Samantha Lantz

Samantha Lantz
Tulane University | TU · Department of Ecology and Evolutionary Biology

Doctor of Philosophy

About

19
Publications
2,758
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245
Citations

Publications

Publications (19)
Article
Both abiotic environmental conditions and variation in social environment are known to impact the acquisition of sexual signals. However, the influences of abiotic environmental and social factors are rarely compared to each other. Here we test the relative importance of these factors in determining whether and when male red-backed fairy-wrens, Mal...
Article
Full-text available
Fire disturbance in tropical savannas is integral to maintaining habitat heterogeneity and biodiversity, but its impact on avian species is highly variable. Savannas in northern Australia have recently been invaded by gamba grass (Andropogon gayanus), a perennial tussock grass that fuels late season fires at eight times the intensity of native vege...
Article
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Environmental disturbances, both natural and anthropogenic, have the capacity to substantially impact animal behavior and abundance, which can in turn influence patterns of genetic diversity and gene flow. However, little empirical information is available on the nature and degree of such changes due to the relative rarity of longitudinal genetic s...
Data
Additional information on sample extraction and microsatellite allele calls. (DOCX)
Data
Example pre-2010 assignment plots demonstrating a lack of clear support for higher suggested optimal values of K in determining regional population structure. (TIF)
Article
Full-text available
Individual level response to natural and anthropogenic disturbance represents an increasingly important, but as yet little understood, component of animal behavior. Disturbance events often alter habitat, which in turn can modify behaviors of individuals in affected areas, including changes in habitat use and associated changes in social structure....
Data
Red-backed fairy-wren group associations. Observations of red-backed fairywren groups of color-banded birds in 2013 and 2014 are provided in a.csv table. Spatial period denotes whether groups were observed pre- or post-fire, and location was used to determine if individuals were affected by fires. (CSV)
Article
Full-text available
The evolution of elaborate secondary sexual traits (i.e., ornaments) is well-studied in males but less so in females. Similarity in the appearance of ornaments between males and females supports the view that female ornaments arise as a neutral byproduct of selection on male traits due to genetic correlation between sexes, but recent research sugge...
Article
Full-text available
Sexual ornaments, including plumage ornamentation, are often studied during breeding periods even though signal development can take place months earlier. This temporal disconnect potentially obscures the proximate mechanisms that underlie signal expression and development. We studied the correlation between androgen levels and expression of orname...
Article
Full-text available
Phenotypically plastic signals that can be altered in response to changing environmental conditions provide animals with the ability to dynamically signal their current condition or status. Such flexibility might also provide a means of avoiding potential trade-offs between signal components. Among birds, for example, both the timing of expression...
Article
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Because zoos typically house animals for extended periods of time, longitudinal studies can play an important role in evaluating and optimizing animal care and management. For example, information on patterns of aggression and mating behavior across years can be used to monitor well-being, assess response to changes to group composition, and promot...
Article
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Many species of flamingo are endangered in the wild but common in zoos, where successful captive breeding programs are a management priority. Unlike their counterparts in the wild, captive flamingo individuals are easy to mark and follow, facilitating longitudinal data collection on social dynamics that may affect reproduction. We studied a captive...
Article
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Wading bird foraging success and habitat preference can be greatly affected by prey availability, which encompasses both prey density and the vulnerability of prey to capture. Two components of prey vulnerability, water depth and emergent vegetation, were manipulated within 10 m x 10 m enclosures to determine the relative effects on foraging habita...
Article
Type I interferons play an important role in the early defense against viral and other pathogens. These innate responses are also critically important in shaping the subsequent adaptive response. Thus, a more thorough knowledge of innate response types and mechanisms will improve our understanding of pathogenesis and guide the development of new th...
Article
Full-text available
Successful foraging by avian predators is influenced largely by prey availability, which encompasses not only the density of prey but also its vulnerability to capture. For wading birds (Ciconiiformes), habitat features such as water depth and density of vegetation are thought to affect the vulnerability of their aquatic prey. In January and April...
Article
Full-text available
The studies and findings discussed in this chapter of the 2008 South Florida Environmental Report – Volume I are presented within four main fields: (1) wildlife ecology, (2) plant ecology, (3) ecosystem ecology, and (4) landscape ecology. Programs of study were based on the short-term operational needs and long-term Everglades restoration goals of...
Technical Report
Full-text available
The studies and findings discussed in this chapter of the 2008 South Florida Environmental Report – Volume I are presented within four main fields: (1) wildlife ecology, (2) plant ecology, (3) ecosystem ecology, and (4) landscape ecology. Programs of study were based on the short-term operational needs and long-term Everglades restoration goals of...

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Projects

Projects (2)
Archived project
Research from my collaboration with Dr. Jordan Karubian's lab on flamingo social behavior and networks. For ongoing work, please see Dr. Karubian's research.