CHAPARRAL. DS 
TABLE 2.—Vertical range of chicf chaparral species. 










Observed | Observed 
Species. vertical | Species. vertical 
range. | - Tange. 
Feet. | pemeliCels 
Adenostoma fasciculatum........... 0-8,000 || Fraxinus dipetala................--- 3, 000 
Adenostoma sparsifolium......... Ns 500-5, 000 || Heteromeles arbutifolia......:....-.- 0-4, 600 
Amielianehier almifolia-.......-.....- ZC) || ILOUDS MANNS ~osaccscccosssacecoouee 500-5, 000 
Arctostaphylos glauca..........--... 400-7, 500 || Pickeringia montana.............-.-- 2, 000-5, 000 
Arctostaphylos manzanita.....-.--- LAOS CUO ||| Ierabootos thoniobe .ocosscuacsececostec 0-6, 000 
Arctostaphylos tomentosa........--. 750=50001||*@uercusidensifloras ss. 95225 4524-8 3, 250-5, 000 
Artemlsiaycalitormicaz sss = 2-2 e555. 0=6;,000) ||" Quercusidumiosa-552.2...25-.-.----- 1, 000-7, 300 
Artemisia tridentata................ 2, 100-4, 000 |} Quercus wislizenii...............---- 1, 500-6, 200 
Audibertia polystachya...........-. 1, 000-4, 500 || Rhamnus californica..............-- 0-5, 000 
Ceanothus crassifolius............--- 1,000-6, 000 |} Rhamnus ilicifolia............------ 750-5, 600 
Ceanothusicuneatussseseees seess eee 0-5, 000 || Ribes malvaceum..................- ~ 3,000 
Ceanothus divaricatus.-............. (50=1,,0000| Rib essmemzlesileny s/s 2 .2= Sane 3, 000 
Ceanothus hirsutus............/....- | 100=3s250) | Raibes Speciosumls S222 5252-25555 -5—2 3, 000 
Ceanothus integerrimus......._..--- 2 25,000=5"000) |) Rhusidiversilobas--2--2.45----------. 0-5, 700 
Ceanothus papillosus...........--..- | SOO=GHOCOn | BRUSH unin ase n eee ae se eee eae 0-3, 0CO 
Ceanothus sorediatus............---.] I 200=8 3000 Ri VNUs OMA Lanne ee aee = eee eae 0-5, 000 
Ceanothusispilnosuse- aaseereeeee seas 25 S00 = O00 |) iano walkoripacs ceeooceeodsuoeeococ 2, 000-5, 080 
Cercocarpus ledifolius........---.-.- os o00-SKO0On||SSalvianleucophyillawass sss .s2 ees eee 0-4, 500 
Cercocarpus parvifolius..-..--.-----: (50=65 000) || Salwiasamellitera =a. 2-5. - 22 4545-5 750-3, 250 
Eriodictyon californica........-..--- 500=3; 000) || Sambucus glauca:--....25.5.5.-2.-2.- 5, COO 
Eriodictyon glutinosum..........-..- | 1,000-5, 000 || Symphoricarpus mollis-.........__-- 2, 000-5, 000 
Eriodictyon tomentosum.......----- ea OO0—4O00n |S YuUeCanwihtppleie say. hs see eae eee 0-5, 000 
Eriogonum fasciculatum.........--- | 250-6, 509 
SUBZONES. 
The chaparral zone may be divided into lower, middle, and higher 
subzones, since the character of the chaparral and the species which 
compose it clearly change at certain elevations, on an average at 
2,000 and 5,000 feet. Some of the species peculiar to the lower zone, 
from sea level to 2,000 feet, will occasionally extend into the middle 
zone, and there is a gradual merging of the several species at various 
elevations. Still, these subzones exist. In the Santa Barbara Na- 
tional Forest notes were taken on 116 species, which were found dis- 
tributed as follows: 





Species. 
Only in the lower subzone, 0--2,000 feet_________-___- este awash eve De ah) 
Only in the middle subzone, 2,000-5,000 feet__________ 5ST eas OREN pT igerea ste 38 
Only in the higher subzone, 5,000—8,000 feet_ on oa OD eg iae Nee As Piiteate 2 
In both lower and middle subzones, 0-5,000 feet_________ are Bie pa SBN) 
In both middle and higher subzones, 3,000—-8,000 feet = Pes Raaies Sega 
In the lower, middle, and higher subzones, 0—8,000 feet_____________-____ 11 
116 
From this it may be seen that there are, in the combined lower 
and middle subzones, 106 species, of which 87 are in the middle sub- 
zone. Since this subzone contains the most important cover, its 
range of 3,000 feet was given the most detailed study. 
COMPOSITION OF CHAPARRAL. 
The composition of the chaparral varies with slope, exposure, soil, 
and altitude. This makes it very difficult to estimate accurately over 
a large area the proportion of any given species in the stand. The 
best that can be done is te average a large number of estimates, 
