Charles Drost

Charles Drost
U.S. Geological Survey · Southwest Biological Science Center

About

36
Publications
5,132
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829
Citations
Citations since 2016
8 Research Items
241 Citations
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2016201720182019202020212022010203040
2016201720182019202020212022010203040
2016201720182019202020212022010203040
Introduction
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Publications

Publications (36)
Article
Sin Nombre virus (SNV) is a zoonotic virus that is highly pathogenic to humans. The deer mouse, Peromyscus maniculatus, is the primary host of SNV, and SNV prevalence in P. maniculatus is an important indicator of human disease risk. Because the California Channel Islands contain permanent human settlements, receive hundreds of thousands of visitor...
Article
Full-text available
The land snails and slugs have the highest level of endemism among all major animal groups on the California Channel Islands, with nearly 75% of the native terrestrial species confined to one or more of the 8 islands. In spite of this endemism, and in spite of the rarity of some species, the snails and slugs are one of the most poorly known groups....
Article
Full-text available
The Island Night Lizard (Xantusia riversiana) was removed from the federal list of threatened species in May 2014. This strongly differentiated species is endemic to 3 of the southern California Channel Islands—San Clemente, San Nicolas, and Santa Barbara. Suitable habitat for Island Night Lizards is extensive on San Clemente Island, and the specie...
Article
Capture-recapture methods are commonly used to estimate abundance and density of wild animal populations. Although a variety of sophisticated analytical techniques are available to evaluate capture-recapture data, vertebrate monitoring programs often lack the resources (e.g., time, personnel, and/or analytical expertise) to apply these methods. As...
Article
Full-text available
The Island Night Lizard (Xantusia riversiana) is endemic to three of the Channel Islands off the coast of California, USA. Introduced species such as goats, sheep, and cats have profoundly affected the fauna and flora of the islands for over 150 years, but most of these non-native species have been recently removed. We measured the distribution of...
Article
We document global phylogenetic pattern in the pupillid land snail genus Vertigo by analyses of nDNA (ITS1 and ITS2) and mtDNA (CytB and 16S) sequence from 424 individuals representing 91 putative specific and subspecific Vertigo taxa. nDNA and mtDNA data were separately subjected to neighbor-joining, minimum evolution, maximum likelihood and Bayes...
Article
Full-text available
The juxtaposition of wildlife and wind or solar energy facility infrastructure can present problems for developers, planners, policy makers, and management agencies. Guidance on siting of these renewable energy facilities may help identify potential wildlife-facility conflicts with species of regulatory or economic concern. However, existing spatia...
Article
Full-text available
Anthropogenic introduction of species is a major contributor to loss of biodiversity. Translocations within the range of a species are less frequently recognized, but have the potential for negative effects as well. Genetic mixing may lead to loss of local adaptations or further decline through outbreeding depression. These cryptic invasions may be...
Article
Full-text available
Recent restrictions on uranium mining within the Grand Canyon watershed have drawn attention to scientific data gaps in evaluating the possible effects of ore extraction to human populations as well as wildlife communities in the area. Tissue contaminant concentrations, one of the most basic data requirements to determine exposure, are not availabl...
Article
Full-text available
The Island Night Lizard is a federally threatened species endemic to the Channel Islands of California. Twelve microsatellite loci were developed for use in this species and screened in 197 individuals from across San Nicolas Island, California. The number of alleles per locus ranged from 6 to 21. Observed heterozygosities ranged from 0.520 to 0.84...
Article
Inferring the natural distribution and native status of organisms is complicated by the role of ancient and modern humans in utilization and translocation. Archaeological data and traditional cultural use provide tools for resolving these issues. Although the painted turtle (Chrysemys picta) has a transcontinental range in the United States, popula...
Article
We studied the reproductive ecology of female Sonora mud turtles ( Kinosternon sonoriense ) at Montezuma Well, a chemically-challenging natural wetland in central Arizona, USA. Females matured between 115.5 and 125 mm carapace length (CL) and 36-54% produced eggs each year. Eggs were detected in X-radiographs from 23 April-28 September (2007-2008)...
Article
Full-text available
The relative roles of top-down and bottom-up forces in affecting disease prevalence in wild hosts is important for understanding disease dynamics and human disease risk. We found that the prevalence of Sin Nombre virus (SNV), the agent of a severe disease in humans (hantavirus pulmonary syndrome), in island deer mice from the eight California Chann...
