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Your search keyword '"Eggert, Lori S."' showing total 45 results
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45 results on '"Eggert, Lori S."'

14. Effects of a hydropower project on a high‐value Asian elephant population.

Author

Budd, Kris, Suddychan, Daophone, Tyson, Martin, Coudrat, Camille N. Z., McWilliam, Alex, Hallam, Christopher D., Johnson, Arlyne, and Eggert, Lori S.

Subjects
ASIATIC elephant, GENETIC variation, ENDANGERED species, POPULATION dynamics, SEX ratio, FRAGMENTED landscapes, WATER power
Abstract

Habitat loss and fragmentation are leading contributors to the endangered status of species. In 2006, the Nakai Plateau contained the largest known Asian elephant (Elephas maximus) population in the Lao People's Democratic Republic (Lao PDR), and the population was among those with the highest genetic diversity reported for Asian elephants. In 2008, completion of the Nam Theun 2 hydroelectric dam inundated much of the Plateau, resulting in the loss of 40% of elephant habitat. We studied elephant presence, movements, and the incidence of human–elephant conflict (HEC) on the Nakai Plateau and surrounding areas from 2004 to 2020, before and for 12 years after dam completion. To examine contemporary population dynamics in the Nakai elephants, we used genetic sampling to compare minimum population numbers, demography, and levels of genetic diversity from the wet and dry seasons in 2018/2019, 10 years after dam completion, with those reported in a pre‐dam‐completion genetic survey. After dam completion, we found a major increase in HEC locally and the creation of new, serious, and persistent HEC problems as far as 100 km away. While we were unable to compare estimated population sizes before and after dam completion, our data revealed a decrease in genetic diversity, a male‐biased sex ratio, and evidence of dispersal from the Plateau by breeding‐age females. Our results raise concerns about the long‐term viability of this important population as well as that of other species in this region. Given that hydropower projects are of economic importance throughout Laos and elsewhere in southeast Asia, this study has important implications for understanding and mitigating their impact. [ABSTRACT FROM AUTHOR]

Published
2023
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16. Pond-Breeding Amphibian Community Composition in Missouri

Author

DRAKE, DANA L., OUSTERHOUT, BRITTANY H., JOHNSON, JARRETT R., ANDERSON, THOMAS L., PETERMAN, WILLIAM E., SHULSE, CHRISTOPHER D., HOCKING, DANIEL J., LOHRAFF, KENTON L., HARPER, ELIZABETH B., RITTENHOUSE, TRACY A. G., ROTHERMEL, BETSIE B., EGGERT, LORI S., and SEMLITSCH, RAYMOND D.

Published
2015

21. One size does not fit all: Genetic considerations from the Missouri elk restoration

Author

Pero, Ellen M., primary, Bell, Donovan A., additional, Robinson, Zachary L., additional, Chitwood, M. Colter, additional, Hildreth, Aaron M., additional, Berkman, Leah K., additional, Keller, Barbara J., additional, Sumners, Jason A., additional, Hansen, Lonnie P., additional, Isabelle, Jason L., additional, Eggert, Lori S., additional, Titus, Chelsea L., additional, and Millspaugh, Joshua J., additional

Published
2021
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25. One size does not fit all: Genetic considerations from the Missouri elk restoration.

Author

Pero, Ellen M., Bell, Donovan A., Robinson, Zachary L., Chitwood, M. Colter, Hildreth, Aaron M., Berkman, Leah K., Keller, Barbara J., Sumners, Jason A., Hansen, Lonnie P., Isabelle, Jason L., Eggert, Lori S., Titus, Chelsea L., and Millspaugh, Joshua J.

Subjects
ELK, ANIMAL introduction, GENETIC variation, EMIGRATION & immigration, HETEROZYGOSITY, SUCCESS
Abstract

Population restoration is an inherently costly conservation practice typically reliant on animal translocations. There are many approaches to translocation and consideration is paid to understanding how various translocation models influence restoration success. Translocation strategies are often designed to meet site‐specific objectives, minimize cost, and maximize success. We investigated genetic diversity retention associated with the low‐founder, multi‐release, single admixed stock translocation model of the Missouri elk (Cervus canadensis) restoration in 2011–2013. We further estimated effective population size and projected future losses in genetic diversity if the restored Missouri elk herd is maintained at the population size objective with no immigration from neighboring states. We observed relatively high levels of genetic diversity retention as evidenced by minimal losses in allelic richness and expected heterozygosity. Our projections indicated 90% genetic diversity retention within the Missouri population for roughly 130 years. Where number of progeny or source stocks are limited by resource or disease considerations, use of a relatively low‐founder, single admixed source may enable retention of genetic variation, while minimizing costs. [ABSTRACT FROM AUTHOR]

Published
2022
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33. Spatial genetic structure in American black bears (Ursus americanus): female philopatry is variable and related to population history

Author

Kristensen, Thea V., primary, Puckett, Emily E., additional, Landguth, Erin L., additional, Belant, Jerrold L., additional, Hast, John T., additional, Carpenter, Colin, additional, Sajecki, Jaime L., additional, Beringer, Jeff, additional, Means, Myron, additional, Cox, John J., additional, Eggert, Lori S., additional, White, Don, additional, and Smith, Kimberly G., additional

Published
2017
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35. The influence of breeding phenology on the genetic structure of four pond‐breeding salamanders

Author

Burkhart, Jacob J., primary, Peterman, William E., additional, Brocato, Emily R., additional, Romine, Kimberly M., additional, Willis, M. Madeline S., additional, Ousterhout, Brittany H., additional, Anderson, Thomas L., additional, Drake, Dana L., additional, Rowland, Freya E., additional, Semlitsch, Raymond D., additional, and Eggert, Lori S., additional

Published
2017
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45. Noninvasive techniques provide novel insights for the elusive bush dog ( Speothos venaticus).

Author

D EMatteo, Karen E., Rinas, Miguel A., Argüelles, Carina F., Zurano, Juan Pablo, Selleski, Nicole, Bitetti, Mario S. Di, and Eggert, Lori S.

Subjects
SPEOTHOS venaticus, WILDLIFE conservation, HABITATS, ANIMAL ecology, GEOGRAPHIC information systems
Abstract

ABSTRACT The bush dog ( Speothos venaticus), a small and rarely seen canid from Central and South America, has proven extremely challenging to locate and study in the wild, making the development of species-specific and comprehensive carnivore conservation strategies difficult. From May to August 2011, a detection-dog-handler team located 34 scats from bush dogs in the northern ( n = 26) and central ( n = 8) zones of Misiones, Argentina. We identified 22 unique genotypes (14 northern and 8 central) and assigned sex to 100% of the genotyped scats. Only half of the scats were located inside 7 protected areas (4 northern and 3 central); the remaining half were located in 4 sites outside of protected areas (3 northern and 1 central). Results suggest low but significant differentiation between zones for bush dogs ( FST = 0.049, P = 0.010). Bush dogs demonstrated high habitat-use flexibility and a close association with altered habitat; however, altered habitat may not be optimal for the species because of the potential for lower prey densities and risk of exposure to life threatening diseases by domestic dogs. The effectiveness of noninvasive techniques (detection dogs, genetic analyses of scat, Geographic Information System technology) in studying the ecology of bush dogs not only opens the door for additional studies of a species that has proven difficult to study with standard survey techniques, but also provides an alternative approach that conservationists can use independent of habitat type and presence of humans. © 2014 The Wildlife Society. [ABSTRACT FROM AUTHOR]

Published
2014
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