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Photosynthetic capacity of red spruce during winterAuthor(s): P.G. Schaberg; J.B. Shane; P.F. Cali; J.R. Donnelly; G.R. Strimbeck
Source: Tree Physiology. 18. 271-276.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
PDF: Download Publication (204.61 KB)
DescriptionWe measured the photosynthetic capacity (Pmax) of plantation-grown red spruce (Picea rubens Sarg.) during two winter seasons (1993-94 and 1994-95) and monitored field photosynthesis of these trees during one winter (1993-94). We also measured Pmax for mature montane trees from January through May 1995. Changes in Pmax and field photosynthesis closely paralleled seasonal changes in outdoor air temperature. However, during thaw periods, field photosynthesis was closely correlated with multiple-day temperature regimes, whereas Pmax was closely correlated with single-day fluctuations in temperature.
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CitationSchaberg, P.G.; Shane, J.B.; Cali, P.F.; Donnelly, J.R.; Strimbeck, G.R. 1998. Photosynthetic capacity of red spruce during winter. Tree Physiology. 18. 271-276.
Keywordsphotosynthesis, Picea rubens, temperature, winter thaw
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