A5086984239- Turtle Biology and Conservation
- Wildlife Ecology and Conservation
- Species Distribution and Climate Change
- Wildlife-Road Interactions and Conservation
- Rabies epidemiology and control
- Amphibian and Reptile Biology
- Avian ecology and behavior
- DNA Repair Mechanisms
- Geotechnical Engineering and Underground Structures
- Emergency and Acute Care Studies
- Advanced Optical Sensing Technologies
- Interdisciplinary Research and Collaboration
- Cardiac Arrest and Resuscitation
- Global Health Workforce Issues
- Climate variability and models
- Plant Ecology and Soil Science
- Microbial infections and disease research
- Asphalt Pavement Performance Evaluation
- Marine Ecology and Invasive Species
- Marine animal studies overview
- Aquatic Invertebrate Ecology and Behavior
- DNA and Nucleic Acid Chemistry
- Animal and Plant Science Education
- Fish Ecology and Management Studies
- Educational Games and Gamification
United States Fish and Wildlife Service
2008-2023
Max Planck Institute for Biophysical Chemistry
1985
Survival of the most variable As more species become highly threatened because human activity, there has been an increasing push to understand how best reintroduce or translocate individuals from wild captive populations. Suggestions have varied choosing environmentally similar regions those that might ability adapt new environments. Scott et al. used long-term data collected during translocations Mojave Desert tortoises, including animals formerly kept as pets, test these questions....
The Mojave desert tortoise was listed as threatened under the US Endangered Species Act (ESA) because of local population declines and an array threats. Challenges to recovery this species include incomplete understanding threats most responsible for its decline, insufficient information on effectiveness management actions, intractability across a large geographical range multiple jurisdictions. Recognition that these challenges require long-term conservation efforts ensure species'...
Abstract Data from long‐term monitoring programs, such as the US Fish and Wildlife Service (USFWS) line distance sampling (LDS) program for Mojave desert tortoises ( Gopherus agassizii ), are increasingly being used in new ways to elucidate trends population dynamics. We USFWS LDS data a novel way generate range‐wide predictions of occupancy, colonization, local extinction rates 2001 2018. developed dynamic occupancy model answer fundamental questions posed by Bureau Land Management...
Recruitment of pronghorns (Antilocapra americana; fawns∶100 females) through late summer was positively correlated with precipitation during the previous winter (October–April) on 10 areas in Arizona 1983–2002. There no evidence serial autocorrelation recruitment fawns and strong within-year effects, even after accounting for differences among sites. that relationship between differed populations. Winter explained 38.5% variability years within We hypothesize is a limiting factor affecting...
Abstract Estimating population density and identifying those areas where is changing through time are central to prioritizing conservation management strategies. Obtaining reliable estimates of trends can be challenging, however, especially for long‐lived species that rare, have broad geographic distributions, difficult detect reliably during field surveys. We developed a hierarchical model distance‐sampling data characterizes spatial variation in at two scales simultaneously regional while...
Abstract We present results from a nonautoradiographic study of DNA replication in polytene chromosomes dipteran larvae. Monoclonal antibodies with specificity for 5‐bromodeoxyuridine (BrdUrd) were used to localize by indirect immunofluorescence the sites BrdUrd incorporation and follow dynamics synthesis salivary gland cells 4th instar Chironomus thummi This technique presents numerous advantages over autoradiographic procedures allows mapping patterns at level resolution one chromosomal...
Abstract Roads are important drivers of habitat loss, degradation, and fragmentation that affect global biodiversity. Detrimental effects roads include direct mortality individual animals, spread habitat-altering invasive plants, loss demographic genetic connectivity wildlife populations. Various measures address the negative on wildlife. However, most strategies for minimizing or mitigating focused actual themselves rather than collective travel network across landscapes. We summarized a...
Abstract Obtaining robust survival estimates is critical, but sample size limitations often result in imprecise or the failure to obtain for population subgroups. Concurrently, data are recorded on incidental reencounters of marked individuals, these unused analyses. We evaluated utility supplementing a traditional dataset with individuals that were collected ad hoc. used continuous time‐to‐event exponential model leverage matching information contained both datasets and assessed differences...
Editor's Note: The following report represents more than two years of study and deliberation by the APAP Degree Task Force, with input from membership other interested parties. At 2000 Annual Education Forum in Washington, D.C., October 25–29, all seven recommendations were accepted endorsed Board Directors subsequently approved a vote membership.
First posted April 16, 2021 For additional information, contact: Director,Western Ecological Research CenterU.S. Geological Survey3020 State University Drive EastSacramento, California 95819 The historic distribution of Mojave desert tortoises (Gopherus agassizii) was relatively continuous across the range, and importance tortoise habitat outside designated conservation areas (TCAs) to recovery has long been recognized for its contributions supporting gene flow between TCAs minimizing...
The Mojave Desert tortoise (Gopherus agassizii), federally listed as threatened, has suffered habitat loss and fragmentation due to human activities. Upper respiratory tract disease (URTD), a documented health threat desert tortoises, been detected at the Large-Scale Translocation Study Site (LSTS) in southwestern Nevada, US, fenced recipient site for translocated animals. Our study aimed 1) estimate prevalence of URTD Mycoplasma infection LSTS three nearby unfenced sites; 2) assess whether...