Riverside
Desert Iguana (Dipsosaurus dorsalis)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | g/d | Not Reported | Hatchling | 5 - 52/sampling time | Thousand Palms | Exposure Factor Datasets | Riverside | ||
| Time of Torpor or Hibernation | Oct. - Mar. | Not Reported | Not Reported | Not Reported | Thousand Palms | Exposure Factor Datasets | Riverside | ||
| Time of Hatching or Parturition | Aug. | Not Reported | Hatchling | Not Reported | Thousand Palms | Exposure Factor Datasets | Riverside | ||
| Dietary Composition | Plant Species: Ambrosia dumosa (4.8%); Coldenia palmeri (27.6%); Croton californica (2.8%); Dalea emoryi (24.7%); Dalea schottii (13.2%); Dicoria canescens (22.5%); Arthropods (1.3%); Rodent feces (2.4%); Gravel (0.6%) | mean % of total dry matter stomach contents | % | Not Reported | Adult | 7 | Thousand Palms | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | range of averages for 3 sites | g | Male | Adult | Not Reported | Coachella Valley | Exposure Factor Datasets | Riverside |
| Body Weight - Mean | range of averages for 3 sites | g | Female | Adult | Not Reported | Coachella Valley | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|
| Population Density | 450 | #/ha | Not Reported | Both Adults and Juveniles | 45 lizards/10 quadrants (100m2) | Thousand Palms | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Clutches or Litters per year | 1 | clutch/yr | Female | Adult | Not Reported | Dale Dry Lake, Palm Springs and Algodones Dunes | Exposure Factor Datasets | Imperial, Riverside, San Bernardino | |
| Clutch or Litter Size | based on eggs in oviduct | eggs/clutch | Female | Adult | Not Reported | Dale Dry Lake, Palm Springs and Algodones Dunes | Exposure Factor Datasets | Imperial, Riverside, San Bernardino | |
| Duration of Incubation or Gestation | 75 | time from egg to hatching | d | Not Reported | Hatchling | Not Reported | Dale Dry Lake, Palm Springs and Algodones Dunes | Exposure Factor Datasets | Imperial, Riverside, San Bernardino |
| Time of Hatching or Parturition | Aug. | Not Reported | Hatchling | Not Reported | Dale Dry Lake, Palm Springs and Algodones Dunes | Exposure Factor Datasets | Imperial, Riverside, San Bernardino |
| Exposure Endpoint Type | Endpoint Value | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | Age-Specific | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Weight - Mean | 9.2 | g | Not Reported | Juvenile | 65 | Thousand Palms | Exposure Factor Datasets | 7-8 mo | Riverside | 2.1 SD |
| Body Weight - Mean | 29.2 | g | Not Reported | Juvenile | 25 | Thousand Palms | Exposure Factor Datasets | 19-20 mo | Riverside | 8.6 SD |
Stephens' Kangaroo Rat (Dipodomys stephensi)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Growth Rate | 19.00 (20-29g); 8.82 (30-39g); 8.80 (40-49g); 0.94 (60-69g) | mass specific growth rates pooled by sex and site expressed as change in body mass per mo for 4 weight classes (20-69g) | g/mo | Both Male and Female | Not Reported | 1-125/site and sex | Motte Rimrock Reserve and San Jacinto Wildlife Area | Exposure Factor Datasets | Riverside |
| Age at Sexual Maturity | 3 | mo | Female | Adult | Not Reported | Motte Rimrock Reserve and San Jacinto Wildlife Area | Exposure Factor Datasets | Riverside | |
| Population Density | see citation | figure of monthly population densities at two sites | #/ha | Both Male and Female | Not Reported | Not Reported | Motte Rimrock Reserve and San Jacinto Wildlife Area | Exposure Factor Datasets | Riverside |
| Clutches or Litters per year | range over 2 yrs | litters/yr | Female | Adult | 8-14/yr | Motte Rimrock Reserve and San Jacinto Wildlife Area | Exposure Factor Datasets | Riverside | |
| Clutch or Litter Size | 2.67 | young/litter | Female | Adult | 6 | Motte Rimrock Reserve and San Jacinto Wildlife Area | Exposure Factor Datasets | Riverside |
| Exposure Endpoint Type | Endpoint Description | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|
| Survival/ Mortality | range of minimum rate of survival of individuals in the trappable population per mo, measured over 19 mo at 3 sites | Both Male and Female | Adult | 110-234 | Lake Mathews [lat., 33^o50'N; long., 117^o27'30"W]; Motte Rimrock Reserve [lat., 33^o47'30"N; long., 117^o15'W] and San Jacinto Wildlife Area [lat., 33^o52'N; long., 117^o7'15"W] | Exposure Factor Datasets | Riverside |
Coachella Valley Fringe-toed Lizard (Uma inornata)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties | Error |
|---|---|---|---|---|---|---|---|---|---|---|
| Home Range | 437 | average home range estimated using minimum convex polygon method (snout-vent length, 70+mm) | m2 | Female | Adult | 37 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside | 168 (95CI) |
| Home Range | 146 | average home range estimated using minimum convex polygon method (snout-vent length, 51-69mm) | m2 | Female | Juvenile | 15 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside | 56 (95CI) |
| Home Range | 45 | average home range estimated using minimum convex polygon method (snout-vent length,0-50mm) | m2 | Female | Hatchling | 11 | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside | 11 (95CI) |
| Time of Torpor or Hibernation | Nov. - Mar. | Not Reported | Not Reported | Not Reported | Whitewater Floodplain Reserve, Palm Springs | Exposure Factor Datasets | Riverside |
Merriam's Kangaroo Rat (Dipodomys merriami)
| Exposure Endpoint Type | Endpoint Value | Endpoint Description | Units | Sex | Life Cycle Stage | Sample Size | Location | Type | California Counties |
|---|---|---|---|---|---|---|---|---|---|
| Home Range | range of mean home range in 3 study periods estimated by radiotelemetry | ha | Female | Adult | 7-10 | Boyde Deep Canyon Reserve (elev., 300m) | Exposure Factor Datasets | Riverside | |
| Home Range | range of mean home range in 3 study periods estimated by radiotelemetry | ha | Male | Adult | 8-11 | Boyde Deep Canyon Reserve (elev., 300m) | Exposure Factor Datasets | Riverside | |
| Population Density | 6 | #/ha | Both Male and Female | Adult | Not Reported | Boyde Deep Canyon Reserve (elev., 300m) | Exposure Factor Datasets | Riverside |
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