Carbon isotopic composition of cypress trees from South Florida and changing hydrologic conditions

W. T. Anderson, Leonel Sternberg, M. C. Pinzon, T. Gann-Troxler, D. L. Childers, M. Duever

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

δ13C values were determined from cypress tree rings from two different study areas in South Florida. One site is located in the Southeastern Everglades Marsh, where pond cypress (Taxodium ascendens) was sampled from tree islands (annual tree rings from 1970 to 2000). Bald cypress (Taxodium distichum) trees were sampled at the other site, located along the Loxahatchee River in a coastal wetland (decadal tree rings from 1830 to 1990). The isotopic time series from both sites display different, location-specific information. The pond cypress isotopic time series has a positive correlation with the total amount of annual precipitation, while the bald cypress data from the Loxahatchee River study area had two different records dependent on the level of saltwater stress. In general, for terrestrial trees growing in a temperate environment, water stress causes an increase in water-use efficiency (WUE) resulting in a relative 13C enrichment. Yet, trees growing in wetland settings in some cases do not respond in the same manner. We propose a conceptual model based on changes in carbon assimilation and isotopic fractionation as controlled by differences in stomatal resistance (water stress) and mesophyll resistance (biochemical and nutrient related) to explain the isotopic records from both sites. With further work and a longer time series, our approach may be tested, and used to reconstruct change in hydroperiods further back in time, and potentially provide a baseline for wetland restoration.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalDendrochronologia
Volume23
Issue number1
DOIs
StatePublished - Oct 17 2005

Fingerprint

Taxodium distichum
isotopic composition
growth rings
tree ring
time series analysis
wetlands
carbon
time series
water stress
Taxodium distichum var. imbricarium
pond
wetland
temperate environment
isotope fractionation
hydroperiod
rivers
coastal wetland
isotopic fractionation
water use efficiency
saline water

Keywords

  • Rainfall
  • Saltwater stress
  • Stable isotope biogeochemistry

ASJC Scopus subject areas

  • Forestry
  • Plant Science
  • Archaeology
  • Geology
  • Ecology

Cite this

Anderson, W. T., Sternberg, L., Pinzon, M. C., Gann-Troxler, T., Childers, D. L., & Duever, M. (2005). Carbon isotopic composition of cypress trees from South Florida and changing hydrologic conditions. Dendrochronologia, 23(1), 1-10. https://doi.org/10.1016/j.dendro.2005.07.006

Carbon isotopic composition of cypress trees from South Florida and changing hydrologic conditions. / Anderson, W. T.; Sternberg, Leonel; Pinzon, M. C.; Gann-Troxler, T.; Childers, D. L.; Duever, M.

In: Dendrochronologia, Vol. 23, No. 1, 17.10.2005, p. 1-10.

Research output: Contribution to journalArticle

Anderson, WT, Sternberg, L, Pinzon, MC, Gann-Troxler, T, Childers, DL & Duever, M 2005, 'Carbon isotopic composition of cypress trees from South Florida and changing hydrologic conditions', Dendrochronologia, vol. 23, no. 1, pp. 1-10. https://doi.org/10.1016/j.dendro.2005.07.006
Anderson, W. T. ; Sternberg, Leonel ; Pinzon, M. C. ; Gann-Troxler, T. ; Childers, D. L. ; Duever, M. / Carbon isotopic composition of cypress trees from South Florida and changing hydrologic conditions. In: Dendrochronologia. 2005 ; Vol. 23, No. 1. pp. 1-10.
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