A Direct Comparison of Sympatric High-Latitude Pinus contorta and Picea albertiana Ring-Width Chronologies

An emerging trend in tree-ring research is use of multiple species for reconstructing paleoclimates, but the possible simultaneous use of boreal-cordilleran species is untested. In this study, ring-width chronologies of sympatric Pinus contorta (lodgepole pine, n = 116 series) and Picea albertiana (western white spruce, n = 348 series) were constructed to assess their temporal (dis)similarities and correlative relationships with meteorological variables. Chronology construction was based on multiple Regional Curve Standardization. Most (97.5%) Pinus chronology values occurred within ±1 SD of their Picea counterparts, but Picea values tended to be slightly less (sign-test, p < 0.001, n = 201). Pinus ring widths were more frequently (16 versus 9) and more strongly correlated (U-test, p < 0.009) with 1942–2013 meteorological variables than Picea. Both species were correlated with moisture variables, but Picea was not correlated with those of temperature. Pinus and Picea ring-width variation was best explained by summer (r = –0.434) and annual (r = –0.426) heat-moisture index values (p < 0.001, n = 72) among tested variables, respectively. Although seldom used, P. contorta appears as suitable as conventionally-used P. albertiana based on chronology similarity, but a greater diversity of significant correlation outcomes suggest Pinus is potentially more useful for boreal-cordilleran paleoclimate reconstruction.

Atmospheric sciences · Biology · Boreal · Botany · Chronology · Climatology · Dendrochronology · Dendroclimatology · Geography · Physical geography · Pinus · Pinus contorta · Taiga · Ecology · Environmental Science · Forestry · Geology · Geology and Paleoclimatology Research · Paleontology · Plant Water Relations and Carbon Dynamics · Tree-ring climate responses

• A ring-width-based reconstruction of June–July minimum temperatures since AD 1245 from white spruce stands in the Mackenzie Delta region, northwestern Canada

  Open Access•Trevor J Porter, Michael Fj Pisaric et al.•Quaternary Research•2013

  Añadir item

• Ecoclimatic Zonation of Yukon (Canada) and Ecoclinal Variation in Vegetation

  Open Access•Wayne L Strong•ARCTIC•2013

  Añadir item

• Range Constraints for Introduced Elk in Southwest Yukon, Canada

  Open Access•Wayne L Strong, Jesse H S Chambers et al.•ARCTIC•2013

  Añadir item

• Episodic and Systematic Tree Ring-Width Variation (AD 1763–2013) in the Takhini Valley, Southwest Yukon, Canada

  Open Access•Wayne L Strong•ARCTIC•2017

  Añadir item

• Semi-arid regions of the boreal zone as demonstrated in the Yukon Basin

  Open Access•Ralph Jatzold•Erdkunde•2000

  Añadir item

• Regional curve standardization

  Open Access•Samuli Helama, Thomas Melvin et al.•The Holocene•2016

  Añadir item

• An Approach toward a Rational Classification of Climate

  Open Access•C W Thornthwaite•Geographical Review•1948

  Añadir item

• A paleoclimatic context for the drought of 1999-2001 in the northern Great Plains of North America

  Open Access•David J Sauchyn, David Sauchyn et al.•Geographical Journal•2003

  Añadir item