Results 131 to 140 of about 191,263 (242)

Tracking Wintertime Behaviour of Emperor Penguins Using High‐Resolution Synthetic Aperture Radar Imagery

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Using 25–30 cm Umbra synthetic aperture radar (SAR) imagery combined with ground validation of our observations, we introduce a method to track the phenology of emperor penguins during the Antarctic winter. We successfully identified events in the breeding cycle, which were previously impossible to observe during the complete darkness of Antarctic ...
Michelle LaRue   +12 more
wiley   +1 more source

Enhanced Biocatalysis in Nanofluidic Membrane Reactors With Goldilocks Nanopores for Enzymes

open access: yesSmall, EarlyView.
We show that enzyme confinement within the three‐dimensionally interconnected nanochannels of a polyurea molecular network membrane, featuring pore‐size tunability to match the enzyme size, enables a highly active nanofluidic reactor platform. Stable continuous‐flow operation for >200 h and a 30 000‐fold increase in specific space‐time yield over ...
Wangsuk Oh, Ji‐Woong Park
wiley   +1 more source

Field immobilisation of adult Weddell seals using intramuscular butorphanol and midazolam

open access: yesVeterinary Record, EarlyView.
Abstract Background When working with free‐ranging phocid seals, methods of chemical immobilisation require ongoing refinement to reduce complications, particularly apnoea, during research procedures. Methods Adult Weddell seals (n = 20) at Cape Crozier, Antarctica, were chemically immobilised with intramuscular injection of butorphanol and midazolam ...
Rachel R. Holser   +5 more
wiley   +1 more source

Unraveling the impact of dog‐friendly spaces on urban–wildland pumas and other wildlife

open access: yesWildlife Biology, EarlyView.
As the most widespread large carnivore on the planet, domestic dogs Canis lupus familiaris can pose a major threat to wildlife, even within protected areas (PAs). Growing human presence in PAs, coupled with increasing pet dog ownership underscores the urgency to understand the influence of dogs on wildlife activity and health.
Alys Granados   +3 more
wiley   +1 more source

Feathers and flu: identifying data gaps in avian influenza host dynamics to prioritize wildlife conservation Plumas y gripe: identificación de datos faltantes en la dinámica de hospedadores de la influenza aviar para priorizar la conservación de la vida silvestre

open access: yesWildlife Monographs, EarlyView.
We describe the host response continuum for highly pathogenic avian influenza viruses (HPAIV), including the continuum of host responses to HPAIV infection and exposure based on the primary axis of host competence, ability to infect other hosts, and host vulnerability.
Johanna A. Harvey   +9 more
wiley   +1 more source

Amphipod crustaceans in the diet of pygoscelid penguins of the King George Island, South Shetland Islands, Antarctica [PDF]

open access: yes, 1981
Paper received 10 December 1980.Information is presented concerning amphipod crustaceans eaten by three penguin species breeding on King George Island: Pygoscelis adeliae, P. antarctica and P. papua.
Jażdżewski, Krzysztof
core  

Ducks across the pond ‐ challenges and opportunities for collaboration between North America and Europe

open access: yesWildlife Society Bulletin, EarlyView.
Abstract Many waterfowl species and closely related congeners are shared across the Holarctic, and are culturally and economically important in both North America and Europe. Accordingly, both continents have developed science and management frameworks in an attempt to establish evidence‐based conservation practices for this guild of birds.
Kevin M. Ringelman   +7 more
wiley   +1 more source

A review of data on abundance, trends in abundance, habitat use and diet of ice-breeding seals in the Southern Ocean [PDF]

open access: yes, 2012
The development of models of marine ecosystems in the Southern Ocean is becoming increasingly important as a means of understanding and managing impacts such as exploitation and climate change.
Bengston, J.   +15 more
core  

Lichen bleaching as a response to long‐term experimental warming in the High Arctic

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Lichens are an important component of Arctic ecosystems. Studies have indicated a decline in the abundance of Arctic lichens during recent decades, which is often attributed to competitive pressure from vascular plants.
Jiří Šubrt   +3 more
wiley   +1 more source

Wind, waves, wing loading and the flight energetics of giant petrels

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Wind is a major factor driving seabird movement and energetics, the effects of which are modulated by morphology. Developments in tagging technology now make it possible to test predictions from aerodynamic theory about the effects of wind on flight performance in free ...
Madeline E. Hallet   +3 more
wiley   +1 more source

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