Mojave Desert Tortoise (Gopherus agassizii) Morphometrics and Egg Data from Seven Sites across the Mojave, (1997-2002)

These data were acquired from 7 study sites distributed across the range of Gopherus agassizii. Data were collected from 1997 to 2002 as part of three separate studies, although data were not collected at all sites in each year. Radio-transmitters were attached to the carapace of 151 females and VHF radio-telemetry was used to relocate animals to assess reproductive status. Egg production was determined from X-radiographs taken weekly/biweekly intervals (depending on the study) using a portable X-ray machine between April and July or August of each year. In addition, the mean carapace length (MCL) of each tortoise was measured at each time of capture or recapture using calipers (mm). A nesting event was recorded...

Categories: Data; Tags: Area 31, Bird Spring Valley, California, Gopherus agassizii, Lake Mead National Recreation Area, All tags... Mojave Desert, Mojave National Preserve, Mojave desert tortoise, Nevada, Pahcoon Flat, Piute Valley, Redcliffs, Sandstone Mountain, USGS Science Data Catalog (SDC), Utah, Wildlife Biology, X-radiography, biological production, biota, body size, climate change, climatic variability, climatic variation, clutch size, ecology, ecosystem functions, eggs, environmental effects, environmental variables, field inventory and monitoring, radiography, reproduction, reproductive output, reproductive status, reptile, reptiles, size, tortoises, total annual egg production, wildlife, wildlife biology, Fewer tags

Agassiz's desert tortoise and egg data from the Sonoran Desert of California (1997-2000, 2015-2018)

These data were compiled to evaluate reproductive output of Agassiz's desert tortoises (Gopherus agassizzi) in relation to environmental and individual-level variables. We collected data from four study sites in the Sonoran Desert of California, including two separate populations within Joshua Tree National Park, one population located on the northern versant of the Orocopia Mountains, and one population located at the extreme western end of the Coachella Valley. These data represent eight reproductive seasons that spanned over 20 years (1997-2000, 2015-2018). These data were compiled and added to a larger database with additional records collected by other scientists from eight other study sites in order to detect...

Tags: Agassiz's desert tortoise, Barrow Plot, California, Cottonwood Mountains, Ecology, All tags... Geography, Gopherus agassizii, Information Sciences, Joshua Tree National Park, Joshua Tree Wilderness, Mesa, Mesa Wind Farm, Orocopia Mountains, San Gorgonio Pass, Shavers Valley, Sonoran Desert, USGS Science Data Catalog (SDC), Wildlife Biology, X-radiography, biological production, biota, body size, climate change, climatic variability, climatic variation, clutch size, ecology, ecosystem functions, eggs, environmental effects, environmental variables, field inventory and monitoring, radiography, reproduction, reproductive output, reproductive status, reptiles, size, tortoises, total annual egg production, wildlife, wildlife biology, Fewer tags