What Have Long-Term Field Studies Taught Us About Population Dynamics?, Beth Reinke, David A.W. Miller, Fredric J. Janzen
Aug 2019
What Have Long-Term Field Studies Taught Us About Population Dynamics?, Beth Reinke, David A.W. Miller, Fredric J. Janzen
Beth Reinke
Long-term studies have been crucial to the advancement of population bi- ology, especially our understanding of population dynamics. We argue that this progress arises from three key characteristics of long-term research. First, long-term data are necessary to observe the heterogeneity that drives most population processes. Second, long-term studies often inherently lead to novel insights. Finally, long-term field studies can serve as model systems for population biology, allowing for theory and methods to be tested under well-characterized conditions. We illustrate these ideas in three long-term field systems that have made outsized contributions to our understanding of population ecology, evolution, and conservation …
Joint Estimation Of Growth And Survival From Mark-Recapture Data To Improves Estimates Of Senescence In Wild Populations, Beth Reinke, Luke A. Hoekstra, Anne M. Bronikowski, Fredric J. Janzen, David A.W. Miller
Jul 2019
Joint Estimation Of Growth And Survival From Mark-Recapture Data To Improves Estimates Of Senescence In Wild Populations, Beth Reinke, Luke A. Hoekstra, Anne M. Bronikowski, Fredric J. Janzen, David A.W. Miller
Beth Reinke
Understanding age-dependent patterns of survival is fundamental to predicting
population dynamics, understanding selective pressures, and estimating rates of senescence.
However, quantifying age-specific survival in wild populations poses significant logistical
and statistical challenges. Recent work has helped to alleviate these constraints by
demonstrating that age-specific survival can be estimated using mark-recapture data even when age is unknown for all or some individuals. However, previous approaches do not incorporate auxiliary information that can improve age estimates of individuals. We introduce a survival estimator that combines a von Bertalanffy growth model, age-specific hazard functions, and a Cormack-Jolly-Seber mark-recapture model into a single hierarchical …
A Novel Body Coloration Phenotype In Anolis Sagrei: Implications For Physiology, Fitness, And Predation, Yasmeen Erritouni, Beth Reinke, Ryan Calsbeek
Dec 2018
A Novel Body Coloration Phenotype In Anolis Sagrei: Implications For Physiology, Fitness, And Predation, Yasmeen Erritouni, Beth Reinke, Ryan Calsbeek
Beth Reinke
In animals, color signals that convey information about quality are often associated with costs linked to the expression of coloration and may therefore be honest signals of sender quality. Honest indicators are often seen in sexual signals that are used by males to advertise quality to females. Carotenoid and pterin pigments are responsible for yellow, orange, and red coloration in a variety of taxa, but can also serve important roles as antioxidants by reducing free radicals in the body. In this study, we test the effects of a novel full-bodied orange color phenotype of the brown anole, Anolis sagrei, on …
Maternal Allocation Of Carotenoids To Eggs In An Anolis Lizard, Beth Reinke, Yasmeen Erritouni, Ryan Calsbeek
Jan 2018
Maternal Allocation Of Carotenoids To Eggs In An Anolis Lizard, Beth Reinke, Yasmeen Erritouni, Ryan Calsbeek
Beth Reinke
The maternal allocation of carotenoids to eggs has been widely documented and manipulated. However, it is often assumed that the sole adaptive value of this allocation is to increase offspring fitness. Because carotenoids can be pro-oxidants or antioxidants depending on their concentrations and their chemical environment (i.e. presence of other antioxidants), dams may need to dispose of excess carotenoids upon depletion of other anti- oxidants to prevent oxidative damage. Additionally, the amount of carotenoids deposited in eggs may be de- pendent on male traits such as quality and coloration. We evaluated these two non-mutually exclusive hy- potheses …
Plastron Pigmentation Variation In A Coastal Turtle Species Of Conservation Concern (Malaclemys Terrapin), Beth Reinke, Steven Pearson, Will Selman
Dec 2017
Plastron Pigmentation Variation In A Coastal Turtle Species Of Conservation Concern (Malaclemys Terrapin), Beth Reinke, Steven Pearson, Will Selman
Beth Reinke
Malaclemys terrapin inhabits salt marshes of the coastal United States and has been historically divided into seven subspecies. Two of the described subspecies, M. t. pileata and M. t. littoralis, occur along the western and eastern coastlines of Louisiana, respectively. To better understand potential boundaries of these two subspecies, we documented pigmentation variation of the plastron along the coast of Louisiana where the subspecies supposedly intergrade. Photographs of the plastron were taken of captured individuals and we quantified pigment with a photoprocessing software (ImageJ). We found pigmentation differences between sexes, with females having lighter plastrons than males. The plastron pigmentation …
Publication Overlap: Building An Academic House With Salami Shingles, Christine Urbanowicz, Beth Reinke
Dec 2017
Publication Overlap: Building An Academic House With Salami Shingles, Christine Urbanowicz, Beth Reinke
Beth Reinke
Salami slicing, shingling, and meat extending are all fanciful terms for a thorny and often overlooked issue. Publication overlap—the presentation of redundant ideas or data in multiple papers by the same authors—is a practice that warrants serious discussion. When there is little to no publication overlap, the findings in one paper lead to new ideas and the collection of new data, producing a paper trail of scien- tific progress that moves the field forward (Fig. 1). At the other extreme, authors present the same text and data in two papers, which is usually a clear violation of journal copyright policies …
A Test Of An Antipredatory Function Of Conspicuous Plastron Coloration In Hatchling Turtles, Beth Reinke, Ryan Calsbeek, Devi Stuart-Fox
Mar 2017
A Test Of An Antipredatory Function Of Conspicuous Plastron Coloration In Hatchling Turtles, Beth Reinke, Ryan Calsbeek, Devi Stuart-Fox
Beth Reinke
Bright colorations in animals are sometimes an antipredatory signal meant to startle, warn, or deter a predator from consuming a prey organism. Freshwater turtle hatchlings of many species have bright ventral coloration with high internal contrast that may have an antipredator function. We used visual modeling and field experiments to test whether the plastron coloration of Chrysemys picta hatchlings deters predators. We found that bird predators can easily distinguish hatchling turtles from their backgrounds and can easily see color contrast within the plastron. Raccoons cannot easily discriminate within- plastron color contrast but can see hatchlings against common backgrounds. Despite this, …
Natural History Note: Snapping Turtle Behavior, Beth Reinke, David Klinges
Dec 2016
Natural History Note: Snapping Turtle Behavior, Beth Reinke, David Klinges
Beth Reinke
No abstract provided.
