A. (1988). Topographic position effects on growth depression of California Sierra Nevada pines during the 1982-83 El Nino. In Arctic & Alpine Research (3 ed., Vol. 20, pp. 352-357)

Topographic position effects on growth depression of California Sierra Nevada pines during the 1982-83 El Nino. / Armstrong, J. K.; Williams, K.; Huenneke, Laura F; Mooney, H. A.

Arctic & Alpine Research. Vol. 20 3. ed. 1988. p. 352-357.

Research output: Chapter in Book/Report/Conference proceedingChapter

Armstrong, JK, Williams, K, Huenneke, LF & Mooney, HA 1988, Topographic position effects on growth depression of California Sierra Nevada pines during the 1982-83 El Nino. in Arctic & Alpine Research. 3 edn, vol. 20, pp. 352-357.
Armstrong JK, Williams K, Huenneke LF, Mooney HA. Topographic position effects on growth depression of California Sierra Nevada pines during the 1982-83 El Nino. In Arctic & Alpine Research. 3 ed. Vol. 20. 1988. p. 352-357
Armstrong, J. K. ; Williams, K. ; Huenneke, Laura F ; Mooney, H. A. / Topographic position effects on growth depression of California Sierra Nevada pines during the 1982-83 El Nino. Arctic & Alpine Research. Vol. 20 3. ed. 1988. pp. 352-357
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