9307 ‎(2)‎

• UCREFRP Catalog Number: 9307
• Author: Germaine, S. S.
• Title: Relationships of Birds, Lizards, and Nocturnal Rodents to Their Habitat in the Greater Tucson Area, Arizona.
• USFW Year: 1995.
• USFW - Doc Type: Phoenix, AZ.
• Copyright Material: NO

RELATIONSHIPS OF BIRDS, LIZARDS, AND NOCTURNAL RODENTS TO THEIR HABITAT IN TUCSON, ARIZONA
instead of the MSE when assessing the potential
error in the predictive ability of this model in the
future. This difference was only slight, however,
and there was no difference between the slopes of
the predictive and predicted models (P = 0.902).
Species richness for the native breeding bird
indicator guild (INDG) was positively correlated
with percent area upper Sonoran vegetation and
undisturbed washes, and negatively correlated
with house density and percent area of: paved or
graded land; urban, open, non-native vegetation
cover; and the 3 distance measures. The best
predictive equation for indicator guild included
house density, percent area paved or graded,
percent area urban, open, non-native vegetation
cover, and percent area upper Sonoran vegetation:
R = 1.359 - 0.219(HDEN) + 0.211(LTROM) +
0.185(RIPU).
This model (F = 7.65; df = 4, 118; P <0.001),
had a multiple correlation coefficient of 0.54, and
explained 21% of the variation in lizard species
richness.
INDG = 1.584 - 0.200(HDEN) - 0.010(PCTP) -
0.008(UROE) + 0.003(LJSV}.
This model (F = 119.93; df = 4, 316; P < 0.000),
had a multiple correlation coefficient of 0.78, and
explained 60% of the variation in indicator guild.
Cross validation revealed that the MSPR (0.246)
was smaller than the MSE (0.495), indicating that
this model gives an unbiased estimation of it's
predictive ability. Again, there was no difference
between the slopes of the predictor and the test
data sets (P = 0.148).
Lizards. Lizard community total abundance
(1~ was negatively correlated with house density,
and urban-open exotic vegetation (Table 6). Total
abundance was positively correlated with percent
area lower Sonoran vegetation and undisturbed
wash cover. The best predictive regression
equation incorporated lower Sonoran vegetation
and undisturbed riparian:
N = 1.175 + 0.022(LSV) + 0.047(RIPU).
This model (F = 22.01; df = 3, 119; P <0.001),
had a multiple correlation coefficient of 0.60, and
explained 36% of the total variation in lizard
community abundance.
Lizard species richness (R) was weakly
correlated with 4 habitat variables (Table 6).
Species richness correlated negatively with house
density, and urban-open exotic vegetation. Species
richness correlated positively with percent area
mixed urban open cover, and undisturbed
riparian. The best predictive equation for lizard
species richness included house density, urban-
open mixed vegetation, and undisturbed riparian:
STEPHEN S GERMAINE 1995 ARIZONA GAME ~r FISH DEPARTMENT, TECH. REP. 20 27