Vascular Plant and Vertebrate Inventory of Saguaro ... - USGS
Vascular Plant and Vertebrate Inventory of Saguaro ... - USGS
Vascular Plant and Vertebrate Inventory of Saguaro ... - USGS
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Table 4.8. Relative abundance (mean + SE; no./10 hrs) <strong>of</strong> herpet<strong>of</strong>auna detected during extensive surveys<br />
(n = 85), by elevation strata, <strong>Saguaro</strong> National Park, Rincon Mountain District, 2001 <strong>and</strong> 2002. Parenthetical<br />
numbers are sample sizes for number <strong>of</strong> survey areas.<br />
Low (n = 50)<br />
Elevation stratum<br />
Middle (n = 23) High (n = 12)<br />
All (n = 85)<br />
Species mean SE mean SE mean SE mean SE<br />
Couch’s spadefoot 1.36 1.06 0.80 0.63<br />
Sonoran Desert toad 4.97 2.19 2.92 1.31<br />
red-spotted toad 1.90 0.86 0.10 0.10 1.13 0.52<br />
canyon treefrog 2.50 0.53 11.15 5.83 4.29 3.28 5.10 1.69<br />
lowl<strong>and</strong> leopard frog 1.80 1.04 0.33 0.33 1.15 0.62<br />
Sonoran mud turtle 0.91 0.42 0.84 0.48 0.76 0.28<br />
desert tortoise 0.53 0.20 0.35 0.26 0.41 0.14<br />
western b<strong>and</strong>ed gecko 0.39 0.15 0.23 0.09<br />
eastern collared lizard 0.10 0.07 0.26 0.26 0.13 0.08<br />
lesser earless lizard 0.10 0.08 0.06 0.05<br />
greater earless lizard 1.43 0.35 0.35 0.26 0.94 0.23<br />
zebra-tailed lizard 2.29 1.14 1.35 0.68<br />
desert spiny lizard 0.87 0.27 0.51 0.17<br />
Clark’s spiny lizard 4.59 0.87 3.41 1.27 0.33 0.33 3.67 0.63<br />
eastern fence lizard 4.16 1.54 6.20 2.37 2.00 0.59<br />
common side-blotched lizard 3.94 1.22 2.32 0.75<br />
ornate tree lizard 10.03 2.61 10.47 2.33 1.65 0.95 8.96 1.69<br />
greater short-horned lizard 0.44 0.30 0.06 0.04<br />
regal horned lizard 0.15 0.11 0.09 0.06<br />
Great Plains skink 0.04 0.04 0.02 0.02<br />
unknown whiptail 1.25 0.48 1.08 0.39 1.03 0.30<br />
Sonoran spotted whiptail 3.40 1.40 1.38 0.61 2.37 0.85<br />
Gila spotted whiptail 0.26 0.13 1.36 0.92 0.42 0.28 0.58 0.26<br />
western whiptail 1.44 0.68 0.84 0.41<br />
Madrean alligator lizard 0.03 0.03 0.52 0.37 0.08 0.05<br />
Gila monster 0.57 0.25 0.33 0.15<br />
coachwhip 0.21 0.12 0.12 0.07<br />
Sonoran whipsnake 0.15 0.08 0.17 0.17 0.13 0.07<br />
western patch-nosed snake 0.04 0.04 0.02 0.02<br />
mountain patch-nosed snake 0.04 0.04 0.02 0.02<br />
gopher snake 0.07 0.05 0.11 0.11 0.06 0.03<br />
common kingsnake 0.02 0.02 0.01 0.01<br />
Sonoran mountain kingsnake 0.08 0.08 0.33 0.33 0.07 0.05<br />
long-nosed snake 0.08 0.05 0.05 0.03<br />
black-necked garter snake 2.85 1.38 1.77 0.76 0.19 0.19 2.18 0.84<br />
Sonoran coral snake 0.03 0.03 0.02 0.02<br />
western diamond-backed rattlesnake 1.62 0.41 0.95 0.26<br />
black-tailed rattlesnake 0.23 0.12 0.64 0.29 0.32 0.32 0.36 0.12<br />
tiger rattlesnake 0.62 0.22 0.36 0.14<br />
western rattlesnake 0.03 0.03 0.56 0.24 0.77 0.66 0.28 0.12<br />
all individuals 53.73 6.05 39.80 7.69 15.89 4.22 44.62 4.37<br />
species richness 34.00 18.00 13.00 39.00<br />
did vary for lizards (F 2,47 = 14.6, P < 0.0001,<br />
ANOVA), with 2.3 times more species detected<br />
during day (4.8 ± 0.4) than other periods.<br />
Relative abundance <strong>of</strong> amphibians<br />
increased by 1.2 ± 0.6 individuals/10 hours with<br />
each 10% increase in cloud cover after adjusting<br />
37<br />
for the influence <strong>of</strong> survey time (t 79 = 1.96, P =<br />
0.054, test <strong>of</strong> slope from regression). In contrast,<br />
relative abundance <strong>of</strong> lizards decreased by 2.2 ±<br />
0.7 individuals/10 hours with each 10% increase<br />
in cloud cover after adjusting for survey time <strong>and</strong><br />
elevation (t 77 = 3.21, P = 0.0019) but did not vary