Explanipedia

Penguin diet from space: Links between sea ice, Antarctic food webs, and population change Open

Casey Youngflesh, Christian Che‐Castaldo, M. Schwaller, Michael J. Polito, Shawn Serbin , et al. · 2025

Rapid environmental change poses a threat to Antarctic ecosystems. However, the spatial scale of Antarctica and its extreme environment have precluded a synoptic understanding of the links between environmental change and ecological respon…

Geography, Environmental Conditions and Life History Shape Patterns of Within‐Population Phenotypic Variation in North American Birds Open

Viviane Zulian, Casey Youngflesh · 2025

Intraspecific variation is a fundamental component of biodiversity, shaping species interactions and coexistence dynamics. While numerous mechanisms have been proposed to shape the degree of phenotypic variation within species, many remain…

Shifting Gears in a Shifting Climate: Birds Adjust Migration Speed in Response to Spring Vegetation Green‐Up Open

Bruna R. Amaral, Casey Youngflesh, Morgan W. Tingley, David A. Miller · 2025

Aim Investigate whether birds use vegetation green‐up, a measure of spring arrival, as a cue to shift their migration speed in response to climate change by examining: (1) how green‐up moves in the landscape, (2) how bird migratory speed r…

Potential for bird–insect phenological mismatch in a tri‐trophic system Open

Michael W. Belitz, Elise A. Larsen, Allen H. Hurlbert, Grace J. Di Cecco, Naresh Neupane , et al. · 2025

Climate change is altering the seasonal timing of biological events across the tree of life. Phenological asynchrony has the potential to hasten population declines and disrupt ecosystem function. However, we lack broad comparisons of the …

Environmental Variability Shapes Life History of the World's Birds Open

Casey Youngflesh, Kelly Kapsar, Adriana Uscanga, Peter J. Williams, Jeffrey W. Doser , et al. · 2025

Theory suggests life history plays a key role in the ability of organisms to persist under fluctuating environmental conditions. However, the notion that environmental variability has shaped the distribution of life history traits across l…

Spatial Nonstationarity in Phenological Responses of Nearctic Birds to Climate Variability Open

Benjamin A. Tonelli, Casey Youngflesh, Tyler Cox, Montague H. C. Neate‐Clegg, Emily B. Cohen , et al. · 2024

Climate change is shifting the phenology of migratory animals earlier; yet an understanding of how climate change leads to variable shifts across populations, species and communities remains hampered by limited spatial and taxonomic sampli…

The influence of biotic and abiotic factors on the bacterial microbiome of gentoo penguins (Pygoscelis papua) in their natural environment Open

Chloe Kaczvinsky, Hila Levy, Stephen Preston, Casey Youngflesh, Gemma V. Clucas , et al. · 2024

The microbiome is a key factor in the health, well-being, and success of vertebrates, contributing to the adaptive capacity of the host. However, the impact of geographic and biotic factors that may affect the microbiome of wild birds in p…

2023 AOS Florence Merriam Bailey Award to Allison E. Huysman Open

Sara J. Oyler‐McCance, Brooke L. Bateman, Nathan W. Cooper, Kevin C. Fraser, Elizabeth A. MacDougall‐Shackleton , et al. · 2023

Journal Article 2023 AOS Florence Merriam Bailey Award to Allison E. Huysman Get access Sara Oyler-McCance, Sara Oyler-McCance U.S. Geological Survey, Fort Collins Science Center, Fort Collins, Colorado, USA Corresponding author: soyler@us…

Demographic consequences of phenological asynchrony for North American songbirds Open

Casey Youngflesh, Graham A. Montgomery, James F. Saracco, David A. Miller, Robert Guralnick , et al. · 2023

Changes in phenology in response to ongoing climate change have been observed in numerous taxa around the world. Differing rates of phenological shifts across trophic levels have led to concerns that ecological interactions may become incr…

Geomagnetic disturbance associated with increased vagrancy in migratory landbirds Open

Benjamin A. Tonelli, Casey Youngflesh, Morgan W. Tingley · 2023

What is an urban bird? Trait-based predictions of urban tolerance for the world’s birds are modulated by latitude and human population density Open

Montague H. C. Neate‐Clegg, Benjamin A. Tonelli, Casey Youngflesh, Joanna X. Wu, Graham A. Montgomery , et al. · 2022

As human density increases, biodiversity must increasingly co-exist with urbanization or face local extinction. Tolerance of urban areas has been linked to numerous functional traits, yet few globally-consistent patterns have emerged to ex…

Extreme uncertainty and unquantifiable bias do not inform population sizes Open

Orin J. Robinson, Jacob B. Socolar, Erica F. Stuber, Tom Auer, Alex J. Berryman , et al. · 2022

Abiotic conditions shape spatial and temporal morphological variation in North American birds Open

