Development of the mixed conifer forest in northern New Mexico and its relationship to Holocene environmental change

Scott R Anderson, Renata B. Jass, Jaime L. Toney, Craig D. Allen, Luz M. Cisneros-Dozal, Marcey Hess, Jeff Heikoop, Julianna Fessenden

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Chihuahueños Bog (2925 m) in the Jemez Mountains of northern New Mexico contains one of the few records of late-glacial and postglacial development of the mixed conifer forest in southwestern North America. The Chihuahueños Bog record extends to over 15,000 cal yr BP. An Artemisia steppe, then an open Picea woodland grew around a small pond until ca. 11,700 cal yr BP when Pinus ponderosa became established. C/N ratios, δ13C and δ15N values indicate both terrestrial and aquatic organic matter was incorporated into the sediment. Higher percentages of aquatic algae and elevated C/N ratios indicate higher lake levels at the opening of the Holocene, but a wetland developed subsequently as climate warmed. From ca. 8500 to 6400 cal yr BP the pond desiccated in what must have been the driest period of the Holocene there. C/N ratios declined to their lowest Holocene levels, indicating intense decomposition in the sediment. Wetter conditions returned after 6400 cal yr BP, with conversion of the site to a sedge bog as groundwater levels rose. Higher charcoal influx rates after 6400 cal yr BP probably result from greater biomass production rates. Only minor shifts in the overstory species occurred during the Holocene, suggesting that mixed conifer forest dominated throughout the record.

Original languageEnglish (US)
Pages (from-to)263-275
Number of pages13
JournalQuaternary Research
Volume69
Issue number2
DOIs
StatePublished - Mar 2008

Fingerprint

coniferous tree
environmental change
bog
Holocene
pond
sedge
overstory
late glacial
lake level
steppe
charcoal
Postglacial
sediment
woodland
alga
wetland
decomposition
organic matter
mountain
groundwater

Keywords

  • Charcoal analysis
  • Isotope analysis
  • New Mexico
  • Paleoecology
  • Pollen analysis

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Earth and Planetary Sciences(all)

Cite this

Development of the mixed conifer forest in northern New Mexico and its relationship to Holocene environmental change. / Anderson, Scott R; Jass, Renata B.; Toney, Jaime L.; Allen, Craig D.; Cisneros-Dozal, Luz M.; Hess, Marcey; Heikoop, Jeff; Fessenden, Julianna.

In: Quaternary Research, Vol. 69, No. 2, 03.2008, p. 263-275.

Research output: Contribution to journalArticle

Anderson, SR, Jass, RB, Toney, JL, Allen, CD, Cisneros-Dozal, LM, Hess, M, Heikoop, J & Fessenden, J 2008, 'Development of the mixed conifer forest in northern New Mexico and its relationship to Holocene environmental change', Quaternary Research, vol. 69, no. 2, pp. 263-275. https://doi.org/10.1016/j.yqres.2007.12.002
Anderson, Scott R ; Jass, Renata B. ; Toney, Jaime L. ; Allen, Craig D. ; Cisneros-Dozal, Luz M. ; Hess, Marcey ; Heikoop, Jeff ; Fessenden, Julianna. / Development of the mixed conifer forest in northern New Mexico and its relationship to Holocene environmental change. In: Quaternary Research. 2008 ; Vol. 69, No. 2. pp. 263-275.
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