comnxin snowberry {Sijmphort(jarpos aVbiu'), creambush oceanspray {Holodiscun dtsaolor) , 

 elderberry {Samhucus spp.), mountain alder {Mnus inoana) , ninebark, quaking aspen 

 {Populur, ircmuloides) , red-osier dogwood [Cornus stolonifera) , redstem ceanothus 

 {Cc.anothus sanguineus). Rocky Mountain maple {Acer glabrum) , syringia {Philadelphus 

 Icuiaii) , thimbleberry {Fhdms parvi f torus ) , western serviceberry [Amelanchier alnifolia), 

 and willow (Salix spp.). Much of the more densely forested portion of the plot south 

 of the railroad tracks has little or no ground cover, and the soil in these areas is 

 covered with a mat of needles and with scattered logs and branches. A quantitative 

 survey of the vegetation gave the following results: trees, 3 in. (= 7.6 cm) 

 diameter and over, based on five 0.1 acre (=0.04 hal circular samples, 2421/ha 

 (= 980/acre); total basal area 37 m^/ha (= 160.1 ft /acre). Species of trees (figures , 

 after each give number of trees/ha, number of trees/acre, relative density (%), 

 relative dominance, and frequency, in that sequence): Douglas fir 760, 338, 34, 48, 

 100; western larch 716, 318, 32, 27, 100; western red cedar 414, 184, 19, 13, 80; 

 lodgepole pine [Pinus aontorta) 86, 38, 4, 5, 40; water birch [Betula oceidentalis) 

 158, 70, 7, 3, 80; Rocky Mountain maple {Acer glabrum) 9, 4, tr (= trace, or less 

 than 0.5%), tr, 20; ponderosa pine {Pinus ponderosa) 5, 2, tr, tr, 20; Rocky Mountain 

 juniper [Juniperus saopulorim) 5, 2, tr, tr, 20. A few small Engelmann spruce {Picea 

 cngclmannii) , western hemlock [Tsuga heterophylla) and grand fir [Abies grandis) 

 were also found in the plot. Trees by diameter size class (figures after each class 

 given number of trees/ha, number of trees/acre, relative density (%), basal area in 

 m^/ha, basal area in ff^/acre, relative dominance): A(8-15 cm = 3-6 in) 1278, 568, 

 58, 13.0, 56.8, 18; B(15-23 cm = 6-9 in) 540, 240, 24, 16.5, 72.0, 22; C(23-78 cm = 

 9-15 in) 315, 140,14, 65.7, 112.0, 35; 0(38-53 cm = 15-27 in) 41, 18, 2, 7.4, 32.4, 

 10; E(53-69 cm = 21-27 in) 27, 12, 1, 8.5, 37.2, 12; F(69-84 cm = 27-33 irTTS, 2, tr, 

 2.3, 9.8, 3. Shrub stems/ha, 5265; shrub stems/acre, 2340; ground cover 26%; canopy 

 cover 66%; average canopy height 22 m = 72 feet (range 18-30 m = 60-100 feet). Plant 

 names follow Hitchcock and Cronquist's (1973) Flora of the Pacific Northwest . Edge: 

 bordered on the north by the steep north bank of the Kootenai River and the slopes 

 of the Purcell Mountains, characterized near the plot by Douglas fir/ninebark 

 forests and relatively dry rocky outcrops; bordered to the south by U.S. Highway 2 

 south of which rise the lower slopes of the Cabinet Mountains, characterized near 

 the plot by the relatively moist western red cedar/queencup beadlily and western 

 hemlock/queencup beadlily habitat types. A steep, rocky cliff rises above the high- 

 way just south of the western third of the plot. Weather: the spring of 1978 was 

 relatively moist and followed a severe winter; plant phenology was thus several days 

 behind the normal. Rain was occasionally experienced during census runs, but 

 weather for the most part was clear to cloudy and dry. Coverage: May 7, 8, 9, 22, 

 25; June 5, 6, 7, 8, 9, 29, 30. All trips between 0515 and 2130 hours. Total 

 person-hours: 34.6. Census: violet-green swallow, 12(27, 11); yellow-rumped 

 warbler, 7 (16, 6); golden-crowned kinglet, 6(13, 5); Swainson's thrush, 5.5 (12, 5); 

 Townsend's warbler, 5.5 (12, 5); American robin, 4.5 (10, 4); yellow warbler, 4.5 

 (10, 4); dark-eyed junco, 4.5 (10, 4); rough-winged swallow, 4 (9, 4); dipper, 4 

 (9, 4); red-eyed vireo, 4(9,4); black-capped chickadee, 3.5 (8, 3); song sparrow, 

 3.5 (8, 3); mallard, 2; warbling vireo, 2; Nashville warbler, 2; MacGillivray 's - 



warbler, 2; American redstart, 2; brown-headed cowbird, 2; pine siskin, 2; spotted 

 sandpiper, 1.5; harlequin duck, 1; American kestrel, 1; common flicker, 1; Empidonax 

 flycatcher (Hammond's or Dusky), 1; tree swallow, 1; common crow, 1; western tanager, 

 1; common goldeneye, +; common merganser, +; osprey, +; common raven, +; varied 

 thrush, +. Total: 33 species, 91 territorial males or females (205/km^, 83 per 

 100 acres). Visitors: Canada goose, American wigeon, Barrow's goldeneye, mourning 

 dove, rufous hummingbird, calliope hummingbird, belted kingfisher, hairy woodpecker, 

 willow flycatcher, Townsend's solitaire, cedar waxwing, orange-crowned warbler, 

 lazuli bunting, Lincoln's sparrow. Remarks: Five nests were located: common 



48 



