Ecological Archives A022-102-A1

Arjan J. H. Meddens, Jeffrey A. Hicke, and Charles A. Ferguson. 2012. Spatiotemporal patterns of observed bark beetle-caused tree mortality in British Columbia and the western United States. Ecological Applications 22:1876–1891. http://dx.doi.org/10.1890/11-1785.1

Appendix A (Table A1). Mean diameter breast height (dbh) (cm), crown radius (m), and crown area (m2) of tree species present in the aerial detection survey (ADS) gridding. Standard deviation is given in parentheses where available. Source: all canopy trees greater than 12.7 cm dbh (5 inches) of the 1992–1999 USDA Forest Service Forest Health Monitoring program plots in western U.S. states (http://www.fia.fs.fed.us; accessed 14 April 2011).

  Tree species Mean DBH a
(SD) (cm)
Crown radius
(SD) (m)
Crown area
(SD) (m2)
N
Pine 1 bristlecone pine 27.4 (10.4) 2.57 (0.86) 22.88 (15.68) 9
2 common piñon 24.9 (9.4) 1.99 (0.64) 13.73 (9.13) 482
3 Jeffrey pine 54.4 (33.5) 3.27 (1.72) 42.61 (49.31) 42
4 limber pine 24.5 (9.2) 1.95 (0.69) 13.46 (9.67) 85
5 lodgepole pine 22.7 (8.8) 1.53 (0.65) 8.68 (8.50) 1847
6 ponderosa pine 29.95 (14.8) 2.13 (0.91) 16.78 (15.09) 932
7 western white pine 38.6 (21.5) 2.21 (1.02) 18.61 (18.73) 46
8 whitebark pine 27.14 (13.7) 1.69 (0.91) 11.49 (15.16) 76
9 singleleaf piñon 25.5 (9.3) 1.81 (0.68) 11.74 (9.09) 669
Fir 1 California red fir 59.3 (29.1) 2.50 (0.99) 22.72 (17.28) 57
2 corkbark fir 19.9 (6.4) 1.52 (0.97) 10.08 (24.65) 40
3 subalpine fir 24.9 (9.2) 1.55 (0.54) 8.42 (6.44) 732
4 white fir 36.3 (20.4) 2.15 (11.03) 15.97 (11.03) 399
Spruce 1 Engelmann spruce 28.7 (12.3) 1.67 (0.61) 9.88 (7.87) 858
Other 1 Douglas-fir 33.7 (18.2) 2.61 (0.97)) 24.28 (19.89) 2677
2 fir species b 30.0 1.60 11.59  
3 no data c 28.9 2.03 15.50  
4 softwoods c 28.9 2.03 15.50  
5 spruce species d 28.7 (12.3) 1.67 (0.61) 9.88 (7.87) 858

a Diameter at breast height except for piñon pine species that were measured at root collar.
b Weighted average (by number of trees) of all fir species.
c Weighted average (by number of trees) of all species.
d Engelmann spruce values.


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