Results 31 to 40 of about 4,964 (255)

Sexing Galápagos penguins Spheniscus mendiculus by morphological measurements

Endangered Species Research, 2018
The ability to identify the sex of individuals is essential in studies of ecology, behavior, and conservation, but reliable methods for sexing species that exhibit low sexual dimorphism are often time consuming or invasive.
Cappello, CD, Boersma, PD
doaj   +1 more source

Extreme ecological response of a seabird community to unprecedented sea ice cover [PDF]

Royal Society Open Science, 2015
Climate change has been predicted to reduce Antarctic sea ice but, instead, sea ice surrounding Antarctica has expanded over the past 30 years, albeit with contrasted regional changes.
Christophe Barbraud, Karine Delord, Henri Weimerskirch   +2 more
doaj   +1 more source

Morphological adaptations of cervical vertebrae in plunge‐diving sulids

The Anatomical Record, EarlyView.
Abstract Foraging strategy frequently drives morphological diversification in birds. The plunge‐diving behavior of certain species makes the functional and ecological trade‐offs of variation in cervical vertebrae an especially intriguing question. This study compares cervical vertebrae across five plunge‐diving species and two non‐plunge‐diving species,
Megan L. Vandenberg, Alissa Perez, John Michael Racy, Adam P. Summers, Ed Habtour, Bart Boom   +5 more
wiley   +1 more source

A Semi-Automated Method for Estimating Adélie Penguin Colony Abundance from a Fusion of Multispectral and Thermal Imagery Collected with Unoccupied Aircraft Systems

Remote Sensing, 2020
Monitoring Adélie penguin (Pygoscelis adeliae) populations on the Western Antarctic Peninsula (WAP) provides information about the health of the species and the WAP marine ecosystem itself.
Clara N. Bird, Allison H. Dawn, Julian Dale, David W. Johnston   +3 more
doaj   +1 more source

Fire‐Safe Polymeric Insulation Foams for Energy‐Efficient and Low‐Carbon Buildings

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review systematically summarizes recent advances in fire‐safe polymeric insulation foams, emphasizing the balance among flame retardancy, thermal insulation, mechanical reliability, and long‐term durability. By linking material‐level thermophysical properties with building cooling‐energy demand and operational carbon emissions, it establishes a ...
Qinhe Guo, Jiayi Pan, Dehui Jia, Min Chen, Danni Pan, Yao Yuan, Ying Pan, Yan Zhang, Lulu Xu, Kate Nguyen, Wei Wang   +10 more
wiley   +1 more source

Comparative osteohistology of Hesperornis with reference to pygoscelid penguins: the effects of climate and behaviour on avian bone microstructure [PDF]

Royal Society Open Science, 2014
The broad biogeographic distribution of Hesperornis fossils in Late Cretaceous Western Interior Seaway deposits has prompted questions about whether they endured polar winters or migrated between mid- and high latitudes.
Laura E. Wilson, Karen Chin
doaj   +1 more source

Aerogel Fiber: A One‐Dimensional Programmable Porous Matter for Next Thermal Management Materials

Interdisciplinary Materials, EarlyView.
Aerogel fibers are redefined as one‐dimensional programmable porous matter, where thermal transport is governed by multiscale pathway engineering. By reconstructing and decoupling transport pathways from molecular to textile scales, these systems integrate insulation, radiative cooling, and adaptive thermal regulation.
Lizhi Ren, Zihui Liang, Xiangzhe Li, Huimin Wu, Sixing Xiong, Jin Qian, Kai Wang   +6 more
wiley   +1 more source

Corticosterone and Mitochondrial Efficiency Are Associated With Changes in DNA Oxidative Damage During an Acute Stress Response in Leach's Storm‐Petrels (Hydrobates leucorhous)

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT The ability of organisms to effectively respond to challenges is critical for survival. We investigated how an acute stressor affected corticosterone, mitochondrial function, and DNA oxidative damage in a wild population of Leach's storm‐petrels (Hydrobates leucorhous).
Kayla E. Lichtner, Jack K. Dziubek, Nicole A. Joseph, Sarah E. Chapman, Tori J. Chace, Dongxiao Sun, Zachary T. Bitzer, Antoine Stier, Robert A. Mauck, Patricia L. Jones, Mark F. Haussmann   +10 more
wiley   +1 more source

Holocene vegetation dynamics of Grande Terre (Kerguelen Islands) inferred from sedimentary ancient DNA

Journal of Quaternary Science, EarlyView.
ABSTRACT While the Antarctic region has experienced significant climatic changes over the Holocene, few high‐resolution records have examined their effects on the local biota. In order to understand past ecological shifts and forecast future changes, it is important to obtain high‐resolution palaeoecological records from this region.
Xaali O'Reilly‐Berkeley, Aloïs Revéret, Youri Lammers, Maaike Zwier, Anne E. Bjune, Fabien Arnaud, Jostein Bakke, Sandra Nogué, Inger G. Alsos   +8 more
wiley   +1 more source

Checklist of Platyhelminthes, Acanthocephala, Nematoda and Arthropoda parasitizing penguins of the world [PDF]

Check List, 2014
A list of 108 species of metazoans parasites reported from penguins (Sphenisciformes) is provided, with information on their hosts, habitat and distribution.
Martha Brandão, Juliana Moreira, José Luque   +2 more
doaj   +3 more sources