Article
Biology
Ryan K. Schott, Rayna C. Bell, Ellis R. Loew, Kate N. Thomas, David J. Gower, Jeffrey W. Streicher, Matthew K. Fujita
Summary: By analyzing whole-eye transcriptomes, this study identified significant differences in gene expression between tadpole and juvenile southern leopard frogs, which reflect morphological and physiological changes and adaptive shifts in vision in aquatic and terrestrial light environments.
Review
Ecology
Barbara J. Downes, Barbara L. Peckarsky, Jill Lancaster, William D. Bovill, Maria Alp
Summary: Understanding the regulation of population sizes in organisms with complex life cycles is challenging, as limits on population sizes can occur at any stage or transition. Our review explores whether successfully laid eggs determine densities of later stages in various organisms, suggesting potential spatial variation in egg densities. Existing data indicate strong associations between egg and subsequent juvenile densities in species where suitable egg-laying habitat is scarce.
ANNUAL REVIEW OF ECOLOGY, EVOLUTION, AND SYSTEMATICS, VOL 52, 2021
(2021)
Article
Biology
Rebecca Nagel, Claire Stainfield, Cameron Fox-Clarke, Camille Toscani, Jaume Forcada, Joseph I. Hoffman
Summary: Researchers studied the potential Allee effects in an Antarctic fur seal population by comparing two adjacent breeding colonies of contrasting density. They found that at low density, pup mortality was higher, mainly due to predation. These findings shed light on Allee effects in wild populations and the emerging role of predators in the decline of a pinniped species.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Multidisciplinary Sciences
Pedro G. Nicolau, Rolf A. Ims, Sigrunn H. Sorbye, Nigel G. Yoccoz
Summary: Studies of spatial population synchrony are important for understanding ecological dynamics. Climate change has become a new focus in these studies, but the role of season-specific density dependence in shaping large-scale population synchrony has been overlooked. This study presents an analytical protocol that considers both season and geographic context-specific density dependence to better understand the sources of population synchrony. By analyzing time series of rodent populations, the study reveals that season-specific density dependence is a major component of population synchrony.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Ecology
Logan S. Billet, Vanessa P. Wuerthner, Jessica Hua, Rick A. Relyea, Jason T. Hoverman
Summary: Evidence suggests that populations of non-target wildlife species can develop tolerance to pesticides, with those closer to agriculture showing higher baseline tolerance. Exposure to pesticides may affect susceptibility to parasites in wood frog populations, but does not consistently increase parasite susceptibility or worsen disease outcomes. Further research is needed to understand how genetic variation impacts susceptibility to parasites and if these patterns remain consistent over time and space.
FRESHWATER BIOLOGY
(2021)
Article
Ecology
Colin Southwell, Simon Wotherspoon, Louise Emmerson
Summary: The study suggests that density-dependent processes may be limiting population growth in the Adelie penguin metapopulation, leading to a slowdown in regional growth rate and differential growth across local populations. The observation of new colonization in a half-century of population growth by this highly philopatric species further supports the notion of density-dependent regulation. These emerging patterns of spatio-temporal population dynamics indicate potential new insights into metapopulation dynamics of long-lived species over a short time-frame.
Article
Biodiversity Conservation
Alice Monnier-Corbel, Anne-Christine Monnet, Leo Bacon, Blas M. Benito, Alexandre Robert, Yves Hingrat
Summary: The study indicates that reproductive success of North African Houbara bustard is negatively impacted by local densities, with this relationship remaining constant over time and space and not varying with habitat quality.
GLOBAL ECOLOGY AND CONSERVATION
(2022)
Article
Ecology
Emily H. Le Sage, Sarah Duncan, Travis Seaborn, Jennifer Cundiff, Leslie J. Rissler, Erica J. Crespi
Summary: This study found that environmental and competition selection pressures drive geographic variation in larval and metamorphic traits in wood frog populations. Additionally, populations with high-suitability/high-density are better at coping with competition pressure.
Article
Environmental Sciences
J. Bouffard, V Careau, S. A. Robinson, P. Bergeron
Summary: This study investigates the interactions between neonicotinoids and natural environmental stressors in wood frogs and highlights the importance of including behavioral assays and natural stressors in studies of amphibian ecotoxicology. The results show that imidacloprid and population density can affect the behavior and development of wood frogs, especially in the presence of predation cues.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Geochemistry & Geophysics
Kai Tan, Weiguo Zhang, Zhen Dong, Xiaolong Cheng, Xiaojun Cheng
Summary: Terrestrial laser scanning (TLS) technology can effectively retrieve the structural and biophysical attributes of trees by separating leaf and wood points using intensity and density data. The proposed method shows a high accuracy and efficiency in separating leaf and wood points, and can be robustly applied to various trees with different characteristics.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2021)
Review
Ecology
Harry P. Andreassen, Janne Sundell, Fraucke Ecke, Stefan Halle, Marko Haapakoski, Heikki Henttonen, Otso Huitu, Jens Jacob, Kaja Johnsen, Esa Koskela, Juan Jose Luque-Larena, Nicolas Lecomte, Herwig Leirs, Joachim Marien, Magne Neby, Osmo Ratti, Thorbjorn Sievert, Grant R. Singleton, Joannes van Cann, Bram Vanden Broecke, Hannu Ylonen
Summary: This passage discusses the fascinating population dynamics of small rodent populations around the world, highlighting differences between those in the northern hemisphere and those in the southern hemisphere. It also brings attention to ten questions that remain unanswered and are crucial for understanding the generality of small rodent population dynamics.
Article
Ecology
Caio S. Ballarin, Felipe W. Amorim, David M. Watson, Francisco E. Fonturbel
Summary: Keystone plant species are important for restoring degraded terrestrial sites, but their demographic characteristics and interactions with other species need to be considered. Replanting at low densities can re-establish food webs, while high-density restoration may affect the establishment and survival of sympatric plant species.
RESTORATION ECOLOGY
(2023)
Article
Ecology
Christophe Pelabon, Steeve D. Cote, Marco Festa-Bianchet, Jean-Michel Gaillard, Mathieu Garel, Jean-Francois Lemaitre, Anne Loison, Morgane Tidiere, Carole Toigo
Summary: The study revealed that there are gender-specific differences in the static allometry between horn length and body mass in different mountain ungulate populations, and these differences can be influenced by population density. In the face of environmental variation, static allometric slopes are more stable than allometric intercepts.
Article
Zoology
Vanessa C. K. Terrell, John C. Maerz, Nathan J. Engbrecht, Rochelle M. Stiles, Brian A. Crawford, Michael J. Lannoo
Summary: This study used five-year data to demonstrate the relative importance and potential of tadpole survival as a target for population management in a Crawfish Frog population. The results showed that tadpole survival had a strong impact on population growth, with higher survival rates in breeding sites with higher density. The study also found that frog survival rate and temporary emigration behavior had an effect on population persistence.
ICHTHYOLOGY AND HERPETOLOGY
(2023)
Article
Zoology
Zachary T. Vegso, Anila A. Kalonia, Skyler Stevens, Tracy A. G. Rittenhouse
Summary: This study experimentally tests the effects of salinity and temperature conditions experienced as larvae on the behavioral and physiological responses of juvenile Wood Frogs (Lithobates sylvaticus). The results show that Wood Frogs can detect and respond to salinity levels in terrestrial habitats, and this response depends on the environmental conditions experienced during the larval stage.
JOURNAL OF HERPETOLOGY
(2022)