Results 41 to 50 of about 379 (150)
Habitat use by female desert tortoises suggests tradeoffs between resource use and risk avoidance.
PLoS ONE, 2022 Animals may select habitat to maximize the benefits of foraging on growth and reproduction, while balancing competing factors like the risk of predation or mortality from other sources.
Melia G Nafus +5 more
doaj +1 more source
Conservation Science and Practice, 2022 Subsidization of predator populations increases predation pressure on prey species, which is exacerbated when natural resources are scarce. Estimating the frequency of predation by subsidized predators on vulnerable species, especially low‐density, long ...
Lillian D. Parker +9 more
doaj +1 more source
Endangered Species Research, 2020 We measured survival, growth, and body condition of 8 hatchling cohorts of desert tortoises Gopherus agassizii (living in predator-resistant outdoor pens in the Mojave Desert, California, USA) over 11 yr to evaluate head-starting methods. At 11 yr of age,
Nagy, KA, Henen, BT, Hillard, LS
doaj +1 more source
Endangered Species Research, 2023 We conducted population surveys for desert tortoises Gopherus agassizii at 2 nearby sites in the western Sonoran Desert of California, USA, from 2015-2018, during the driest ongoing 22 yr period (2000-2021) in the southwestern USA in over 1200 yr.
JE Lovich +5 more
doaj +1 more source
Ecosphere, 2021 Accurate population estimates are essential for monitoring and managing wildlife populations. Mark–recapture sampling methods have regularly been used to estimate population parameters for rare and cryptic species, including the federally listed Mojave ...
Corey I. Mitchell +7 more
doaj +1 more source
Dog attacks on wild desert tortoises: A risk model
The Journal of Wildlife Management, Volume 90, Issue 4, May 2026.Domestic dogs attack and severely injure wild desert tortoises at the urban and ex‐urban interface with deserts. Severe trauma to tortoises increased 4 times to shell and limbs and 16.5 times to the gular horn over the decades between the 1970s and 2000s. Tortoises were at exponential risk of severe trauma when living within 12 km of settlements, towns,
Andrea S. Carlson +2 more
wiley +1 more source
Endangered Species Research, 2015 In the Mojave Desert of the southwestern United States, adult Agassiz’s desert tortoises Gopherus agassizii typically experience high survival, but population declines associated with anthropogenic impacts led to their listing as a threatened Species ...
PG Emblidge +4 more
doaj +1 more source
Endangered Species Research, 2020 Two tortoise species native to the American southwest have experienced significant habitat loss from development and are vulnerable to ongoing threats associated with continued development.
Carter, SK +7 more
doaj +1 more source
The Southwestern desert tortoise, Gopherus agassizii
Zoologica : scientific contributions of the New York Zoological Society., 1936 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +1 more source
Ecology and Evolution, Volume 16, Issue 4, April 2026.We introduce ENHYDROSS, a new mechanistic model that uses optimal swimming speed and minimum cost of transport to estimate maximum dispersal distances and durations for vertebrates, enabling assessment of long‐distance oceanic dispersal potential. Applied to a range of extant and extinct animals, the model's estimates generally align with observed data;
Alexandros Pantelides +5 more
wiley +1 more source