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Table 1 Environmental and physical characteristics of study sites. The PIPO group is the ponderosa pine group, and the ABGR group is the grand fir group. ELGL = Elymus glaucus Buckley; CARU = Calamagrostis rubescens Buckley; CAGE2 = Carex geyeri Boott; and LIBO3 = Linnaea borealis L. PAG is plant association group, which describes the relative temperature and moisture regime of sites (Powell et al. 2007). ABGR 1890 % refers to grand fir as a proportion of total reconstructed basal area in the year 1890. Sites ranged in size from 4 ha to 12 ha. Variables were calculated as the average of values for 15 systematically located plots in each site.

From: Historical Fire-Climate Relationships in Contrasting Interior Pacific Northwest Forest Types

Site Longitude W Latitude N Group Dominant plant association Dominant PAG ABGR 1890 % MFRI Elevation (m) Aspect Slope (%)
Thompson 118°58′42″ 44°31′16″ PIPO PIPO-ELGL Hot-dry 0 14.9 1248 NW 9
North Fork 118°23′10″ 44°11′53″ PIPO PIPO-CARU Warm-dry 0 10.6 1490 E 10
Myrtle 119°5′23″ 43°56′48″ PIPO PIPO-CAGE2 Warm-dry 0 10.7 1641 W 15
Stink 118°22′32″ 44°12′17″ PIPO PSME-CARU Warm-dry 0 13.1 1550 NW 18
Malheur 118°34′44″ 44°4′56″ PIPO PSME-CARU Warm-dry 0 11.0 1497 E 17
Reynolds 118°29′39″ 44°25′34″ PIPO ABGR-CAGE2 Warm-dry 0 18.0 1588 SW 26
Lake 118°38′33″ 44°13′1″ PIPO ABGR-CAGE2 Warm-dry 1 18.4 1619 NA 0
Canyon 118°53′39″ 44°16′43″ PIPO ABGR-CAGE2 Warm-dry 1 18.3 1545 SE 20
Crane 118°28′49″ 44°6′17″ ABGR ABGR-CARU Warm-dry 24 15.8 1863 NW 9
Dry Cabin 119°24′2″ 44°21′1″ ABGR ABGR-CAGE2 Warm-dry 38 19.2 1785 NW 15
Jugow 118°57′37″ 44° 34′48″ ABGR ABGR-LIBO3 Cool-moist 28 11.8 1730 NW 5
Deerborn 118°34′25″ 44°35′22″ ABGR ABGR-LIBO3 Cool-moist 46 21.2 1460 NE 11
Mosquito 118°46′59″ 44°45′47″ ABGR ABGR-LIBO3 Cool-moist 24 to 461 18.0 1366 NE 20
  1. 1 These coverages were estimated from an opportunistic sample of only 23 old (>150 yr) trees because of time and funding constraints.