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Nancy E. Karraker
University of Rhode Island
HabitatEcologyAmphibianPopulationBiology
50Publications
15H-index
778Citations
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Publications 50
Newest
#1Sengvilay Seateun (Kasetsart University)
#2Nancy E. Karraker (URI: University of Rhode Island)H-Index: 15
Last. Anchalee Aowphol (Kasetsart University)H-Index: 6
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#1Scott W. BuchananH-Index: 1
#2Jason J. KolbeH-Index: 24
Last. Nancy E. KarrakerH-Index: 15
view all 5 authors...
The northeastern United States has experienced dramatic alteration to its landscape since the time of European settlement. This alteration has had major impacts on the distribution and abundance of wildlife populations, but the legacy of this landscape change remains largely unexplored for most species of freshwater turtles. We used microsatellite markers to characterize and compare the population genetic structure and diversity between an abundant generalist, the eastern painted turtle (Chrysem...
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#1Edward Tak Chuen Lau (HKU: University of Hong Kong)H-Index: 3
#2Kenneth M.Y. Leung (HKU: University of Hong Kong)H-Index: 37
Last. Nancy E. Karraker (HKU: University of Hong Kong)H-Index: 15
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Abstract Information on the thermal limits and physiology of ectothermic amphibians is crucial to our understanding of their ecology in the natural environment, particularly with predicted global changes in climate. We documented the thermal limits of larvae of three amphibian species native to Hong Kong, and their introduced, invasive predator, the mosquitofish (Gambusia affinis). We then used larvae of the brown tree frog Polypedates megacephalus as a model amphibian to further investigate gro...
Source
#1Scott W. BuchananH-Index: 1
#2Bill BuffumH-Index: 6
Last. Nancy E. KarrakerH-Index: 15
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1 CitationsSource
#1Nancy E. Karraker (URI: University of Rhode Island)H-Index: 15
#2Samantha Fischer (UM: University of Manitoba)
Last. Sinlan Poo (Memphis Zoo)
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#1Anthony Lau (HKU: University of Hong Kong)H-Index: 1
#2Nancy E. Karraker (URI: University of Rhode Island)H-Index: 15
Last. David Dudgeon (HKU: University of Hong Kong)H-Index: 42
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Forest loss has been associated with reduced survival in many vertebrates, and previous research on amphibians has mostly focused on effects at early life stages. Paramesotriton hongkongensis is a tropical newt that breeds in streams but spends up to 10 months per year in terrestrial habitats. Populations are threatened by habitat degradation and collection for the pet trade, but the cryptic terrestrial lifestyle of this newt has limited our understanding of its population ecology, which inhibit...
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#1Bradley J. Cosentino (Hobart and William Smith Colleges)H-Index: 11
#2Jean-David MooreH-Index: 16
Last. James P. Gibbs (SUNY: State University of New York System)H-Index: 43
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Evolutionary change has been demonstrated to occur rapidly in human-modified systems, yet understanding how multiple components of global change interact to affect adaptive evolution remains a critical knowledge gap. Climate change is predicted to impose directional selection on traits to reduce thermal stress, but the strength of directional selection may be mediated by changes in the thermal environment driven by land use. We examined how regional climatic conditions and land use interact to a...
3 CitationsSource
#1Anthony Lau (HKU: University of Hong Kong)H-Index: 1
#2Nancy E. Karraker (URI: University of Rhode Island)H-Index: 15
Last. David Dudgeon (HKU: University of Hong Kong)H-Index: 42
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Abstract Core terrestrial habitat, sometimes called fixed-width riparian buffer or life zone, is defined as the spatial delineation of 95% of an amphibian population that encompasses all breeding, overwintering, and terrestrial foraging habitats. It has been proposed as a measure of the extent of terrestrial habitat use by amphibians, from which species-specific guidelines on buffer zone width can be derived. The Hong Kong newt (Paramesotriton hongkongensis), one of few tropical salamandrids, is...
1 CitationsSource
#2Nancy E. Karraker (URI: University of Rhode Island)H-Index: 15
We report here for the first time horsehair worms (Nematomorpha) from Hong Kong (China). Most specimens belong to the genus Chordodes , and can be assigned to C. bipilus , C. caledoniensis and to C . cf. moutoni . Two specimens have a cuticular pattern resembling the South American species C. peraccae or C. bouvieri , but for Southeast Asia this pattern is new. These two specimens are reported here as Chordodes sp. Additionally, Gordionus chinensis was found. One new species, Acutogordius koljai...
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#1David M. Marsh (W&L: Washington and Lee University)H-Index: 20
#2Bradley J. Cosentino (Hobart and William Smith Colleges)H-Index: 11
Last. James R. Vonesh (VCU: Virginia Commonwealth University)H-Index: 25
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Aim Understanding the scales over which land use affects animal populations is critical for conservation planning, and it can provide information about the mechanisms that underlie correlations between species distributions and land use. We used a citizen science database of anuran surveys to examine the relationship between road density, land use and the distribution of frogs and toads across spatial scales and regions of the United States. Location Eastern and Central United States. Methods We...
8 CitationsSource
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