Article
Full-text available
We detected evidence of prédation by the Sonora mud turtle (Kinosternon sonoriense) on the Arizona alligator lizard (Elgaria kingii nobilii) and the ground snake (Sonora semiannulata) at Montezuma Well, Yavapai County, Arizona. Lizards have not been reported in the diet of sonoriense, and saurophagy is rare in turtles of the United States, having b...
Technical Report
Full-text available
Caves in northern Arizona and western New Mexico are being researched and inventoried by scientists with the U.S. Geological Survey and cooperating agencies. Southwestern caves have been little studied, and scientists are now finding that these lightless and nutrient-poor natural systems are home to life forms found nowhere else on Earth. This rese...
Conference Paper
Full-text available
We analyzed temperature data of nine SW U.S. caves using Fourier analysis to characterize thermal behavior, and line graphs to identify optimal times of detection in the thermal infrared. This work furthered our understanding of cave thermal behavior.
Conference Paper
Full-text available
This study aims to increase our understanding of cave thermal behavior and to identify optimal times for detecting caves using thermal remote sensing. Techniques developed for Earth caves will ultimately be applied to locating subterranean cavities on the
Conference Paper
Full-text available
The goal of this project is to improve capabilities for identifying caves on Mars, through: 1) studies of thermal properties and imaging of terrestrial caves; 2) computer modeling of cave thermal properties; and 3) GIS-aided analysis of Mars imagery for cave-like structures.
Article
There has been much concern about widespread declines among amphibians, but efforts to determine the extent and magnitude of these declines have been hampered by scarcity of comparative inventory data. We resurveyed a transect of the Sierra Nevada mountains in western North America that was carefully studied in the early 1990s. Our comparisons show...
Article
It has recently become evident that amphibian species in many areas of the world have suffered serious declines. Healthy, seemingly well-protected populations have disappeared for no obvious reason. Data from historic accounts and museum records indicate that the Cascades frog, Rana cascadae, was once abundant at the southern end of its range in th...
Article
We document two episodes, in different years, of Barn Owls (Tyto alba) preying on a winter population of Burrowing Owls (Athene cunicularia) on a southern California island. The predation in each case followed a marked shift in the diet of the Barn Owls, due to the cyclic decline of their normal small mammal prey. Heavy predation in the first year...
Article
We report on eight years of data for a population of deer mice (Peromyscus maniculatus) on Santa Barbara Island, California which reaches exceptionally high densities and fluctuates markedly in an apparent three- to four-year cycle. The cyclic increase follows winters with high rainfall, and the decline may be similarly associated with low rainfall...
Article
Island night lizards are exclusively diurnal. They occur most commonly in habitats providing dense vegetative cover (thickets of boxthorn and prickly pear) and in certain types of rock habitat. Night lizards are sedentary and have very small home ranges (mean 17.2m2). They are slow-growing with some individuals living to at least 12 yr old. The mos...
Article
Full-text available
We present the results of an amphibian and reptile inventory conducted in 1997-1998 at Petrified Forest National Park. Using visual encounter surveys, pitfall trapping, artificial cover boards, and night driving techniques, we recorded 1,628 indi-vidual amphibians and reptiles (exclusive of larval amphibians) of 23 species. The species total includ...
Article
Full-text available
The Southwest Regional Gap Analysis Program will build upon previous gap analysis programs conducted in Arizona, Colorado, Nevada, New Mexico, and Utah to provide products that are consistent among areas of this large geographic region. The program will develop new land cover, vertebrate species distributions, and land steward-ship data layers usin...
Article
Like all of the California Channel Islands, Santa Cruz Island has been strongly impacted by a variety of introduced non-native animal species. On Santa Cruz, non-native sheep (Ovis aries) and feral pigs (Sus scrofa) formerly occurred in very high numbers. Sheep were removed from 90% of the island by the late 1980s, and from the remaining 10% by 200...
Article
Santa Barbara Island is a small island with an extensive history of botanical exploration. We report on floristic studies on the island that have spanned the last three decades, covering the period since the removal of introduced European rabbits from the island. In aggregate, these studies have surveyed this small island thoroughly, and have recor...

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