Photosynthetic capacity of red spruce during winter

P.G. Schaberg; J.B. Shane; P.F. Cali; J.R. Donnelly; G.R. Strimbeck

U.S. Forest Service

Publication Details

Photosynthetic capacity of red spruce during winter

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Schaberg, P.G.; Shane, J.B.; Cali, P.F.; Donnelly, J.R.; Strimbeck, G.R.

Year Published

1998

Publication

Tree Physiology. 18. 271-276.

Abstract

We measured the photosynthetic capacity (P_max) 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 P_max for mature montane trees from January through May 1995. Changes in P_max 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 P_max was closely correlated with single-day fluctuations in temperature.

Keywords

photosynthesis, Picea rubens, temperature, winter thaw

Citation

Schaberg, 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.

Last updated on: July 30, 2008