Objectives: We collected tree cores from red spruce trees at a red spruce plantation in northern NH and 23 forested plots (MA, NH, and VT) to assess the reductions in carbon sequestration that followed a severe winter injury event and explore the possible causes of this event.
Principal Investigator: Paul Schaberg, Gary Hawley, and Brynne Lazarus
Laboratory: Schaberg/Hawley Lab
Recommended Citation: Schaberg PG, Lazarus BE, Hawley GJ, Halman JM, Borer CH ,and Hansen CF. 2005. Red spruce tree ring data from New England and New York.
Project Contents: Data for 24 Plots, 241 Trees, 483 Cores
Project Period: 2004-01-01 to 2007-01-01
Data License: What's this?
Description: We sought to investigate the environmental factors that may contribute to red spruce foliar winter injury and how much this injury influences tree carbon stores. We used a long-term record of winter injury in a plantation in New Hampshire and at 23 forested plots (in MA, NH, and VT) and conducted stepwise linear regression analyses with local weather and regional pollution data to determine which parameters helped account for observed injury.
- Schaberg, P. G., Lazarus, B. E., Hawley, G. J., Halman, J. M., Borer, C. H., and Hansen, C. F. 2011. Assessment of weather-associated causes of red spruce winter injury and consequences to aboveground View
Taxonomic standard used: USDA Plants Database
How plots were selected: Plots were selected from the Colbrook plantation (NH) and from the broader forested landscape in NH, VT, and MA.
How trees were selected: Xylem increment cores were collected for trees in the Colebrook plantation (November 2004) and the 23 regional winter injury assessment plots (October and November 2005). Colebrook plantation cores were collected on a subset of 88 trees. Two trees from each of four northern provenances in the plantation (New Hampshire, New York, and Maine, USA, and Quebec, Canada) were randomly chosen for sampling from each of the 11 winter injury classes (0–10). For the regional survey, a subset of 10 locations and 23 plots (from the 27 locations and 176 plots assessed by Lazarus et al. 2004) were chosen to include at least one and as many as three sites with average winter injury levels representing all but one of the 11 winter injury categories measured in 2003 (from 0 through 10).
Exclusion of trees (if any): Trees with obvious deformities were excluded.
How cores were collected: Two cores positioned at 180° from each other were collected from trees parallel to the contours of plot slopes.
How cores were processed: Cores were mounted and sanded and annual xylem increments were microscopically measured (Stokes and Smiley 1968). Following measurement, cores were crossdated and basal area increment was calculated (Cook and Kairiukstis 1990).
Exclusion of cores (if any): No cores were excluded.
Added to the database: 05/08/2018
Last modified: 03/04/2022