Casey Youngflesh, James F. Saracco, Rodney B. Siegel, Morgan W. Tingley · 2022

Abiotic environmental conditions play a key role in driving the size and shape of organisms. Quantifying environment-morphology relationships is important not only for understanding the fundamental processes driving phenotypic diversity wi…

Trait-Based Predictions of Urban Tolerance for the World's Birds Are Modulated by Latitude and Human Population Density Open

Montague H. C. Neate‐Clegg, Benjamin A. Tonelli, Casey Youngflesh, Joanna X. Wu, Graham A. Montgomery , et al. · 2022

Data from: The effect of insect food availability on songbird reproductive success and chick body condition: evidence from a systematic review and meta-analysis Open

Eliza M. Grames, Graham A. Montgomery, Casey Youngflesh, Morgan W. Tingley, Chris S. Elphick · 2022

This repository contains data from “The effect of insect food availability on songbird reproductive success and chick body condition: evidence from a systematic review and meta-analysis” by Eliza M. Grames^1,2, Graham A. Montgome…

Broadening Participation: 21st Century Opportunities for Amateurs in Biology Research Open

Orlando de Lange, Casey Youngflesh, Ana Ibarra, Rolando Perez, Matias Kaplan · 2021

Synopsis The modern field of biology has its roots in the curiosity and skill of amateur researchers and has never been purely the domain of professionals. Today, professionals and amateurs contribute to biology research, working both toge…

Time-lapse imagery is cheap and timely in the fight against colonial species' decline Open

Tom Hart, Fiona Jones, Caitlin Black, Chris Lintott, Casey Youngflesh , et al. · 2021

Many of the species in decline around the world are subject to different environmental stressors across their range, so replicated large-scale monitoring programmes, are necessary to disentangle the relative impacts of these threats. At th…

Working across space and time: nonstationarity in ecological research and application Open

Christine R. Rollinson, Andrew O. Finley, M. Ross Alexander, Sudipto Banerjee, Kelly-Ann Dixon Hamil , et al. · 2021

Ecological research increasingly considers integrative relationships among phenomena at broad spatial and temporal domains. However, such large‐scale inferences are commonly confounded by changing properties in the processes that govern ph…

Large‐scale assessment of intra‐ and inter‐annual breeding success using a remote camera network Open

Casey Youngflesh, Fiona M. Jones, Heather J. Lynch, Joan Arthur, Zuzana Ročkaiová , et al. · 2020

Changes in the physical environment along the Antarctic Peninsula have been among the most rapid anywhere on the planet. In concert with environmental change, the potential for direct human disturbance resulting from tourism, scientific pr…

Precipitation could spell peril for penguins Open

Casey Youngflesh · 2018

An Adélie penguin (Pygoscelis adeliae) is almost completely buried in snow while incubating its eggs at a breeding colony on the Antarctic Peninsula. The large amounts of snow are the result of a storm earlier that day. Heavy precipitation…

MCMCvis: Tools to Visualize, Manipulate, and Summarize MCMC Output Open

Casey Youngflesh · 2018

swcarpentry/git-novice-es: Git Novice in Spanish v2018.04.3 Open

Paula Andrea Martinez, Verónica A. Jiménez, Hely Salgado, LauCIFASIS, Javier Forment , et al. · 2018

Software Carpentry lección para control de versiones con Git

Multi-modal survey of Adélie penguin mega-colonies reveals the Danger Islands as a seabird hotspot Open

Alex Borowicz, Philip McDowall, Casey Youngflesh, Thomas Sayre-McCord, Gemma V. Clucas , et al. · 2018

Despite concerted international effort to track and interpret shifts in the abundance and distribution of Adélie penguins, large populations continue to be identified. Here we report on a major hotspot of Adélie penguin abundance identifie…

Rethinking “normal”: The role of stochasticity in the phenology of a synchronously breeding seabird Open

Casey Youngflesh, Stéphanie Jenouvrier, Jefferson T. Hinke, Lauren DuBois, Judy St. Leger , et al. · 2017

Phenological changes have been observed in a variety of systems over the past century. There is concern that, as a consequence, ecological interactions are becoming increasingly mismatched in time, with negative consequences for ecological…

Black-swan events: Population crashes or temporary emigration? Open

Casey Youngflesh, Heather J. Lynch · 2017

Using the Global Population Dynamics Database (GPDD) to identify extreme events in abundance times series, Anderson et al. (1) state that “Black-swan events manifest primarily as population die-offs and crashes (86%) rather than unexpected…

Pan-Antarctic analysis aggregating spatial estimates of Adélie penguin abundance reveals robust dynamics despite stochastic noise Open

Christian Che‐Castaldo, Stéphanie Jenouvrier, Casey Youngflesh, Kevin T. Shoemaker, Grant Humphries , et al. · 2017

Data Carpentry SQL Ecology lesson v2017.04.0 Open

Greg Wilson, Raniere Silva, Ethan P. White, Timothée Poisot, Tracy Teal , et al. · 2017

Initial release of Data Carpentry SQL Ecology lesson

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