Skip to Main Content
Variable climate response differentiates the growth of Sky Island Ponderosa PinesAuthor(s): Paula E. Marquardt; Brian R. Miranda; Shane Jennings; Ginger Thurston; Frank W. Telewski
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
Download Publication (1.0 MB)
DescriptionWe examined the climatic sensitivity of two partially sympatric pine species growing at their transition zone in the Santa Catalina Mountains, AZ, USA. Pinus arizonica is found at lower elevations compared to P. ponderosa var. brachyptera. Ring widths were measured in trees at two sites and correlated with precipitation, temperature, and Palmer Drought Severity Index to assess the influence of climate on growth. The two species were analyzed within and between sites, which have similar elevation, aspect, and species composition, although soils at the two sites have different water-holding capacities. Response function analyses of P. arizonica [sampled near its upper (and wetter) elevation limit], and P. ponderosa var. brachyptera [sampled near its lower (and drier) elevation limit] indicated that annual growth correlated positively and strongly with spring precipitation at both study locations. Local site conditions had a major impact on tree growth and variability in site conditions helped resolve the differences in species' response to climate. For example, at the less dry site, growth of the lower-elevation pine (P. arizonica) responded to early-winter precipitation, while P. ponderosa var. brachyptera did not. Also, correlation analysis indicated that P. arizonica's growth was more sensitive to drought for longer periods than P. ponderosa var. brachyptera. Finally, partial temperature-growth correlations of P. arizonica and P. ponderosa var. brachyptera indicated growth was limited by increased growing season and winter respiration, respectively. Rising night-time temperatures during spring significantly reduced growth of P. arizonica at Mt. Lemmon. These findings demonstrate subtle yet meaningful interspecies differences in sensitivity to seasonal moisture stress and use of carbon resources.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMarquardt, Paula E.; Miranda, Brian R.; Jennings, Shane; Thurston, Ginger; Telewski, Frank W. 2019. Variable climate response differentiates the growth of Sky Island Ponderosa Pines. Trees. 33: 317-332. https://doi.org/10.1007/s00468-018-1778-9.
KeywordsDendroecology, Drought stress, Pinaceae, Response function, Tree ring, Ponderosae
- Shifts in Climate–Growth Relationships of Sky Island Pines
- Genetic variation in the Ponderosae of the Southwest
- Effects of ozone and climate on ponderosa pine (Pinus ponderosa) growth in the Colorado Rocky Mountains
XML: View XML