Ecological Archives A024-043-A1

J. Mason Earles, Malcolm P. North, Matthew D. Hurteau. 2014. Wildfire and drought dynamics destabilize carbon stores of fire-suppressed forests. Ecological Applications 24:732–740. http://dx.doi.org/10.1890/13-1860.1

Appendix A. A table depicting stand characteristics of modeled mixed-conifer conditions and a figure showing carbon carrying capacity for 24 scenarios examined.

Table A1 describes stand characteristics of the pine-dominated, unthinned, fire-active and fir-dominated, selectively harvested, fire-suppressed stands that were modeled. Stand characteristics include trees per hectare, stand density index (SDI), quadratic mean diameter (QMD), diameter at breast height (DBH) percentile, and percent species composition.

Table A1. Stand characteristics of modeled mixed-conifer conditions.

 

Pine-dominated
fire-active unthinned

Fir-dominated fire-suppressed
selective harvest

Trees per ha

52

397

SDI

286

473

QMD (cm)

41.9

16.3

DBH Percentile (cm)

   

10th

23.4

5.8

30th

35.3

8.4

50th

42.2

9.9

70th

47.5

16.0

90th

53.3

26.2

100th

64.0

73.9

Species Composition

   

Ponderosa Pine

95%

--

Douglas Fir

5%

--

White Fir

--

95%

Black Oak

--

5%

 

Figure A1 shows 50th, 25th/75th, and 5th /95th percentiles of CCC values for pine- and fir-dominated stands across various combinations of fire frequency, drought frequency, and drought mortality response.

FigA1

Fig. A1. Carbon carrying capacity (CCC) for twenty-four scenarios examined. H = high, M = medium, L = low. Fir-dominated stand, white boxplots. Pine-dominated stand, purple boxplots. Dots represent median amount of live biomass for fir-dominated (gray) and pine-dominated (purple) stands. Box plots show 50th, 25th/75th, and 5th /95th percentiles.


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